2026-05-26T20:49:59Z https://ejournal.undip.ac.id/index.php/index/oai

oai:ojs.ejournal.undip.ac.id:article/56369 2024-03-31T21:48:11Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/56369 2024-03-31T21:48:11Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 1 (2024): Ilmu Kelautan; 156-169 Nasution, Muhammad Arif; Department of Aquatic Resources, Faculty of Fisheries and Marine Sciences, Universitas Teuku Umar Laboratory of Aquatic Environment Productivity, Faculty of Fisheries and Marine Science, Teuku Umar University Hermi, Rudi; Department of Aquatic Resources, Faculty of Fisheries and Marine Sciences, Universitas Teuku Umar Heriansyah, Heriansyah; Department of Aquatic Resources, Faculty of Fisheries and Marine Sciences, Universitas Teuku Umar Lubis, Friyuanita; Department of Aquatic Resources, Faculty of Fisheries and Marine Sciences, Universitas Teuku Umar Saputra, Fazril; Departement of Aquaculture, Faculty of Fisheries and Marine Science, Universitas Teuku Umar Ammar, Esraa E; Plant Ecology, Botany Department, Faculty of Science, Tanta University Akbar, Helmy; Environmental Research Centre, IPB University 2024-03-27 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/56369 seagrass; alpha diversity; beta diversity; constraint variables; biodiversity en Seagrasses are important marine plants that provide a variety of ecosystem services, including food and shelter for marine life, and protection from coastal erosion. This study investigated the biodiversity (alpha and beta diversity) of seagrass in the Kepulauan Banyak Marine Nature Park, Indonesia, with a specific focus on eight sites. Alpha diversity was calculated using Shannon's index, Simpson's index, and Pielou evenness. Beta diversity was determined using Bray-Curtis dissimilarity and Jaccard dissimilarity allowing us to examine the variations in species composition among different sites. Principal coordinate analysis and Partial distance-based redundancy analysis was used to visualize and investigate the impact of constraint variables to the structure of the seagrass communities. Alpha diversity varied among the sites, with the highest alpha diversity found at the Orongan and Matahari site and the lowest at the Ujung Lolok and Balai sites. The dominant substrate type (mud or sand) was found to be a significant (P≤ 0.01) determinant of seagrass alpha diversity, with mud substrates supporting higher diversity than sand substrates. The relationship between alpha diversity and constrain variables was only significant with closest distance to forest lost and longitude variables. The analysis found that water pH, closest distance to forest lost, mean distance to tourism spots, and closest distance to settlement collectively explained a significant (P≤ 0.001) portion (88.48%) of the variation in beta diversity of seagrass across the sites. The results of this study can be used to develop management strategies for the conservation of seagrass meadows in the park.

oai:ojs.ejournal.undip.ac.id:article/1614 2012-02-17T22:47:58Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1614 2012-02-17T22:47:58Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 3 (2009): Jurnal Ilmu Kelautan; 150-154 Yusuf, Candhika; Fisheries Officer, WWF-Indonesia. Email: divedeepbluesea@yahoo.com Ambariyanto, Ambariyanto; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University. Tembalang Campus, Semarang, Indonesia Tel. / Fax. +6224 7474698 Hartati, Retno; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University. Tembalang Campus, Semarang, Indonesia Tel. / Fax. +6224 7474698 2012-02-05 20:20:29 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1614 en Kima, yang merupakan salah satu hewan laut dilindungi, sejak lama banyak dieksploitasi di berbagai daerah di Indonesia. Apabila keadaan ini terus berlanjut maka akan terjadi penurunan populasi di alam yang berujung pada kepunahan dari berbagai spesies Kima tersebut di alam. Penelitian ini bertujuan untuk menganalisis kelimpahan Kima di beberapa pulau di Kepulauan Seribu dan perairan di sekitar Manado. Metode penelitian yang digunakan adalah deskriptif yang bersifat eksploratif. Sampling dilakukan dengan metode Line Intersept Transect (LIT) menggunakan garis transek sepanjang 100 meter sejajar dengan garis pantai pada kedalaman 5 meter. Pengamatan dilakukan pada tiap 2,5 meter di sebelah kanan dan kiri garis transek. Hasil penelitian, ditemukan total 167 individu Kima di Kepulauan seribu dan 61 individu di perairan Manado.  Nilai kepadatan rata - rata pada lokasi Kep. Seribu adalah T. squamosa 0.026 indv/m2, T. maxima 0,016 indv/m2, T. crocea 0.028 indv/m2 sedangkan pada lokasi Manado adalah T. squamosa 0.021 indv/m2, T. maxima 0.0005 indv/m2, T. crocea 0.0085 indv/m2 dan T. gigas 0.002 indv/ m2. Hasil ini menunjukkan bahwa kepadatan Kima di dua lokasi penelitian masih lebih rendah dari beberapa lokasi di Indonesia dan luar negeri. Berdasarkan ukuran cangkang di dua lokasi penelitian diduga hanya T. crocea saja yang telah mencapai fase hermafroditiknya, sedangkan T. gigas dan sebagian besar T. squamosa serta T. maxima baru mencapai fase kematangan gonad jantan saja. Kebanyakan Kima ditemukan di  karang mati beralga (Dead Coral Algae / DCA) dan tututan karang hidup (coral covered) dibandingkan dengan jenis substrat yang lain. Kata kunci : Kima, tridacna, kelimpahan, Kepulauan Seribu, Manado   Giant clam, as a protected marine species, has been exploited massively in many regions in Indonesia. This has lead to the rapid extinction of the giant clam natural population. The purpose of the research is to obtain the abundance status of giant clam species in several island in Kepulauan Seribu and surroundings waters of Manado. Surveys were done by using the modification of Line Intercept Transect (LIT) methods. A hundred meter length of transect line were drawn, in depth of 5 meter and paralleled to the coast line. The observations were made in 2.5 meter to the left and right of the transect line. The results showed, there were total number of clams found at Seribu Islands and Manado waters were 106 and 61 individual, respectively. The average density in Seribu Islands were T. squamosa: 0.026 indv/m2, T. maxima: 0.016 indv/m2, and T. crocea: 0.028 indv/m2, and in Manado were T. squamosa: 0.021 indv/m2, T. maxima: 0.0005 indv/m2, T. crocea: 0.0085 indv/m2 and T. gigas: 0.002 indv/m2. These results showed that the density of giant clams in both places were  found to be lower than other places in Indonesia and abroad. Based from the shell measurements on both locations, only T. crocea were suspected have reached its hermaphrodite phase, while T. gigas and most of T. squamosa and T. maxima were about to reached male gonad maturity phase. The most dominant substrate for the giant clam were the Dead Coral Algae (DCA) and the coral covered. Key  words: Giant clam, tridacna, abundance, Seribu Islands, Manado

oai:ojs.ejournal.undip.ac.id:article/11745 2021-10-13T04:01:54Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/11745 2021-10-13T04:01:54Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 4 (2017): Ilmu Kelautan; 174-184 https://ejournal.undip.ac.id/index.php/ijms/article/download/11745/26921 Kolibongso, Duaitd; Bogor Agricultural Univesity (IPB), Indonesia Prartono, Tri; Department of Marine Science, Bogor Agricultural University, Arman, Ali; Center for the Application of Isotopes and Radiation, National Nuclear Energy Agency 2017-12-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/11745 en The profile concentration of heavy metals, organic matter and the composition of the grain sizes is determined in two sediment cores from Karimata Strait. This study aimed to estimate the distribution of sediment grain sizes and distribution of heavy metals (Pb, Cu, Zn, Ni, As, and Fe) in three sediment fractions (>250 μm, 63-250 μm and <63 m) of Karimata Strait. Sampling was conducted using box core. Graining size analysis was carried out through sieving, continue with digestion, and analyze the heavy metals using Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES). Results of the study show that the sediment grain size distribution is strongly influenced by the water hydrodynamic condition (currents). It can be seen by the dominance of finding coarse grain size in the research areas. The highest concentration of the heavy metals was found in the finest grain size (<63 m) due to the larger surface area and higher adsorption capacity. Distribution of heavy metals Cu, Pb, Zn and Ni in the upper layer of sediments is higher than in the bottom layer. Furthermore, the As and Fe concentration in the surface were lower than in the bottom layer. Statistical analysis shows an association and a source of heavy metals mainly coming from the surrounding areas. It is supported by the enrichment factor values of finding heavy metals generally has been undergone enrichment.Keyword: Grain sizes,Heavy metals, ICP-OES,Karimata strait, Sediment

oai:ojs.ejournal.undip.ac.id:article/2306 2012-03-01T08:38:13Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2306 2012-03-01T08:38:13Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 1 (2005): Jurnal Ilmu Kelautan; 30-34 Munasik, Munasik; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang, Indonesia e-mail: munasik@hotmail.com Widyatmoko, Wisnu; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2306 en Studi waktu spawning karang Acropora aspera dari P. Panjang, Jawa Tengah (6 0 34’ 30" LS 110 0 37’ 45"BT) telah dilakukan melalui pengamatan di akuarium pada 29 Maret-24 April 2002. Pengamatan spawningdi akuarium memperlihatkan sebagian besar koloni memijah pada 5 April yang bertepatan dengan faselunar bulan ¼, sedangkan sebagian koloni lainnya memijah pada tanggal 20 April dan 24 April, bertepatan pada bulan ¾ hingga 4 hari menjelang bulan purnama. Seluruh koloni karang melakukan pemijahan pada jam 20.00 hingga 23.00 WIB, 2 jam setelah matahari tenggelam. Studi ini memperlihatkan adanya kesamaan waktu spawning karang A. aspera di akuarium dengan hasil pengamatan gamet pada preparat jaringan populasi karang.Kata kunci: reproduksi karang, waktu spawning, Acropora aspera, P. Panjang, Jawa TengahSpawning time for the reef coral Acropora aspera at reef flat Panjang Island, Central Java –Java Sea (6 034’ 30" S 110 0 37’ 45" E) was studied by laboratory observations for coral spawning from 29 Maret-24 April 2002. Gametes of most colonies were spawned simultaneously on 5 April 2002 in first quarter moon. While other colonies spawned gametes on 20 April and 24 April in third quarter moon and 4 days before full moon. All colonies spawn at 2.00-23.00, 2 hours after sunset. These results of the spawning time in the aquaria seem to be in accordance with its histological sections.Key words: coral reproduction, spawning time, Acropora aspera, Panjang Island, Central Java

oai:ojs.ejournal.undip.ac.id:article/37007 2021-12-05T18:30:07Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/37007 2021-12-05T18:30:07Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 3 (2021): Ilmu Kelautan; 147-154 Aisyah, Siti; Department of Aquatic Resource Management, Universitas Bangka Belitung Sumantyo, Josaphat Tetuko Sri; Department of Environmental Remote Sensing, Chiba University Pamungkas, Aditya; Department of Marine Science, Universitas Bangka Belitung Muftiadi, M Rizza; Department of Aquatic Resource Management, Universitas Bangka Belitung Yusuf, Muh; Department of Oceanography, Universitas Diponegoro 2021-09-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/37007 Nautilus; Marine biogeography; Bangka Belitung; living fossil; environmental en Nautilus is the only surviving genus whose members were numerous and widely dispersed in the oceans throughout the Jurassic and Miocene times. It represents the only living member from the Family Nautilidae and is often considered as a living fossil. Nautilus is found with high biodiversity in Ambon, Indonesia, and were in special cases even found in Bangka Belitung, far from their original habitat. This study aimed to understand the historical component of the habitat and distribution of Nautilus in Bangka Belitung and to determine the depth, temperature, current, and environmental heterogeneity relate to Nautilus. Nautilus samples were found in Bangka Belitung Seas nearby a crack region at 50–75 m deep while the optimal depth of the Nautilus was 150–300 m, depending on the local area. The locations in the Bangka Belitung Seas where Nautilus found have sea surface temperatures between 30-31°C and 27-28°C during the East Monsoon and the West Monsoon respectivelly. The implications of temperature as a limiting factor are fairly significant, as it restricts the upper limit of the living habitat to predictable depths, which vary both geographically and seasonally during the West Monsoon when surface temperatures approach habitable levels. Sea currents at the Bangka Belitung Seas move at 0–0.6 m.s-1 during the East Monsoon and speed up near the North Natuna Sea. During the West Monsoon, currents predominantly flow from the Natuna Sea to the Java Sea at 0–0.5 m.s-1. Large-scale deep-water currents and the effects of smaller currents on scent dispersal influence the directional movements of Nautilus.

oai:ojs.ejournal.undip.ac.id:article/7556 2020-04-17T05:59:54Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7556 2020-04-17T05:59:54Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 2 (2014): Ilmu Kelautan; 81-87 Purwiyatno, Anna Ida Sunaryo; Marine Science Study Program, Faculty of Mathematic and Natural Science Sriwijaya University, Palembang, South Sumatera, Indonesia 30662 Agustriani, Fitri; Marine Science Study Program, Faculty of Mathematic and Natural Science Sriwijaya University, Palembang, South Sumatera, Indonesia 30662 2014-06-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7556 en Taman Nasional Sembilang merupakan salah satu taman nasional yang terletak di Sumatera Selatan dan menjadi kawasan mangrove terbesar di barat Indonesia. Sebagian besar wilayah mangrovenya telah mengalami alih fungsi menjadi tambak pasang surut. Hal ini menyebabkan timbulnya kekhawatiran kerusakan mangrove di taman nasional. Salah satu upaya untuk mempertahankan wilayah mangrove adalah dengan melakukan sistem silvofishery, yaitu penanaman mangrove dan budidaya bandeng dilakukan secara bersamaan di tambak. Penelitian ini bertujuan untuk menganalisis kualitas air dan kondisi nutrien di tambak di daerah restorasi silvofishery di Taman Nasional Sembilang. Penelitian dilakukan dengan metode purposive sampling di tambak silvofishery, tambak non-silvofishery, dan badan air sungai di seluruh wilayah taman nasional. Pengukuran dilakukan terhadap parameter kualitas air dan kandungan nutrien khususnya nitrat dan fosfat. Hasil penelitian menunjukkan bahwa kehadiran tanaman mangrove di daerah tambak mampu memperbaiki kandungan oksigen dan pH air tambak. Mangrove juga menunjukkan kemampuan dalam mengikat nitrat yang secara tidak langsung akan mencegah air tambak dari polusi. Namun, kandungan fosfat tinggi menunjukkan bahwa tanaman mangrove muda di wilayah restorasi belum mampu mengikat nutrien ini secara signifikan. Hasil penelitian ini menunjukkan bahwa hutan mangrove sangat bermanfaat bagi kegiatan budidaya tambak karena kemampuannya dalam menyerap polutan nutrient. Kata kunci: silvofishery; kolam; nitrat; fosfat; Taman Nasional Sembilang Sembilang National Park is one of the national parks which is located in South Sumatera and became the largest mangrove area in western Indonesia. Most of the mangroves area in this national park has been experiencing conversion to be tidal ponds. This has resulted in concerns on mangrove forest destruction in the park. One of the efforts to maintain mangroves area is by applying silvofishery system, which is mangrove planting and cultivation of milkfish in ponds performed simultaneously. This study aims to investigate the water quality and nutrient condition in the ponds in the area of silvofishery restoration at Sembilang National Park. The study was conducted by purposive sampling method in the silvofishery ponds, non-silvofishery ponds, and river water bodies throughout the park. Measurements conducted on water quality parameters and nutrient content, especially nitrate and phosphate. The results showed that the presence of mangrove in the ponds area is able to improve the oxygen content and pH of pond water. Mangroves also demonstrated the ability to bind nitrates which indirectly will prevent the pond water from pollution. However, the high phosphorus content showed that young mangrove plants in the restoration area have not been able to significantly bind the of this nutrient. The results of this study showed that mangrove forests are very beneficial for aquaculture activities because of its ability to absorb nutrient pollutants. Keywords: silvofishery; ponds; nitrate; phosphate; Sembilang National Park

oai:ojs.ejournal.undip.ac.id:article/66149 2024-12-23T10:10:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/66149 2024-12-23T10:10:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 4 (2024): Ilmu Kelautan; 495-502 Sabila, Anis Yasmin; Magister Program of Marine Sciences, Faculty of Fisheries and Marine Science, Universitas Diponegoro Maslukah, Lilik; Department of Oceanography, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Wirasatriya, Anindya; Department of Oceanography, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Indrayanti, Elis; Department of Oceanography, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Prasetyawan, Indra Budi; Department of Oceanography, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro||Indonesia Center for Coastal and Ocean Mapping/Joint Hydrographic Center, University of New Hampshire Widada, Sugeng; Department of Oceanography, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro 2024-12-11 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/66149 Algorithm, Suspended Solid, Sentinel-2, Teluk Awur, Remote Sensing en Total suspended solids (TSS) is an important parameter of water quality, so regular monitoring is necessary to prevent further marine pollution due to TSS. Remote sensing is one of the most effective and efficient methods to monitor TSS with cost-effective operations. The Sentinel-2 satellite is freely available to users with high spectral and spatial resolution (10m, 20m, 60m). Dynamic changes in coastal waters and their characteristics cause TSS retrieval algorithms built from available imagery having less optimal results in other water regions. This research aims to develop an empirical TSS algorithm model that specifically applies to the coastal waters of Teluk Awur, Jepara. The algorithm was developed using an empirical method through correlation between spectral values of Sentinel-2 imagery and in situ TSS values. Water sampling was conducted at 110 stations with a depth of 0.5 m on 22 July 2023 simultaneously collocated with Sentinel-2 image recording. Half of the data was used for algorithm tuning and the other half used for validation. The best regression analysis is found in the red band (B4) and the model is linear. The relatively good performance is shown by the coefficient of determination (R²) of 0.45, RMSE (3.40 mg.L-1), and MAPE (10.76%). The resulting algorithmic model was TSS (mg.L-1) =817.213*(B4)-0.959. This study shows that Sentinel-2 MSI images for TSS retrieval in the coastal waters of Teluk Awur could be applicable and the red band (B4) can be used for mapping TSS concentrations in the surrounding study area.

oai:ojs.ejournal.undip.ac.id:article/1842 2017-08-19T22:47:30Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1842 2017-08-19T22:47:30Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 1 (2011): Ilmu Kelautan; 30-34 Ambariyanto, Ambariyanto; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro. Jl. Prof. Sudarto SH, Kampus Tembalang, Semarang. Tilp. 62.24.7474698. Email: ambariyanto@undip.ac.id 2012-02-12 06:24:31 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1842 id Pencemaran perairan laut sudah sering dilaporkan terjadi di berbagai tempat. Pencemaran ini secara langsung memberikan pengaruh yang negatif terhadap biota laut mulai dari terjadinya gangguan proses biologis hingga ke kematian massal. Akibatnya terjadi degradasi lingkungan perairan laut. Salah satu biota yang sering menjadi korban adalah karang yang dikenal hidup bersimbiosis dengan algae zooxanthellae yang berperan sangat penting dalam kehidupan karang. Penelitian ini bertujuan melihat pengaruh polutan khususnya hidrokarbon dan surfaktan terhadap zooxanthellae yang diisolasi dari karang Acropora aspera; Porites lutea; Montipora digitata. Perlakuan yang diberikan adalah paparan hidrokarbon (bensin) dan surfaktan sabun cair dengan konsentrasi 5, 10 and 15 % volume selama 5 menit. Hasil penelitian menunjukkan bahwa surfaktan jauh lebih toksik dibanding dengan hidrokarbon terhadap zooxanthellae. Zooxanthellae yang diisolasi dari Acropora aspera menunjukkan kemampuan bertahan yang cukup baik terhadap hidrokarbon dibandingkan dengan kedua jenis karang yang lain. Sedangkan surfaktan mematikan zooxanthellae dengan cepat pada ketiga leve perlakuan.Kata kunci: zooxanthellae, hidrokarbon, surfaktan, pencemaran, karang. Marine pollution has been frequently reported in various places around the world. This pollution directly gives a negative impact on marine life ranging from disturbance of biological processes to the mass mortality. One of the marine organisms that severely affected by marine pollution is coral which is known to live in symbiosis with zooxanthellae algae that play a very important role in coral life. This study investigates the effects of pollutants, especially hydrocarbons and surfactants on zooxanthellae isolated from corals Acropora aspera; Porites lutea; and Montipora digitata. The treatment given is exposure to hydrocarbon (gasoline) and surfactant (ordinary soap) with a concentration of 5, 10 and 15% by volume for 5 minutes. The results showed that the surfactant is much more toxic than the hydrocarbons of the zooxanthellae. Zooxanthellae isolated from Acropora aspera showed the ability to survive quite well against hydrocarbons compared with the other two types of coral. While quick exposure of surfactant has resulted in rapid mortality of zooxanthellae at all three levels of treatment. Key words: zooxanthellae, pollutants, hydrocarbons, surfactant, corals

oai:ojs.ejournal.undip.ac.id:article/19355 2019-03-26T05:28:15Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19355 2019-03-26T05:28:15Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 2 (2002): Jurnal Ilmu Kelautan; 115-120 Djunaedi, Ali; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Santoso, Adi; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Widiatmoko, W.; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Sarjito, Sarjito; Jurusan Perikanan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro 2009-06-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19355 en Penelitian dilakukan untuk mengetahui pengaruh photoperiod dan temperatur terhadap pematangan gonad kepiting bakau. Penelitian dilaksanakan di Hatchery Marine Center IImu Kelautan Jepara, dari bulan September 1999 sampai dengan bulan Desember 1999. Metoda penelitan menggunakan rancangan acak lengkap (RAL) faktorial faktor pertama adalah perlakuan photoperiod dengan 2 taraf pelakuan. yaitu short­day dan long-day. Sedangkan faktor kedua adalah perlakuan temperatur yang juga mempunyai 2 taraf perlakuan yaitu 29 oC dan 31 oC. Hasil penelitian menunjukksn bahwa perlakuan dengan kombinasi photoperiod dan temperatur berpengaruh terhadap perkembangan gonad kepiting bakau. Urutan besarnya nilai lndek kematangan gonad (IKG) adalah 25,41 (A 1B I); 22,06 (A 1B2):20,77 (A2B I) dan 19,88 (A2B2). Hasil analisis regresi nilai simpangan (b) dari persamaan garis menunjukkan nilai IKG terbaik dicapai pada perlakuan short-day dan temperatur 29oC (A 1B1). Sedangkan terendah pada perlakuan long-day dan temperatur 31°C (A2B2).Kata kunci: reproduksi, photoperiod, temperatur; indek kematangan gonad  The research is to investigate the effect of photoperiod and temperature on the gonad development (GSI) of the mud crab. This research was conducted at the marine centre hatchery Jepara from September to December 1999. The method used was completely factorial randomized design. The first factor was photoperiod i.e. short-day and long-day. The second factor was i.e temperetur 29 oC and 31 oC. The result showed that photoperiod and temperatur in combination influenced gonad development of the mud crab. The degree of the gonado somatic index (GSI) was 25,41 (A 1B1); 22,06 (A 1B2); 20,77 (A2B1) and 19.88 (A2B2). The result of regression analysis showed that the highest and the lowest gonado somatic indices occured on the combination between short-day and 29 oC and long-day temperatur 3 1oC respectively. Keywords: reproduction, photoperiod, temperatur; and gonado somatic index (GSI)

oai:ojs.ejournal.undip.ac.id:article/2353 2012-03-03T11:58:53Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2353 2012-03-03T11:58:53Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 3 (2004): Jurnal Ilmu Kelautan; 130-135 Aulia, Gilang; Alumnus Fakultas Perikanan dan Ilmu Kelautan IPB, Bogor Jaya, Indra; Departemen Ilmu dan Teknologi Kelautan, Fakultas Perikanan dan Ilmu Kelautan, IPB, Bogor Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2353 en Makalah ini menguraikan tentang karakteristik suara lumba-lumba hidung botol (Tursiops truncates) yang diperoleh dengan menggunakan perekam suara pada laptop Toshiba T2150 CDT yang dilengkapi dengan soundcard dan internal microphone. Suara yang direkam adalah suara bertipe whistle dan burst yang dikeluarkan oleh lumba-lumba pada dua kelompok usia, subadult (10-12 tahun) dan adult (>12 tahun). Proses perekaman dilakukan selama ± 1 menit dan karakteristik suara ditentukan berdasarkan analisis spektrogram. Nilai power spectral sensity (PSD) dari suara yang dihasilkan lumba-lumba pada masing-masing kelompok usia bervariasi meskipun berasal dari individu yang sama, demikian halnya dengan frekuensi terjadinya PSD maksimal tersebut. Jika kedua kelompok usia ini dibandingkan, maka terlihat bahwa nilai rata-rata PSD maksimal kedua tipe suara pada lumba-lumba kelompok usia adult lebih tinggi dibanding lumba-lumba kelompok usia subadult.Suara whistle dan burst pada kedua kelompok usia terdengar berbeda, dimana suara whistle pada kelompok usia subadult tidak sekuat whistle pada kelompok usia adult. Perbedaan lebih jelas pada suara bertipe burst. Pada lumba-lumba kelompok usia subadult, suara burst menyerupai lengkingan, akan tetapi pada kelompok usia adult, suara burst menyerupai teriakan.Kata kunci: lumba-lumba hidung botol, suara siulan, suara lengkinganThis paper describes the sound characteristics produced by Bottlenose Dolphin using a notebook computer equipped with a sound card and internal microphone. The sound produced by two age groups, sub adult(10 – 12 years old) and adult (>12 years) was recorded for the duration of about one minute, and their sound characteristics were determined base on spectrogram analysis. It was found that the power spectral density (PSD) of the sound produced varies between the two groups. The average of maximum PSD of the adult was higher than the sub adult. Both of whistle and burst sounds in each age class were heard differently.The whistle sound produced by the sub adult was not as strong as the one produced by the adult group, and in the case of burst sound this differences was more pronounced. The burst sound of the sub adult group was heard like a shrill, but for the adult age group the burst sound was heard like a yell.Key words: botlenoosed dolphin, whistle sound, burst sound

oai:ojs.ejournal.undip.ac.id:article/44577 2022-09-06T08:34:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/44577 2022-09-06T08:34:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 2 (2022): Ilmu Kelautan; 93-100 https://ejournal.undip.ac.id/index.php/ijms/article/download/44577/138533 Andriyono, Sapto; Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga Hidayah, Reza Istiqomatul; Aquaculture Study Program, Faculty of Fisheries and Marine, Universitas Airlangga Sulmartiwi, Laksmi; Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga Hidayani, Andi Aliah; Fisheries Department, Faculty of Marine Science and Fisheries, Hasanuddin University Alam, Md. Jobaidul; Department of Fisheries, Ministry of Fisheries and Livestock 2022-06-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/44577 crabs; genetic; molecular; diversity; phylogenetic en Crabs are a group of Decapoda (Portunidae) that act as keystone species from Pangpang Bay as the marine benthic organism. Besides having an ecological function, crab also provides essential components for human health. The crab identification technique is usually conducted based on morphology and anatomy characteristics, in which certain body parts as the key for identification. This study used two identification methods, i.e. morphological features and a molecular approach. Although morphological identification has been carried out, the molecular techniques provide better accuracy and, at the same time, provide additional information about the characteristics of mitochondrial DNA. The purpose of this study is to identify the blue swimming crab caught by a traditional fisherman at Pangpang Bay, Banyuwangi, based on mitochondrial DNA sequence on cytochrome c oxidase subunit I, and reconstructed the phylogenetic tree including genetic distance also was analysed. The nucleotide sequences of the COI gene were analysed by Chromas, Clustalω, Reverse-Complement, and the MegaX. The phylogenetic tree and genetic distance calculations were carried out using Mega X software through the Neighbor-Joining (NJ) Algorithm with the addition of several sequences from the NCBI online database. This study confirmed that the specimen of Pangpang Bay is Portunus pelagicus (BWIPP001 and BWIPP003) and Portunus sanguinolentus (BWIPP002). The species of P. pelagicus have 99.99% similarities with the same species (KJ168060) from China, while the P. sanguinolentus is close to the same species (EU284144) with a per cent identity is 99.97%. The genetic distance, for P. pelagicus and P. sanguinolentus, were in range of 0.00-0.066 and 0.00-0.005 respectively.

oai:ojs.ejournal.undip.ac.id:article/522 2020-10-25T22:35:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/522 2020-10-25T22:35:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 1 (2008): Jurnal Ilmu Kelautan; 31-36 Djunaedi, Ali Sunaryo, Sunaryo Rahmawati, Dyah 2010-11-11 16:44:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/522 id Dalam rangka pengelolaan sumberdaya rajungan, penelitian tentang morfometri dan perkembangan gonad telah dilakukan dengan tujuan untuk mengetahui pendugaan kematangan seksual rajungan (Portunus pelagicus). Pengukuran karakteristik morfblogi, seperti: lebar karapas, lebar capit, panjang capit, dan panjang daktilus yang dapat bergerak dan lebar abdomen serta pengamatan perkembangan gonad telah dilakukan. Estimasiukuran kematangan morfometri dilakukan dengan metode smooth spline. Sedangkan, estimasi ukuran kematangan fisiologi dilakukan dengan memplotkan data perkembangan gonad pada fungsi logistik. Hasil penelitian menunjukkan kematangan seksual morfometri dan fisiologi pada rajungan jantan maupun betina dicapai secara bersamaan yaitu pada rajungan jantan masing-masing pada ukuran lebar karapas 81 mm dan 86,36 mm dan pada rajungan betina masing-masing dicapai pada ukuran karapas 87 mm dan 91,25 mmKata kunci: Portunus pelagicus, morfometri, perkembangan Gonad, kematangan seksual

oai:ojs.ejournal.undip.ac.id:article/8789 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8789 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 1 (2015): Ilmu Kelautan; 52-60 Delpopi, Michael; Bogor Agricultural University Zamani, Neviaty Putri; Bogor Agricultural University Soedarma, Dedi; Bogor Agricultural University Johan, Ofrie; Research Institute for Ornamental Fish Aquaculture and Development 2015-03-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8789 UPT LPKSDMO Pulau Pari LIPI and BU DIKTI in Black-band disease (BBD) is a persistent disease that cause the decline of the coral reef ecosystems, which is still slightly recorded in Indonesia, including in Pari Island, Thousand Islands. The objectives of this study were to determine progression, prevalence and incidence BBD on Montipora spp in shallow water of Pari Islands. Coral cover were estimated using line intercept transect (LIT) whereas the prevalence and incidence of BBD were carried out by using belt transect method with 1 m left and right of tape as long 20 m with 3 replications recorded approximately every two months. BBD progression was documented with a digital photograph method, the photograph of affected area of each coral was taken each day for 2 weeks. BBD was found to be spread in the surveyed area. The result show that prevalence and incidence of BBD showed a positive exponential relationship with water temperature. During the observation Both prevalence and incidence increased on May transitional season (wet-dry). The highest prevalence was found at 5,96 percent and whereas the maximum disease progression found at 0,46 cm/day.

oai:ojs.ejournal.undip.ac.id:article/68392 2025-06-25T07:35:55Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/68392 2025-06-25T07:35:55Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 2 (2025): Ilmu Kelautan; 259-273 Ekamaida, Ekamaida; Natural Resources and Environmental Management Science Study Program, IPB University Faculty of Agriculture, Malikussaleh University Kusmana, Cecep; Department of Silviculture, Faculty of Forestry and Environment, IPB University Kusmana, Cecep; Department of Silviculture, Faculty of Forestry and Environment, IPB University Hariyadi, Sigid; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University Hariyadi, Sigid; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University Nurilmala, Mala; Department of Aquatic Products Technology, Faculty of Fisheries and Marine Sciences, IPB University Nurilmala, Mala; Department of Aquatic Products Technology, Faculty of Fisheries and Marine Sciences, IPB University Krisanti, Majariana Krisanti, Majariana 2025-06-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/68392 Anthropogenic; Contaminants; Oysters; Saccostrea cucullata; Heavy metals en Lhokseumawe is a designated as an Economic Growth Center (EGC), making it very susceptible to producing heavy metals.This research aimed to measure the content of lead (Pb) and cadmium (Cd) in oysters (Saccostrea cucullata), water, and sediment in the Cunda Strait, as well as evaluate the relationship between heavy metals and environmental conditions. The experiment was conducted at five stations selected based on considerations of seawater inflow and outflow into the Cunda Strait and existing pollution sources. The results showed that high levels of Pb and Cd with 0.36 and 0.00 mg.kg-1 for S. cucullata, 0.07 and 0.01 mg.kg-1 for water, as well as 7.60 and 0.03 mg.kg-1 for sediment, were found at locations away from the inflow and outflow of the Malacca Strait. The analysis showed a positive pattern in the relationship between Pb metal levels in S. cucullata with water and sediment. This suggested that Pb pollution in S. cucullata came from Pb metal in sediment and water, showing a significant effect on aquatic organisms. However, no clear relationship was found between Cd metal in S. cucullata with sediment and water. The main differences in Pb and Cd between parts were observed in the levels of Pb in water (r= 0.59) and Cd in water (r= 0.71), where higher concentrations were found in central part of the Cunda Strait compared to the southern and northern. Contaminants of heavy metals in S. cucullata, water, and sediment were significantly influenced by temperature, sediment fraction, and organic matter.

oai:ojs.ejournal.undip.ac.id:article/2226 2012-02-27T12:13:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2226 2012-02-27T12:13:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 2 (2006): Jurnal Ilmu Kelautan; 72-78 Yulianto, Bambang; Jurusan Ilmu Kelautan FPIK Universitas Diponegoro Semarang 50239 Telp/Faks: 024-7474698, Email: bb_yulianto@yahoo.com Ario, Raden; Jurusan Ilmu Kelautan FPIK Universitas Diponegoro Semarang 50239 Telp/Faks: 024-7474698 Agung, Triono; Jurusan Ilmu Kelautan FPIK Universitas Diponegoro Semarang 50239 Telp/Faks: 024-7474698 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2226 en Studi absorpsi metal tosik tembaga (copper) oleh Gracilaria sp. telah dilakukan. Tujuan dari studi ini adalah meneliti kemungkinan kemampuan vegetasi akuatik yang akan digunakan sebagai biofilter. Pada kegiatan budidaya air payau di Indonesia, logam tembaga sering digunakan sebagai desinfektan pemusnah predator pada saat tahapan persiapan kolam/tambak. Namun di lain pihak tembaga juga memiliki potensi toksisitas yang tinggi terhadap lingkungan. Studi ini dilakukan secara laboratoris, dengan melakukan pemaparan rumput laut Gracilaria sp. pada tiga perlakuan konsentrasi tembaga yang berbeda (K1: kontrol; K2: 0,5 ppm; dan K3:1 ppm) selama empat perbedaan waktu pemaparan (M1: 1 minggu; M2: 2 minggu; M3: 3 minggu; dan M4: 4 minggu). Analisis kandungan tembaga pada Gracilaria sp. dilakukan pada setiap minggu. Hasil penelitian ini menunjukkan bahwa Gracilaria sp. mampu menyerap tembaga yang terlarut dalam air laut. Penyerapantembaga meningkat secara sangat nyata sejalan dengan peningkatan perlakuan konsentrasi dan lama waktu dedah. Konsentrasi tembaga yang diserap pada K2 (0,5 ppm Cu) adalah, masing-masing, 12,745 ppm(setelah pemaparan 1 minggu), 27,604 ppm (setelah pemaparan 2 minggu), 29,890 ppm (setelah pemaparan 3 minggu), dan 30,215 ppm (setelah pemaparan 4 minggu). Sementara itu, konsentrasi tembaga setelah pemaparan Gracilaria sp. pada K3 (1 ppm Cu) masing-masing adalah 31,980 ppm (setelah pemaparan 1 minggu), 50,564 ppm (setelah pemaparan 2 minggu), 53,884 ppm (setelah pemaparan 3 minggu), dan54,486 ppm (setelah pemaparan 4 minggu).Kata kunci: Gracilaria sp., tembaga, logam toksik, absorpsi/penyerapan.Absorption of toxic metal (copper ) by Gracilaria sp. had been studied. The aim of the study reported in this paper was to investigate the possibility of Gracilaria sp. as a biofilter. In brackish water pond culture in Indonesia, copper is usually used as the predator eradicator in pond preparation. But in other hand, copper has potentially high toxicity to the aquatic environment. The study was conducted in the laboratory, by exposing seaweed Gracilaria sp. to three different concentrations of copper (K1: control; K2: 0,5 ppm; and K3: 1 ppm), during four different exposure times (M1: 1 week; M2: 2 weeks; M3: 3 weeks; and M4: 4 weeks). Analyses of copper metal accumulated by Gracilaria sp. were done every week. The results of present works revealed that Gracilaria sp. is able to absorb copper metal dissolved in seawater. Absorption of copper increase significantly by increasing of copper concentration and exposure duration. The concentrations of copper absorbed in K2 (0,5 ppm Cu) are, respectively, 12,745 ppm (after 1 week exposure), 27,604 ppm (after 2 weeks exposure), 29,890 ppm (after 3 weeks exposure), and 30,215 ppm (after 4 weeks exposure). Meanwhile, the concentrations of copper after exposure Gracilaria sp. to K3 (1 ppm Cu) are 31,980 ppm (after 1 week exposure), 50,564 ppm (after 2 weeks exposure), 53,884 ppm (after 3 weeks exposure), and 54,486 ppm (after 4 weeks exposure),  respectively.Key words: Gracilaria sp., copper, toxic metal, absorption.

oai:ojs.ejournal.undip.ac.id:article/20702 2021-10-13T03:32:58Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/20702 2021-10-13T03:32:58Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 1 (2019): Ilmu Kelautan; 51-60 Siringoringo, Rikoh Manogar; Research Centre For Oceanography, Indonesian Institute of Sciences Hadi, Tri Aryono; Research Centre For Oceanography, Indonesian Institute Of Sciences Sari, Ni Wayan Purnama; Research Centre For Oceanography, Indonesian Institute of Sciences Abra, Muhammad; Development Unit for Human Resources Development on Oceanography Competency, Indonesian Institute of Sciences Munasik, Munasik; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University 2019-02-28 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/20702 distribution; community; coral; west coast; Sumatra en This paper assesses the distribution and community structure of coral species in six locations along the west coast of Sumatra, namely Mentawai, Bengkulu, Nias, Padang Pariaman, Simeulue, and Central Tapanuli. Data collected using Line Intercept Transect (LIT) method obtained from 55 sites at six locations. The ordination analysis by using PRIMER 7 software indicates the corals do not distributed evenly. In this case, almost all of the corals distributed mainly in Central Tapanuli and followed by Bengkulu, making it the most diverse corals location in the west coast. Mentawai and Padang Pariaman were less diverse and relatively similar as clustered together, but Padang Pariaman reefs had more Montipora and Pocillopora while Mentawai reefs is mainly featured by Pavona and Psammocora. Although Nias reefs clustered into two different clusters, the main reef features were Porites and Pavona. Simeulue reefs appeared characterized by Porites and Psammocora.  Porites known as a very common genus of coral and are found in the widest area of the world's coral reefs. The within-site species richness determined by using species accumulation curve. K-dominance curve showed that Bengkulu and Mentawai seemed to have the lowest cumulative abundance but then crossed over Central Tapanuli at the third most abundance species. There were 52 genera found from six locations, eight of them distributed in all locations. Approximately 90% of which were found in Central Tapanuli. There were no differences between live coral coverage within locations, yet Caswell’s neutral model showed that Mentawai and Bengkulu had more coral species than other locations, indicating that there were likely were less stress environmental conditions occurring in these two locations.

oai:ojs.ejournal.undip.ac.id:article/3643 2017-08-19T22:45:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/3643 2017-08-19T22:45:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 2 (2012): Ilmu Kelautan; 63-73 Djoko, Kunarso H; Pusat Penelitian Oseanografi LIPI, Jln. Pasir Putih I, Ancol Timur, Jakarta Telepon: 021-64713850. Fax: 021-64911948. Titiek, Agustin A; Universitas Hang Tuah, Surabaya, Jln. Arief Rachman Hakim 150, Sukolilo, Surabaya. Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/3643 en Peranan bakteri yang sangat vital pada ekosistem perairan laut adalah sebagai dekomposer dengan hasil dekomposisi unsur-unsur mineral yang essensial sebagai sumber nutrien pada rantai makanan. Penelitianproduktivitas perairan Lamalera ditinjau dari aspek bakteriologis telah dilakukan pada bulan Juli 2011 dengan menggunakan Kapal Riset Baruna Jaya VIII. Penelitian ini bertujuan untuk mempelajari bakteri heterotropik di Perairan Lamalera dan hubungannya dengan kesuburan perairan lautnya. Metode Total Plate Count digunakan untuk menentukan kandungan bakteri heterotrofik, sedangkan produktivitas bakteri ditentukan dengan metode Acridine Orange Direct Count. Hasil penelitian menunjukkan bahwa kandungan bakteri heterotrofik pada permukaan perairan di Selat Flores lebih tinggi bila dibandingkan dengan Selat Bolling dan Selat Alor dengan rata-rata kandungannya 3.70 CFU x 102/ml. Sedangkan pada kedalaman termoklin dan di bawah termoklin Selat Alor paling tinggi kandungannya bila dibandingkan dengan Selat Flores dan Selat Bolling dengan rata-rata kandungannya yaitu 4.30 CFU x 102/ml dan 6.20 x 102 CFU/ml. Untuk kandungan produktivitas bakteri dalam bentuk biomass Carbon pada permukaan dan termoklin di perairan Selat Alor lebih tinggi bila dibandingkan dengan perairan Selat Flores dan Selat Bolling dengan nilai rata-rata 6.8 x 10-10grC/ml dan 5.3 x 10-10grC/ml. Berdasarkan hasil penelitian terhadap kandungan bakteri heterotrofik dan produktivitasnya, mengindikasikan bahwa perairan Selat Alor cenderung lebih tinggi bila dibandingkan dengan perairan Selat Bolling dan Selat Flores. Perbedaan jumlah kandungan bakteri ini dimungkinkan karena faktor musim dan lingkungan yang berpengaruh terhadap ekosistem perairan lautnya. Secara umum dalam penelitian ini dapat disimpulkan bahwa produktivitas perairan laut Lamalera relatif subur.Kata kunci: Produktivitas bakteri, bakteri heterotrofik, perairan Lamalera. The very important role of bacteria in the marine ecosystem was decomposer, the result of decomposition is mineral essential nutrient on the trophic level. The study of productivity Lamalera waters based on bacteriological aspect was conducted by using the Research Vessel Baruna Jaya VIII on July 2011. The objectives of this study were to find out the total numbers and pattern of distribution heterotrophic bacteria and bacterial productivity in the marine ecosystem of Lamalera and related with waters fertilize. The method for determine of heterotrophicbacteria was used the Total Plate Count, whereas Acridine Orange Direct Count method was used to determine material productivity. The result of study indicated that heterotrophic bacteria in the surface layers of FloresStrait was higher than that of compare with Bolling Strait and Alor Strait with an average 3.70 CFU x 10 2/ml. Whereas at the thermocline layers and under the thermocline layers, heterotrophic layer in Alor strait was higher than Flores strait and Bolling strait with an average 4.30 x 102 CFU/ml and 6.20 x 102 CFU/ml. For the bacterial productivity on the form of biomass Carbon, at the surface and thermocline layers in Alor Strait was higher than Flores Strait and Bolling Strait with an average 6.8 x 10-10grC/ml and 5.3 x 10-10grC/ml. Based on the result of study of heterotrophic bacteria and bacterial productivity, was indicated that in Alor strait was higher number compare with Bolling strait and Flores strait. The differences numbers of bacterial contents perhaps due to monsoon and environmental were influenced on the marine ecosystem. In General it could be concluded that the condition of productivity Lamalera waters relatifvely fertile.Key words: Bacterial Productivity, heterotrophic bacteria, Lamalera waters.

oai:ojs.ejournal.undip.ac.id:article/50770 2023-05-21T03:05:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/50770 2023-05-21T03:05:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 1 (2023): Ilmu Kelautan; 57-68 Purnawan, Syahrul; Laboratory of Marine Acoustics, Faculty of Marine and Fisheries, Universitas Syiah Kuala Department of Marine Sciences, Faculty of Marine and Fisheries, Universitas Syiah Kuala Karina, Sofyatuddin; Department of Marine Sciences, Faculty of Marine and Fisheries, Universitas Syiah Kuala Kang, Myounghee; Department of Maritime Police and Production System, Gyeongsang National University Manik, Henry; Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, IPB University 2023-03-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/50770 Banda Aceh; hydroacoustic; Simrad EK-15; sonar5 pro; target strength en Monitoring fish stocks is an important part of sustainable management of fisheries resources. Conducting the current evaluation is very difficult since there are no reliable data on the potential for fisheries in the waters surrounding Banda Aceh city. The hydroacoustic method was used for the first time in the waters of Alue Naga, located north of Banda Aceh, to evaluate the condition of fish stocks. A single beam scientific echosounder with a frequency of 200 kHz was used to collect hydroacoustic data in the area. The collected data was then processed using the Sonar5-Pro software. Cell integration was carried out at an interval of 10 meters vertically with an elementary sampling distance (ESD) of 200 m. While the volume backscattering strength (SV) value tends to be the highest in intermediate layers, the target strength (TS) value was found to be maximum in deeper layer, reaching a maximum value of -49.46 dB at a depth of 51–60 m. Area density value (#.ha-1) was found to be the highest at a depth of 11-20 m, while Biomass (g.ha-1) at a depth of 21-30 m was the highest among other depth layers with a value of 1558 g.ha-1. According to the in-situ catches of Carangoides, Selaroides, Aphareus, Variola, and Priacanthidae, there are a number of potential reef fish resources in the waters of Alue Naga. The findings of this study strongly support the conclusion that the hydroacoustic method effectively provides comprehensive information on the horizontal and vertical distribution of fish in Alue Naga waters.   

oai:ojs.ejournal.undip.ac.id:article/585 2012-02-27T23:57:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/585 2012-02-27T23:57:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 1 (2007): Jurnal Ilmu Kelautan; 12-17 Nursyirwani, Nursyirwani; Jurusan Ilmu Kelautan, Faperika, Universitas Riau, Pekanbaru 28293 Amolle, Kathy Copper 2010-11-22 05:53:38 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/585 id Penelitian ini dilaksanakan dari bulan September sampai Desember 2006. Tujuan penelitian adalah untuk mempelajari karakteristik molekuler bakteri hidrokarbonuklastik yang diisolasi dari perairan laut Dumai berdasarkan sekuen 16S rDNA. Isolasi bakteri dilakukan pada media cair dan padayang ditambahk an Sumatran crude oil. Karakteristik molekuler diperoleh melalui isolasi dan ampHdkasi DNA dengan PCR dan sekuensing menggunakan ABI 3130 Genetic Analyzer. Dari 6 isolat yang danalisis, hanya ada 3 isolatyang dapat disekuensing. Dari perbandingan dengan BLAST database, didapatkan kesamaan sekuen yang terdekat untuk isolat CA (91%) adalah Providenda vermicola, isolat DA (93%) adalah Burkholderia cepacia, dan isolat FA (99%) adalah Myroides odoratimimus.Kata kunci: Bakteri hidrokarbonuklastik, PCR dan 16S rDNAThe research was conducted from September to December 2006. The aim was to study molecular characterization of hidrocarbonoclastic bacteria based on sequence 16S rDNA from Dumai waters. The bacteria was isolated in both broth and solid media added with the Sumatran crude oil. Molecular characterization included DNA isolation and amplification using PCR, and sequencing by ABI 3130 Genetic Analyzer. Three of six isolateswere successfully sequenced. The comparison of 16S rDNA with known 16S rDNA sequences from BLAST database showed that the closest sequence similarity of isolate CA (91%) was Providencia vermicola, isolate DA(93%) was Burkholderia cepacia, and isolate FA (99%) was Myroides odoratimimus.Key words : Characterization, Hydrocarbonoclastic Bacteria, PCR, 16S rDNA

oai:ojs.ejournal.undip.ac.id:article/10201 2020-04-17T06:03:38Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/10201 2020-04-17T06:03:38Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 3 (2016): Ilmu Kelautan; 135-142 Wardiatno, Yusli; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Bogor Agricultural University Qonita, Yuyun; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Bogor Agricultural University Hakim, Agus Alim; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Bogor Agricultural University 2016-09-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/10201 - en Three species of hippoid crabs are the target species of intertidal fishery along coastal line in District Cilacap, south Java; namely Emerita emeritus, Hippa adactyla and Albunea symmista. In Adipala sandy beach, Cilacap  an experiment was conducted to reveal the burrowing time and velocity of the crabs. The experiment was performed by removing the crabs from their burrows, measuring their carapace length, and releasing them immediately on the substrate. Burrowing time was measured from the start of burrowing to the disappearance of the entire carapace under the sediment surface. Among the three species, E. emeritus had the fastest burrowing time. As a consequence in terms of velocity, the burrowing velocity of Albunea symmista was higher than that of Hippa adactyla and Emerita emeritus; meaning that with the same size A. symmista needs longer time to burrow. By evaluating with other previous studies, the burrowing time and burrowing velocity of the three sand crabs were comparable. The ability of fast burrowing in the three species seems likely to be the advantage for their survival in large wave disturbed coarse sandy habitat and for their ability to widely exist along the sandy coast of south Java. Keywords: behavior; Indian ocean; intertidal; sand crab; south Java; swash zone

oai:ojs.ejournal.undip.ac.id:article/70764 2026-02-27T19:11:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/70764 2026-02-27T19:11:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 1 (2026): Ilmu Kelautan; 37-48 Karosekali, Jasiel Junior; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Kholilah, Nenik; Program Study of Marine Science, Faculty of Agriculture, University of Mataram Syam, Almay Atsiil Harits; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Subagiyo, Subagiyo; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Wijayanti, Diah Permata; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Bachtiar, Muggi; Graduate School of Engineering and Science, University of The Ryukyus 2026-03-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/70764 COI; Demak Waters; DNA Barcoding; Haplotypes; White Shrimp en White shrimp is one of the largest artisanal capture fisheries commodities in Demak. The utilization of these shrimps often overlooks their species category as they are mostly white in appearance. Growing trend of shrimp fishing may affect shrimp management due to population declination to the genetic level since the genetic data are insufficient. Hence, we aim to identify and study the genetic diversity of white shrimp caught in Demak Waters to provide an overview as a reference for fishery improvement project. A random purposive sampling method was used to collect a total of 90 white shrimp specimens from four fishing grounds (Babalan, Gojoyo, Menco, and Seklenting) in the Demak Waters. Specimens were extracted using Chelex 10%, amplified using PCR, and sequenced by the Sanger method based on the mtDNA COI gene. This research revealed the presence of five species of white shrimp: Penaeus merguiensis, Fenneropenaeus penicillatus, Penaeus vannamei, Metapenaeus brevicornis, and Metapenaeus ensis. The genetic diversity studies were continued using the Penaeus merguiensis species only. The results showed 17 haplotypes with a genetic diversity (Hd) of 0.6936 and a nucleotide diversity of 0.00108, which express moderate genetic diversity. Population analysis using Analysis of Molecular Variance (AMOVA) indicated a non-significant difference between the four study populations (panmictic population) with an FST value of 0.00756 (P-value < 0.05). Based on these results, an adequate management of stock is important. For instance, an open-closed season is needed in order to sustain and reduce capture pressure on the white shrimp population in Demak waters.

oai:ojs.ejournal.undip.ac.id:article/2266 2012-02-28T21:37:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2266 2012-02-28T21:37:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 4 (2005): Jurnal Ilmu Kelautan; 213-220 Bachtiar, Tonny; Program Studi Oseanografi, Jurusan Ilmu Kelautan, Universitas Diponegoro Program Magister Ilmu Lingkungan, Universitas Diponegoro Program Magister Kesehatan Lingkungan, Universitas Diponegoro Khasanah, Uswatun; Program Studi Oseanografi, Jurusan Ilmu Kelautan, Universitas Diponegoro Radjasa, Ocky Karna; Program Studi Ilmu Kelautan, Jurusan Ilmu Kelautan, Universitas Diponegoro Suhartono, Edi; Program Magister Ilmu Lingkungan, Universitas Diponegoro Hardiyanto, Agus; Jurusan Teknik Kimia, Universitas Diponegoro Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2266 en Penelitian ini dilakukan pada kondisi musim kemarau (Agustus 2003, monsun Timur), dan pada kondisi musim hujan (Maret 2004, kondisi monsun Barat), pada tiga kondisi lingkungan, yaitu: sungai dan muara Sungai Demaan, dan perairan pantai Kartini Jepara. Pengukuran beberapa parameter kualitas air dan pengambilan sampel air dilakukan pada 12 stasion. Dengan menggunakan metoda Indeks Pencemaran (pollution indexs) diketahui bahwa indeks pencemaran pada kondisi musim kemarau mempunyai nilai yang lebih tinggi dari pada kondisi musim hujan, baik di lingkungan sungai, muara, naupun perairan pantai. Kondisi lingkungan sungai pada kondisi musim kemarau mempunyai kriteria pencemaran cemar berat, dengan IP 11,48, pada kondisi musim hujan menjadi cemar ringan, dengan IP 4,49. Pada kondisi lingkungan muara saat musim kemarau, termasuk cemar sedang dengan IP 6,71, sedangkan pada kondisi musim hujan menjadi cemar ringan, dengan IP menjadi 3,11. Status mutu air di perairan pantai ke arah laut hingga stasiun kontrol termasuk dalam cemar ringan, baik pada kondisi musim kemarau maupun kondisi musim hujan. Secara umum pola penyebaran Indeks Pencemaran pada monsun Timur dan monsun Barat, mempunyai pola yang relatif tinggi di sekitar muara dan menurun dengan meningkatnya jarak dari muara, dan tersebar mengikuti dinamikaperairan ke Selatan, kemudian ke Baratdaya mengikuti bentuk pantai Teluk Kartini.Kata kunci: indeks pencemaran, monsun, muara, perairan pantai, sungaiThis research was conducted on the condition of dry season (August 2003, East monsoon), and the condition of wet season (March 2004, West monsoon), on three environmental conditions: river and river mouth ofDemaan River, and Kartini coastal waters, Jepara. Measurement of several water quality parameters and collecting of water samples was carried out at 12 stations. By using Pollution Index method, it could be recognized that pollution indexes (PI) in the river, river mouth, and coastal waters during dry season were higher than during wet season. In the river environment during dry season was heavy polluted with PI 11.48,and during wet season became light polluted with PI 4.49. River mouth environment during dry season was fairly polluted with PI 6.71, and during wet season became light polluted with PI 3.11. The status waterquality of coastal water to the sea direction until control station was in light polluted, both in dry and wet seasons. In general, the pattern distribution of PI in East and West monsoon were relatively higher around theriver mouth and decreased with increasing of distance from the river mouth, and distributed by dynamic of waters to the South, and then to the Southwest went along the coast of Kartini Bay.Key words: pollution index, monsoon, river mouth, coastal waters, river.

oai:ojs.ejournal.undip.ac.id:article/29964 2021-10-13T00:56:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/29964 2021-10-13T00:56:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 3 (2020): Ilmu Kelautan; 91-96 Ningsih, Dwi Lestari Widya; Marine Science Study Program, Diponegoro University Trianto, Agus; Marine Science Study Program, Diponegoro University Widowati, Ita; Marine Science Study Program, Diponegoro University Magdugo, Rexie; Université Bretagne Sud Hurtado, Anicia; Integrated Services for the Development of Aquaculture and Fisheries Marty, Christel; Université Bretagne Sud Bourgougnon, Nathalie; Université Bretagne Sud 2020-09-02 21:15:50 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/29964 bioactivity; seaweed; Sargassum sp; Herpes Simplex Virus (HSV) en Marine algae known as one producers of bioactive compounds.  This study aims to analyze the cytotoxicity and antiviral activity in Sargassum polycystum and Sargassum ilicifolium tested with Herpes Simplex Virus (HSV).   The polysaccharides extract of algae was used in this study, as sulfated polysaccharides have been reported has bioactivity.  Cytotoxicity either antiviral could be correlated with the sulfate content as well as nature and chemical composition of the polysaccharides. Cytotoxicity and antiviral analysis based upon cell viability. Using the Vero cell / HSV-1 model, cytotoxicity was evaluated by incubating cellular suspensions (3.5×105 cells.mL-1) with various dilutions (concentration from 1 to 500 µg.mL-1, four wells per concentration) of fractions in 96-well plates (72h, 37°C, 5% CO2) in Eagle's MEM containing 8% FCS.  The cells were examined daily under a phase-contrast microscope to determine the minimum concentration of hydrolysate dry matter that induced alterations in cell morphology, including swelling, shrinkage, granularity and detachment. Algae S. illicifolium was found to have the highest cytotoxic content in each solution compared to S. polycystum. Algae S. illicifolium in KOH 4M (cellulose) reached 2,707 µg.ml-1, then HCl pH 2 (fucoidan) was 2,477 µg.ml-1, then CaCl2 2% (fucoidan) was 2,362 µg.ml-1, and in Na2CO3 3% (alginates) was 2,134 µg.ml-1. For antiviral, S. polycystum contained the highest antiviral compounds compared to S. illicifolium with KOH 4M (cellulose) solution was reached 67.02 µg.ml-1.  Then in Na2CO3 3% (alginates) which was 33.25 µg.ml-1, then CaCl2 2% (fucoidan) which was 31.62 µg.ml-1,and HCl pH 2 (fucoidan) was 30.08 µg.ml-1.  After all, the highest bioactivity compounds was found with KOH 4M (cellulose) for  cytotoxicity in S. ilicifolium and antiviral activity in S. polycystum.

oai:ojs.ejournal.undip.ac.id:article/7068 2017-08-19T22:44:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7068 2017-08-19T22:44:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 2 (2013): Ilmu Kelautan; 61-70 Kusmanto, Edi; Pusat Penelitian Oseanografi – Lembaga Ilmu Pengetahuan Indonesia, Jl. Pasir Putih I, Ancol Timur, Jakarta, Indonesia, 14430 Setyawan, Wahyu Budi; Pusat Penelitian Oseanografi – Lembaga Ilmu Pengetahuan Indonesia, Jl. Pasir Putih I, Ancol Timur, Jakarta, Indonesia, 14430 2013-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7068 en Perairan pesisir Pangandaran adalah bagian dari perairan pesisir Teluk Parigi dan merupakan bagian yang paling tenang. Keadaan tersebut menyebabkan pantai Pangandaran berkembang menjadi tempat tujuan wisata pantai yang terkenal. Penelitian dilakukan di bagian pantai dimana arus rip diketahui sering terjadi. Gambaran tentang arus rip dilakukan dengan pengamatan visual dan pendekatan analisis kondisi morfologi pantai, batimetri atau morfologi dasar laut, kondisi gelombang, kecepatan dan arah arus, serta kekeruhan. Hasil penelitian ini menunjukkan bahwa arus rip merupakan kejadian yang umum di kawasan pesisir Teluk Parigi, dan sering muncul di bagian tertentu pantai Pangandaran yang telah dipandang aman. Swell dengan kisaran periode 6,57– 8,91 dt dari Samudera Hindia dengan arah hampir tegak lurus garis pantai diduga merupakan gelombang pencetusnya. Hasil penelitian menunjukkan enam arus rip dengan kecepatan berkisar dari 0,8–1 m.dt-1. Rekaman data kekeruhan membuktikan arus rip tersebut membawa muatan sedimen dari tepi pantai ke tengah laut. Data batimetri di lokasi penelitian memperlihatkan adanya morfologi dasar laut yang bergelombang membentuk punggungan dan lembah memanjang dari pantai ke arah laut lepas. Posisi kejadian arus rip yang tidak spesifik di lembah atau punggungan menunjukkan tidak adanya kontrol morfologi dasar laut terhadap kejadian arus rip. Kata kunci: arus rip, swell, pantai pasir, perairan pesisir, Pangandaran Pangandaran coastal waters is coastal tourism site that situated at the calmest part of Parigi Bay coastal waters. The favorable coastal area condition has made the coastal zone growth to be favorite coastal tourism site. The study site was coastal segment where rip currents frequently occur. This research was conducted by visual observation of rip currents and coastal morphology analysis approach, bathymetry survey, wave conditions, the speed and direction of currents, and turbidity. Results of this study indicate that rip currents are common phenomena at the Parigi Bay coastal area, and the currents frequently occur at several parts of the Pangandaran coastal zone, which are supposed to be safe. The rip currents could be identified visually. Swell with periods of 6.57 to 8.91 s propagating from the Indian Ocean in nearly normal direction to the coastline of Pangandaran could be the cause of rip currents. During field work of this study, it was recorded the existing of six rip currents with speeds in the range of 0,8–1 m.s-1. Obtained backscatterance records indicated that the recorded rip currents transport sediment load seaward from swash zone. Bathymetry data records of the study area showed an existing of undulating submarine morphology with axis lines normal to coastline. However, position of the rip current occurrence had no a good correlation with the undulating morphology. The facts indicate that no control of seabed morphology on rip current occurrence.   Keywords: rip current, swell, sandy beach, coastal waters, Pangandaran

oai:ojs.ejournal.undip.ac.id:article/15067 2021-10-13T05:36:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/15067 2021-10-13T05:36:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 3 (2017): Ilmu Kelautan; 105-110 Naranji, Muddula Krishna; Andhra University Velamala, Govinda Rao; Andhra University Sujatha, Kandula; Andhra University 2017-08-22 13:09:24 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/15067 en Parascorpaena mossambica is one of the rare species of Scorpaenidae in the Visakhapatnam coastal waters, India. Ten specimens are characterized by Dorsal fin IX 9; Anal fin III 5-6; Pectoral fin rays 15; Lateral line scales 43-44; Lateral line Pored scales 23-24; Lateral transverse scale scales 6-7/1/12-14; lachrymal bone with two lower strong antrose spines, anterior pointed and directed forward, tip reaching dorsal margin of upper lip, covered with skin; posterior one directed forward and slightly downward; suborbital with three spines. Only few records have been made in the whole Indian waters. Due to its rarity, P. mossambica is poorly studied and little known about their biology, ecology and distribution. In the present study provides additional data on this rare species. In particular, we describe its habitat, ecology, presence and distribution with several new records in Indian waters. Keywords: Scorpaenidae, fish, Parascorpaena mossambica, Visakhapatnam

oai:ojs.ejournal.undip.ac.id:article/2297 2012-03-01T08:43:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2297 2012-03-01T08:43:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 2 (2005): Jurnal Ilmu Kelautan; 68-71 Rahardjo, M F; Departemen Manajemen Sumberdaya Perairan Fakultas Perikanan dan Ilmu Kelautan, IPB, Bogor Situmorang, Charles P.H.; Departemen Manajemen Sumberdaya Perairan Fakultas Perikanan dan Ilmu Kelautan, IPB, Bogor Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2297 en Penelitian dilaksanakan selama enam bulan dari bulan November 2002 – April 2003, dengan tujuan mengkaji menu makanan ikan tetet (Johnius belangerii Cuv.) di perairan pantai Mayangan. Penangkapan ikan contoh dilakukan sebulan sekali dengan menggunakan jaring insang dan jaring rampus dengan mata jaring 1,5 – 3 inci. Jumlah ikan yang dikumpulkan sebesar 1.548 ekor dengan kisaran panjang total 71- 225 mm. Kebiasaan makanan dihitung dengan metode indeks bagian terbesar. Hasil penelitian menemukan bahwaPenaeus semisulcatus, Acetes, dan Clupea fimbriata merupakan makanan utama ikan ikan tetet. Tidak terjadi perubahan dalam variasi makanan, kecuali perubahan dalam proporsinya setiap bulan.Kata kunci: makanan, ikan tetet, indeks bagian terbesar, perairan pantaiThe research was conducted during six months from November 2002 – April 2003 in order to investigate the diet composition of belanger crokers (Johnius belangerii Cuv.) in Mayangan coastel waters. Fish samples were captured using gillnet and bottom gillnet with mesh sizes varying from 1,5 – 3 inch.The number of fish collected was 1,548 fish, which total length ranged 71-225 mm. For food habits analysis, the index of preponderance method was used. The result indicates that the main foods are Penaeus semisulcatus, Acetes, and Clupea fimbriata. Monthly diet shift change does not occur in organism, but their proportion.Key words: diet, belanger’s croaker, index of preponderance, coastal waters

oai:ojs.ejournal.undip.ac.id:article/37219 2021-10-13T00:50:47Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/37219 2021-10-13T00:50:47Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 2 (2021): Ilmu Kelautan; 79-86 https://ejournal.undip.ac.id/index.php/ijms/article/download/37219/112476 Adibrata, Sudirman; Department of Aquatic Resources Management, Bangka Belitung University Yusuf, Muh.; Department of Oceanographic, Diponegoro University Irvani, Irvani; Department of Mining Engineering, Bangka Belitung University Firdaus, Maulana; Department of Agribusiness Management, Graduate School of Agriculture, Tokyo University of Agriculture 2021-05-28 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/37219 distributions; environmental impact; heavy metal; mining; Pb and Cu en The dynamics of heavy metals (Pb and Cu) distribution near sea mining locations can show a negative impact on fisheries resource management. The study was conducted at the coastal area of Tanah Merah Beach, Central Bangka Regency, the geographical location at 02o12'50 "S and 106o13'00" E. This study aims to determine the extent of heavy metals (Pb and Cu) distribution adjacent sea mining field and its impact on marine tourism and fisheries. Purposive sampling method was used to identify the sampling locations from 13 closest locations to the farthest from marine mining sources. The result show that the closest and farthest Pb and Cu values from the tin mining activities were 0.16 mg.L-1; 0.03 mg.L-1 and 0.02 mg.L-1; <0.003 mg.L-1. The Hydro-oceanographic conditions from the highest to the lowest water currents of 0.03 m.s-1 - 0.001 m.s-1. This research represented the east monsoon, which showed that the heavy metal distributions dynamics are not too distance-reaching due to weak water currents, so that the dilution and sedimentation rate is slow. It is stated that the waters are polluted where the highest contamination value is indicated by the location closest to the source of marine mining and further weakened at the location farthest from the source of pollutants. Environmental impact from that activity has significantly threatened marine tourism and fishery activities by reducing economic benefits that given from marine and coastal environmental. Urgently, it is necessary to regulate like zoning tin mining activities and sites for the sustainable common purposes and prevent conflicts.

oai:ojs.ejournal.undip.ac.id:article/7185 2020-04-17T05:58:53Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7185 2020-04-17T05:58:53Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 1 (2014): Ilmu Kelautan; 1-10 Supriadi, Supriadi; Department of Marine Science, Faculty of Marine Science and Fisheries, Hasanuddin University, Jl. Perintis Kemerdekaan Km. 10. Tamalanrea, Makassar, Indonesia 90245 Kaswadji, Richardus F; Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Jl. Agatis No. 1, Bogor, Indonesia 16680 Bengen, Dietrich G; Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Jl. Agatis No. 1, Bogor, Indonesia 16680 Hutomo, Malikusworo; Research Centre for Oceanography, Indonesian Institute of Sciences Jalan Pasir Putih 1. Ancol, Jakarta Utara, Indonesia 14430 2014-03-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7185 en Konsep blue carbon yang diperkenalkan oleh UNEP, FAO dan UNESCO pada tahun 2009 memasukkan padang lamun sebagai salah satu ekosistem yang mempunyai peran dalam penyerapan karbon global. Karbon yang diserap disimpan dan dialirkan dalam beberapa kompartemen, antara lain di sedimen, herbivora, kolom air, ekosistem lain dan dalam bentuk biomassa. Penelitian dilakukan di Pulau Barranglompo, Makassar, untuk melihat potensi stok karbon yang tersimpan dalam biomassa lamun. Kepadatan lamun diukur dengan melakukan sampling menggunakan metode transek kuadrat dengan ukuran 50cm x 50cm. Sedangkan untuk biomassa dilakukan dengan transek 20cm x 20cm. Hubungan antara kepadatan, biomassa dan kandungan karbon dari lamun digunakan untuk menentukan jumlah stok karbon. Kepadatan lamun disurvei pada 236 titik, sedangkan untuk pengambilan sampel biomassa dilakukan pada 30 titik. Hasil penelitian menunjukkan bahwa komunitas lamun mempunyai total stok karbon sebesar 73,86 ton dari total luas padang lamun 64,3 ha. Karbon di bawah substrat sebesar 56,55 ton (76,3%), lebih tinggi dibanding karbon di atas substrat yang hanya 17,57 ton (23,7%). Jenis lamun Enhalus acoroides menyumbang lebih dari 70% terhadap total stok karbon. Berdasarkan kelas karbon, kontribusi terbesar ditemukan pada kelas 100-200 gC.m-2 sebesar 29,41 ton (39,7%). Hasil ini menunjukkan bahwa ekosistem lamun berperan sangat penting dalam menjaga stok karbon di laut sehingga perlu mendapatkan perhatian untuk konservasinya. Kata kunci: konsep blue karbon, lamun, Barranglompo   Blue carbon concept as introduced by UNEP, FAO and UNESCO in 2009 included seagrass beds as one ecosystem having a significant role in global carbon absorption. Absorbed carbon was stored and distributed in various compartments such as in sediments, herbivores, water column, other ecosystems and in form of biomass. The research was conducted in Barranglompo Island, Makassar City to analyze the potency of carbon stock that stored within seagrass biomass. Seagrass density was sampled using quadrat transect method with size of 50cm x 50cm. While for biomass was done by harvesting seagrass at transect of 20cm x 20cm in root penetration depth. Relationship between density, biomass and carbon content of seagrass were used to determine total carbon stock. Seagrass density was surveyed at 236 points, while for biomass sampling was conducted in 30 points. The results showed that seagrass community had total carbon stocks as much as 73.86 tonnes from overall 64.3 ha of seagrass bed areas.  Below ground carbon had 56.55 tonnes (76.3%), higher compared to that aboveground which only 17.57 tonnes (23.7%). Seagrass species Enhalus acoroides contributed more than 70% to the total carbon stocks, whereas, based on the carbon classes, the highest contribution was found at class 100-200 gC.m-2 i.e. 29.41 tonnes (39.7%). These results suggest that seagrass ecosystem plays an important role in maintaining the carbon stock in the ocean and should receive good attention for its conservation. Keywords: blue carbon concept, seagrass, Barranglompo

oai:ojs.ejournal.undip.ac.id:article/58874 2024-12-10T15:14:41Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/58874 2024-12-10T15:14:41Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 3 (2024): Ilmu Kelautan; 393-402 Haris, Abdul; Research Center for Process and Manufacturing Industry Technology, National Research and Innovation Agency El Mouchtari, El Mountassir; Department Chimie, Faculty Poly Disciplinary of Safi, Laboratory of Analytical and Molecular Chemistry Molecular Chemistry, Materials and Catalysis Laboratory, Faculty of Sciences and Technologies, Sultan Moulay Slimane University Nurshofia, Winarni; Fisheries and Marine Science Faculty, Jenderal Soedirman University Putranto, Yogi; Marine and Fisheries Resources Monitoring Station, Ministry of Maritime Affairs and Fisheries Hidayat, Rizqi Rizaldi; Fisheries and Marine Science Faculty, Jenderal Soedirman University Husni, Iqbal Ali; Fisheries and Marine Science Faculty, Jenderal Soedirman University Hendrayana, Hendrayana; Fisheries and Marine Science Faculty, Jenderal Soedirman University Mahdiana, Arif; Fisheries and Marine Science Faculty, Jenderal Soedirman University Sulistyo, Isdy; Fisheries and Marine Science Faculty, Jenderal Soedirman University Hidayati, Nuning Vita; Aquatic Resources Department, Fisheries and Marine Sciences Faculty, Jenderal Soedirman University 2024-09-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/58874 Segara Anakan; Hydrocarbons; Crude oil; Bioremediation en Polycyclic Aromatic Hydrocarbons (PAHs) have the potential to contaminate the coastal area of Plawangan Timur, Cilacap, Indonesia. Therefore, this research aims to determine the composition, distribution, source, and contamination level of PAHs in this region. Sediment samples were taken at seven stations. The research findings indicate that among the 16 types of PAHs, the proportion of each PAH varied between 3-12%. Notably, Benzo(a) Pyrene (BaP) had the highest proportion at 12%, while Naphthalene had the lowest proportion at 3%. According to the distribution pattern, PAHs with a high molecular weight (HMW) are more prevalent than those with a low molecular weight (LMW). The total amount of PAHs ranged from 185 to 1289.9 mg.kg-1 (dw), with an average of 1016.97 mg.kg-1 (dw). Using a diagnostic ratio, it was determined that the origin of the PAHs was either petrogenic, pyrogenic, mixed petrogenic and pyrogenic, or pyrolytic. As a result, Plawangan Timur's degree of pollution was classified as a very high polluted. The average concentration value of each PAHs is higher than the values for the Effect Range Low (ERL) and Effect Range Median (ERM) ranges, indicated there is a significant ecological risk that could have negative consequences on marine life and the ecosystem. It is urgently to handle PAHs pollution due to their relatively high content in sediments. This can be achieved by improving the management of wastewater treatment plants (WWTPs) for industry, optimizing the role of mangrove forests in reducing pollution in the waters, as well as building and increasing collaboration between related agencies in the prevention of marine oil spills.

oai:ojs.ejournal.undip.ac.id:article/1787 2017-08-19T22:48:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1787 2017-08-19T22:48:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 4 (2010): Ilmu Kelautan; 202-213 Wardiatno, Yusli; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University (IPB), Kampus IPB Darmaga,Bogor 16680, Indonesia, Telp/Fax: 0251-8622932. Email: ywardiatno@hotmail.com Irfangi, Chikarista; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University (IPB), Kampus IPB Darmaga,Bogor 16680, Indonesia, Telp/Fax: 0251-8622932 Hestirianoto, Totok; Department of Marine Sciences and Technology, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University (IPB), Kampus IPB Darmaga, Bogor 16680, Indonesia. 2012-02-11 06:01:58 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1787 en Kepulauan Seribu has been considered as one of the dolphin migration routes. This is based on the number of reports from fishermen and communities in Kepulauan Seribu on the existence of cetacean. The purpose of this study was to assess the type, behavior, deployment location, and estimate the number of dolphins found in Kepulauan Seribu. Research was conducted on May 10th to May 27th, 2010 and 22nd June to 3 July 2010. Observations were made every day, except Friday, and started at 7:00 a.m. to 6:00 pm. Observation by boat was used in the research. Observation of the amount, type, and behavior of cetacean had been done visually. Based on research results, it can be concluded that the species of dolphins found in Kepulauan Seribu are Delphinus delphis, Pseudorca crassidens, Stenella longirostris, and Tursiops truncatus, with a total number of 145 individuals. Species of dolphins are most often found is T. truncatus, whereas the least common type is Delphinus delphis. In addition there are also calf and unidentified species. The location of the encounter with the dolphins most often occurs around Pulau Gosong Congkak (Karang Congkak) and Karang Lebar. Judging from the observed behavior, it can be said that Kepulauan Seribu is a foraging area and migration routes for cetacean. In addition, Kepulauan Seribu was also considered as nursery ground for calf. Key words : Cetacean, dolphin, Kepulauan Seribu Kepulauan Seribu diduga sebagai salah satu rute migrasi berbagai jenis lumba-lumba.  Hal ini didasarkan pada jumlah laporan dari nelayan dan masyarakat di Kepulauan Seribu pada keberadaan lumba-lumba. Tujuan dari penelitian ini adalah untuk menilai jenis, perilaku, lokasi penyebaran, dan estimasi jumlah dan jenis Cetacean yang ditemukan di Kepulauan Seribu. Penelitian ini dilakukan pada 10-27Mei dan 22 Juni-3 Juli 2010. Pengamatan dilakukan setiap hari, kecuali hari Jumat, mulai jam 7:00-18:00. Penelitian ini menggunakan metode eksplorasi dengan menggunakan perahu motor. Pengamatan jenis, jumlah, dan perilaku  lumba-lumba telah dilakukan secara visual. Berdasarkan hasil penelitian,dapat disimpulkan bahwa spesies lumba-lumba yang ditemukan di Kepulauan Seribu adalah Delphinus  delphis, Pseudorca crassidens, Stenella longirostris, dan Tursiops truncatus, dengan jumlah total 145 individu. Spesies lumba-lumba yang paling sering ditemukan adalah T. truncatus, sedangkan tipe paling umum adalah Delphinus delphis. Selain itu ditemukan juga bayi lumba-lumba dan spesies yang tidak teridentifikasi. Lokasi perjumpaan dengan lumba-lumba paling sering terjadi di sekitar Pulau Gosong Congkak (Karang Congkak) dan Karang Lebar.  Dilihat  dari  perilaku yang diamati, dapat dikatakan bahwa Kepulauan Seribu merupakan daerah mencari makan  dan  rute  migrasi Cetacean. Selain itu, Kepulauan Seribu juga  diduga sebagai daerah asuhan bagi bayi lumba-lumba. Kata kunci : Cetacean, lumba-lumba, Kepulauan Seribu

oai:ojs.ejournal.undip.ac.id:article/19315 2019-03-26T05:29:35Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19315 2019-03-26T05:29:35Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 1 (2002): Jurnal Ilmu Kelautan; 7-16 Wiiayanti, Diah Permata; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro Widiatmoko, Wisnu; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro Ambarwati, Ambarwati; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro 2008-01-08 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19315 en Penelitian terhadap agresi interspesifik antara koral hermatipik dari Pulau Panjang dilakukan di akuarium antara bulan September - Desember 2000 di Laboratorium Kelautan Teluk Aawur Iepara. Resultan hirarki dibuat dengan melakukan rangking terhadap kemampuan suatu spesies untuk 'merusak' kompetitor. Studi lapangan dilakukan untuk mekonfirmasi apakah spesies paling agresif merupakan spesies yang mendominasi. Hasil munjukkan ditemukannya proses fusi terhadap semua pasangan dari koloni yang sama. Histoinkompatibilltas ditemukan setelah seminggu waktu kontak dengan adanya respon penolakan. Hal ini menunjukkan bahwa digesti oleh filamen mesenterlal merupakan mekanisme paling penting dalam proses agresi, diikuti dengan overgrowth dan unindirectional woundings yang diakhiri dengan reaksi penolakan. Stylophora pistillete merupakan spesies paling agresif, diikuti oleh Pectinia sp. Dan Pocillopora damicornis. Sedangkan Montipora dan Acropora memiliki sifat agresif lemah. Hasil ini menunjukkan bahwa karakteristik morfologi berperan penting dalam intereksi kompetitif. Tidak ditemukan interaksi intransitif pada hirarki yang ada. Namun studi lapangan menunjukkan bahwa spesies paling agresif tidak selalu merupakan spesies yang mendominasi. Agresifitas diduga bukan merupakan satu-satunya factor yang menentukan distribusi dan zonasi karang di Pulau Panjang. Kata kunci: Agreasi, interspesiflk, karang, Pulau Panjang Interspecific aggression between hermatypic corals on Panjang Island reef has been investigated by aquarium study. This study was performed between September and December 2000 at Marine Station Research Center, Kampus Teluk Awur Jepara. Resultant hierarchy was constructed by ranking the abilities of species to damage competitors. Field study was conducted to check whether the most highly aggressive species are those occupying the greatest area of sea floor. Fusion was observed In all same colony pairs by the end of experiment, regardless duration after initial contact. Hlstoincompatibility was visible after a week of contact with rejection was the most common response. It suggest that digestion by mesenterial filaments is the most important mechanism of aggression followed by overgrowth and unidirectional woundings that ended as a stand-offs reaction. Stylophora pistillata being the most highly aggressive species in Panjang Island followed by Pectinia sp and Pocillopora demtcornts while Montipora and Acropora are weakly aggressive. This result confirmed that differences in morphological characteristics play an important role during competitive interactions. No intransitive interaction was observed from the present hierarchy. Field study revealed that the most highly aggressive species is not necessary to those occupying the greatest area of sea floor. Aggression may not the single factor which influence spatial distribution and zonation of coral reefs in Panjang Island.Keywords: interspecific anggression, corals, Panjang Island

oai:ojs.ejournal.undip.ac.id:article/2338 2012-03-03T05:38:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2338 2012-03-03T05:38:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 4 (2004): Jurnal Ilmu Kelautan; 196-201 Endrawati, Hadi; Laboratorium Biologi Kelautan Jurusan Ilmu Kelautan FPK UNDIP Semarang, Indonesia Zainuri, Muhammad; Laboratorium Biologi Kelautan Jurusan Ilmu Kelautan FPK UNDIP Semarang, Indonesia Suryono, Chrisna A; Laboratorium Pengelolaan Wilayah Pesisir Jurusan Ilmu Kelautan FPK UNDIP Semarang, Indonesia Suryono, Suryono; Laboratorium Pengelolaan Wilayah Pesisir Jurusan Ilmu Kelautan FPK UNDIP Semarang, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2338 en Penelitian ini bertujuan untuk mengetahui kematangan gonad dan fekunditas kepiting bakau (Scylla serrata) dengan sistem kultivasi dalam karamba di tambak garam berdasarkan perlakuan kepadatan benih yangberbeda.Benih kepiting berjumlah 144 ekor dengan berat awal rata-rata 250 gram, terbagi kedalam empat perlakuan kepadatan, masing masing A ( 6 ekor ), B ( 8 ekor ), C ( 10 ekor ) dan D ( 12 ekor ), yang masing– masing diulang empat kali dipelihara dalam karamba berukuran 1 x 0,75 x 1 meter. Pemeliharaan dilakukan selama 2 minggu ( 8 – 23 Oktober 2001 ). Hasil pengamatan kematangan gonad berdasarkan dianalisis berdasarkan Indeks Kematangan Gonad serta fekunditas. Kematangan gonad kepiting bakau Scylla serrata tercapai secara merata dengan indeks berkisar diantara 42.87 – 68.70, dengan indeks tertinggi sebesar 65.12 ± 2.39 pada perlakuan C ( kepadatan 10 ekor per 0.75 m 2 ). Sedangkan fekunditas berkisar diantara 60000 –120000 butir telur, dengan perlakuan tertinggi dicapai pada perlakuan B dengan kisaran jumlah telur 96000 – 120000 dan nilai rata – rata 110000 ± 12000 butir telur. Hubungan berat kepiting dengan fekunditas total Y = 567.9562 – 103477.337 X ( r = 0.7966 ). Fekunditas memberikan hasil linier menurun berdasarkan perlakuan dikarenakan kemampuan toleransi serta ruang gerak yang terlalu sempit dan persainganKata kunci : kepadatan, kematangan gonad, fekunditas, kepiting Scylla serrata.The aim of the research is to know the effect of different density on the gonad maturity and fecundity of mud crab ( Scylla serrata ) grown in the cage. This cage were put in salt water pond. Four treatments (density ), i.e. A ( 6 individual ), B ( 8 individual ), C ( 10 individual ) and D ( 12 individual ), with four replications, were applied. The average initial weight of the mud crab is 250 gram. These were grown for two weeks ( October 8 to 23, 2001 ). The mud crab gonad maturity and fecundity was analysed using the analysis based on the Gonad Maturation Index and Fecundity. The gonad maturity was found for almost of mud crab Scylla serrata. The gonad maturity index showed a value from 42.87 – 68.70, which the highest was reached by the treatment C ( with the density 10 individual per 0.75 m 2 ). The fecundity varies from 60000 –120000 eggs, which the highest was 110000 ± 12000 and reached by the treatment B ( with the density 10 individual per 0.75 m 2 ). The relationship between mudgrab weight and fecundity was Y = 567.9562 – 103477.337 X (r = 0.7966). The fecundity showed a decreased linierity due to the limitationspace cause by the level of density.Key words : density, gonad maturation, fecundity, mud crab Scylla serrata

oai:ojs.ejournal.undip.ac.id:article/42067 2022-06-18T08:23:33Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/42067 2022-06-18T08:23:33Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 1 (2022): Ilmu Kelautan; 45-52 Iksiroh, Husna El; Environmental Doctoral Study Programme, School of Graduate Study, Universitas Diponegoro Nautical Study Program, Semarang Merchant Marine Polytechnic Anggoro, Sutrisno; Aquatic Resources Department, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Abdurachim, Henna Rya; Environmental Doctoral Study Programme, School of Graduate Study, Universitas Diponegoro Subagiyo, Subagiyo; Marine Science Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro Ighwerb, Mostafa Imhmed; Faculty of Marine Resources, Asmarya Islamic University 2022-02-13 11:22:19 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/42067 Environmental; Tanjung Emas Port; Semarang; Pathogen Bacteria; Ballast water en The D-2 Ballast Water Management Convention standard regulates the requirements for the disposal of ballast water, which must not contain pathogenic bacteria, which are harmful to health and pollute the environment and the sustainability of local ecosystems. Tanjung Emas was chosen because it is one of the busiest ports in Indonesia to serve domestic shipping. In addition, there has never been a study examining the composition of bacteria carried through ballast water at the port of Tanjung Emas. This study aims to determine the content of pathogenic bacteria carried by the ballast water of ships docked at Tanjung Emas Port compared to the waters around the disposal and river flows around Tanjung Emas Port, Semarang. The samples were taken from 4 ships, 5 waters, and 2 rivers in Tanjung Emas area. The samples were analyzed biochemically to obtain the morphology of the bacteria present. The results showed that ballast water from the ships (KVOG, KMPS, and M) contains pathogenic bacteria: V. cholerae, E. coli, enterococci, S. typhii, S. desenteriae, Klebsiella, S. epidermidis, B. subtilis, and Actinobacteria. All types of that bacteria were also found in the Tanjung Emas waters except Actinobacteria. For three bacteria i.e. V. cholerae, E. coli, and enterococci whose levels exceed the threshold required by the BWM Convention and have the potential to pollute the Tanjung Emas environment. The water from the river did not contribute to the presence of V. cholerae bacteria in port waters, so the ballast water must be treated before being disposed of.

oai:ojs.ejournal.undip.ac.id:article/457 2014-12-23T07:52:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/457 2014-12-23T07:52:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 1 (2009): Jurnal Ilmu Kelautan; 33-41 martono, Martono Hardi, Safwan Ningsih, Nining Sari 2010-11-03 12:30:36 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/457 id Penelitian ini dilakukan untuk mempelajari variasi Eddy Mindanao dan Eddy Halmahera dalam skala tahunan yang mewakili kondisi El Nino dan La Nina. Metode yang digunakan dalam penelitian ini adalah pemodelan hidrodinamika barokiinik tiga dimensi yang disebut dengan A Coupled Hydrodynamical - Ecological Model for Regional and Shelf Seas (COHERENS). Data yang digunakan sebagai input model adalah batimetri, temperatur air, salinitas, angin, temperatur udara, curah hujan, penguapan, kecerahan, dan tekanan udara. Berdasarkan hasil simulasi diperoleh bahwa variabilitas Eddy Mindanao dan Eddy Halmahera dipengaruhi oleh fenomena El Nino dan La Nina. Secara umum diameter dan kecepatan Eddy Mindanao danEddy Halmahera saat El Nino lebih kecil dan saat La Nina lebih besar daripada saat normal.   Kata Kunci : Eddy Mindanao, Eddy Halmahera, El Nino, La Nina, Model COHERENS

oai:ojs.ejournal.undip.ac.id:article/8885 2017-10-27T08:50:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8885 2017-10-27T08:50:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 1 (2015): Ilmu Kelautan; 45-51 Kawaroe, Mujizat; Department of Marine Science, Bogor Agricultural University, Indonesia Setyaningsih, Dwi; Department of Marine Science, Bogor Agricultural University, Indonesia Negara, Bertoka Fajar SP; Department of Marine Science, Bogor Agricultural University, Indonesia Augustine, Dina; Department of Marine Science, Bogor Agricultural University, Indonesia 2015-03-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8885 en Agarase dapat mendegradasi agar ke oligosakarida dan memiliki banyak manfaat untuk makanan, kosmetik, dan lain-lain. Banyak spesies pendegradasi agar adalah organismelaut. Beberapa agarase telah diisolasi dari genera yang berbeda dari mikroorganisme yang ditemukan di air dan sedimen laut. Hypocreaceae sp. diisolasi dari air laut Pulau Pari, Kepulauan Seribu, Jakarta, Indonesia. Berdasarkan hasil identifikasi gen 16S rDNA dari 500 basis pasangan, isolat A10 memiliki 99% kesamaan dengan Hypocreaceae sp. Enzim agarase ekstraseluler dari Hypocreaceae sp. memiliki pH dan suhu optimum pada 8 TrisHCl (0,148 μ.mL-1) dan 50°C (0,182 μ.mL-1), masing-masing. Enzim Agarase dari Hypocreaceae sp. mencapai kondisi optimum pada aktivitas enzim tertinggi selama inkubasi dalam 24 jam (0,323 μ.mL-1). SDS page mengungkapkan bahwa ada dua band dari protein yang dihasilkan oleh agarase dari Hypocreaceae sp. yang berada di berat molekul 39 kDa dan 44 kDa dan hidrolisis Gelidium latifolium diperoleh 0,88% etanol. Kata kunci: enzim agarase, Hypocreaceae sp., hidrolisis, fungi, rDNA. Agarase can degradedagarto oligosaccharide and has a lot of benefits for food, cosmetics, and others. Many species of agar- degrader are marine-organism. Several agarases have been isolated from different genera of microorganisms found in seawater and marine sediments. Hypocreaceae sp. was isolated from sea water of Pari Islands, Seribu Islands, Jakarta, Indonesia. Based on the results of the 16S rDNA gene identification of 500 base pairs, A10 isolates had 99 % similarity toHypocreaceae sp. The extracellular agarase enzyme from Hypocreaceae sp. have optimum pH and temperature at 8 TrisHCl (0.148 µ.mL-1) and 50 °C (0.182 µ.mL-1), respectively. Agarase enzyme of Hypocreaceae sp. reach an optimum condition at the highest enzyme activity during incubation in 24 hours (0.323 µ.mL-1). SDS Page revealed that there are two bands of protein produced by agarase of Hypocreaceae sp. which are at molecular weight of 39 kDa and 44 kDa and hydrolisis of Gelidium latifolium obtained 0,88% ethanol. Key words: agarase enzym, Hypocreaceae sp., hydrolysis, marine fungi, rDNA 

oai:ojs.ejournal.undip.ac.id:article/58683 2025-06-25T07:35:55Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/58683 2025-06-25T07:35:55Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 2 (2025): Ilmu Kelautan; 163-173 Semedi, Bambang; Faculty of Fisheries and Marine Science, Brawijaya University Postgraduate School, Brawijaya University Diza, Novia Fara; Faculty of Fisheries and Marine Science, Brawijaya University Sari, Syarifah Hikmah Julinda; Faculty of Fisheries and Marine Science, Brawijaya University Wiadnya, Dewa Gede Raka; Faculty of Fisheries and Marine Science, Brawijaya University Lelono, Tri Djoko; Faculty of Fisheries and Marine Science, Brawijaya University Setyohadi, Daduk; Faculty of Fisheries and Marine Science, Brawijaya University Harlyan, Ledhyane Ika; Faculty of Fisheries and Marine Science, Brawijaya University Rahman, Muhammad Arif; Faculty of Fisheries and Marine Science, Brawijaya University Lee, Ming-An; Department of Environmental Biology and Fisheries Science, National Taiwan Ocean University 2025-06-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/58683 fishing grounds; GAM; southern waters of Java; Yellowfin tuna en The southern waters of Java are suitable to be the largest supplier of Yellowfin tuna exports in Indonesia, but have not efficiently produced the expected yield. This research minimizes these constraints by modeling the yellowfin tuna fishing grounds in the southern waters of Java based on oceanographic factors such as Sea Surface Temperature (SST), chlorophyll-a (CHL_A), Sea Surface Salinity (SSS), Sea Surface Height (SSH) using an integration between remote sensing, Geographic Information Systems (GIS), and the Generalized Additive Model (GAM) statistical method. This study used oceanographic factor data from Aqua MODIS Level-3 and Copernicus, while yellowfin tuna fishery production was obtained from Palabuhanratu Nusantara Fishing Port (NFP), Cilacap Ocean Fishing Port (OFP), and Pondokdadap Coastal Fishing Port (CFP). The modeling process used 80% of the data, while the remaining 20% was used to validate the model results. The order of influence of oceanographic parameters from largest to smallest is SST > SSS > SSH > CHL-A. The best model from the GAM analysis showed that the combination of four oceanographic parameters had the greatest influence on yellowfin tuna CPUE. The catch per unit effort (CPUE) of yellowfin tuna was predicted to be high in May-October and low in November-April. The prediction model had high accuracy because most of the fishing activity was in the HSI 0.4-0.5 range and the RMSEP value was 0.63. Yellowfin tuna were suitable in habitats distributed from inshore to offshore in June and July, but less suitable in December.  

oai:ojs.ejournal.undip.ac.id:article/2216 2012-03-06T11:08:35Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2216 2012-03-06T11:08:35Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 3 (2006): Jurnal Ilmu Kelautan; 126-132 Hartati, Retno; Laboratorium Biologi Kelautan-Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro,Semarang Yanti, Heri; SMKN Padang Cermin - Lampung Selatan Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2216 en Banyak faktor lingkungan yang diduga mempengaruhi aspek reproduksi Teripang Getah (Holothuria vagabunda) antara lain siklus bulan. Penelitian ini bertujuan untuk mempelajari tingkat kematangan gonad teripang getah (H. vagabunda) pada saat bulan penuh dan bulan baru. Pengambilan sampel dilaksanakan delapan kali pada saat bulanpenuh dan bulan baru (Januari-April 2004) di perairan Bandengan, Jepara. Terhadap gonad dilakukan pengamatan tingkat kematangan gonad; jumlah, percabangan, panjang dan diameter tubula; jumlah sakula, nilai IKG serta fekunditas dan diameter telurnya. Hasil penelitian menunjukkan bahwa gonad H. vagabunda saat bulan penuhberada pada stadia II-III sedang saat bulan baru berada pada stadia II-V. Jumlah, percabangan, panjang, dan diameter tubula, jumlah sakula serta nilai IKG meningkat seiring dengan meningkatnya TKG dan mencapai puncaknya pada stadia IV untuk kemudian menurun pada stadia V. Diameter telur dan fekunditas juga meningkat seiringdengan meningkatnya TKG dan mencapai puncaknya pada stadia IV. Nilai rata-rata IKG H. vagabunda tertinggi diperoleh pada saat bulan baru demikian pula dengan diameter telur dan fekunditas terbesar. Gonad H. vagabunda mencapai puncak perkembangannya pada saat bulan baru dan pemijahannya diperkirakan terjadi pada saat itu.Kata kunci  gonad, Holothuria vagabunda, bulan penuh, bulan baruThe Common black teat (Holothuria vagabunda) is one of marine resources in Indonesia with high economic value. Many environmental factors such as moon phase are assumed influencing their reproduction aspect. Thisresearch aimed to learn the common black teat (H. vagabunda) gonad during full and new moon. The samples were taken during full and new moon (January-April 2004) at Bandengan coastal waters, Jepara. The gonad samples were examined for gomad maturity stages; number, branch, length and diameter of tubula; number of saccula, IKG as well as fecundity and oocites diameter. The results showed that during full moon, H. vagabunda gonad were at stage II and III. Number of branch, length, sacculae, diameter of tubules and GI value increase as gonad maturity stage raised and the peak obtained at stage IV. The same result also happended for their oocites diameter and fecundity. The highest Gonadal Maturity Index (GMI), the biggest oocites diameter and fecunditywas reached during new moon and it’s predicted they were spawned during that time.Key words: gonad, Holothuria vagabunda, full moon, new moon

oai:ojs.ejournal.undip.ac.id:article/16187 2021-10-13T03:39:38Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/16187 2021-10-13T03:39:38Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 4 (2018): Ilmu Kelautan; 171-178 Setyadji, Bram; Research Institute for Tuna Fisheries Chodriyah, Umi; Research Institute for Marine Fisheries 2019-01-04 12:20:42 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/16187 fishing season; large pelagic fishes; purse seine; Tumumpa Manado Research Institute for Marine Fisheries; April E Supir; Adi Kuswoyo en Knowledge on seasonal fishing pattern is essential in fisheries research in order to increase the effectiveness of fishing and at the same time protecting the fishing ground from excessive fishing practices. Determining the seasonal fishing pattern of large pelagic fishes, namely large tuna (yellowfin and bigeye), small tuna (mackerel) and skipjack tuna were the objective of this study. Data from the 2013-2015 fishing operation time series were used to analyze the fishing season using the percentage average per unit effort (CPUE) method. The main focus of this study was purse seine fishery. The research showed that high fishing season of large pelagic fishes allegedly occurred during May to July, which reached its peak on May. On the other hand, low fishing season occurred during January to April, with the lowest on March. There were similarities between large tuna, small tuna and skipjack in term of their seasonal fishing pattern, although they did not show any good correlation (r<0.5). This might due to fact that even tough large tuna, small tuna and skipjack tuna shared the same ecological niche but apparently, they did not show any interaction (symbiosis) but competition.

oai:ojs.ejournal.undip.ac.id:article/2385 2022-04-06T18:18:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2385 2022-04-06T18:18:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 1 (2004): Jurnal Ilmu Kelautan; 54-60 Atmojo, Tri Yuni; Program Magister Ilmu Lingkungan Program Pascasarjana Universitas Diponegoro, Semarang, 50238 Bappedal Propinsi Jawa Tengah , Jl. Setiabudi Komplek Diklat Propinsi Jawa Tengah (kode pos 50263), Srondol, Semarang, Tlp./Fax : 024.7478813 e-mail : atmojost@yahoo.com Bachtiar, Tony; Jurusan Ilmu Kelautan, Universitas Diponegoro, Semarang, 50275 Pusat Studi Pesisir dan Laut Tropis, Universitas Diponegoro, Semarang, 50275 Radjasa, Ocky Karna; Jurusan Ilmu Kelautan, Universitas Diponegoro, Semarang, 50275 Pusat Studi Pesisir dan Laut Tropis, Universitas Diponegoro, Semarang, 50275 Sabdono, Agus; Jurusan Ilmu Kelautan, Universitas Diponegoro, Semarang, 50275 Pusat Studi Pesisir dan Laut Tropis, Universitas Diponegoro, Semarang, 50275 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2385 en Limbah domestik merupakan salah satu sumber utama pencemaran di perairan pantai pada negara yang sedang berkembang yang masih kurang mendapatkan perhatian serius bila dibandingkan dengan pencemaran oleh industri. Namun dengan terus meningkatnya aktivitas manusia di wilayah pesisir dan kesadaran akan pentingnya lingkungan bersih bagi kesehatan, estetika dan alasan ekologis lainnya, deteksi tentang kontaminasi limbah menjadi penting untuk diketahui secara lebih baik. Selama ini indikator kontaminasi limbah domestik ditentukan berdasarkan jumlah mikroorganisme intestinal khususnya kelompok bakteri coliform. Koprostanol diusulkan sebagai alternatif indikator limbah domestik, sehingga diperlukan kajian eksistensi koprostanol untuk persyaratan kelayakannya sebagai indikator, serta bakteri coliform sebagai pembanding. Penelitian dilakukan pada bulan Juli-Agustus 2003 pada lingkungan sungai, muara dan pantai di sungai Banjir Kanal Timur di Semarang. Analisa coliform dari sampel air dan sedimen dilakukan di laboratorium Mikrobiogenetika, FMIPA UNDIP Semarang dan analisa konsentrasi koprostanol dilakukan di laboratorium Kimia dan FisikaPusat (LAKFIP) UGM Yogyakarta. Hasil menunjukkan bahwa koprostanol dapat terdeteksi pada sedimen dan tidak terdeteksi pada kolom air. Eksistensi koprostanol didapatkan nilai tertinggi pada lingkungan perairansungai (14,9 μg/g) dibandingkan muara (1,04 μg/g), dan pantai (5,25 μg/g). Bakteri total coliform terdeteksi pada kolom air maupun sedimen pada lingkungan perairan sungai (2,80 x 104 sel/100 ml), muara (0,4 x104 sel/100 ml), dan pantai (0 - 0,4 x 104) sel/100 ml, sementara fecal coliform terdeteksi di lingkungan perairan sungai (2 x 104 - 2,8 x 104 ) sel/100 ml, dan muara (0,4 x 104 sel/100 ml), namun tidak terdeteksipada lingkungan perairan pantai.Kata kunci : Koprostanol, limbah domestik, indikator pencemaran, coliformDomestic waste is one of the major sources of the pollution in coastal waters of most developing, countries, which has got less attention than industrial pollution. However, along with the increase of human activitiesin coastal areas coupled with the importance of clean environment for the health, esthetics, and ecological reasons, the detection of waste contamination has become important to be recognized. So far, the indicator of domestic waste contamination has been intestinal microorganism, especially coliform bacteria. Coprostanol is a proposed alternative indicator in the detected domestic waste those, it is definitely important to study the existence of coprostanol and coliform bacteria in order to fine its application. The research carried out from July to August 2003 at the environmental waters of river, estuarine, and coastal of Ciliwung, Jakarta; Banjir Kanal Timur, Semarang, analysis of coliform form water and sediment samples was conducted at micro biogenetic laboratory Faculty of Mathematic and Natural sciences, Diponegoro University, meanwhile analysis of coprostanil concentration was performed at central laboratory of chemistry and physic UGM. The results showed that coprostanol was detected in sediment but not in the water phase at all locations. The existence of coprostanol was detected either at environmental waters of river (14,9 μg/g) or estuarine (1,04 μg/g), and coastal (5,25 μg/g). Total coliform bacteria were detected both in water column and sediment of river (2,80 x 104 ) sel/100 ml, at estuarine (0,4 x 104) sel/100 ml and coastal (0 - 0,4 x104) sel/100 ml, meanwhile fecal coliform bacteria were detected in environmental water of river (2 x 104 - 2,8 x 104 ) sel/ 100 ml, and at estuarine (0 - 4 x 104) sel/100 ml, but not detected at coastal area. The use of coprostanol to considered for the indicator alternative because the existence can influence by various condition at water of river and used of coliform bacteria as domestic waste contamination indicator require to be considered because owning various weakness.Key words : Coprostanol, coliform, domestic waste, pollution indicator

oai:ojs.ejournal.undip.ac.id:article/47721 2026-05-21T04:27:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/47721 2026-05-21T04:27:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 4 (2022): Ilmu Kelautan; 297-306 Ramli, Mona Fairuz; Department of Marketing, Faculty of Business and Science Management, Kolej Universiti Islam Ariffin, Ahmad Shabudin; Department of Supply Chain and Logistics, Faculty of Business and Science Management, Kolej Universiti Islam Zahar, Marziah; School of Business Management, College of Business, Universiti Utara Malaysia Sin, Aizat Md; Department of Supply Chain and Logistics, Faculty of Business and Science Management, Kolej Universiti Islam Rozaki, Zuhud; Department of Agribusiness, Universitas Muhammadiyah Yogyakarta 2022-12-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/47721 conversation; preservation; rehabilitation; mangrove restoration; endangered species en Mangrove forests are special type of coastal ecosystem characterized by their adaptations that enable plants to thrive in saline soil. Despite accounting for only about 1% of global forest coverage, mangroves are keystone ecosystems that provide a variety of critical ecological processes and environmental services. In recent years, there has been a considerable increase in interest in mangrove biodiversity. The lack of community-based organizations (CBO) on the awareness of conservation has a direct negative impact on endangered species. The aim of this is to analyze the conservation and preservation for mangrove in north coast area of Malaysia. Qualitative method was used to collect and analyzed the data, and supported with observations. The findings showed that mangrove conservation project in Kilim and Acheh River rivers are participated by the different stakeholders such as local government units (LGU), NGOs (PiFWA and Koperasi Komuniti Kampung Kilim Langkawi Berhad and Koperasi Nelayan Sungai Kubang Badak Langkawi Berhad), as well as a local community composed of fishermen, gleaners and business operator (travel agent). Those stakeholders are playing different role depend on their capacities. This study proves that mangrove forests are important for coastal area in Malaysia, and conservation efforts are needed to protect it. This finding also can be applied in other area. The contribution and participation of all parties also need for any conservation activities. The funding is crucial for supporting the sustainability of conservation program because some parts of conservation need it to be built such infrastructure or material for conservation.

oai:ojs.ejournal.undip.ac.id:article/561 2020-10-25T22:43:58Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/561 2020-10-25T22:43:58Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 4 (2008): Jurnal Ilmu Kelautan; 181-184 Djunaedi, Ali 2010-11-15 05:55:05 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/561 id Penyediaan Induk matanggonad sampaisaatinimasih merupakan kendala bagi pembenihan kepiting bakau. Penelitian ini bertujuan untuk mengetahui indeks kematangan gonad (IKG) kepiting bakau Scylla serrata dengan pemberian komposisi dan ransum harian pakan berbeda. Hasil penelitian menunjukkan bahwa komposisi dan ransum harian pakan berpengaruh nyata terhadap perkembangan gonad kepiting bakau. Indeks kematangan gonad tertinggi (16,71 %) dicapai pada perlakuan komposisi 25% pelet dan 75% cumi-cumi, serta ransum pakan 9% /hari. Sedangkan terendah (9,97%) pada perlakuan komposisi 100% pelet dan ransum pakan 3%/ hari. Hasil tersebut menunjukkan bahwa kandungan nutrisi dan jumlah pakanyang diberikan secara sinergi dapat mempercepatperkembangan gonad kepiting bakau.Kata kunci: nutrisi, kepiting bakau (Scylla serrata), indek kematangan gonad (IKG)

oai:ojs.ejournal.undip.ac.id:article/11378 2020-04-17T06:02:52Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/11378 2020-04-17T06:02:52Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 2 (2016): Ilmu Kelautan; 53-58 Ahmed, Quratulan; The Marine Reference Collection and Resources Centre, University of Karachi, 75270 Karachi, Pakistan Bat, Levent; Sinop University Fisheries Faculty, Department of Hydrobiology, TR57000 Sinop, Turkey 2016-06-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/11378 en Aim of this study was to measure cadmium and lead concentrations in the edible tissues of Saddle grunt Pomadasys maculatus (Bloch, 1793) from Karachi Fish Harbor different seasons of the year 2011.  Results showed that the concentration varied from 0.18 to 1.14 with a mean of 0.59 ± 0.05 mg.kg-1 for Cd and from 0.02 to 1.54 with a mean of 0.54 ± 0.05 mg.kg-1 for Pb. These concentrations are higher than the maximum permissible values in European and other international regulations (Global Agricultural Information Network Report for China, Russian Federation , Australia New Zealand Food Standards, Georgian Food Safety Rules, Turkish Food Codex and the Ministry of Agriculture, Fisheries and Food). However the average weekly intakes of Cd and Pb per body weight values (minimum-maximum) were 0.021 (0.0063-0.0399) and 0.019 (0.0007-0.0539)mg.week-1.70 kg body weight-1, respectively and not exceeded the Provisional Tolerable Weekly Intake (PTWI) established. Consumption of Saddle grunt from the Karachi coasts of Pakistan can therefore be said to constitute no health risks so far as the heavy metals investigated are concerned. However, due to the Cd and Pb muscle levels exceeded the maximum levels of fish permitted for human consumption, a plausible health risk could be posed by long-term exposed through Saddle grunt consumption. Keywords: Lead, Cadmium, Pomadasys maculatus, Karachi coast, Pakistan

oai:ojs.ejournal.undip.ac.id:article/70997 2026-02-11T19:42:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/70997 2026-02-11T19:42:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 4 (2025): Ilmu Kelautan; 533-543 Fristiohady, Adryan; Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Halu Oleo Nuraisya, Diasty; Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Halu Oleo Haruna, Lidya Agriningsih; Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Halu Oleo Parawansah, Parawansah; Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Halu Oleo Yodha, Agung W.M.; Department of Diploma III in Pharmacy, Polytechnic of Bina Husada Purnama, La Ode Muhammad Julian; Thammasat University Research Unit in Drug, Health Product Development and Application (DHP-DA), Department of Pharmaceutical Sciences, Faculty of Pharmacy, Thammasat University Sahidin, Sahidin; Department of Pharmaceutical Biology, Faculty of Pharmacy, Universitas Halu Oleo Asasutjarit, Rathapon; Thammasat University Research Unit in Drug, Health Product Development and Application (DHP-DA), Department of Pharmaceutical Sciences, Faculty of Pharmacy, Thammasat University Malaka, Muhammad Hajrul; Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Halu Oleo Thammasat University Research Unit in Drug, Health Product Development and Application (DHP-DA), Department of Pharmaceutical Sciences, Faculty of Pharmacy|Thammasat University|Thailand 2025-12-20 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/70997 Lobophytum sp. (LEA); Inflammation; cytokine; TNF-α; IL-1β. en Compounds derived from marine organisms have gained significant interest for their potential therapeutic effects on inflammatory diseases. Lobophytum sp., a soft coral species, has demonstrated anti-inflammatory properties by inhibiting the production of TNF-α and IL-1β, two crucial cytokines involved in the inflammatory process. This study assessed the anti-inflammatory potential of the ethyl acetate extract of Lobophytum sp. (LEA) using in vivo models. The extract was obtained through maceration using ethyl acetate.  Phytochemical screening identified various bioactive compounds, including flavonoids, alkaloids, and terpenoids, known for their ability to modulate various biological pathways. To evaluate the anti-inflammatory effects, LEA was tested in a mouse model of xylene-induced ear edema, a common assay for inflammation. Diclofenac sodium, a well-known anti-inflammatory drug, was used as a positive control. LEA was administered at a dose of 0.05, 0.1, and 0.2 mg.mL-1. The results revealed that LEA significantly reduced the swelling of the ear and suppressed the release of key pro-inflammatory cytokines, such as TNF-α and IL-1β. The expression levels of IL-1β and TNF-α were measured using the ELISA reader method. These findings suggest that the anti-inflammatory effects of LEA are likely mediated by the modulation of inflammatory signalling pathways, potentially involving the inhibition of cytokine production. The most effective dose in this study was 0.1 mg.mL-1. Overall, the results highlight the promising therapeutic potential of LEA as a natural anti-inflammatory agent. Further investigation is needed to explore the underlying mechanisms of action and evaluate its clinical applications for treating inflammatory diseases.

oai:ojs.ejournal.undip.ac.id:article/2257 2012-02-28T11:41:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2257 2012-02-28T11:41:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 1 (2006): Jurnal Ilmu Kelautan; 50-53 Insafitri, Insafitri; Jurusan Ilmu Kelautan, Universitas Trunojoyo, Bangkalan, Madura, Indonesia Nugraha, Wahyu Andy; Jurusan Ilmu Kelautan, Universitas Trunojoyo, Bangkalan, Madura, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2257 en Karang merupakan hewan benthos sesil, maka ekspresi hidupnya seperti laju pertumbuhan merupakan cerminan kondisi lingkungan dimana karang tersebut hidup. Untuk mengamati laju pertumbuhan karang digunakan metode yang berkenaan dengan tinjauan ke belakang (restropektif). Laju pertumbuhan masing-masing dari karang  Porites dari hasil penelitian memperlihatkan bahwa: di Pulau Cemara Kecil berkisar 5,38 – 17 mm/th. Pada kedalaman 3 m di Pulau Cemara Kecil bagian Barat adalah 14,88 mm/th dan 11,77 mm/th di Pulau Cemara Kecil bagian Timur. Pada kedalaman 10 m di Pulau Cemara Kecil laju pertumbuhan P. lutea adalah 12,38 mm/th di bagian barat dan 6,45 mm/th di bagian timur. Laju pertumbuhan pada kedalaman 3 m cenderung lebih tinggi daripada kedalaman 10 m. Laju pertumbuhan Pulau Cemara Kecil bagian barat mempunyai laju pertumbuhan yang cenderung lebih tinggi daripada bagian timur.   Kata kunci : Laju Pertumbuhan, Porites lutea, Pulau Cemara Kecil  Corals are sessile benthic animals, so their life expression, such on their growth rate was indicate of environmental condition where corals life. The study is a survey research, while coral growth rate was examined with restropective method, and descriptive analysis use table and graph. The growth rates each of Porites rom the result of observation in Cemara Kecil Island are beetwen 5,38-17 mm/year. At 3 metres depth west side of Cemara Kecil Island are 14,88 mm/year and 11,77 mm/year at east side of Cemara Kecil Island. At 10 metres depth in Cemara Kecil Island, growth rates of Porites lutea  are 12,38 mm/year at west side and 6,45 mm/year at east side. Growth rate at 3 metres depth is higher than 10 metres depth. The west side of Cemara Kecil Island have growth rate higher than east side.Key words : Growth rate, Porites lutea, Cemara Kecil Island

oai:ojs.ejournal.undip.ac.id:article/28222 2021-10-13T00:59:45Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/28222 2021-10-13T00:59:45Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 1 (2020): Ilmu Kelautan; 31-38 Indarjo, Agus; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Salim, Gazali; University of Borneo Tarakan Zein, Mufrida; Department of Accounting, Politeknik Negeri Tanah Laut Susiyanti, Susiyanti; University of Borneo Tarakan Soejarwo, Permana Ari; Indonesian Center for Social and Economic Research, Ministry of Maritime Affairs and Fisheries Nugraeni, Christine Dyta; University of Borneo Tarakan Bija, Stephanie; University of Borneo Tarakan Pham, Yen Thi Hong; National Kaohsiung University of Science and Technology 2020-03-08 09:15:10 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/28222 Allometric; Index condition; Model Von Bertalanffy; Mortality ; P.barbarus en The Mudskipper (P. barbarus) lives in intertidal mud flats and it becomes an indicator of water quality. The transformation of construction and water pollution in this area is important to investigate due to interaction of fishery industry, home residence, and market area surrounding areas. The aim of this research was to analyze the characteristic of Von Bertalanffy growth, allometric, condition index, and mortality of the P. barbarus in KKMB, Tarakan city. The research was designed by using descriptive quantitative method. The sampling process used purposive sampling. The sampling was conducted for 12 times plot.transect-1 in the extension area of KKMB, Tarakan city with a total area is 12 Ha, plot.transect-1area is 10x10 m2, and distance between each transect is 10 m2.  Sampling was carried out in survey area and laboratory to identify the gender and calculate total length and weight. The result showed the growth of male mudskipper (L∞ = 26.545 cm) and female (L∞ = 17.594 cm). Their size and the total population was decreased. The characteristic of male mudskipper growth was positive allometric, then female was negative allometric. The natural mortality and the catch of male mudskipper were higher than female.

oai:ojs.ejournal.undip.ac.id:article/6778 2019-08-26T01:59:38Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/6778 2019-08-26T01:59:38Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 1 (2013): Ilmu Kelautan; 14-19 Ismunarti, Dwi Haryo; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jl. Prof. Soedarto, S.H., Tembalang, Semarang, Indonesia, 50275 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/6778 en Fitoplankton mempunyai peranan sangat penting dalam kesuburan suatu perairan. Kondisi dan distribusi dari fitoplankton sangat dipengaruhi oleh berbagai parameter lingkungan. Analisis ordinasi dengan Analisi Komponen Utama telah dilakukan untuk mengkaji komunitas fitoplankton dan hubungannnya dengan beberapa parameter lingkungan di perairan Kepulauan Karimunjawa Jepara, Jawa Tengah. Pengamatan terhadap parameter pH, oksigen terlarut, fosfat, nitrat, suhu dan salinitas perairan, serta fitoplankton dilakukan di 16 stasiun. Hasil analisis menunjukkan KU I dicirikan oleh stasiun penelitian dengan kelimpahan kelas Baccilariaphyceae yang tinggi dan kelas Dinophyceae yang rendah. Sedangkan KU II dicirikan oleh stasiun penelitian dengan kelimpahan kelas Baccilariaphyceae yang rendah dan kelas Dinophyceae yang tinggi. Kelimpahan kelas Baccilariaphyceae berhubungan secara negatif dengan konsentrasi fosfat dan berkorelasi positif dengan konsentrasi nitrat. Faktor lingkungan yang lain tidak menunjukkan adanya hubungan  secara statistik. Kata kunci: analisis komponen utama, fitoplankton, faktor lingkungan Phytoplankton have a very important role in the waters fertility. Conditions and distribution of phytoplankton is strongly influenced by various environmental parameters. Analysis ordination with Principal Component Analysis has been carried out in studying phytoplankton community and its relationship with several environmental parameters in Karimunjawa waters Jepara Central Java. Observation of the parameters pH, dissolved oxygen, phosphate, nitrate, water temperature and salinity, and phytoplankton were done at 16 stations. The results of the study show that Principal Component I is characterized by the abundance of Baccilariaphyceae high and Dinophyceae low. While Principal Component II is characterized by the abundance of Baccilariaphyceae low and Dinophyceae high. There was negative correlation between phytoplankton abundance with phosphate concentration and positive correlation with nitrate concentration. Other environmental factors did not show any statistically significant correlation. Keywords: principal component analysis, phytoplankton, environmental factors

oai:ojs.ejournal.undip.ac.id:article/56233 2023-12-27T19:14:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/56233 2023-12-27T19:14:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 4 (2023): Ilmu Kelautan; 351-368 Misman, Nurul Nadiah; Department of Petroleum Geosciences, Universiti Teknologi Petronas Zakariah, Muhammad Noor Amin; Department of Petroleum Geosciences, Universiti Teknologi Petronas Wan Saelan, Wan Nurzalia; Universiti Malaysia Terengganu Shaari, Hasrizal; Universiti Malaysia Terengganu Mohd Noh, Khairul Arifin; Department of Petroleum Geosciences, Universiti Teknologi Petronas 2023-12-06 12:27:49 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/56233 modern coral; characterization; Malaysia; visual assessment; remote sensing; geochemical analysis en Coral reefs are highly diverse and productive ecosystem in the ocean that provides various goods services to human and environment. Located within the renowned ‘Coral Triangle’ region, Malaysia is one the thriving countries in Southeast Asia that possess rich marine resources and coral reefs. Like other coral reef around the world, coral reefs in Malaysia are exposed to multiple threat that jeopardize their well-being. Those relying on these ecosystems may face severe consequences if they are lost. In recent decades, research on characterizing modern coral reefs has increased in Malaysia, including identifying key species and their distribution, understanding the factors that control coral growth and assessing the impacts of environmental stressors on reef health. This study is aimed to provide an overview of the current state of knowledge of modern coral characterization studies conducted in Malaysia. It presents the distribution maps of these coral reef studies conducted throughout Malaysia and discusses the techniques employed to characterize them. Most of the studies was conducted in South China Sea, particularly in East Coast of Peninsular Malaysia with Tioman Island, Pahang being identified as having the greatest number of studies. And, visual assessment have the higher frequency of use in characterizing Malaysia coral reef. Going forward, future studies in Malaysia should continue to explore others Malaysia reef, and techniques for characterizing coral reefs, while also conduct more studies in locations with limited research. These studies could have served as foundation resource for future conservation efforts in the face of ongoing threat and challenges.

oai:ojs.ejournal.undip.ac.id:article/1418 2017-08-19T22:49:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1418 2017-08-19T22:49:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 2 (2010): Ilmu Kelautan; 59-65 Nurhayati, Tati; Departemen Teknologi Hasil Perairan, Fakultas Perikanan Ilmu Kelautan, Institut Pertanian Bogor, Jl. Lingkar Akademik Kampus IPB Darmaga Bogor 16680, Telp.(0251)8622915, Fax. (0251) 8622916, nurhayati7870@yahoo.com Fikri, Muhammad Desniar, Desniar 2012-02-01 05:44:55 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1418 id Beberapa komponen bioaktif dihasilkan oleh karang lunak, salah satunya inhibitor protease. Tujuan penelitian ini adalah mendapatkan karang lunak yang berpotensi sebagai penghambat aktivitas kerja enzim protease (inhibitor protease) pada beberapa bakteri patogen penghasil enzim protease serta mengetahui Minimum Inhibitory Concentration (MIC) dari ekstrak karang lunak tersebut.  Hasil penelitian menunjukkan bahwa pelarut metanol  lebih  potensial  untuk  mengekstrak  inhibitor  protease  dari  karang  lunak.  Karang  lunak  jenis Sarcophyton sp. dan Sinularia sp. mampu menghambat 100% aktivitas protease bakteri Staphylococus aureus dengan MIC 0,04% lebih kecil dari pada MIC EDTA (0,16%), sedangkan Xenia sp. menghambat protease bakteri S. aureus dengan MIC 0,08%. Karang lunak Nephthea sp. menghambat protease bakteri Pseudomonas aeruginosa dengan MIC 0,28%. Kata kunci : inhibitor protease, karang lunak, MIC Several bioactive compounds were produced by soft corals, including protease inhibitor.The aim of this study was to obtain softcorals which potency as inhibitor toward protease enzyme activity on pathogenic bacterial that produced protease enzyme and to study Minimum Inhibitory Concentration (MIC) from the softcorals. This research shown that ethanol is more potential for extracting protease inhibitor from softcorals. Sarcophyton sp. and Sinularia sp. are capable of inhibiting protease enzyme activity against Staphylococus aureus as 100% by MIC 0.04%, while that EDTA had MIC toward the protease as 0.16%.  Xenia sp. was capable of inhibiting protease from S. aureus by MIC 0.08%.  In the otherhand Nephtea sp. inhibited protease from Pseudomonas aeruginosa by MIC 0.28%. Key words: protease inhibitor, soft coral, MIC.

oai:ojs.ejournal.undip.ac.id:article/2281 2017-08-19T22:46:16Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2281 2017-08-19T22:46:16Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 4 (2011): Ilmu Kelautan; 181-186 Amri, Khairul; Department of Marine Science, Faculty of Marine Science and Fisheries, UNHAS Jl. Perintis Kemerdekaan KM. 10 Tamalanrea 90245. Telp: 0411-587000, Fax: 0411-586025, HP: 081342526342, E-mail: tsaustrina@gmail.com Setiadi, Dede; Department of Biology, Faculty of Mathematics and Natural Sciences, IPB Qayim, Ibnul; Department of Biology, Faculty of Mathematics and Natural Sciences, IPB Djokosetianto, D; Department of Aquaculture, Faculty of Fisheries and Marine Science, IPB Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2281 en Seiring dengan peningkatan jumlah penduduk di daerah pesisir, tekanan terhadap ekosistem pantai semakin meningkat pula.  Untuk mengetahui dampak dari aktifitas anthropogenik terhadap status hara (karbon, nitrogen dan fosfor) pada lamun telah dilaksanakan penelitian pada dua pulau di Kepulauan Spermonde yakni Pulau Barranglompo dan Bonebatang.  Kedua pulau ini mendapat tekanan anthropogenik berbeda. Sampel diambil dari daun lamun Enhalus acoroides pada tiga stasiun dengan jarak berbeda dari garis pantai pada masing-masing pulau.  Hasil pengukuran hara menunjukkan bahwa konsentrasi nitrogen di Pulau Barranglompo jauh lebih tinggi dibandingkan Pulau Bonebatang.  Nilai rasio C:N yang lebih rendah dan nilai rasio N:P yang lebih tinggi di Pulau Barranglompo memperkuat hal ini. Perbedaan ini mengindikasikan pengaruh dari pengayaan hara akibat aktifitas anthropogenik yang semakin meningkat. Hal ini didukung oleh nilai Total Padatan tersuspensi yang jauh lebih tinggi di Pulau Barranglompo dibandingkan Pulau Bonebatang. Aktifitas anthropogenik yang paling potensial mempengaruhi komposisi hara di Pulau Barranglompo adalah pembuangan sampah rumah tangga dan aliran limbah cair dari rumah penduduk di sekitar pantai. Kata kunci: lamun, hara, rasio C:N:P, aktifitas anthropogenik, Barranglompo, Bonebatang As human population increase in coastal areas, significant pressure to the coastal ecosystem increase as well.  In order to reveal possible impacts of anthropogenic activities to the nutrient status of seagrasses, a study has been done in two small islands within Spermonde Archipelago i.e. Barranglompo and Bonebatang Islands. Currently, these two islands are facing different anthropogenic pressure.  Samples of seagrass Enhalus acoroides were collected from three stations based on their different distances from the shoreline.  Results of the nutrient measurements showed that nitrogen concentrations in Barranglompo Island were significantly higher than those in Bonebatang Island.  This was supported by lower C:N ratios and higher N:P ratios in Barranglompo Island.  This difference indicated influence of nutrient enrichment due to increased anthropogenic activities.  Significantly higher Total Suspended Solid (TSS) values were also a strong evidence of this process.  Potential anthropogenic activities affecting nutrient composition in Barranglompo Island are domestic sewage disposal and drainage of liquid household sewage. Key words: seagrass, nutrient, C:N:P ratio, anthropogenic activities, Barranglompo,  Bonebatang

oai:ojs.ejournal.undip.ac.id:article/36401 2021-10-13T00:52:42Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/36401 2021-10-13T00:52:42Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 1 (2021): Ilmu Kelautan; 7-16 Opiyo, Kennedy; Curtin University Rawson, Christopher; Curtin University Gagnon, Marthe Monique; Curtin University Saputra, Ishaaq; Ministry of Marine Affairs and Fisheries 2021-03-07 21:44:29 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/36401 biomarkers; chlorpyrifos; oyster; S. mordax; pesticides en Chlorpyrifos is a xenobiotics contaminants that threats the marine environment and the living organism within the habitat. Although several marine bivalve species have been used as the indicator of marine pollution, the used of Saccostrea mordax is remaining unknown. This study aimed at investigating the suitability of lysosome membrane integrity, carboxylesterase activity, 8-oxo-2′-deoxyguanosine and condition index as biomarkers in adult S. mordax following their exposure to 0.0, 5.0 and 500 μg.L-1 of Chlorpyrifos for 21 days under laboratory conditions. Results indicated that the lysosome membrane integrity showed a dose-dependent response with a significant statistical number of destabilized cells between all the treatment groups. Carboxylesterase activity was significantly inhibited in 500 μg.L-1 chlorpyrifos treated group, while the environmentally relevant concentration (5 μg.L-1) did not induce a significant inhibition with reference to the control. Similarly, the condition index showed a dose-dependent response with the oysters exposed to 500 μg.L-1 chlorpyrifos exhibiting a significantly reduced growth rate. There was no statistical significance in the means of both 8-oxo-2′-deoxyguanosine in all treatment groups. The reaction of S. mordax to chlorpyrifos contamination demonstrates that the species can potentially be used as sentinel organisms in environmental monitoring programs. Lysosome membrane integrity was a single out as a sensitive biomarker for exposure to chlorpyrifos and is therefore suitable for environmental monitoring for sublethal concentrations of chlorpyrifos contaminations. Additionally, the use of multiple biomarkers was found to be robust in this study and can be extrapolated to other ecotoxicological studies

oai:ojs.ejournal.undip.ac.id:article/54721 2023-12-06T06:26:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/54721 2023-12-06T06:26:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 3 (2023): Ilmu Kelautan; 225-230 Duat, Kimnard Joseph Magsacay; Department of Chemistry, College of Science and Mathematics, Mindanao State University, Iligan Institute of Technology Gelani, Chona de Guzman; Department of Chemistry, College of Science and Mathematics, Mindanao State University, Iligan Institute of Technology 2023-09-11 00:57:07 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/54721 α-glucosidase inhibitor; ACE inhibitor; AChE inhibitor; Galaxaura oblongata en Seaweeds have gained interest from the pharmaceutical industry due to their diverse secondary metabolites with potential applications in the prevention and treatment of lifestyle diseases. In spite of the abundance of seaweeds in the coastal area of Iligan Bay in the Philippines, there has been limited investigation into their pharmacological properties. Therefore, this study aimed to evaluate the in vitro α-glucosidase inhibition, angiotensin-converting enzyme (ACE) inhibition, and acetylcholinesterase (AChE) inhibition properties of various fractions obtained from the marine red alga Galaxaura oblongata. The methanol extract of G. oblongata was sequentially partitioned into hexane, dichloromethane, ethyl acetate, butanol, and methanol fractions. All assays were performed in vitro and microplate based. The results of α-glucosidase inhibition activity assay showed that the n-hexane fraction and dichloromethane fraction exhibited greater than 50% inhibitory activity at 200 ppm. Furthermore, ACE inhibition activity assay revealed that dichloromethane fraction, ethyl acetate fraction, and butanol fraction displayed ACE inhibition activity above 50% at 250 ppm. In addition, the hexane fraction, dichloromethane fraction, and ethyl acetate fraction demonstrated potent AChE inhibitory activity at 250 ppm. Overall, the findings show that G. oblongata has antidiabetic, anti-hypertensive, and neuroprotective potentials. This is the first report of the in vitro α-Glucosidase, ACE, and AChE inhibition activities of G. oblongata. Further investigation and purification of the highly potent fractions in each assay is highly suggested to identify and characterize the compounds responsible for the observed bioactivities, which could serve as possible leads for drug discovery efforts in the management of various lifestyle diseases.

oai:ojs.ejournal.undip.ac.id:article/56603 2024-12-10T15:14:41Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/56603 2024-12-10T15:14:41Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 3 (2024): Ilmu Kelautan; 301-308 Khaleefa, Usama Qasim; College of Marine Sciences, Faculty of Marine Science, University of Basrah Hussein, Meelad A.; College of Marine Sciences, Faculty of Marine Science, University of Basrah Shareef, Najed Faisal; College of Marine Sciences, Faculty of Marine Science, University of Basrah Almayahi, Dawod S.; Marine Science Centre, Faculty of Marine Science, University of Basrah Chasib, Sajjad K.; Marine Science Centre, Faculty of Marine Science, University of Basrah 2024-09-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/56603 sedimentation; bathymetric survey; Garmat Ali waterway, sediments transported en The Abu Abdullah canal, an essential part of the Garma River, serves as the feeder to the water injection station for the Basrah Oil Company's southern region's oil fields, playing a significant strategic. This study thoroughly investigates the sedimentation rate and distribution processes within this critical canal. The canal was built in the 1980s, with a depth of 3 meters planned. In 2017, RSK Company, in partnership with the Basrah Oil Company, started a comprehensive bathymetric survey of the canal to investigate its depth characteristics. The survey yielded intriguing results, revealing notable variations in depth along the canal's course. Depths ranged from 0.4 m at the canal's edges to an average of 1.6 m in the middle, indicating a significant decrease of 1.4 m in the middle region and 2.6 m at the edges. The collapse of the canal banks, induced by the proximity of Buffalo breeders' residences near the canal, is the primary source of this depth variation. Incidental entry and traversal of Buffaloes lead to gradual structural degradation of the banks, exerting a substantial influence on sediment distribution within the canal. Moreover, Buffalo standing in the middle of the canal induces compression on the channel bottom, altering the sediment transport dynamics. The study's outcomes are critical for sustainable canal management and environmental conservation. Understanding the complicated interaction between human activities and natural processes for shaping canal morphology is vital for developing effective strategies aimed at safeguarding canal banks and preserving their ecological functions. This research significantly advances the understanding of canal sediment dynamics, presenting practical applications in hydraulic engineering and environmental management.

oai:ojs.ejournal.undip.ac.id:article/1673 2017-08-19T22:48:51Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1673 2017-08-19T22:48:51Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 3 (2010): Ilmu Kelautan; 126-134 Simbolon, Domu; Departemen PSP, FPIK-IPB Bogor, Jl. Agatis, Kampuas IPB Darmaga, Bogor. Hp. 085888656767, domu_psp@yahoo.com Simange, Silvanus Maxwel; Politeknik Perdamaian Halmahera, Tobelo-Halmahera Utara Wulandari, Sri Yulina; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Semarang 2012-02-08 06:55:15 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1673 id Aktivitas penambangan emas di sekitar Teluk Kao berdampak positif terhadap pendapatan daerah Kabupaten Halmahera Utara. Namun, penggunaan merkuri (Hg) dan sianida (CN) dalam proses ekstraksi emas dapat menimbulkan  pencemaran  perairan,  keracunan  dan  kematian  terhadap  sumberdaya  ikan.  Penelitian  ini bertujuan untuk mengetahui kandungan merkuri dan sianida pada tubuh ikan, dan menentukan tingkat kelayakan konsumsi ikan yang tertangkap dari Teluk Kao. Metode penelitian yang digunakan adalah survei. Data penelitian dikumpulkan dari bulan Maret-Juni 2010 di sekitar muara sungai tempat pembuangan limbah perusahaan penambangan emas Tanjung Taolas dan Akesone, di Teluk Kao. Sampel ikan yang diteliti adalah kakap merah, belanak, ikan biji nangka, dan udang. Analisis kandungan Hg dan CN pada tubuh ikan dilakukan di Laboratorium Produktivitas dan Lingkungan Perairan Institut Pertanian Bogor dengan menggunakan metode Atomic Absoption Spectrophotometry (AAS). Hasil penelitian menunjukkan kandungan Hg pada organ hati dari keempat jenis ikan sampel berkisar 0,13-0,51 ppm. Kandungan Hg pada organ hati lebih tinggi dibandingkan dengan organ daging yang berkisar 0,03-0,19 ppm. Kandungan Hg tertinggi pada hati ikan ditemukan pada ikan biji nangka (0,45-0,51). Kandungan CN pada organ hati lebih tinggi (6,0-18,0 ppm) dibanding dengan organ daging (4,2-8,5 ppm). Mengacu pada standar yang ditetapkan oleh WHO, maka ikan kakap merah dan belanak tidak layak dikonsumsi. Daging ikan biji nangka dan udang masih layak dikonsumsi maksimal 300 gram/hari. Kata kunci: merkuri, sianida, ikan konsumsi, Teluk Kao. Gold mining activities around the Kao Bay have a positive impact on regional income of North Halmahera. However, the use of mercury (Hg) and cyanide (CN) in the gold extraction process can cause water pollution, poisoning and death of fish resources. This study aims to determine the content of mercury and cyanide on the fish body, and determine the feasibility level of consumption of fish caught from the Kao Bay. This research used survey method. Data were collected from March-June 2010 near waste disposal around the estuary of the river of gold mining companies in Tanjung Taolas and Akesone, Kao Bay. Samples of fish were observed are red snapper, mullet, jack fruit fish, and shrimp. Analysis of the Hg and CN content in fish body was conducted in Productivity and Environmental Waters Laboratory, Bogor Agricultural University using Absoption Atomic Spectrophotometry (AAS) method. The content of Hg in four species of fish liver samples ranged from 0.13 to 0.51 ppm. The content of Hg in liver was higher than with the organ meats that range from 0.03 to 0.19 ppm.  The highest Hg content in fish liver found in jackfruit fish (0.45 to 0.51). CN content of the liver was higher (6.0 to 18.0 ppm) compared with muscle (4.2 to 8.5 ppm). Referring to the standards by WHO, the red snapper and mullet inedible (can not eat for consumption). Jackfruit fish and shrimp still worth consumed for a maximum of 300 grams / day. Key words: mercury, cyanide, fish consumption, Kao Bay.

oai:ojs.ejournal.undip.ac.id:article/18672 2021-10-13T03:57:49Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/18672 2021-10-13T03:57:49Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 2 (2018): Ilmu Kelautan; 99-108 Kerry, Rout George; Post Graduate Department of Biotechnology, Utkal University Padhiary, Samprit; Department of Biotechnology, Academy of Management and Information Technology Mahapatra, Gyana Prakash; Centre of Advanced Study in Marine Biology, Annamalai University Rout, Jyoti Ranjan; School of Biological Sciences, Asian Institute of Public Health 2018-06-21 21:26:43 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/18672 No en Coral reefs are a sundry subaqueous ecological community, combined with the calcium carbonate structures secreted by converting the carbon dioxide present in the water into limestone. The biotic portion of the coral reef is marine animal known as polyps that have resemblance with jellyfish. Unlike terrestrial environment, the marine component is tightly interdependent. Taking out one component or loss of from a system can have a devastating impact or undermine the entire marine ecosystem. Reefs specifically are a vital organism among underwater life which is dependent on corals and provide key microhabitat, shelter and breeding ground for thousands of species of fish, crustaceans, mollusks, etc. Coral reef possesses vital ethnobotanical properties, which cures asthma, arthritis, and even cancer. Apart from medicinal properties, further it provides 2/3rd of oxygen on earth. However, the destructive fishing practices, pollution and ocean acidification have endangered this kingdom and have led to the threatening of the entire fabric of the underwater life. As human beings are also dependent up to much extent for centuries, there is a high probability of being severely affected if the coral reef extinct leaving the seabed barren. Corals cover almost 1 % of the oceans present on earth, but the irony is 75 % of them are on a verge of extinction. Therefore, the present review focuses on its conservation, cultivation and significance of their application in the field of biomedical science.Keywords: Coral reef, endangered, ethnobotany, extinction, marine ecosystem, pollution.

oai:ojs.ejournal.undip.ac.id:article/2329 2012-03-03T01:51:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2329 2012-03-03T01:51:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 4 (2007): Jurnal Ilmu Kelautan; 199-204 Anggoro, Sutrisno; Fakultas Perikanan dan Kelautan UNDIP JI. Imam Barjo No. 3 Semarang, Telp (Fax): (024) 8452560, HP: 0811270953, e-mail: msdundip@yahoo.com Muryati, Muryati; BBTPPI Semarang, Jl. Ki Mangun Sarkoro No. 6 Semarang,Telp/Fax: (024) 8316315, HP: 08122871816 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2329 en Suatu percobaan telah dilakukan untuk mengetahui pengaruh berbagai medium isosmotik terhadap aktivitas enzim Ca-chorionase, efisiensi energetik dan keefektipan penetasan telur udang jane (Metapenaeus elegans). Percobaan dirancang dengan pola acak lengkap mengaplikasikan 4 perlakuan dan 3 ulangan. Perlakuan yang dicobakan terdiri dari 4 (empat) tingkat medium isosmotik (salinitas media inkubasi). yaitu: 16 ppt (isosmotik postmolt), 22 ppt (isosmotik intermolt), 28 ppt (isosmotik molt), dan 34 ppt (isosmotik premolt). Respon Ca-corionase, efisiensi energetik dan keefektipan tetas dianalisis dengan uji kontras polinom ortogonal. Hasil percobaan menunjukkan bahwa salinitas media inkubasi berpengaruh sangat nyata terhadap aktivitas enzim Ca-chorionase, efisiensi energetik dan keefektipan penetasan telur udang jahe. Responnya berpola kuadratik dengan tingkat optimum berada pada 25-26 ppt (mendekati rentang isosmotik Intermolt-Molt). Media tersebut mampu menghasilkan efisiensi terbaik bagi aktifitas enzim Ca-chorinase serta energetika dan keefektipan penetasan telur udang jahe.Kata kunci: media isosmotik, Ca-chorinase, energetik, keefektipan penetasan, telur udang jahe. A series of experiments was conducted to investigate the respons of Ca-chorionase enzyme activity, energetic efficiency and hatching effectiveness of Ginger Shrimp Eggs incubated under different isosmotic-salinities medium (16, 22, 28 and 34 ppt equal to 466.91, 642.00, 817.10 and 992.19 mOsm/L H20: isosmotic level of postmolt, intermolt and premolt). The research were used completely randomized design with 4 isosmotic-salinities medium treatments and 3 replications. Respons of Ca-chorionase, energetic efficiency and hatching effectiveness were analyzed with polynom orthogonal contrast test. Isosmotic medium highly affected the Ca-chorionase enzyme activity, energetic efficiency and hatching effectiveness of Ginger Shrimp eggs. The respons sowed a quadratic pattern, and the optimum interval salinity were 25-26 ppt (isosmotic range of intermolt and molt). This medium resulted not only more efficient Ca-chorionase enzyme activity but also more energetic and hatching effectiveness of Ginger Shrimp Eggs. Key words : isosmotic medium, Ca-chorionase, energetic, hatching, Ginger Shrimp Eggs

oai:ojs.ejournal.undip.ac.id:article/41215 2022-02-13T04:23:18Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/41215 2022-02-13T04:23:18Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 4 (2021): Ilmu Kelautan; 254-264 https://ejournal.undip.ac.id/index.php/ijms/article/download/41215/126978 Azhar, Nuril; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Yudiati, Ervia; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Subagiyo, Subagiyo; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Alghazeer, Rabia; Department of Chemistry, Faculty of Sciences, University of Tripoli 2021-12-06 01:29:31 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/41215 Alginate; Actinobacteria; Co-culture; Vibrio spp. en Vibrio vulnificus, Vibrio parahaemolyticus and Vibrio harveyi have been found in aquatic environments and suspected as the primary trigger of WFD (White Feces Disease) outbreaks in aquaculture. This Vibrio spp. has an antibiotic resistance to Ampicillin, Co-Amoxiclav, Amoxicillin, Azithromycin, Actinobacteria and Ciprofloxacin HCL. Actinobacteria and alginate have been reported to increase the marine biota resistance against diseases through prebiotic and probiotic mechanisms. This study aims to discover and increase the secondary metabolite production of Actinobacteria-Alginate and its ability as anti-vibrio. Alginate extraction in the samples dated September 2020 originally from Teluk Awur Bays, Jepara, Central Java, Indonesia (33.73±1.84%) was considerably higher than in May 2021 (22.67±0.3%). Samples were taken from sediment and mangrove root. Actinobacteria strains are macroscopically and microscopically similar to the genus Streptomyces. The most well-known antibiotics were produced by Streptomyces spp. The anti-vibrio test was carried out by Kirby-Bauer disc diffusion. The results were observed by measuring the inhibition zone surrounding the paper disc using a digital calliper. Co-culture strain 90 together with alginate have an approved antibacterial activity against all Vibrio spp. in the concentration of 10.disc-1 mg and 5 mg.disc-1. Co-culture Actinobacteria with alginate has remarkably changed the green-yellow color to olive green/dark red-orange (strains 3, 62, 63, 72, and 90), indicating the transformation of the formation alginate with pigments into other compounds through the biosynthetic pathway. Therefore, alginate enables to support of Actinobacteria by induction the active secondary metabolite as an anti-vibrio to counteract the bacterial pathogen diseases.

oai:ojs.ejournal.undip.ac.id:article/291 2010-11-03T06:07:09Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/291 2010-11-03T06:07:09Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 2 (2009): Jurnal Ilmu Kelautan; 112-116 Rejeki, Sri 2010-10-23 10:15:17 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/291 id Salah satu masalah dalam kegiatan budidaya karamba jaring apung di laut adalah adanya organisme penempel atau biofouling yang mengakibatkan terganggunya sirkulasi air yang mengalir ke dalam kantong jaring, sehingga pasok oksigen bagi organisme budidaya menurun. Tujuan dari penelitian ini adalah untuk mengkaji suksesi penempelan biofouling pada jaring karamba apung di laut. Penelitian ini dilakukan dengan metode survey. Jaring uji (mata jaring 1 inci) direntangkan pada bingkai berbentuk empat persegi panjang berukuran 30 x 50 cm. Pengumpulan data secara observasi dilakukan seminggu sekali. Hasil penelitian menunjukkan bahwa penempelan biofouling diawali oleh jenis makroalga dari minggu pertama sampai dengan kedelapan, kemudian moluska dan sponges pada minggu ketujuh dan kedelapan.Secara keseluruhan yang ditemukan pada jaring uji selama penelitian terdiri atas 5 jenis makroalga (Demesteria sp, Enteromorpha clatharata, Ectocarpus sp, Enteromorpha sp,Pterosiphonia sp), 1 jenis moluska (Saccostrea sp) dan 1 jenis sponges (Myxilla sp).   Kata kunci: Suksesi, biofouling, Jaring Karamba Apung   One of the problem faced by floating marine net cage culture is the attachment of biofouling, which influences water sirculation as well as oxygen supply in the cage. This research was done to find out the succession of biofouling on a marine net cage. A survey method was used in this research. A tested net matterial (mesh size of 1 inch) were stretched at a rectangular frames of 30 x 50 cm. The data were collected weekly. The results showed that Microalgae was found at the first week and continued until week 8th followed by mollusc and sponge at 7th and8th week. There were 5 macroalge (Demesteria sp, Enteromorpha clatharata, Ectocarpus sp,Enteromorpha sp, Pterosiphonia sp), 1 mollusc (Saccostrea sp) and 1 sponge (Myxilla sp) found atached on the cage.   Key words : Succession, Bio fouling, Floating Net Cage.

oai:ojs.ejournal.undip.ac.id:article/8522 2020-04-17T06:01:06Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8522 2020-04-17T06:01:06Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 3 (2014): Ilmu Kelautan; 171-180 Munasik, Munasik; 1Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jl. Prof. Soedarto, SH. Tembalang, Semarang, Indonesia 50275 Suharsono, Suharsono; Pusat Penelitian Oseanografi, Lembaga Ilmu Pengetahuan Indonesia Jl. Pasir Putih I/1 Ancol Timur, Jakarta, Indonesia 14430 Situmorang, J; Fakultas Biologi, Universitas Gadjah Mada, Jl. Teknika Selatan, Sekip Utara, Yogyakarta, Indonesia 55281 N, Kamiso H; Jurusan Perikanan, Fakultas Pertanian, Universitas Gadjah Mada, Jl. Flora, Bulaksumur, Yogyakarta, Indonesia 55281 2014-09-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8522 en Studi rekrutmen karang Pocillopora damicornis telah dilakukan dengan mengamati kerapatan juvenil pada substrat penempelan di dataran terumbu Pulau Panjang, Jepara, Jawa Tengah. Hasil menunjukkan bahwa rekrutmen terjadi sepanjang tahun dan tertinggi pada periode Agustus-Oktober. Laju rekrutmen karang di belakang terumbu (back reef) pada sisi bawah angin (selatan) lebih tinggi daripada di sisi atas angin (utara) Pulau Panjang, tampaknya hal ini berkorelasi dengan kerapatan populasi karang dewasanya. Kerapatan juvenil karang tertinggi pada substrat batu alam terjadi pada sisi bawah permukaan substrat, akan tetapi pertumbuhan juvenil karang tertinggi ditemukan di sisi atas permukaan substrat. Hal ini mengindikasikan bahwa kerapatan juvenil karang berhubungan dengan kelulusan hidup juvenil karang. Semakin tinggi kerapatan juvenil karang P. damicornis maka semakin rendah kelulusan hidup juvenil karang karena terjadinya peningkatan persaingan sesama juvenil karang dan akibat kekurangan cahaya. Kata kunci: rekrutmen, kerapatan, kelulushidupan, karang Pocillopora damicornis Recruitment of the brooding coral Pocillopora damicornis was studied by observing the juvenile density on the settlement plate substrate in reef flat of Panjang Island, Jepara, Central Java. The results show that recruitment occurs throughout the year and the highest in the period from August to October. The rate of recruitment of coral reefs in back reef on the leeward (south) is higher than on the windward (north) of the island, it seems to be correlated with population density of adult corals. The highest density of juvenile corals on natural substrata occurs on the lower side surface of the substrate, but the highest growth of juvenile are found on the upper side surface of the substrate. This indicates that the density of juvenile corals associated with the survival of juvenile corals. The higher density of juvenile corals P. damicornis, the lower the survival of juvenile corals due to an increase in competition among juvenile corals and due to lack of light. Keywords: recruitment, density, survivorship, coral Pocillopora damicornis

oai:ojs.ejournal.undip.ac.id:article/64322 2025-06-15T08:04:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/64322 2025-06-15T08:04:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 1 (2025): Ilmu Kelautan; 71-82 Wijayanti, Diah Permata; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Indrayanti, Elis; Department of Oceanography, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Haryanti, Dwi; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Azizah, Mila Amelia Nur; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Bhagooli, Ranjeet; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Department Biosciences and Ocean Studies, Faculty of Science, University of Mauritius 2025-03-08 15:59:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/64322 Cladocopium; Durusdinium; Indonesian waters; Scleractinian; Symbiodiniaceae en Several effects of global warming, particularly coral bleaching, have threatened the symbiotic system of coral reefs. Coral reefs perform a reciprocal system that coincides with coral and their algal symbiont, the environment, and human activities. Nowadays, the system has been threatened by local and global stressors, including global warming.  Understanding the ecological resilience of coral reefs to temperature stress relied heavily on the functional variations between algae symbionts as well as their genotypes. Indonesian coral reefs which play a critical value in supporting the reef fisheries, have been reported to experience bleaching events. However, a few reports were on the symbiont type of Indonesian corals.  This study investigates the Symbiodiniaceae communities of coral hosts of Panjang Island and Karimunjawa Archipelago in Java Sea, and Tulamben Waters, Bali using internal transcribed spacer two (ITS2) amplicon sequencing. In total, 63 sequences out of 119 coral colonies from 16 genera were obtained from Panjang Island, Karimunjawa Archipelago, and Tulamben waters, Bali. All sequences showed approximately 600 bp in the length of the amplified ITS-rDNA region. The BLAST homology analysis of ITS-rDNA region sequences showed that samples matched Cladocopium sp. and Durusdinium sp. with similarities ranging between 96.79-100%. Cladocopium dominated the symbiont type of the Acropora, and Porites, While Durusdinium is the dominant symbiont in the Pavona, Both algal can be found in Pocillopora sp, Montipora sp, Goniastrea sp., and Lobophyllia sp. The occurrence of the two symbiont types suggests that coral species may adopt heat-tolerant Symbiodiniaceae to adapt to the high environmental temperatures. 

oai:ojs.ejournal.undip.ac.id:article/1957 2017-08-19T22:46:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1957 2017-08-19T22:46:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 3 (2011): Ilmu Kelautan; 143-150 Arisandi, Apri; Jurusan IKL FP Universitas Trunojoyo JL. Raya Telang PO.BOX 2 Kamal-Bangkalan 69162 Hp 08125261907 E-mail: apri_unijoyo@yahoo.com Marsoedi, Marsoedi; Jurusan MSP, FPIK Universitas Brawijaya Nursyam, Happy; Jurusan MSP, FPIK Universitas Brawijaya Sartimbul, Aida; Jurusan PSPK, FPIK Universitas Brawijaya JL. Veteran, Malang 65145 2012-02-17 07:04:28 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1957 id Curah  hujan  mempengaruhi  salinitas  air  laut,  yang  pada  gilirannya  dapat  menyebabkan  rendahnya pertumbuhan Kappaphycus alvarezii.  Penelitian ini bertujuan untuk mengetahui perubahan morfologi, ukuran dan jumlah sel, pertumbuhan serta rendemen karaginan K. alvarezii pada salinitas yang berbeda.  Penelitian dilakukan  menggunakan  metode  kultur  jaringan,  selanjutnya  thallus  yang  telah  tumbuh  diekstraksi karaginannya. Hasil penelitian menunjukkan bahwa salinitas yang berbeda berpengaruh nyata terhadap jumlah sel K. alvarezii (p<0,05), tetapi tidak terhadap rata-rata pertumbuhan harian (p>0,05). Rendemen karaginan pada semua perlakuan salinitas relatif tinggi dan sesuai dengan persyaratan untuk ekspor. Kata kunci:  salinitas, sel, pertumbuhan, karaginan, K. alvarezii Rainfall affects the salinity of sea water, which in turn can lead to the low growth of Kappaphycus alvarezii. This research aimed to determine changes in the morphology, size and number of cells, growth and carrageenan yield of K. alvarezii at different salinitity levels. The research was conducted using tissue culture method, furthermore, from the grown thallus then the carageenan was extracted. The results showed that different of salinity levels significantly influenced the number of cells K. alvarezii (p<0.05), but not against the average daily gain (p>0.05). The carrageenan yields at all salinity treatment were relatively high and eligible for export.  Key words: salinity, cell, growth, carrageenan, K. alvarezii

oai:ojs.ejournal.undip.ac.id:article/12051 2021-10-13T03:56:24Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/12051 2021-10-13T03:56:24Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 3 (2018): Ilmu Kelautan; 113-118 Sugianti, Yayuk; Research Institute for Fisheries Enhancement and Conservation Muntalif, Barti Setiani; Master Programme of Environmental Engineering, Institut Teknologi Bandung Sudjono, Priana; Master Programme of Environmental Engineering, Institut Teknologi Bandung 2018-09-06 19:01:20 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/12051 Periphyton; Panjang islands; Seagrass; Water Quality en Increases in coastal pollutants, largely due to human activity on land, have an impact on seagrass ecosystems. The high sedimentation in the waters causes an increase in the concentration of sludge, organic matter, nutrients, and turbidity which reduce the depth that can be reached by sunlight. The condition affects seagrass ecosystems adversely. Changes in water condition can be illustrated by the presence of water organisms. One dominant organism in seagrass ecosystems is periphyton. The existence of periphyton in the waters is determined by physical and chemical conditions of the waters because it has specific limit of tolerance, which causes different community structure. To analyze periphyton response to the changes of environmental quality in seagrass ecosystems, Shannon Winner diversity and Saprobic Indices were measured at Panjang Island, Banten. The results of water quality assessment indicates the status of aquatic seagrass of the island considered as polluted to heavy polluted. It is observed from some physico-chemical parameters that exceeded the standard quality for the life of seagrass ecosystems and marine life. Based on the classification and saprobic coefficient using periphyton biological parameters, the condition of seagrass land ecosystem in the island is classified into β Mesosaprobic to β/α Mesosaprobic phase, which indicates light to medium pollution with pollutants including organic and inorganic materials. Several types of dominant periphyton were discovered during the observations, including Meridion sp, Navicula sp, Nitzschia sp and Synedra sp. This periphyton species belong to Bacillariophyceae class (Family Chrysophyta) that is commonly used to assess the condition of eutrophication and organic pollution on waters.

oai:ojs.ejournal.undip.ac.id:article/2367 2012-03-04T14:48:48Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2367 2012-03-04T14:48:48Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 2 (2004): Jurnal Ilmu Kelautan; 115-119 Gernowo, Rachmat; Jurusan Fisika, Fakultas MIPA, Universitas Diponegoro Semarang Sugianto, Denny N; Program Studi Oseanografi, Jurusan Ilmu Kelautan, FPIK, UNDIP Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2367 en Telah dilakukan studi model prediksi iklim maritim tropis berdasarkan data curah hujan (khususnya Pantai Pulau Jawa) dengan model sistem Inferensi Fuzzy jaringan saraf adaptif ( ANFIS), untuk pengolahan data curah hujan dalam kurun waktu 10 tahun (tahun 1988 – 1998) sebagai data historis pada proses pembelajaran. Perangkat lunak yang dimanfaatkan antara lain ANFIS dari sistem fuzzy. Hasil yang diperoleh, dengan sistem fuzzy menunjukan jangkauan estimasi untuk seluruh daerah penelitian diperoleh sebesar 89,51 % untuk pengolahan dengan anfis. Variabilitas curah hujan, khususnya daerah pengamatan pantai pulau Jawa menunjukan pola curah hujan monsunal yaitu curah hujan tertinggi ada pada awal dan akhir pentad dan mulai menurunhingga pertengahan pentad.Kata kunci : Prediksi, Iklim maritim tropis, ANFISStudy of tropical maritim climate base rainfall-data prediction modeling has been done by using ANFIS model. As history data (Coastal of Java Island in particular) in learning process was taken from 10 years period (from 1988 to 1998). The ANFIS software was applied in the analysis. The ANFIS processing result show of estimation, with average estimation of the all experiment zone are 89,51 % by ANFIS processing. Rainfall variability of the ANFIS modeling processing with the special in Coastal of Java Island shows the monsoon rainfall pattern that reach top level at the first and final pentad and decrease until the middle pentad.Key words : Prediction, Tropical maritim climate, ANFIS.

oai:ojs.ejournal.undip.ac.id:article/46137 2022-12-05T16:33:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/46137 2022-12-05T16:33:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 3 (2022): Ilmu Kelautan; 233-239 Adibrata, Sudirman; Department of Aquatic Resources Management, Faculty of Agriculture, Fisheries and Biology, Universitas Bangka Belitung Syaputra, Denny; Department of Aquaculture, Faculty of Agriculture, Fisheries and Biology, Universitas Bangka Belitung Perangin-angin, Robet; Department of Fishing Techniques, Karawang Marine and Fisheries Polytechnic Wulansari, Devi; 4Department of Fishery Product Processing Techniques, Karawang Marine and Fisheries Polytechnic Van, Kim V; Fisheries Faculty, Vietnam National University of Agriculture 2022-09-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/46137 Aquaculture; Artisanal fisheries; Bangka Belitung; Sustainability fisheries en Bycatch has the added value of being processed into meals for animal feed or fish farming needs. Therefore, this study aims to determine the nutritional content of local fish meals from the bycatch in Batu Beriga Village, Bangka Belitung. The method used for processing fish meal was a wet mill from bycatch. Quality parameters referred to the Indonesian National Standard (SNI) 01-2715-1996/Rev.92 regarding fish meal as raw material for feed. The results showed that 4 kg of wet fish could produce a meal of 0.4 kg. The nutritional content of the local fish meal is of high quality as it met the requirements of SNI Quality I, II, and III, allowing it to be released to the market. The laboratory tests showed water, ash, crude protein, crude fat, crude fiber, calcium, phosphorus, NaCl, Gross energy, Carbohydrate, and pH content of 5.06% (SNI Quality I maximum 10%), 18.51% (SNI Quality I maximum 20%), 68.13% (SNI Quality I minimum 1.5%), 5.71% (SNI Quality I maximum 20%), 1.54% (SNI Quality I maximum 8%), 4.09% (SNI Quality I range 2.5-5.0%), 6.82% (SNI Quality I range 1.6-3.2%), 1.78% (SNI Quality I maximum 2%), 4,609.67 Kcal/kg, 0.0%, and 6, respectively. Furthermore, amino acids from a local fish meal could be used as feed mixtures for aquaculture. Bycatch can be used to fish meals as a potential side business for fishers. In sustainable fisheries development, independence in animal feed should be established immediately, hence the dependence on other regions can be minimized.

oai:ojs.ejournal.undip.ac.id:article/552 2020-10-25T22:39:43Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/552 2020-10-25T22:39:43Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 3 (2008): Jurnal Ilmu Kelautan; 127-132 Kunarso, Kunarso Supangat, Agus Wiweka, Wiweka 2010-11-12 11:30:29 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/552 id Ikan tuna merupakan penyumbang devisa negara dari sektor perikanan laut. Pengusahaan tuna untuk mencukupi kebutuhan ekspor dan pasar loka lperlu terus ditingkatkan selama masih memungkinkan. Salah satu kendala dalam berburu tuna adalah lemahnya informasi fishing ground baik secara spasial maupun temporal. Kondisi iklim global yang berubah-ubah tidak menentu semakin menyulitkan dalam menentukan fishing ground tuna, sehingga perburuan tuna menjadi kurang efektif, boros waktu dan bahan bakar. Tujuan penelitian ini adalah menguji dan mengkaji efektifitas aplikasi teknologi peramalan fishing ground tuna di lokasi upwelling dengan bantuan citra satelit harian. Metodolog iyang digunakan dalam penelitian ini adalah survey lapangan dengan metode riset eksperimental semu. Data dasar peramalan menggunakan citra satelit harian MODIS and NOAA. Peramalan fishing ground tuna dengan data citra satelit harian bisa diaplikasikan dengan delay waktu tercepat relatif sekitar 19 jam dari saat perekaman. Aplikasi hasil peramalan fishing ground tuna mempunyai keunggulan berupa efektifitas keberhasilan berkisar 80 % dan perlu pemahaman waktu delay time antara blooming khlorofil-a hingga adanya tuna dan residence time tuna di lokasi upweiiing. Residence time tuna dilokasi upweiiing diduga sekitar 1-2 minggu.Kata kunci: Peramalan, fishing ground, tuna, upwelling, satelit harianTuna fisheries give high contribution to national income. Tuna fishing effort for supply export and local market necessary to be developed as long as possible. The aim of this research is to test and study effectiveness of tuna fishing ground forecasting technology application in the upwelling location by daily satellite images. Method of this research is quasi experimental research. Daily satellite images of MODIS and NOAA as primary data is used for forecasting. Tuna fishing ground forecasting using daily satellite images data is able to be applied by delay time 19 hours from satellite record time. Application of tuna fishing ground forecasting have 80 % effectiveness and need to understand delay time of blooming of chlorophyll-a till tuna arrival and tuna residence time in theupwelling location. Tuna residence time in the upwelling location is predicted about 1-2 weeks.Key words: forecasting, fishing ground, tuna, upwelling, daily satellite

oai:ojs.ejournal.undip.ac.id:article/8800 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8800 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 3 (2015): Ilmu Kelautan; 170-186 Zahid, Ahmad; Masyarakat Iktiologi Indonesia, Gd. Widyasatwaloka, Bidang Zoologi, Pusat Penelitian Biologi LIPI Jln. Raya Jakarta-Bogor Km. 48 Cibinong 16911 Indonesia Rahardjo, M.F.; Departemen Manajemen Sumber Daya Perairan, FPIK IPB Jln. Agatis, Kampus IPB Dramaga Bogor 16680 Indonesia Syafei, Lenny S; Sekolah Tinggi Perikanan, Jakarta Jln. Raya Pasar Minggu, Jakarta Selatan 12520 Indonesia Susilowati, Rini; Balai Besar Penelitian dan Pengembangan Pengolahan Produk dan Bioteknologi, Badan Penelitian dan Pengembangan Kelautan Perikanan Jln. Petamburan VI, Slipi Jakarta Pusat 10260 Indonesia 2015-09-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8800 en Pengetahuan mengenai ekologi trofik merupakan dasar dalam memahami ekosistem secara keseluruhan yang dapat dijelaskan melalui pola hubungan trofik interspesies ataupun interserikat. Penelitian bertujuan untuk menjelaskan ekologi trofik meliputi indeks trofik dan jenis makanan dominan, serikat dan tingkat trofik, dan variasi spasial dan temporal komunitas ikan di estuari Segara Menyan. Pengambilan ikan contoh dilakukan setiap bulan pada zona berbeda. Ikan contoh dipisahkan berdasarkan waktu dan lokasi pengamatan, dianalisis isi saluran pencernaannya. Analisa data meliputi indeks vakuitas, jumlah total organisme makanan, jenis makanan dominan, luas relung makanan, dan tingkat trofik.  Pada pengamatan 106 spesies ikan, sebanyak 1-380 saluran pencernaan ikan diamati. Sebanyak lima dari 106 spesies memiliki nilai indeks vakuitas “0” dan jumlah makanan yang dikonsumsi bervariasi mulai dari empat hingga 27 jenis makanan. Secara umum, luas relung ikan adalah rendah berkisar 0,20-0,78 dan kebanyakan berada pada kisaran 0,20-0,48. Zooplankton merupakan jenis makanan paling dominan dikonsumsi oleh ikan. Komunitas ikan dikelompokkan dalam tujuh serikat trofik, yaitu detritivora, fitoplanktivora, zooplanktivora, zoobentivora, moluskivora, krustasivora, dan pisivora. Tingkat trofik komunitas ikan berkisar 2,05-4,73. Faktor perubahan ontogenetik, persediaan makanan, karakteristik habitat, dan ruaya beberapa spesies ikan memengaruhi variasi spasio-temporal jejaring makanan di Segara Menyan. Kata kunci: interaksi trofik, laguna, ikan, variasi spasio-temporal, serikat trofik Knowledge of trophic ecology is one way to understanding the whole ecosystem which explained by trophic relationship pattern (interspecies or interguild). The objective research was described of the trophic ecology, i.e. trophic index and dominant prey, trophic guild and trophic level, and spatio-temporal variation of fish community in Segara Menyan coastal lagoon. Fish were collected monthly for one year at three zones. Fish samples were placed in separate labelled plastic bags according to the time scale and location sampling, then gut contents were analyzed. The data of vacuity index, number of prey, prey dominant, diet breadth, and trophic level were analyzed. For each of 106 fish species, between 1 and 380 stomachs, were examined. The vacuity index was also different among species. Five of 106 species had a vacuity index of “0” and total number of food items consumed varied between fish species, ranging from three items to 27 items. The overall diet breadth (Bi) was relatively low among species, ranging from 0.20 to 0.78, with most of them between 0.20 and 0.48. Calanoid copepods comprised the most common food item consumed by all the fishes examined. Fishes occurring can be broadly categorized into seven different trophic guilds. The trophic level of fish communities ranged from 2.05 to 4.73. Spatio-temporal variation of food web was influenced of ontogenetic shift, food availability, habitat characteristic, and migration of some species in Segara Menyan coastal lagoon. Keywords: trophic interaction, lagoon, fishes, spatio-temporal variation, trophic guild

oai:ojs.ejournal.undip.ac.id:article/70739 2025-12-21T07:49:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/70739 2025-12-21T07:49:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 3 (2025): Ilmu Kelautan; 425-437 https://ejournal.undip.ac.id/index.php/ijms/article/download/70739/232420 https://ejournal.undip.ac.id/index.php/ijms/article/download/70739/232421 Latifah, Laila; Department of Oceanography, Faculty of Fisheries and Marine Science, Universitas Diponegoro Pranowo, Widodo Setiyo; Research Center for Climate and Atmosphere, National Research and Innovation Agency Department of Oceanography, Indonesia Naval Postgraduate Military Service School Mujiasih, Subekti; Research Center for Climate and Atmosphere, National Research and Innovation Agency Ratnawati, Herlina Ika; Research Center for Climate and Atmosphere, National Research and Innovation Agency Hatmaja, Rahaden Bagas; Research Center for Climate and Atmosphere, National Research and Innovation Agency Suhana, Mario Putra; Department of Marine Science, Faculty of Marine Science and Fisheries, University of Maritime Raja Ali Haji Setiyadi, Johar; Department of Oceanography, Indonesia Naval Postgraduate Military Service School Lelalette, Johanis Dominggus; Research Center for Climate and Atmosphere, National Research and Innovation Agency Izzaturrahim, Muh. Hafizh; Research Organization of Electronic and Informatics, National Research and Innovation Agency Ismail, M. Furqon Azis; Research Center for Climate and Atmosphere, National Research and Innovation Agency Syah, Achmad Fachruddin; Faculty of Fisheries and Marien Science, University of Trunojoyo Ryanto, Fauzan Novan; Research Center for Climate and Atmosphere, National Research and Innovation Agency Setiyono, Heryoso; Department of Oceanography, Faculty of Fisheries and Marine Science, Universitas Diponegoro Helmi, Muhammad; Department of Oceanography, Faculty of Fisheries and Marine Science, Universitas Diponegoro 2025-09-10 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/70739 tidal flooding; Riau islands coastal waters; wind speed; significant wave height; ocean currents en The Indonesian Maritime Continent is highly vulnerable to climate variability and change, as exemplified by tidal flooding events in the Riau Islands from 2022 to 2024. This study aimed to analyze the characteristics of sea level dynamics and anomalies associated with tidal flooding (rob) and identify the contributing factors. Data on tidal flooding events were gathered from press and online social media reports, while additional information on significant wave height, ocean currents, and wind was obtained from the CMEMS (Copernicus Marine Environment Monitoring Service) Marine Copernicus archives (marine.copernicus.eu). Observational data from tide gauge stations were also accessed via the IOC sea level monitoring system (ioc-sealevelmonitoring.org). The findings revealed a high probability of tidal flooding during the north wind season, particularly in January and February. Notably, tidal elevations during flooding events reached 3.06 m on January 25, 2023, 3.00 m on February 21, 2023, and 3.09 m on February 12, 2024. These events were driven by a combination of oceanographic and atmospheric factors, including high tidal ranges during spring tides, strong wind speeds averaging 19.04 to 21.43 knots in January–February 2023 and 18.65 knots in February 2024, dominant southward current patterns, and significant wave heights reaching up to 1.08 m. The alignment of the sun, moon, and earth during full and new moon phases amplified gravitational forces, causing elevated sea levels. Furthermore, strong winds during the north wind season contributed to higher wave heights, intensifying flooding impacts. Analysis of current patterns indicates that the highest speeds were recorded during the northern wind season, specifically in January and February, which coincides with the tidal flooding events. The currents predominantly moved southward, aligning with the wind direction during this season. This study reveals oceanographic and atmospheric interactions driving tidal flooding, offering insights for mitigation and adaptation to enhance resilience in vulnerable coastal regions.

oai:ojs.ejournal.undip.ac.id:article/636 2012-02-28T08:33:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/636 2012-02-28T08:33:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 2 (2007): Jurnal Ilmu Kelautan; 111-118 Tarsim, Tarsim Zairin Jr, M. Riani, E. 2012-02-28 15:16:39 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/636 id Kontrol hormonal pada reproduksi udang belum mengalami perkembangan yang signifikan. Pada umumnyauntuk mempercepat kematangan gonad induk udang digunakan teknik ablasi. Mekanisme dan peranan hormonpada proses reproduksi udang belum banyak diketahui. Keberadaan hormon steroid pada krustase telah dikemukaan oleh beberapa peneliti, tetapi peranannya belum banyak diketahui. Pada penelitian ini dikajipengaruh penyuntikan hormon estradiol-17β pada perkembangan gonad induk udang putih (Litopenaeus vannamei). Penelitian Ini menggunakan dosis 0,10¼g/g bobot tubuh dengan perlakuan penyuntikan tunggal (hari ke-0 dan ganda (hari ke-0 dan ke-6). Sebagai pembanding dilakukan uji tanpa perlakuan (kontrol). Untuk melihat respon perkembangan gonad, pemeliharaan induk dilakukan selama 12 hari. Hasil penelitian menunjukkan bahwa estradiol-17β berpengaruh positif pada perkembangan gonad. Gonado somatic index (CSI) dan rata-rata diameter oosit pada perlakuan relative lebih tinggi dibandingkan kontrol. Penyuntikan ganda memberikan pengaruh paling besar dengan peningkatan GSI sebesar 0,453 dan rata-rata diameteroosit 23,97 μm. Oosit pada gonad hanya mampu berkembang hingga tahap previtelogenesis. Hal ini menunjukkan bahwa estradiol-17β berperang dalam vitelogenesis endogenous. Keberadaan hormon penghambat perkembangan yang dihasilkan tangkai mata diduga menyebabkan oosit tidak dapat mencapai matang. Analisis SDS-PA GE menunjukkan bahwa protein kuning telurpada gonad terdapat 5 sub unit dengan perkiraan bobot 95, 98, 109 kDa dan dua unit >118 kDa. Kata kunci:Gonad, estradiol-17β, oosit, L. vannamei

oai:ojs.ejournal.undip.ac.id:article/21160 2021-10-13T01:05:52Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/21160 2021-10-13T01:05:52Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 4 (2019): Ilmu Kelautan; 153-158 Yona, Defri; Marine Science Department, Fisheries and Marine Sciences Faculty, Brawijaya University Nandaningtyas, Zefanya; Marine Science Department, Fisheries and Marine Sciences Faculty, Brawijaya University Siagian, Bernads Daniel Marolop; Marine Science Department, Fisheries and Marine Sciences Faculty, Brawijaya University Sari, Syarifah Hikmah Julinda; Marine Science Department, Fisheries and Marine Sciences Faculty, Brawijaya University Yunanto, Agung; Institute for Marine Research and Observation Iranawati, Feni; Marine Science Department, Fisheries and Marine Sciences Faculty, Brawijaya University Fuad, Mochamad Arif Zainul; Marine Science Department, Fisheries and Marine Sciences Faculty, Brawijaya University Putri, Junika Chintia Ayu; Marine Resources Exploration and Management Research Group, Fisheries and Marine Sciences Faculty, Brawijaya University Maharani, Mela Dita; Marine Resources Exploration and Management Research Group, Fisheries and Marine Sciences Faculty, Brawijaya University 2019-12-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/21160 microplastics; marine debris; manta net; plankton net; Bali Strait en Two methods of microplastics sampling in the Bali Strait, manta net (250 µm mesh size) and plankton net (20 µm mesh size), were compared. The difference in the mesh sizes could result in the difference of the microplastics found. Water samples from both sampling tools were analyzed with filtration and all organic materials were removed using Hydrogen Peroxide.  Natrium chloride (NaCl) was used to further separate microplastics and organic materials based on its density. The result identified three types of microplastics found in Bali Strait: fibers, films and fragments with total abundances of microplastics were 32.48 x 102 particles.m-3 and 16.33 x 102 particles.m-3using manta net and plankton net, respectively. These results indicated that the numbers of microplastics per cubic metres was higher using manta net sampling tool compared to plankton net. This may likely caused by the smaller size of the mesh used and also the sampling area covered using manta net.  

oai:ojs.ejournal.undip.ac.id:article/4696 2017-08-19T22:45:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/4696 2017-08-19T22:45:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 3 (2012): Ilmu Kelautan; 176-182 Sedjati, Sri; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro. Jl. Raya Undip, Marine Station Teluk Awur, Jepara. Yudiati, Ervia; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro. Jl. Raya Undip, Marine Station Teluk Awur, Jepara. Suryono, Suryono; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro. Jl. Raya Undip, Marine Station Teluk Awur, Jepara. 2012-09-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/4696 en Penelitian pigmen Spirulina sp. dilakukan untuk menentukan kandungan pigmen polar dan non polar dari Spirulina sp. dengan metode Spektroskopi UV-Vis. Pigmen polar diekstraksi dengan menggunakan larutan buffer fosfat (NaOH-KH2PO4) pH 7, sedangkan pigmen non polar diekstraksi dengan menggunakan aseton murni. Hasil penelitian menunjukkan bahwa pigmen polar berwarna biru dan kadarnya adalah sebesar 42,272±0,05 mg/g (berat kering), pigmen ini terdiri dari fikosianin (29,159±0,29 mg/g), allofikosianin (9,363±0,20 mg/g), dan fikoeritrin (3,750±0,09 mg/g). Warna pigmen non polar adalah hijau terang dan kadarnya sebesar 4,498±0,06 mg/g (berat kering), pigmen ini terdiri dari klorofil a (3,349±0,03 mg/g) dan karotenoids (1,158±0,03 mg/g). Ekstrak pigmen polar Spirulina sp. kadarnya lebih tinggi dibanding pigmen non polarnya. Pigmen fikosianin berpotensi dikembangkan sebagai bahan aditif pewarna biru alami, karena: kadarnya paling tinggi, menghasilkan warna biru cerah dan cemerlang, bersifat nutrisi fungsional dan tidak beracun.Kata kunci: Spirulina sp., polar, non polar, pigmen, alamiResearch on pigments from Spirulina sp. powder has been done in order to determine polar and non polar pigments content by UV-Vis Spectroscopy method. Polar pigments were extracted using phosphate buffer (NaOH-KH2PO4) pH 7, while non polar pigments were extracted using pure aseton. The result showed that colour of polar pigment was dark blue and its content was 42,272±0,05 mg/g (dry weight), these pigments consist of phycocyanin (29,159±0,29 mg/g), allophycocyanin (9,363±0,20 mg/g), and phycoerythrin (3,750±0,09 mg/g). The colour of non polar pigment was light green and its content was 4,498±0,06 mg/g (dry weight), these pigments consist of chlorophyll a (3,349±0,03 mg/g) and carotenoids (1,158±0,03 mg/g). Due to the high content of pigments from Spirulina sp, showing a bright blue colour, having functional nutrition, and non toxic, the polar pigment phycocyanin have been found suitable for use as additif natural blue colorant.Key word: Spirulina sp., polar, non polar, pigment, natural

oai:ojs.ejournal.undip.ac.id:article/52977 2023-11-03T06:35:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/52977 2023-11-03T06:35:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 2 (2023): Ilmu Kelautan; 203-216 Yanti, Asri; Study Program of Aquatic Resources Management, Graduate Program, IPB University Sulistiono, Sulistiono; Department of Aquatic Resource Management, Faculty of Fisheries and Marine Sciences, IPB University Mashar, Ali; Department of Aquatic Resource Management, Faculty of Fisheries and Marine Sciences, IPB University Kleinertz, Sonja; Marine Ecology Department, Faculty of Biology and Chemistry, University of Bremen 2023-06-10 01:00:13 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/52977 Parrotfish; sex change; gonad maturity en Parrotfish (Scarus rivulatus) is a species that can undergo sex change at a certain age and size (hermaphrodite protogynous). This study aims to analyze the process of sex change based on body color and gonadal tissue changes, as well as the gonadal development of the fish. Sampling was conducted monthly from January to September 2022. Fish samples were collected from fishermen in Seribu Islands. The parameters observed were sex, gonad maturity stage, body color changes, and anatomy and histology of the gonad. The samples were 1605 individuals, consisted of 831 females, 309 primary males (initial phase of males), and 465 secondary males (terminal phase of males). The total length of these fish ranged 8.8- 22.4 cm (females), 10.5-22.6 cm (primary males of males), and 15.1-28.1 cm (secondary males). Morphological differences between female fish, primary males, and secondary males are generally showed in body size, fin size, and body coloration. The histological analysis results of the gonads of primary male fish was indicated by the presence of residual perinucleolar oocytes in the layer of the gonads that coexist with sperm tissue. The body size of first mature gonads was 13.0 cm (female), 16.6 cm (primary male), and 17.6 cm (secondary male). Gonadal maturity stage (GMS) III and IV dominated each observation time. Hence, it was suspected that the fish spawned throughout the year.  However, based on the distribution of the GMS, there was an increase in reproductive activity in January-March and July-September, with peak spawning in March and September.

oai:ojs.ejournal.undip.ac.id:article/1405 2017-08-19T22:49:45Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1405 2017-08-19T22:49:45Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 1 (2010): Ilmu Kelautan; 17-22 Fauziyah, Fauziyah; Jl. Lingkar Kampus UNSRI Inderalaya PS Ilmu Kelautan FMIPA Universitas Sriwijaya. Telp 081373371811 fax 0711-581118. E-mail: siti_fauziyah@yahoo.com Hartoni, Hartoni; Jl. Lingkar Kampus UNSRI Inderalaya PS Ilmu Kelautan FMIPA Universitas Sriwijaya. Telp/fax 0711-581118. Agussalim, A; Jl. Lingkar Kampus UNSRI Inderalaya PS Ilmu Kelautan FMIPA Universitas Sriwijaya. Telp/fax 0711-581118. 2012-01-29 05:53:05 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1405 id Cruise track hidroakustik di perairan Selat Bangka, Bangka Belitung dilaksanakan pada bulan Agustus 2007 dan Juli 2008 menggunakan scientic echosounder split beam SIMRAD EK 60. Data akustik (echogram) memiliki keterbatasan dalam membedakan echo spesies yang ada, sehingga sulit menentukan jenis dan gerombolan (shoal) ikan, terutama pada ikan-ikan multispesies. Untuk itu, metode hidroakustik yang digunakan adalah metode deskriptor akustik. Karakteristik shoaling ikan pelagis kecil di Perairan Selat Bangka pada musim timur adalah sebagai berikut : Kelompok pertama, berbentuk elips dengan ukuran panjang 4.3 m, berada pada kedalaman 8,9 m dan posisi shoaling ikan pada kedalaman 25.2% dari dasar perairan. Energi akustik rata-rata (-46,4) dB. Kelompok kedua, berbentuk elips dengan ukuran panjang 6,2 m, berada pada kedalaman 5,5 m dan posisi shoaling ikan pada kedalaman 66,4% dari dasar perairan. Energi akustik rata-rata (-44,7) dB.Kata kunci : gerombolan, hidroakustik, ikan pelagis, Selat Bangka A series of hydroacoustic surveys conducted in Bangka Strait in August 2007 and July 2008 to collect acoustic data (echogram) of pelagic fish shoals using SIMRAD EK 60 split beam scientific echosounder system. Echogram have limited by an inability to distinguish between the echoes of co-occurring species then incorrect to determine the species composition and shoaling of fishes.  Particularly in multi species environments. Small pelagic fish shoal characteristics can be described as follows: First group, The fish shoals were in ellipsoidal shape with length 4.3m. Mean depth of the fish shoals were in 8.9 m and relative altitude 25.2% from sea bottom. Average acoustic energy was -46.4 dB.  Second group, The fish shoals were in ellipsoidal shape with length 6.2m. Mean depth of the fish shoals were in 5.5 m and relative altitude 66.4% from sea bottom. Average acoustic energy was -44.7 dB. Keywords : shoal, Bangka Strait, hydroacoustic, pelagic fish.

oai:ojs.ejournal.undip.ac.id:article/10233 2021-10-13T05:37:09Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/10233 2021-10-13T05:37:09Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 2 (2017): Ilmu Kelautan; 67-74 Findra, Muhammad Nur; Bogor Agricultural University Setyobudiandi, Isdradjad; Bogor Agricultural University Butet, Nurlisa Alias; Bogor Agricultural University Solihin, Dedy Duryadi; Bogor Agricultural University 2017-06-05 07:07:01 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/10233 en Giant clam population has been decreased in a few years. Resource management requires information from various aspects, such as ecological, population, and other aspects. This study was aimed at assessing the genetic profile of Tridacna giant clam in Wakatobi National Park waters using Cytochrome oxidase subunit I (COI) genetic marker. Sample collection was conducted around the three main islands, i.e., Wangi-wangi, Kaledupa, and Tomia. Genetic analysis using COI gene may contribute in identifying giant clams up to the species level and showed the relationship among species. The research found 41 specific nucleotide sites for the clams. T. crocea, T. squamosa and T. maxima had 2, 15 and 24 sites, respectively. COI gene as a biological marker was able to separate groups of giant clam by species. Nucleotide variation of T. crocea from Wakatobi was the highest among other locations, so it could be used as a genetic source for translocation and domestication. Keywords: cytochrome oxidase subunit I, specific nucleotide, Tridacna, Wakatobi National Park

oai:ojs.ejournal.undip.ac.id:article/7086 2017-08-19T22:43:57Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7086 2017-08-19T22:43:57Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 3 (2013): Ilmu Kelautan; 127-133 Budiyanto, Fitri; Research Center for Oceanography-Indonesian Institute of Sciences Jl. Pasir Putih 1 No. 1, Ancol Timur, Jakarta, Indonesia. 14430 Lestari, Lestari; Research Center for Oceanography-Indonesian Institute of Sciences Jl. Pasir Putih 1 No. 1, Ancol Timur, Jakarta, Indonesia. 14430 2013-06-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7086 en Adsorpsi merupakan proses penting dalam mengontrol transfer logam dari larutan ke padatan. Cd dan Zn merupakan logam yang banyak digunakan manusia sehingga berpotensi banyak dibuang ke lingkungan. Penelitian ini membandingkan model adsorpsi Cd dan Zn dalam sistem air laut-sedimen di delta Berau, Kalimantan Timur. Sampel air dan sedimen didapat di 12 stasiun. Untuk mendapatkan konsentrasi Cd dan Zn, sampel air dianalisis menggunakan metode back extraction yang menggunakan bahan kimia organik (Amonium pirolidinditio karbamat dan metili sobutil keton) dan anorganik (asam nitrat). Sampel sedimen dianalisis menggunakan distruksi asam yang mengacu metode dari USEPA 3050b. Data yang didapat dikalkulasi berdasar model adsorpsi yaitu: Model partisi, Freundlich Model dan Langmuir Model. Dalam perhitungan di studi ini, Delta Berau dibagi menjadi dua bagian: bagian utara dan bagian selatan. Dari kedua bagian ini, Model isotermis langmuir merupakan model yang paling cocok untuk proses adsorpsi dalam sistem air sedimen. Di sungai bagian utara, hasil perhitungan linearitas memberikan angka R2=0.949 untuk Cd dan R2=0.838 untuk Zn, sedangkan, untuk sungai bagian selatan nilai R2=0.575 untuk Cd dan R2=0.944 untuk Zn. Kapasitas adsorpsi maksimum Cd adalah 0,5-0,6 mg.kg-1 sedangkan kapasitas adsorpsi maksimum untuk Zn adalah 12-43 mg.kg-1. Prediksi kapasitas maksimal sedimen menggambarkan total kapasitas sedimen sebagai Cd dan Zn deposit. Penambahan Cd dan Zn akan menyebabkan logam-logam tersebut tidak teradsorpsi dan berpotensi racun bagi organisme perairan. Kata kunci: delta Berau, adsorpsi, air, sedimen, model isotermis langmuir  Adsorption is important process for controlling metals transfer from dissolved phase to solid phase. Cd and Zn become trace metal which generally used in human activity and the release of those trace metals into aquatic environment cannot be evaded.The purpose of this work was to compare adsorption models of Cd and Zn in water-sediment system in Berau Delta, East Kalimantan. Sediment and water sample were collected at 12 stations. Measuring Cd and Zn concentration, water sample analysis was conducted using organic chemicals (Ammonium Pyrrolidine Dithio Carbamate and Methyl Isobutyl Ketone) and inorganic chemicals (nitric acid) based on back extraction procedure. On the other hand, sediment analysis was conducted using acid destruction according to USEPA method 3050b. The data would be calculated in some different adsorption model: Partition model, Freundlich model and Langmuir model. In this study, Berau Delta was divided into two groups: North river stream (N) and South river stream (S). In both groups,Langmuir isotherm model was the most representative model for adsorption process in water-sediment system. In North stream, the linearity of data gave R2=0.949 for Cd and R2=0.838 for Zn, whereas, R2=0.575 for Cd and R2=0.944 for Zn calculated in the South stream. Maximum adsorption capacity of Cd was 0.5-0.6 mg.kg-1 and maximum adsorption capacity of Zn was 12-43 mg. kg-1. Those maximal adsorption capacities illustrated the total capability of sediment as Cd and Zn deposit. Another Cd and Zn input will not be adsorbed and probably become bioavailable for aquatic life. Keywords: Berau delta, adsorption, water, sediment, langmuir isotherm model

oai:ojs.ejournal.undip.ac.id:article/60261 2024-10-04T07:32:43Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/60261 2024-10-04T07:32:43Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 2 (2024): Ilmu Kelautan; 211-221 Eriegha, Ochuko Joshua; Department of Fisheries and Aquaculture, Delta State University Department of Fisheries and Aquaculture, Nigeria Maritime University Ekelemu, Jerimoth Kesena; Department of Fisheries and Aquaculture, Delta State University Nwachi, Oster Francis; Department of Fisheries and Aquaculture, Delta State University 2024-06-20 23:50:42 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/60261 Morphometric; Meristic; Ethmalosa fimbriata; Qua Iboe estuary; Escravos estuary; Lagos lagoon en Environmental interactions have long been considered an important factor in morphological differentiation in fish species. This study evaluated the morphological variations in Ethmalosa fimbriata from three water bodies (Qua Iboe estuary, Escravos estuary, and Lagos lagoon) adjoining the Gulf of Guinea, Nigeria. Fish samples were collected with the assistance of fishers using nets and were taken to the laboratory, where they were identified. Morphological evaluations were thereafter made on a total of 450 samples, comprising 150 random samples from each water body. Fish from the Qua Iboe estuary and Lagos lagoon shared the most morphometric characteristics (weight, standard length, dorsal fin base, and caudal peduncle length) that were significantly different (P< 0.05) from those in the Escravos estuary. The length-weight regression of E. fimbriata can be described by the following equation: W = 0.163TL2.7078, W = 0.1915TL1.4322, and W = 0.2039TL1.4394 for Qua Iboe estuary, Escravos estuary, and Lagos lagoon, respectively. The regression coefficient b revealed that all three populations of E. fimbriata had a negative allometric growth pattern. Fish samples from the Lagos lagoon had the highest condition factor (1.01±0.02) while those from the Escravos estuary had the least (0.79±0.02). Conclusively, the study revealed that E. fimbriata from the Escravos estuary was less fit compared with the other water bodies. This may be attributed to crude oil pollution, overfishing, and frequent water disturbance by vessels. The data generated is critical to understanding population dynamics and further contributing to sustainable fisheries practices, management, and conservation efforts.

oai:ojs.ejournal.undip.ac.id:article/1619 2014-12-30T01:00:58Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1619 2014-12-30T01:00:58Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 4 (2009): Jurnal Ilmu Kelautan; 215-221 Laapo, Alimudin; Program Doktor PS. Pengelolaan Sumberdaya Pesisir dan Lautan Sekolah Pascasarjana Institut Pertanian Bogor, Telp. (0251) 8337292; 081310420337; alimudin_73@yahoo.com Fahrudin, Achmad; Program Studi Pengelolaan Sumberdaya Pesisir dan Lautan Sekolah Pascasarjana Institut Pertanian Bogor Bengen, Dietriech G Damar, Ario 2012-02-06 06:44:17 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1619 id Gugus pulau Togean memiliki potensi sumberdaya perairan yang dimanfaatkan untuk kegiatan wisata bahari. Peningkatan kunjungan turis pada periode tertentu menyebabkan aktivitas wisata dan kegiatan terkait meningkat, sehingga berpengaruh terhadap penurunan kualitas perairan dan obyek wisata. Penelitian ini bertujuan untuk mengkaji keterkaitan antara musim kunjungan turis dalam setahun dengan perubahan yang terjadi pada beberapa parameter kualitas perairan laut di sekitar kawasan obyek wisata. Metode analisis yang digunakan adalah PCA (Principal Component Analysis) dan analisis IPL (Indeks Pencemaran lingkungan). Hasil penelitian menunjukkan bahwa peningkatan kunjungan turis menyebabkan peningkatan nilai BOD5, COD, dan NH3 serta penurunan nilai DO di perairan. Nilai korelasi keempat parameter tersebut lebih tinggi pada bulan Nopember dibanding Juli, dan merupakan komponen parameter pembentuk sumbu utama pertama di kedua musim. Peningkatan nilai kekeruhan, penurunan salinitas dan suhu pada bulan Nopember dibanding bulan Juli karena terkait dengan musim penghujan dan gelombang yang tinggi. Indeks pencemaran lingkungan perairan meningkat 21,05% selama musim puncak kunjungan turis, namun secara umum perairan gugus Pulau Togean masih dalam kategori belum tercemar. Kata kunci : kualitas perairan laut, aktivitas wisata, Gugus Pulau Togean  Marine resources of Togean Islands have been used for tourism activity. The increasing number of tourist in certain period every year has lead to increasing of tourism activity and its related activity. This condition probably effects sea water and habitat qualities. This research aim to studied correlation between tourist season in one year and the change of marine water quality parameters in tourism area. The data were analyzed using PCA (Principal Component Analysis) and EPI(environmental pollution index). The result showed that BOD5, COD, and NH3 increased while DO decrease during the peak season of tourism activity. The correlation value of those four parameters was relatively higher in November than in July.  Those parameters were the component that forms the main axis in both seasons. The increasing of turbidity and decreasing of salinity and temperature in November rather than in July were correlated with rainy season and high wave. Water pollution index increasing during peak season of tourism activity, but in general, marine water quality of Togean Islands can be categorized as good (not yet polluted) based on water pollution index. Key words: sea water quality, tourism activity, Islands Togean

oai:ojs.ejournal.undip.ac.id:article/13597 2021-10-13T03:59:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/13597 2021-10-13T03:59:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 1 (2018): Ilmu Kelautan; 55-62 Mulyaningrum, Sri Redjeki Hesti; Research and Development Institute for Coastal Aquaculture (RICA) Suwoyo, Hidayat Suryanto; Research and Development Institute for Coastal Aquaculture 2018-03-03 15:31:35 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/13597 Research and Development Institute for Coastal Aquaculture en Mass propagation of tissue culture produced seaweed seedling was conducted in the pond. The present study aims to evaluate the growth of tissue culture produced seaweed seedling of Gracilaria verrucosa, its agar yield and related water quality variables during propagation in pond. The seedling propagation was conducted in pond using long line method for 9 cycles (30 days per cycle). The daily growth rate was calculated by weighing 30% of the total amount of seaweed at ropes line every 15 days. Agar yield was analyzed every 30 days in hot water extraction method. Water quality monitoring was conducted every 15 days. The data of daily growth rate and agar yield were analyzed descriptively. A simple linear regression analysis was conducted in order to analyze the relationship between growth and agar yield as well relationship between water quality variables, growth and agar yield. The result showed that the average daily growth rate of nine cycles was 3.38±1.49%. The highest agar yield was yielded from cycle II (27.84±1.60%) and the lowest was in cycle I (10.30%±2.15). There is no relationship between daily growth rate and agar yield (R2=0.055). Daily growth rate was mostly influenced by phosphate (P<0.05), nitrate (P<0.05), salinity (P<0.05) and light penetration (P<0.05). Meanwhile, agar yield was mostly influenced by temperature (P<0.05) and light penetration (P<0.05). Present study promising for seaweed G. verrucosa mass cultivation of tissue culture product which is a feasible alternative method to supply seaweed seedlings in seaweed farming development.  Keywords: growth, agar yield, G. verrucosa, tissue culture, water quality

oai:ojs.ejournal.undip.ac.id:article/2320 2012-03-02T20:33:45Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2320 2012-03-02T20:33:45Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 3 (2007): Jurnal Ilmu Kelautan; 133-138 Dian, Aristi; Program Pascasarjana Teknologi Kelautan, IPB-Bogor Jurusan Perikanan, FPIK-UNDIP. Jl. Hayam Wuruk 4A Semarang-50241 Telp-Fax. 024-8313759, 024-8311525. Email: adpf2004@yahoo.com Ari, Purbayanto; Dept. Pemanfaatan Sumberdaya Perikanan, FPIK-IPB. Jl. Agatis, Kampus IPB Darmaga, Bogor. Telp-Fax. 0251-622935, 0251-625961. Email: aripy@indo.net.id Santoso, Joko; Dept. Pengolahan Hasil Perikanan, FPIK-IPB. Jl. Agatis, Kampus IPB Darmaga, Bogor. Telp-Fax. 0251-622915, 0251-622916. Email: joko2209@yahoo.com Baskoro, Mulyono S; Dept. Pemanfaatan Sumberdaya Perikanan, FPIK-IPB. Jl. Agatis, Kampus IPB Darmaga, Bogor. Telp-Fax. 0251-622935, 0251-625961 Monintja, Daniel R; Dept. Pemanfaatan Sumberdaya Perikanan, FPIK-IPB. Jl. Agatis, Kampus IPB Darmaga, Bogor. Telp-Fax. 0251-622935, 0251-625961 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2320 en Studi tingkah laku makan ikan merupakan bagian yang paling penting untuk mengetahui efektivitas penggunaan umpan. Penelitian ini bertujuan untuk mengetahui respon dan pola tingkah laku makan ikan kerapu macan (Ephinephelus fuscoguttatus) dengan perbedaan komposisi kimia umpan. Penelitian dilakukan dengan metode eksperimen laboratorium. E. fuscoguttatus yang digunakan memiliki panjang total rata-rata 200 mm. Umpan yang digunakan adalah udang krosok (Metapenaeus elegans) dan ikan rucah (Sardinella gibbosa). Data penelitian meliputi waktu respon dan pola tingkah laku makan E. fuscoguttatus terhadap umpan dengan lama perendaman 1, 7 dan 12 jam. Komposisi kimia masing-masing umpan dianalisis berdasarkan lama waktu perendaman. Data diuji dengan menggunakan analisis statistik t student (uji-t). Hasil penelitian menunjukkan waktu respon E. Fuscoguttatus terhadap umpan udang  krosok dan ikan rucah tidak berbeda nyata  (nilai t­­hitung 2,25). Respon makan E. fuscoguttatus dengan perbedaan waktu perendaman umpan udang krosok dan ikan rucah  selama 1 jam dan 7 jam berbeda sangat nyata (nilai t-hitung 3,85 dan 5,70). Lama waktu perendaman umpan 12 jam tidak berbeda nyata (nilai thitung 0,86). Semakin lama waktu perendaman umpan (hingga 12 jam) terjadi penurunan komposisi kimia sehingga berpengaruh pula terhadap menurunnya respon makan E. fuscoguttatus. Kata kunci: Komposisi kimia umpan, pola tingkah laku makan, ikan kerapu macan (Ephinephelus fuscoguttatus)    Fish behavior study is necessary to know the use of bait effectiveness. This research objective was to analyze response and feeding behavior of grouper (Ephinephelus fuscoguttatus) with difference of the bait chemical composition. The research was conducted by laboratory experimental method. The fish used was 200 mm total length in average. The baits used were shrimp (Metapenaeus elegans) and trash fish (Sardinella gibbosa). Data collection consist of response time and feeding behavior pattern of E. fuscoguttatus towards bait with soaking time of 1, 7, and 12 hours. Chemical composition of each baits  was analysis based on soaking time. Data was statistical analyzed using t- student test. The result showed that response time of E. fuscoguttatus to shrimp bait and fish was insignificantly difference (t-value was 2.25).  The feeding response of E. fuscoguttatus with soaking time difference of shrimp bait and trash fish during 1 and 7 hours was significantly difference (t-value was 3.85 and 5.70). The bait soaking time until 12 hours was insignificantly difference (t-value was 0.86). The longer bait soaking time (until 12 hours) would decrease the bait chemical composition that influenced to decrease feeding response of E. fuscoguttatus. Key words: Chemical composition of baits, feeding behavior, Ephinephelus fuscoguttatus

oai:ojs.ejournal.undip.ac.id:article/37481 2021-12-05T18:30:07Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/37481 2021-12-05T18:30:07Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 3 (2021): Ilmu Kelautan; 189-196 Purwanto, Purwanto; Department of Oceanography, Diponegoro University Sugianto, Denny Nugroho; Department of Oceanography, Diponegoro University Zainuri, Muhammad; Department of Oceanography, Diponegoro University Permatasari, Galuh; Department of Oceanography, Diponegoro University Atmodjo, Warsito; Department of Oceanography, Diponegoro University Rochaddi, Baskoro; Department of Oceanography, Diponegoro University Ismanto, Aris; Department of Oceanography, Diponegoro University Wetchayont, Parichat; Department of Geography, Faculty of Social Science, Srinakharinwirot University Wirasatriya, Anindya; Department of Oceanography, Diponegoro University 2021-09-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/37481 significant wave height; swell; wind wave; surface wind; Indonesian seas en The previous studies have simulated the variability of the wave within the Indonesian seas which showed that the variability of wave follows the seasonal pattern. However, their analysis only consider the influence of local wind forcings. The bias and error of their simulated wave were also unclear. In the present study, we investigate the variability of wave within the Indonesian seas and its relation with the surface wind speed using the combination of reanalysis and remote sensing data with high accuracies. We split the analysis into swell and wind wave to obtain the influence of local and remote wind forcings. We show that at the inner seas (i.e., the South China Sea, Java Sea, Flores Sea, Banda Sea and Arafura Sea), the variability of significant wave height (SWH) is majorly influenced by the variability of the speed of monsoon wind. The maximum SWH during Northwest monsoon (NWM) season is located at the South China Sea while during Southeast monsoon (SEM) season is at Arafura Sea. This indicates that the wind wave (sea) is dominant at the inner seas. At the open seas (i.e., Pacific Ocean and Indian Ocean) the variability of SWH less corresponds to the the speed of monsoon wind. The remote wind forcings control the wave variability in the open ocean area. This indicates that swell is dominant at the open seas. In general, the magnitude of SWHswell is also more than SWHsea within the Indonesian seas.

oai:ojs.ejournal.undip.ac.id:article/59805 2024-03-31T21:48:11Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/59805 2024-03-31T21:48:11Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 1 (2024): Ilmu Kelautan; 61-70 Anggoro, Naufal Sebastian; Magister Biology Study Program, Department of Biology Faculty of Science and Mathematics, Universitas Diponegoro Kusumaningrum, Hermin Pancasakti; Biotechnology Study Program, Department of Biology Faculty of Science and Mathematics, Universitas Diponegoro Budiharjo, Anto; Biotechnology Study Program, Department of Biology Faculty of Science and Mathematics, Universitas Diponegoro Wijanarka, Wijanarka; Biotechnology Study Program, Department of Biology Faculty of Science and Mathematics, Universitas Diponegoro Zainuri, Muhammad; Oceanography Study Program, Faculty of Fisheries and Marine Science, Universitas Diponegoro Hadibarata, Tony; Faculty of Engineering and Science, Curtin University 2024-03-27 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/59805 bacteria; biofouling; Tanjung Mas Port; metabarcoding; NGS en Tanjung Emas Port is the entry and exit point for trade commodities, both regional and international filled with many ships. This condition makes biofouling a very massive process in that place by various types of marine bacteria. The initial formation of a biofilm is relevant to bacterial diversity, colonization and adhesion. The objective of the study was assessing bacterial diversity in relation to with biofouling within Tanjung Mas Port Semarang, by using 16S rRNA eDNA metabarcoding Next-Generation Sequencing (NGS). Seawater samples from aquatic sites of Tanjung Mas harbor was used for DNA extraction and amplification of the 16S rRNA V-3-V4 hypervariable region, followed by sequencing and library construction of eDNA Metabarcoding. Sequence processing and analysis was performed in QIIME 2 and RStudio using DADA2 for advanced sequencing processing and Phyloseq. The results of this research showed that bacteria is the predominant taxon constituting 100% of the community. The taxon consists of Proteobacteria (49.38%), Bacteroidota (8.67%), and Firmicutes (8.88%). Alphaproteobacteria (20.92%) and Gammaproteobacteria (12.39%) dominate at the Class level, emphasizing their versatility and ecological influence. At the Order and Family levels reveals the prevalence of Rhodobacterales (10.04%), Chitinophagales (2.53%), Rhizobiales (3.61%), Rhodobacteraceae (5.67%), Saprospiraceae (3.63%), and Rhizobiaceae (2.15%). It was found that the unculturable taxa dominance in Tanjung Mas Port was 44.66%. These taxonomic entities contribute significantly to the taxonomic and functional diversity of the microbial community, influencing nutrient cycling, organic matter degradation, ecosystem stability and biofilm formation.

oai:ojs.ejournal.undip.ac.id:article/67011 2024-12-23T10:10:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/67011 2024-12-23T10:10:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 4 (2024): Ilmu Kelautan; 557-566 Ilac, Adora Giron; College of Arts and Sciences, University of Northern Philippines Foronda, Joanna Mae Saoadan; College of Arts and Sciences, University of Northern Philippines Ayop, Antonio Narollo; College of Arts and Sciences, University of Northern Philippines Europa-Morales, Anna Liza Villanueva; College of Arts and Sciences, University of Northern Philippines Ruadap, May Evellia Valencia; College of Arts and Sciences, University of Northern Philippines 2024-12-11 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/67011 Gracilaria sp; raft culture method; water parameters; growth increment en The seaweed Kawkawayan (Gracilaria sp.), marketed as a food product in the Ilocos Region, has the potential for high profitability due to its growing demand across various industries. The research, conducted in Sinait, Ilocos Sur, used the raft culture method to assess growth by measuring average weight every 15 days and analyzing its relationship with seawater parameters (dissolved oxygen, pH, turbidity, salinity, water current, conductivity, water temperature, and total dissolved solids).  The data were analyzed using a descriptive correlation design, employing the Mean and Pearson Product Moment of Correlation. A 3.5 X 5 m raft with six monolines containing 23 seedlings was installed in the culture site. The results indicated that pH, conductivity, TDS, and turbidity were within the normal range, whereas temperature, salinity, DO, and water current were above the average. Gracilaria's weight increased consistently every 15 days, reaching a peak of 22.99 g on the 105th day. However, there was no significant correlation between the weight gain and the measured seawater parameters. The fluctuations in Gracilaria’s weight were linked to thallus breakdown caused by vigorous water movements. The study’s findings should be made available to fisherfolks in the coastal community who cultivate Gracilaria; optimal cultivation of this seaweed can be obtained when disturbances are minimal particularly from February to May thus boosting aquaculture productivity. Alternative cultivation methods like tubular nets and cage systems, along with valuable seaweed species, are recommended. Fisherfolks’ participation is crucial for their success and the future of seaweed farming and marine resource conservation.

oai:ojs.ejournal.undip.ac.id:article/1849 2017-08-19T22:47:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1849 2017-08-19T22:47:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 2 (2011): Ilmu Kelautan; 70-77 Nursyirwani, Nursyirwani; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Riau Kampus Bina Widya Sp.Panam E-mail: nursyirwani_adnan@yahoo.com Asmara, W.; Program Studi Sain Veteriner Fakultas Kedokteran Hewan, Universitas Gajah Mada 3Jurusan Perikanan Fakultas Pertanian, Universitas Gajah Mada Telp.0761-862620 Wahyuni, A.E.T.H.; Program Studi Sain Veteriner Fakultas Kedokteran Hewan, Universitas Gajah Mada Triyanto, Triyanto; 3Jurusan Perikanan Fakultas Pertanian, Universitas Gajah Mada 2012-02-12 08:14:26 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1849 id Tujuan penelitian ini adalah untuk mengisolasi dan menguji potensi antibakterial bakteri asam laktat dari ikan Kerapu Macan (Epinephelus fuscoguttatus) terhadap bakteri patogen Vibrio alginolyticus. Bakteri tersebut diisolasi dari usus ikan dengan metode sebarulas pada media agar MRS dan GYP+CaCO3. Koloni yang tumbuh diidentifikasi  berdasarkan  karakter  morfologi,  biokimia  dan  fisiologi.  Aktivitas  antibacterial  terhadap  V. alginolyticus diuji dengan metode difusi kertas cakram pada media Zobell 2216E lapis ganda, diameter zona jernih disekitar kertas cakram diukur dengan kaliper. Pada medium agar GYP+CaCO3 didapatkan 21 isolat yang menampakkan zona jernih disekitar koloninya. Dari karakteristik morfologi, biokimia dan fisiologi dari isolat-isolat tersebut semua isolat dapat dikategorikan kedalam genus Lactobacillus. Tetapi, dari uji aktivitas antivibrio hanya 20 isolat menunjukkan zona hambat yang berkisar dari 14,0-21,5 mm, dimana tiga isolat menunjukkan aktivitas tertinggi, yaitu berturut-turut isolat KSBU 12C, KSBU 13D dan KSBU 5Da.Kata kunci: Isolasi, bakteri asam laktat, antivibrio, Kerapu Macan The objectives of this research were to isolate and examine antibacterial potency of lactic acid bacteria from Tiger Grouper (Epinephelus fuscoguttatus) against pathogen, Vibrio alginolyticus. The bacteria were isolated from the fish intestine by spread plate method on MRS and GYP+CaCO3  agar media. The grown colonies were identified based on morphological, biochemical and physiological characters. Antibacterial activity against V. alginolyticus was examined by the paper disc diffusion method on Zobell 2216E double layer agar, and clear zone diameter around the paper disc was measured by using caliper. Twenty one isolates  with  clear zone around the colonies were obtained from the GYP+CaCO3 agar. Morphological, biochemical and physiological characteristics of the colonies and cells indicated that all isolates might be categorized into Lactobacillus. However, there were only twenty isolates showed inhibition zones from 14.0-21.5 mm in antivibrio activity test, of which the highest activity was indicated by three isolates namely KSBU12C, KSBU 13D and KSBU 5Da, respectively. Key words: Isolation, lactic acid bacteria, antivibrio, Tiger grouper.

oai:ojs.ejournal.undip.ac.id:article/19360 2019-03-26T05:30:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19360 2019-03-26T05:30:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 3 (2002): Jurnal Ilmu Kelautan; 147-151 Subagiyo, Subagiyo; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Setyati, Wilis Ari; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro 2009-03-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19360 en Penelitian tentang respon bakteri nitrifikasi terhadap penggunaan jerami dan katul sebagai priming agent untuk meningkatkan laju respirasi tanah tambak udang telah dilakukan dengan metode eksperimental menggunakan rancangan acak lengkap. Ada 2 perlakuan yang dibandingkan yaitu pemberian jerami dan pemberian katul, masing-masing dengan 4 sub perlakuan yaitu pemberian jerami atau katul dengan dosis masing-masing 0 kg/m2, 0,2 kg/m2, 0,3 kg/m2, dan 0,4 kg/m2. Penelitian dilakukan menggunakan bejana respirasi yang diisi dengan tanah dasar tambak udang pasca panen. Jumlah bakteri nitrifikasi dihitung dengan metode MPN menggunakan medium mineral untuk bakteri nitrifikasi. Hasil penelitian menunjukan adanya respon peningkatan pertumbuhan bakteri nitrifikasi tanah tambak udang akibat perlakuan penggunaan jerami dan katul sebagai agensia priming agent untuk meningkatkan laju respirasi tanah tambak udang. Respon ini ditunjukan dengan adanya kecenderungan jumlah bakteri nitrifikasi pada perlakuan pemberiaan jerami dan katul yang lebih tinggi dibandingkan tanah yang tidak mendapat perlakuan pemberian jerami dan katul. Pada kondisi penelitian ini respon bakteri nitrifikasi tertinggi terjadl pada perlakuan pemberian jerami atau katul pada dosis 0,2 kg/m2. Hal ini ditunjukan dengan kecenderungan jumlah bekteri nitritikasi yang paling tinggi pada perlakuan pemberian jerami atau katul.Kata kunci: bakteri nitrifikasi; tanah tambak; priming agent; katul; jerami  An experiment was done to assay nitrifier responses on straw and bran application as priming agent to increase pond soil respiration rate. The experiment was done by using complete randomized design. Straw and bran as treatment was applied on sample soil at 0,1 kg/m2, 0,2 kg/m2, 0,3 kg/m2. Soil were placed in respiration chambers (500 ml becker glass) was respended above soil surface, and 50 ml of 1.00 N NaOH was pipetted into the backer glass. Respiration chambers were sealed. Nitrifier enumeration was done by MPN method. The experiment showed that increased of number of nitrifier as responds on application of straw and bran. In experiment condition the highest number of nitrifier along time of experiment was happened in application of straw or bran on 0,2 kg/m2 in dosage.Keywords: Nitrifier; straw; bran; pond soil; priming agent

oai:ojs.ejournal.undip.ac.id:article/2358 2012-03-03T11:58:53Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2358 2012-03-03T11:58:53Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 3 (2004): Jurnal Ilmu Kelautan; 169-173 Karyawati, Tri; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro Semarang Hartati, Retno; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro Semarang Rudiana, Esti; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2358 en Jumlah konsumsi oksigen yang diperlukan organisme untuk proses respirasi selama waktu tertentu disebut konsumsi oksigen. Konsumsi oksigen merupakan parameter fisiologi penting, karena konsumsi oksigen menunjukkan ukuran energi yang dibutuhkan untuk mendukung dan memenuhi kehidupan. Tujuan penelitian ini adalah untuk mengetahui konsumsi oksigen Teripang hitam (Holothuria atra) pada sistem statis dan sistem dinamis. Metode yang digunakan adalah eksperimental laboratoris menggunakan Rancangan Acak Lengkap(RAL) dengan perlakuan sistem statis dan sistem dinamis. Analisa yang digunakan adalah analisa Sidik Ragam dengan pengukuran berulang terhadap waktu pengamatan, sedangkan untuk mengetahui hubungan antara konsumsi oksigen terhadap waktu pengamatan menggunakan analisa korelasi. Hasil analisa data menunjukkan bahwa sistem pengukuran yang berbeda berpengaruh sangat nyata terhadap konsumsi oksigen Teripang hitam (Holothuria atra) . Konsumsi oksigen Teripang hitam (Holothuria atra) pada sistem dinamis lebih stabil daripada sistem statis.Kata kunci : Teripang hitam, konsumsi oksigen, sistem statis dan sistem dinamis.Oxygen total that used organism in respiration until certain time is oxygen consumption. The oxygen consumption is important physiological parameter, because the oxygen consumption that energy size thatneeded in the live. The purpose of reseach was to know oxygen consumption of tee sea cucumber (Holothuria atra) in static and dynamic system. The methode of reseach were experimental laboratories on completely randomized design in static and dynamic system. The analysis statistically by Analysis of Covariance with repeated measurement of time, and to know relationship between the oxygen consumption the time wereused regression analysis. The result of the reseach showed that oxygen consumption were different between static and dynamic system. The oxygen consumption of sea cucumber in dynamic system more stabil thanstatic system.Key words : Sea cucumber, the oxygen consumption, static and dynamic system

oai:ojs.ejournal.undip.ac.id:article/41783 2022-09-06T08:34:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/41783 2022-09-06T08:34:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 2 (2022): Ilmu Kelautan; 141-150 Rahman, Berri Miraz Kholipah; Department of Fisheries Resources Utilization, IPB University Mawardi, Wazir; Department of Fisheries Resources Utilization, IPB University Sondita, Muhammad Fedi Alfiadi; Department of Fisheries Resources Utilization, IPB University Proctor, Craig; CSIRO Oceans and Atmosphere 2022-06-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/41783 Marine waste; Consumable boat supplies; Tuna fisheries en Tuna-fishing boats based at the Cilacap Oceanic Fishing Port are potential contributors to marine debris in the Indian Ocean. Without a quantitative assessment of the types and amount of debris, port management cannot develop a strategy to address this problem. This study estimated the quantities of plastics and cartons disposed of by these fisheries in the Indian Ocean. Data were collected through observations and interviews with boat managers/owners or fishermen in the port, from August to November 2019, to evaluate the boat supplies loaded on board in the port and the waste returned to the port. The marine disposal per fishing trip (the difference between the quantity of supplies taken to sea and the quantity of waste returned to port) was calculated for 89 trips of gillnet and longline boats, for a size range of 20 to 90 GT. There was no at-sea disposal of used engine oil, rice plastic sacks, styrofoam boxes, nor plastic gallon bottles. Other plastics and cartons from consumable packaging were disposed of at sea. The estimates of the plastic waste disposed were 0.8-4.4 kg.boat-1.trip-1 or 2,143-12,024 pieces.boat-1.trip-1 while the estimates of the cartons disposed were 3.5-19.4 kg.boat-1.trip-1 or 203-1,140 pieces.boat-1.trip-1. The study concluded that fishers could easily keep the waste onboard for disposal on return to port. In addition, port management should initiate a system in which the amounts of waste returned to boats returning to port are considered in granting future port clearance to those boats.

oai:ojs.ejournal.undip.ac.id:article/543 2020-10-25T22:28:48Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/543 2020-10-25T22:28:48Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 2 (2008): Jurnal Ilmu Kelautan; 61-66 Maslukah, Lilik 2010-11-11 20:11:55 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/543 id Logam berat di perairan ditemukan da/am bentuk terlarut maupun terikat dalam partikel (seston). Selama di estuari, konsentrasi logam berat akan berubah karena adanya proses pengenceran, adsorpsi dan desorpsi. Penelitian ini bertujuan untuk menentukan pola sebaran logam berat terlarut Pb, Cu dan Zn di muara Sungai Banjir Kanal Barat, Semarang. Pengukuran parameter kimia dan fisika dilakukan bulan September ZOOS pada 7 (tujuh) stasiun. Analisis pola sebaran logam berat terlarut menggunakan diagram mixing. Hasil menunjukkan bahwa logam mengaiami proses pengurangan (removal) pada salinitas 5-15 ‰. Konsentrasi logam terlarut dipengaruhi oleh total padatan tersuspensi air. Kata kunci: Pb, Cu, Zn, pola sebaran, salinitas, padatan tersuspensi total

oai:ojs.ejournal.undip.ac.id:article/9950 2022-05-23T00:34:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9950 2022-05-23T00:34:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 4 (2014): Ilmu Kelautan; 219-225 Ryandhini, Novita Ayu; Ilmu Kelautan Undip Zainuri, Muhammad; Program Studi Oseanografi, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro D. K., Anastasia Rita Tisiana; Badan Penelitian dan Pengembangan Kelautan Perikanan, Pusat Penelitian Pengembangan Sumberdaya Laut dan Pesisir, Kementrian Kelautan Perikanan 2014-12-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9950 id Perairan Selat Badung memiliki karakteristik yang sebagian besar dipengaruhi oleh aktivitas Arus Lintas Indonesia (ARLINDO). Pencampuran massa air akibat pergerakan massa air vertikal menjadikan kondisi lapisan yang homogen, dimana nilai suhu, salinitas dan densitas berada pada nilai yang hampir sama di lapisan tertentu akan membentuk Mixed Layer Depth (MLD). Penelitian dilakukan untuk mengetahui karakteristik MLD dan pengaruhnya terhadap konsentrasi klorofil-a di Perairan Selat Badung, Bali. Metode pengukuran klorofil-a menggunakan spektrofotometri. Hasil penelitian menunjukkan bahwa suhu dan salinitas sebagai parameter MLD, membentuk lapisan yang homogen pada kedalaman yang bervariasi. Sebaran kandungan klorofil-a pada kedalaman MLD 12-23 m, menunjukkan nilai klorofil-a yang cenderung lebih tinggi pada permukaan perairan dibandingkan di perairan yang lebih dalam. Pada MLD kedalaman 12-60 m, menunjukkan bahwa kecenderungan kandungan klorofil-a lebih tinggi pada lapisan di kedalaman tersebut. Namun pada beberapa stasiun menunjukkan bahwa meskipun terdapat lapisan homogen yang cukup dalam, kandungan klorofil-a lebih tinggi di lapisan permukaan dibandingkan pada perairan yang lebih dalam. Kata Kunci: mixed layer depth, klorofil-a, perairan selat Badung Badung Strait characteristics is largely influenced by the ARLINDO (Indonesian Throughflow) current activity. The mixing of water masses due to the vertical movement of water masses, homogenized some range of layer (Mixed Layer Depth), whereas the value of temperature, salinity and density were about on the same range. The study was conducted to determine the characteristics of MLD and its influence on the concentration of chlorophyll-a of Badung Strait, Bali. Chlorophyll-a content was measured by using spectrophotometry method. The results showed that temperature and salinity as the MLD parameters, formed homogeneous layer (MLD) at varying depths. Distribution of MLD at depth of 12-23 m, indicating that chlorophyll-a consentration tends to be higher on the surface than at depth. In conditions at depth of 12-60 m, showed that chlorophyll-a higher on the depth, where a lot of MLD formed on the layer. However, in some stations showed that although there were quite a lot of homogeneous layer, chlorophyll-a consentration was higher on the surface than in the depth. Keywords: Mixed Layer Depth, Chlorophyll-a, Badung Strait

oai:ojs.ejournal.undip.ac.id:article/67294 2025-12-21T07:49:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/67294 2025-12-21T07:49:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 3 (2025): Ilmu Kelautan; 321-328 Lafta, Ali Abdulridha; Department of Marine Physics, Marine Science Center, University of Basrah Al-Fartusi, Adel J.; Department of Marine Physics, Marine Science Center, University of Basrah Abdullah, Sadiq S.; Department of Marine Physics, Marine Science Center, University of Basrah 2025-09-10 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/67294 Atmospheric pressure; wind regime; air temperature; climate variability; Arabian Gulf. en An understanding of climate variability in coastal regions is essential for several aspects of maritime activities in such systems. Even though fluctuations in atmospheric parameters have been widely recorded in a number of Arabian Gulf locations, such variations in the Iraq marine waters are not well understood. This study looked at the atmospheric parameters (atmospheric pressure AP, wind field, air temperature AT) measured between 2017 and 2022 off the coast of Iraq's marine water to estimate the temporal variation of these parameters. However, the results revealed that these parameters vary annually and seasonally. The limitations of AP are alternately at their peak and lowest throughout the winter and summer seasons, respectively. The maximum AP recorded during the study period was 1030.80, while the minimum AP was 989.04 mbar. The AT was at its lowest and highest during the winter and summer, respectively. Correspondingly, the winter wind speeds are lower than the summer wind speeds. Higher wind speeds are frequently caused by the shamal (northwest) wind. However, during the study period, the highest recorded wind speed was 19.9 m.sec-1. Correspondingly, AP oscillates more notably in the winter and spring and less notably in the summer and autumn, while AT oscillates more frequently and over a larger frequency range in the autumn and spring and less frequently in the summer and winter, according to our data. These results can be useful for future developments along the entire coastline of the region in terms of coastal constructions and coastal protection strategies.

oai:ojs.ejournal.undip.ac.id:article/2231 2012-02-27T12:13:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2231 2012-02-27T12:13:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 2 (2006): Jurnal Ilmu Kelautan; 106-111 Santoso, Adi; Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro E-mail: santoso_undip@yahoo.co.id Sarjito, Sarjito; Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro Djunaedi, Ali; Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2231 en Penelitian skala laboratorium untuk mengevaluasi fenomena pertumbuhan compensatory dan kualitas produk (body composition) dari nila merah (Oreochromis sp.) yang dipelihara di air laut dilakukan pada awal Juni sampai awal Agustus 2003 di Hatchery Kampus Kelautan Teluk Awur Jepara FPIK UNDIP. Benih ikan (37,74gr + SD 1,16gr) sebelumnya diaklimatisasikan pada kondisi laut dan dipelihara dalam bak-bak percobaan dengan kepadatan 5 ekor/m3. Perlakuan pemuasaan dengan 3 kali ulangan selama 4 minggu percobaan, yaitu: ikan diberi pakan setiap hari (A/kontrol); diberi pakan selama 6 hari diikuti pemuasaan 1 hari (B); diberi pakan selama 5 hari diikuti pemuasaan 2 hari (C); dan, diberi pakan selama 4 hari diikuti pemuasaan 3 hari (D). Pakan berbentuk pellet tenggelam (PT CP Prima) dengan kandungan protein 24-26%, lemak 3-5%, serat kasar 4-6%, abu 5-8% dan air 11-13%, diberikan 2 kali sehari sebanyak 5% dari biomassa. Pengamatan pertumbuhan dilakukan seminggu sekali. Analisa body composition dilakukan untuk mengukur kandungan protein, lemak, karbohidrat dan air (%). Hasil penelitian memperlihatkan bahwa tidak terjadi perbedaan dalam pertumbuhan selama percobaan; hal ini menunjukkan terjadi fenomena pertumbuhan compensatory. Tingkat pertumbuhanpada masing-masing perlakuan yaitu 7,42 gr/minggu (A); 7,18 gr/minggu (B); 3,44 gr/minggu (C); dan, 5,34 gr/minggu (D). Analisis body composition tidak menunjukkan adanya perbedaan dalam kandungan protein, lemak, karbohidrat, maupun air. Kandungan protein normal (>18%). Kandungan lemak rendah, 1,50-1,80%, diikuti kandungan air yang tinggi (>70%), yang menyebabkan tekstur daging lebih lunak. Kandungan karbohidrat 2,7-4,8%.Kata kunci: nila merah, pertumbuhan compensatory, kuantitas, kualitasThe study to evaluate both compensatory growth phenomenon occurred and the fish quality (body composition) were done under the laboratory conditions from beginning June to beginning August 2003 at the hatchery of Marine Science Teluk Awur-Jepara Campus, Diponegoro University. Red tilapias of mean weight of 37.74g+SD 1.16 g were acclimated in seawater conditions. The fish were cultured in the tank with a density of fivefish/m3 The treatments were feeding daily (A/control); fish fed 6 days–a day unfed (B); fish fed 5 days-2 days unfed; and fish fed 4 days-3 days unfed (D). The food was slowly sinking type (CP Prima) containing protein24-26%, oil 3-5%, fibre 4-6%, ash 5-8%, and water 11-13%. Feeding frequency was twice a day with 5% of the biomass. Growth was measured weekly. For fish quality analysis (body composition), it was done tomeasure the contents of protein, fat, carbohydrate, and water (%). The result showed that there was no significant difference of the growth among the fish (ANOVA); and, in turn, it suggested that the compensatorygrowth was occurred. The growth rates were 7.42 g/week (A), 7.18 g/week (B), 3.44 g/week(C), and 5.34 g/week (D). There was no difference for the contents of protein, fat, carbohydrate, and water. In general, theprotein content was above 18%.The low fat contents (1.50-1.80%) was followed by the high water contents (>70%), so that it made the flesh texture being soft. The carbohydrate contents were 2.74 to 4.8%.Key words: red tilapia, compensatory growth, quantity, quality

oai:ojs.ejournal.undip.ac.id:article/22833 2021-10-13T03:30:45Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/22833 2021-10-13T03:30:45Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 2 (2019): Ilmu Kelautan; 99-104 https://ejournal.undip.ac.id/index.php/ijms/article/download/22833/62831 Suyono, Suyono; Faculty of Fisheries and Marine Sciences, Pancasakti University Shapawi, Rossita; Borneo Marine Research Institute, Universiti Malaysia Sabah Narto, Narto; Faculty of Fisheries and Marine Sciences, Pancasakti University 2019-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/22833 green mussels; heavy metals; mangroves Directorate of Research and Community Service, the Ministry of Research and Technology; The Regional Development Planning, Research, and Development Agency of Brebes Regency en The purposes of this study are to investigate the types of different collectors and their most effective height of installation in the green mussels cultivation (Perna viridis L.) impacted by heavy metal pollution in mangrove and non-mangrove waters;  and to determine the content of heavy metals, especially Pb, Cu, Cd, and Hg in green mussels cultivation. This research was conducted from April to September 2018 in the coastal area of Karangdempel, Losari Sub District, Brebes Regency. The method used in this research was experimental. The results showed that the growth of green mussels after 6 months period of maintenance reached 7-9 cm long, weighing 10-13 grams per head and yielded 23-30 heads per collector. The most effective mussel collector was net sacks installed at a height of 30 cm from the bottom of the water. The number of mussels per collector was more in mangrove location compared to those in the non-mangrove location, while their growth in length and weight were relatively the same. Heavy metal content in seawater and in the mussel meat are still within the permissible limits of the Indonesian National Standard, except for the Cu content in the mussel exceeding the allowable limit; but it was relatively still safe accoring to the Decree of the Director General of Drug Control and Food, Indonesian Ministry of Health, No. 03725/B/SK/1989. Pb content in sediments in both location of green mussels cultivation and the Cisanggarung River basin is still within the safe limits. The content of Cd, Cu, and Hg in sediments tends to be high. Heavy metal content both in mangrove and non-mangrove areas was not different as a result of mangrove reforestation dominated by seedlings and saplings with little influence on the quality of the water ecologically and economically.

oai:ojs.ejournal.undip.ac.id:article/3660 2017-08-19T22:45:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/3660 2017-08-19T22:45:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 2 (2012): Ilmu Kelautan; 99-108 Simanjuntak, Marojahan; Pusat Penelitian Oseanografi-Lembaga Ilmu Pengetahuan Indonesia. Jl. Pasir Putih 1, Telp. 021-64713850,Jakarta 14430. Hp. 081385597038 Kamlasi, Yusuf; Politeknik Pertanian Negeri UNDANA, Kupang, NTT Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/3660 en Perairan Lamalera, Nusa Tenggara Timur merupakan perairan yang sangat penting karena kondisi oseanografinya yang dipengaruhi daratan, Laut Sawu, dan Samudera Hindia sehingga kaya akan sumberdaya laut. Penelitian oseanografi di perairan Lamalera, Nusa Tenggara Timur telah dilakukan pada bulan Juli 2011. Tujuan penelitian tersebut untuk mengkaji kualitas air ditinjau dari kandungan zat hara yang merupakan indikator kesuburan perairan serta faktor-faktor yang mempengaruhinya di perairan Lamalera, Nusa Tenggara Timur. Parameter yang diteliti meliputi fosfat, nitrat, dan silikat serta parameter kualitas air yaitu oksigen terlarut, dan keasaman (pH). Metode penelitian yang digunakan adalah pengambilan air laut dari lapisan permukaan (5 m), termoklin (15-150 m)) dan dibawah termoklin (100-300 m) pada 19 stasiun penelitian. Kadar fosfat, nitrat, dan silikat dianalisis menurut metode Strickland dan Parsons. Kadar oksigen terlarut diukur dengan menggunakan metode Winkler. Derajat keasaman (pH) diukur dengan pH meter Cyber Scan 300. Hasil yang diperoleh menunjukkan bahwa kadar zat hara pada umumnya lebih tinggi di sebelah selatan perairan ini. Kadar fosfat berkisar 0,53–5,93 μg A/l; nitrat 0,34–28,31 μg A/l, dan silikat 0,69–44,60 μg A/l. Kadar oksigen terlarut berkisar 2,30–4,90 ml/l, dan nilai pH 7,85–8,21. Parameter yang diteliti di perairan Lamalera, Nusa Tenggara Timur masih baik untuk kehidupan berbagai biota mengacu pada Baku Mutu yang telah ditetapkan oleh Kementerian Negara Lingkungan Hidup (KMNLH). Kata kunci: Kualitas air, fosfat, nitrat, silikat, Perairan Lamalera. Lamalera Waters, East Nusa Tenggara is one of the waters are very important because the condition of the affected land, Sawu Sea, and Indian Ocean, so rich in marine resources. Oceanographic research in the Lamalera Waters, East Nusa Tenggara have been carried out in July 2011. The research objective was to assess water quality in terms of the nutrients content, which is an indicator of fertility waters, and the factors influencing it in the Lamalera Waters, East Nusa Tenggara. The parameters studied include phosphate, nitrate, silicate, and water quality parameters of dissolved oxygen and acidity (pH). The research method used is by taking seawater from a layer of surface (5 m), thermocline (15-150 m), and below the thermocline (100-300 m) at 19 research stations. Levels of phosphate, nitrate, and silicate were analyzed according to the method of Strickland and Parsons. Dissolved oxygen levels were measured by using the method of Winkler. The degree of acidity (pH) was measured with pH meter Cyber Scan 300. The results obtained indicate that nutrient levels are generally higher in southern waters. Phosphate levels ranged from 0.53 to 5.93 ug A/l nitrate 0.34-28.31 ug A/l, and silicate 0.69-44.60 ug A/l. Dissolved oxygen levels ranged from 2.30 to 4.90 ml/l, and pH values from 7.85 to 8.21. Parameters studied in the Lamalera Waters, East Nusa Tenggara is still good for the life of various biota refers to the Quality Standards set by the Ministry of Environment (KMNLH). Key words: water quality, phosphate, nitrate, silicate, Lamalera Waters.

oai:ojs.ejournal.undip.ac.id:article/50593 2023-05-21T03:05:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/50593 2023-05-21T03:05:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 1 (2023): Ilmu Kelautan; 105-112 Hasibuan, Zhulian Hikmah; Master in Marine Sciences, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Widowati, Ita; Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Yudiati, Ervia; Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Syukur, Syukur; Center for Marine Science and Innovation (CMSI), School of Biological, Earth, and Environmental Science, The University of New South Wales 2023-03-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/50593 Carcinoscorpius rotundicauda; Horseshoe crab; Tachypleus gigas; Tachypleus tridentatus en Limulidae (Horseshoe crab), or Mimi in the local name, are known; there are four species, namely Limulus polyphemus in North America and Asia, namely Tachypleus tridentatus, T. gigas, and Carcinoscorpius rotundicauda. In Indonesia, these species are protected by the Decree of the Minister of Forestry Number 12/KPTS-II/1987; meanwhile, illegal fishing still occurs. This study aims to identify Limulidae species and analyze Mimi's morphometric characteristics and distribution in North Sumatra to conserve the species.  This research was conducted using a quantitative descriptive method in Leidong, Sei Berombang, Tanjung Tiram - North Sumatera, from September to December 2021. Biometric measurements were performed on 98 Mimi, and the data were statistically analyzed using the Kruskal Wallis test, Mann-Whitney test, and Multinomial logistics. The results showed that Mimi in the study area was identified as Tachypleus tridentatus, T. gigas, and Carcinoscorpius rotundicauda. The most commonly caught was T. tridentatus at the Tanjung Tiram. Based on the maximum width of the prosoma and body length, the largest to most petite sizes are T. tridentatus at Leidong (10.31 cm), T. gigas at Leidong, and Sei Berombang (10 cm) and C. rotundicauda at Sei Berombang (7.56 cm) respectively. The cluster analysis based on 27 morphometric characters showed that T. tridentatus had almost the same characteristics as T. gigas, while C. rotundicauda had its features. It can be concluded that the largest to most petite sizes of Mimi in the study area were T. tridentatus, T. gigas, and C. rotundicauda, respectively.

oai:ojs.ejournal.undip.ac.id:article/590 2012-02-27T23:57:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/590 2012-02-27T23:57:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 1 (2007): Jurnal Ilmu Kelautan; 45-52 Widada, Sugeng; Laboratorium Geologi Laut Jurusan Ilmu Kelautan Universitas Diponegoro Semarang 2010-11-22 06:13:16 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/590 id Sebagian wilayah pantai Kota Pekalongan dijumpai adanya air tanah payau yang pelamparannya semakin luas. Tujuan penelitian ini adalah untuk memetakan sebaran air tanah payau tersebut, baik pada akuifer dangkal maupun akuifer dalam dan juga untuk mengetahui penyebab keasinan air tanah tersebut. Sebaran air tanah asin dipetal<an berdasarkan nilai daya hantar listrik (DHL) dengan kriteria tingkat keasinan sebagaimana ditetapkan oleh Panitia Ad Hoc Intrusi Air Asin Jakarta. Sedangkan penyebab keasinan air tanah dianalisa berdasarkan fasies hidrokimia dengan diangram Trilinier Piper. Hasil penelitian menunjukan bahwa pada akuifer dangkal air tanah agak payau dengan DHL 1500 \iS/cm - 2.200 uS/cm dijumpai di sebelah utara, meliputi Desa Bandengan, Kandang Panjang, Panjang Wetan, Krapyak Lor, dan sebagian Degayu. Sedangkan untuk airtanah dalam seluruhnya dalam kondisi tawar dengan nilai DHL < 1500 uS/cm, kecuali sumur di Pantai Sari tergolong agak payau dengan DHL 1.602 jjS/cm. Keasinan air tanah pada akuifer dangkal disebabkan oleh proses intrusi air laut, kecuali air tanah di Kauman merupakan air fosil (connate water). Untuk akifer dalam juga tampak mulai muncul tanda-tanda intrusi air laut terutama pada wilayah bagian barat dan tengah, sedangkan di wilayah timur belum tampak adanya gejala intrusi air lautKata kunci: Daya hantar listrik, Intrusi air laut, akuiferIn the part of Pekalongan coastal region was found brackish groundwater which spreading progressively. Theaim of this research was to map the brackish groundwater, either at the shallow or deep aquifer and also toknow cause of the ground water saltiness. Briny groundwater spread was mapped based on the value ofelectric conductivity (EC) with saltiness criterion as specified by Panitia Ad Hoc Intrusi Air Asin Jakarta. Causeof saltiness of ground water was analysed base on the hydrochemical facies by Trilinier Piper diangram. Theresult of the work showed that the rather brackish groundwater at shallow aquifer which indicated by ECvalue 1500 μ S/Cm - 2.200 μ S/Cm found in the northside, covering Bandengan, Kandang Panjang, PanjangWetan, Krapyak Lor, and some of Degayu. While all of the groundwater at deep aquifer was as fresh waterwith EC value < 1500 μ S/Cm, except water at deep well in Pantai Sari categorized as rather brackish withEC 1.602 μ S/Cm. Saltiness of groundwater at shallow aquifer was cause by sea water intrusion process,except groundwater at Kauman village represent as connate water. Groundwater at deep aquifer was seenearly sea water intrusion, especially at west and middle part of researh area, while at east of area not yetseen esxistence of sea water intrusion.Key words : Electric conductivity, sea water intrusion, aquifer.

oai:ojs.ejournal.undip.ac.id:article/9935 2017-10-27T08:50:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9935 2017-10-27T08:50:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 4 (2016): Ilmu Kelautan; 177-184 https://ejournal.undip.ac.id/index.php/ijms/article/download/9935/22416 Fahrulian, Fahrulian; Bogor Agruculture University Manik, Henry M Jaya, Indra Udrekh, Udrekh; Agency For The Assessment And Application Of Technology Jl. M.H.Thamrin 8, Jakarta Indonesia 10340 2016-12-05 15:15:52 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9935 Fahrulian, Bogor Agriculture University, Departemen Marine Science and Technology id Backscatter value was a key to determine seabed characteristic. Level of intensity or backscatter informed through seabed type. One approach was use to analyze seabed type based on the value of backscatter was Angular Range Analysis (ARA). ARA utilize influence of angle backscattering intensities. The aim of this research was to determine value of backscatter from the bottom and used to initial prediction of seabed. Extraction processes of raw data obtained by acoustic signal processing techniques. Analysis of backscatter data was conducted by using K-means method to look the proximity of the centroid backscatter value against other values. Backscatter intensity from this sites ranged from -41,93 dB to -27 dB. The range value divided into three major classes based on Wenworth scale classification. Substrate type in the study site consists of sand, silt, and clay. Grain size diameter of each type include: sand 0.122713 mm (phi = 3.02), silt 0.018171 mm (phi = 5.78) and clay 0.002690 mm (phi= 8.53). Based on this result, signal processing multibeam echosounder able to classify seabed backscatter values to determine the seabed type Keywords: Angular Range Analysis, multibeam echosounder, K-Means

oai:ojs.ejournal.undip.ac.id:article/77635 2026-02-27T19:11:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/77635 2026-02-27T19:11:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 1 (2026): Ilmu Kelautan; 87-98 Soffa, Fawzan Bhakti; Research Center for Marine Aquaculture, National Research and Innovation Agency Firdaus, Muhammad; Research Center for Marine Aquaculture, National Research and Innovation Agency Sinaga, Sunarti; Research Center for Marine Aquaculture, National Research and Innovation Agency 2026-03-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/77635 Spiny lobster; Panulirus homarus; earthworm; sustainable; feed; growth; immune en Limited feed availability is one of the major challenges in scaling up lobster aquaculture in Indonesia. At present, most lobster farmers rely heavily on trash fish, mainly sardines, which are nutritionally unbalanced, compete with human consumption, and are subject to seasonal fluctuations in price and availability. This study evaluated the use of earthworms as an alternative feed for juvenile scalloped spiny lobster (Panulirus homarus), assessing their nutritional value and effects on growth, survival, and immune responses. A 63-day feeding trial was conducted with four treatments and three replicates per treatment: 100% fish (Control), 70% fish + 30% earthworm (R7C3), 30% fish + 70% earthworm (R3C7), and 100% earthworm (C10). Hemolymph samples were collected to analyze total hemocyte count (THC) and phenoloxidase (PO) activity alongside growth measurements. Lobsters fed earthworm-based diets (C10, R3C7, and R7C3) exhibited significantly higher specific growth rates (0.98–1.73%/day) compared with the control (0.42–0.59%.day-1). Survival followed a similar pattern, with markedly higher rates in earthworm-fed groups (60–75%) than in the control (~25%). Immune parameters, including THC and PO activity, were significantly elevated in lobsters receiving earthworm diets. These findings demonstrate that earthworms are a promising, sustainable feed alternative that improves growth, survival, and immunity in P. homarus, reducing dependence on trash fish in lobster aquaculture.

oai:ojs.ejournal.undip.ac.id:article/2271 2012-02-29T00:02:02Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2271 2012-02-29T00:02:02Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 3 (2005): Jurnal Ilmu Kelautan; 143-148 Suryoputro, Agus A.D.; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Semarang Nugroho, Denny; Program Studi Oseanografi, Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2271 en Penelitian ini dilakukan di wilayah Pesisir Pacitan. Tujuan dari penelitian ini untuk adalah untuk mengetahui kemampuan lahan untuk mendukung pengembangan pariwisata. Metode penelitian yang digunakan adalahinterpretasi foto udara dan pengamatan lapangan yang didasarkan pada analisis keruangan. Unit lahan digunakan sebagai satuan pemetaan untuk mengetahui kemampuan lahan untuk pariwisata dengan teknik scoring. Hasil penelitian yang diperoleh adalah lahan yang tergolong sangat baik untuk pariwisata terdapat pada unit lahan beting gisik dengan lereng datar dan digunakan untuk permukiman; unit lahan beting gisik dengan lereng datar dan digunakan untuk kebun campur; unit lahan dataran aluvial pantai dan digunakan untuk pemukiman; unit lahan dataran aluvial pantai dengan lereng datar dan digunakan untuk kebun campur; unit lahan dataran aluvial pantai dengan lereng datar dan digunakan sebagai lahan kosong; unit lahan dataran aluvial denganlereng datar dan digunakan untuk pemukiman. Lahan yang tergolong agak baik untuk pariwisata terdapat pada unit lahan dataran aluvial pantai dengan lereng datar dan digunakan untuk sawah; unit lahan dataran aluvial dengan lereng datar dan digunakan untuk sawah. Lahan yang tergolong jelek untuk pariwisata terdapat pada unit lahan dataran banjir dengan lereng datar dan digunakan untuk lahan kosong; unit lahan gisik dengan lereng datar dan digunakan untuk lahan kosong.Kata kunci : unit lahan, kemampuan lahan, pariwisataThis study was carried out at the coastal zone of Pacitan. The aim of this study was to asses land capability for tourism. The methods used in this study were aerial photo interpretation and field observation based on thespatial analysis. Land unti was used as a mapping unit, whereas scoring technique was applied to determine land capability for tourism. The result of the study showed that area which are highly suitable for tourismpurpose are located at land unit beach ridge with flat slope and land use settlement; beach ridge with flat slope and land use mixed garden; coastal aluvial palin with flat slope and land use settlement; coastal aluvial plain with flat slope and land use mixed garden; coastal aluvial plain with flat slope and land use open area; aluvial plain with flat slope and land use settlement. Moderately suitable level located on the land unit coastal aluvial plainwith flat slope and land use wetland; the area of not suitable located on the inundation plain with flat slope and land use open area; beach with flat slope and land use open area.Key words : land unit, land capability, tourism.

oai:ojs.ejournal.undip.ac.id:article/30351 2021-10-13T00:57:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/30351 2021-10-13T00:57:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 3 (2020): Ilmu Kelautan; 121-126 Faricha, Ana; Research Center for Oceanography, Indonesian Institute of Science Edrus, Isa N.; Marine Fisheries Research Center, Ministry of Marine Affairs and Fisheries Suharti, Sasanti R.; Research Center for Oceanography, Indonesian Institute of Science Utama, Rizkie S.; Research Center for Oceanography, Indonesian Institute of Science Budiyanto, Agus; Research Center for Oceanography, Indonesian Institute of Science Salatalohi, Abdullah; Research Center for Oceanography, Indonesian Institute of Science Suyarso, Suyarso; Research Center for Oceanography, Indonesian Institute of Science 2020-09-02 21:15:51 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/30351 Species compositions; benthic compositions; foraging task; coral cover; obligate en The coral reef environment has a strong influence on associated organisms such as fishes, mollusks, and others. Wherein, the butterflyfishes are marine fishes which closely associated with the tropic group as dietary specialization i.e. obligate coral feeder, facultative, and generalist. The obligate may respond only to change in preferred corals and not indicate others. However, generalist show in different response in habitat deteriorates and may allow switching feeding to a less preferred one. Many questions remain about food specific at the species level which may potentially as bio-indicator for coral conditions. Here, we studied the species composition among coral coverage. We explore the environmental degradation in Taka Bonerate National Park impact on food resources and fishes especially for butterflyfishes community. This study focused on family Chaetodontidae with UVC method and UPT method for coral cover. This study was carried out at Taka Bonerate National Park, South Sulawesi between May and June 2019. There were 342 individuals observed and dominated by Chaetodon kleinii, Hemitaurichthys polylepis, Heniochus chrysostomus, C. lunulatus, C. melannotus, C punctatofasciatus, and Forcipiger flavissimus. However, we found a site with diversity index and coral cover has across conditions. Whilst, these benthic communities mostly dominated by Acropora, which may be preferenced by specific species. Butterflyfishes have several types of foraging tasks and may impact in utilizing the coral reef and other social habitats used. The species composition and abundance of butterflyfishes had relations not only by coral coverage but also benthic compositions. However, factors that regulate its specific species distribution and species compositions are still under study.

oai:ojs.ejournal.undip.ac.id:article/58334 2024-03-31T21:48:11Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/58334 2024-03-31T21:48:11Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 1 (2024): Ilmu Kelautan; 104-118 Cintra, Allsay Kitsash Addifisyukha; Research Center for Oceanography, National Research and Innovation Agency Fitrian, Tyani; Research Center for Oceanography, National Research and Innovation Agency Novianty, Hilda; Research Center for Food Technology and Processing, National Research and Innovation Agency Jasmadi, Jasmadi; Research Center for Food Technology and Processing, National Research and Innovation Agency Department of Food and Life Science, Pukyong National University||South Korea Sjafrie, Nurul Dhewani Mirah; Research Center for Oceanography, National Research and Innovation Agency 2024-03-27 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/58334 Sipunculus; distribution; ecological; nutrient; utilization en Sipunculans, or peanut worms, are unsegmented worm-like marine organisms with distinctive trunk-like bodies. They play important roles in marine ecosystems, such as bioerosion, bioturbation, and food sources. Sipunculans are also harvested as human food in some regions worldwide. Despite their importance, a comprehensive understanding of the Sipuncula in Indonesia is still limited. This work aimed to compile a study of the distribution, ecology, and potency of Sipuncula species in Indonesian waters. The distribution of Sipuncula species in Indonesian waters was recorded from the northernmost to the easternmost part of Indonesia. So far, nineteen species have been found in Indonesian waters and are dominated by Sipunculus nudus. In Indonesia, Sipuncula exhibits a diverse range of habitats, they can be found in seagrass, mangrove and coral reef ecosystems, in both sandy and muddy sediments. Sipunculans found in Indonesia have ecosystem function as bioturbator, shell-utilizer, and coral-symbiotic species. Sipuncula also has potency as a food and nutraceutical for human health maintenance because it contains highly nutritious such as protein, carbohydrates, ash, lipids, moisture, minerals, amino acids, and fatty acids. In some areas in Indonesia, local communities use Sipuncula as a traditional food source and fishing bait. Given its significance for marine ecosystems and human livelihoods in Indonesia, future management strategies should include regulations on catch size and management practices, data collection, promotion of sustainable fishing practices, and research on Sipuncula biology and ecology. Addressing these knowledge gaps will help to ensure the sustainable use and conservation of Sipuncula in Indonesia.

oai:ojs.ejournal.undip.ac.id:article/1610 2012-02-17T22:29:46Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1610 2012-02-17T22:29:46Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 3 (2009): Jurnal Ilmu Kelautan; 126-132 Tarigan, M. Salam; Bidang Dinamika Laut Pusat Penelitian Oseanografi-LIPI, Jakart, Indonesia Telp.:+6221 64713850 Email: saltargir@yahoo.com 2012-02-05 19:29:52 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1610 id Wilayah pesisir Teluk Lada sangat padat penduduknya serta ada beberapa sungai yang bermuara ke perairan teluk ini, langsung atau tidak langsung akan mempengaruhi kacerahan air laut di perairan tersebut. Analisis Citra Aqua MODIS untuk memprediksi model pemetaan  kecerahan air laut di perairan Teluk Lada, Banten telah dilakukan pengamatan kecerahan air laut (insitu) pada 20 stasiun tanggal  22 Agustus 2004 bersamaan dengan lewatnya satelit di lokasi penelitian. Untuk pengembangan model empiris pemetaan kecerahan air laut, dilakukan analisis statistik antara data kecerahan air laut dengan  nilai digital (ND) citra satelit Aqua MODIS pada band yang digunakan.  Dengan menggunakan  persamaan regresi linier formula Y= -159.73 x + 57.845 di peroleh koefisien determinasi R2= 0.6484 (koefisien korelasi r= 0.8052) dan persamaan tersebut cukup akurat digunakan untuk pemetaan sebaran kecerahan air laut perairan Teluk Lada. Kata kunci: Prediksi, kecerahan air laut, Aqua MODIS, Teluk Lada  Coastal area of Lada Bay is densely populated with several rivers empties in to this bay waters, direct or indirect will be the influence of transparency of the waters. Analysis of Aqua MODIS image for estimated mapping algoritm transparency Lada Bay waters were carried out in   August 22, 2004 at the 20 station with Aqua MODIS Aquisisi. For the development of model mapping sea water transparency,  by statistical analysis between transparency data (insitu) with digital value of Aqua MODIS satellite image at used band. By using equation of linear regression that is Y= - 159.73 x + 57.845 obtaining its determination coefficient R2= 0.6484 (correlation coefficient r= 0.8052) and it can be used for mapping the distribution of sea water transparency at Lada Bay waters. Key  words: Estimated, transparency, MODIS Aqua, Lada Bay.

oai:ojs.ejournal.undip.ac.id:article/13359 2025-03-04T16:53:38Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/13359 2025-03-04T16:53:38Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 3 (2017): Ilmu Kelautan; 147-154 https://ejournal.undip.ac.id/index.php/ijms/article/download/13359/31153 Putra, Masteria Yunovilsa; Pusat Penelitian Oseanografi - LIPI Jl. Pasir Putih I, Ancol Timur Jakarta Utara, 11048 Hadi, Tri Aryono; Pusat Penelitian Oseanografi - LIPI Jl. Pasir Putih I, Ancol Timur Jakarta Utara, 11048 2017-08-22 13:09:26 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/13359 Research Center for Oceanography, LIPI en GC-MS analysis of the crude extracts of three different species of Indonesian marine sponges has been carried out for identification of bioactive compounds. The GC-MS analysis from Haliclona (Gellius) sp., Lamellodysidea herbacea, and Spheciospongia inconstans revealed the presence of 23, 21, 19 various compounds, respectively and mainly sterols and fatty acids. All the sponge species has been evaluated for antimicrobial activities, cytotoxicity using brine shrimp lethality bioassay and heme polymerization inhibitory activity assay for antiplasmodial activity. In this study, all the sponge species showed antimicrobial activities against at leastone of the test strains. Among them, the extract of sponge Lamellodysidea herbacea displayed activity against two Gram-positive bacteria (S. aureus and B. subtilis) and the Gram-negative bacteria V. cholerae, with inhibition zones of 10.3, 9.2 and 9.5 mm, respectively. The sponge Haliclona (Gellius) sp., showed significant activity against fungal pathogen C. albicans. The sponge Haliclona (Gellius) sp., displayed the ability to inhibit heme polymerization indicating an anti-Plasmodium function and also showed potent cytotoxic activity against the brine shrimp Artemia sp. Keywords: GC-MS analysis, antimicrobial, sponges,bioactive

oai:ojs.ejournal.undip.ac.id:article/2302 2012-03-01T08:38:13Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2302 2012-03-01T08:38:13Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 1 (2005): Jurnal Ilmu Kelautan; 1-10 Dian R, Anastasia; Lulusan Ilmu Kelautan, FPIK, Universitas Diponegoro, Semarang Hartati, Retno; Jurusan Ilmu Kelautan, FPIK, Universitas Diponegoro, Semarang Ambariyanto, Ambariyanto; Jurusan Ilmu Kelautan, FPIK, Universitas Diponegoro, Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2302 en Sand dollar (Echinoidea, Echinodermata) memiliki bentuk tubuh ireguler, pipih dan tidak mempunyai lengan. Sand dollar banyak ditemukan di daerah Intertidal, terutama pada daerah berpasir. Penelitian ini betujuan untuk mengetahui jenis Sand dollar dan karakteristik habitatnya di Pulau Cemara Besar Kepulauan Karimunjawa Jepara. Penelitian dilaksanakan pada bulan September – Oktober 2003. Analisa sampel dilaksanakan di Laboratorium Ilmu Kelautan Teluk Awur, Jepara. Metode yang digunakan dalam penelitian ini adalah metode deskriptif. Sedangkan pengambilan sampel dilakukan dengan metode survey. Walaupun hasil penelitianmenunjukkan hanya satu spesies Sand dollar yang ditemukan dalam penelitian ini yaitu Laganum laganum, namun terdapat 10 variasi corak pada permukaan aboralnya. Sand dollar yang ditemukan pada sisi barat pulau lebih banyak dibandingkan yang ditemukan pada sisi timur, hal ini diduga karena adanya perbedaan karakteristik habitat. Karakteristik habitat Sand dollar di sisi barat adalah 48% pasir berflora dengan dengan kandungan bahan organik rata-rata 3,88%. Sedangkan karakteristik habitat di sisi timur 52% hamparan pasir dengan dengan kandungan bahan organik rata-rata 2,88%.Kata kunci : Sand dollar, variasi corak, habitatSand dollar (Echinoidea, Echinodermata) have an irregular body shape, thin and they do not have any arms. These animals can be found in intertidal area with sandy bottoms. The present study aims to investigate the natural populations of Sand dollar at Cemara Besar island, Karimunjawa and its relation with its habitat. This study was done on September – October 2003, and samples were analysed at Teluk Awur Marine Laboratory, Jepara. The results showed that there was only one single species of sand dollar found in the area, i.e. Laganum laganum. Within this spesies there were 10 variation of aboral surface pattern. There was also differences on the Sand dollar abundance between west and east side of the island, where higher number of sand dollars were dound at west side os the island. It also found that the bottom habitat of west side consists of 48% sand with flora, and 3,88%. While at east side consists of 52% sand and an average of 2,88% organic content.Key words : Sand dollar, aboral surface pattern, habitat

oai:ojs.ejournal.undip.ac.id:article/36533 2021-10-13T00:51:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/36533 2021-10-13T00:51:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 2 (2021): Ilmu Kelautan; 117-124 Pambudi, Muhammad Raihan; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, Institut Pertanian Bogor Sulistiono, Sulistiono; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, Institut Pertanian Bogor Tiuria, Risa; Department of Animal Diseases and Veterinary Public Health, Faculty of Veterinary Medicine, Institut Pertanian Bogor Kleinertz, Sonja; Aquaculture and Sea-Ranching, Faculty of Agricultural and Environmental Sciences, University of Rostock 2021-06-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/36533 Anisakis; zoonoses; helminth parasites; mackerel tuna; pathogenic impacts en The study of zoonotic parasites is of extreme importance, because they can cause diseases in humans and can negatively impact the marketability of fisheries products. The present study aims to determine the infection patterns of helminth parasites infecting mackerel tuna in Banten waters, as well as to clarify possible negative impacts to its fish host. Mackerel tunas were caught from March to July 2020 in Banten Bay and Sunda Strait and obtained from Karangantu fishing port and Muara Angke fishing port. For parasite identification, different staining methods were used (KOH, Semichon’s acetocarmine). Helminth parasites that has been found in this study belonged to the taxa of Monogenea (1), Digenea (1), Nematoda (2) and Acanthocephala (2). The helminth parasite species with the highest prevalence was Hexostoma euthynni (P: 16.7%) from Banten Bay and Neorhadinorhynchus sp. (P: 53.3%) from Sunda Strait followed by a possible zoonotic parasite Anisakis sp. with 46.7% prevalence. In this study four new locality records were established. Pathogenic impacts from the isolated parasites to the examined fish could be expected, especially for the revealed H. euthynni, which may decrease the fish’s ability to perform proper respiration, cause irritation to gills, and anemia. Preventive actions on anthropogenic activities will be required in order to keep the natural conditions in the areas of Banten Bay and Sunda Strait. Regular fish parasite monitorings will lead to the sustainable use of fisheries resources, assess possible fish health impacts, and zoogeographical distributions of zoonotic and pathogenic parasites.

oai:ojs.ejournal.undip.ac.id:article/7215 2020-04-17T05:59:18Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7215 2020-04-17T05:59:18Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 1 (2014): Ilmu Kelautan; 43-54 Purwandana, Adi; Pusat Penelitian Oseanografi-LIPI, Jl. Pasir Putih I, Ancol Timur, Jakarta Utara, Indonesia 14430 Purba, Mulia; Fakultas Perikanan dan Ilmu Kelautan, Intitut Pertanian Bogor Kampus IPB Darmaga, Bogor 16680 Atmadipoera, Agus S; Fakultas Perikanan dan Ilmu Kelautan, Intitut Pertanian Bogor Kampus IPB Darmaga, Bogor 16680 2014-03-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7215 en Selat Alor merupakan kanal terdalam setelah Selat Ombai di kepulauan Alor. Kontribusinya sebagai salah satu celah keluar Arus Lintas Indonesia (Arlindo) belum banyak dikaji hingga saat ini. Selat Alor memisahkan Laut Flores dan Laut Sawu, dan memiliki sill yang tinggi di dalamnya, diduga turbulensi akibat interaksi antara aliran selat dengan topografi dasar dapat memicu percampuran dan memodifikasi properti massa air yang melaluinya. Tujuan dari penelitian ini adalah untuk mengkuantifikasi transformasi massa air yang melalui Selat Alor dan mengkaji kemungkinan percampuran di dalam selat berdasarkan estimasi sesaat properti percampuran, yakni percampuran turbulen menggunakan metode skala Thorpe. Penurunan CTD dilakukan di 15 stasiun di perairan Selat Alor. Diperoleh hasil bahwa kontur kedalaman yang menghubungkan Laut Flores dengan Laut Sawu adalah ~300 m pada kanal utama. Salinitas maksimum massa air Subtropis Pasifik Utara (NPSW) dar i Laut Flores di Selat Alor banyak mengalami reduksi akibat intensifnya percampuran yang diduga dipicu oleh topografi dasar dan aliran selat yang menghasilkan turbulensi. Lapisan salinitas maksimum Massa Air Subtropis Samudera Hindia Utara (NISW) pada σθ = 23,5-24,5 terdeteksi di bagian selatan selat (Laut sawu). Jejak massa air NISW menurun dan banyak tereduksi mendekati pintu selatan selat. Intrusi Massa Air Lapisan Menengah Samudera Hindia Utara (NIIW) juga dijumpai di lapisan bawah Laut Sawu, konsisten dengan profil arus pada lapisan bawah. Rata-rata nilai difusivitas vertikal eddy (Kρ)  di Selat Alor bagian utara memiliki orde of 10-3 m2 s-1, dan di bagian selatan memiliki orde bervariasi, 10-6-10-4 m2 s-1. Penyempitan celah Selat Alor diduga merupakan pemicu turbulensi tinggi aliran yang berkontribusi pada tingginya nilai difusivitas vertikal. Kata kunci: Arlindo, percampuran turbulen, difusivitas vertikal, Selat Alor Alor Strait is the deepest channel in Alor islands after Ombai Strait. Contribution of the strait as one of the secondary exit passages of Indonesian Throughflow (ITF) has not been studied yet. The strait separates Flores Sea and Sawu Sea, and is featured by the existence of high sill within the strait, suggested that turbulence due to interaction between strait flow and bottom topography could drive mixing and then modify the water mass properties. The purpose of this study is to investigate transformation of ITF water mass and turbulent mixing process with Thorpe scale method. A hydrographic survey has been carried out in July 2011, in which 15 CTD casts were lowered in the strait. The results show that Alor sill depth is about 300 ms in the main gate. Maximum salinity of NPSW from Flores Sea within Alor Strait is significantly reduced due to strong mixing, perhaps driven by bottom topography and strait flow which creates turbulence. NISW (Northern Indian Subtropical Water) with maximum salinity layer at σθ = 23,5-24,5 is dominant in the southern part of Alor Strait (i.e. Sawu Sea). The existence of NIIW (North Indian Intermediate Water) is also found in the deeper layer of Sawu Sea. The average value of vertical eddy diffussivity (Kρ) estimate in the thermocline layer and deep layer in northern part and central part of strait channel is within the order of 10-3 m2 s-1. Lower order of Kρ in the thermocline layer and deep layer were found in southern part of the Strait (Sawu Sea), ranging from 10-6 to 10-4 m2 s-1. These indicate that the existence of sills in the northern part and central part of Alor Strait could drive mixing significantly. Narrowing passage of Alor Strait probably contribute to the high value of vertical eddy diffusivity due to highly turbulence flow. Keywords: Indonesian Throughflow (ITF), turbulent mixing, vertical diffussivity, Alor Strait

oai:ojs.ejournal.undip.ac.id:article/63731 2024-12-23T10:10:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/63731 2024-12-23T10:10:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 4 (2024): Ilmu Kelautan; 445-455 Asuhadi, Sunarwan; Faculty of Fisheries and Marine Sciences, Hasanuddin University National Research and Innovation Agency Zainuddin, Mukti; Faculty of Fisheries and Marine Sciences, Hasanuddin University Safruddin, Safruddin; Faculty of Fisheries and Marine Sciences, Hasanuddin University Musbir, Musbir; Faculty of Fisheries and Marine Sciences, Hasanuddin University Syah, Achmad Fachruddin; Program Study of Marine Science, Department of Marine and Fisheries, Agriculture Faculty, University of Trunojoyo Madura 2024-12-11 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/63731 Chlorophyll-a outliers; ecosystem dynamics; Banda Sea; FMA 714; machine learning en Chlorophyll-a concentration is a critical indicator of marine ecosystem health, reflecting primary productivity and potential ecological changes. However, the occurrence of outlier data in the Banda Sea and its surroundings has not been sufficiently studied. This study aims to investigate the dynamics of chlorophyll-a concentration outliers in the Banda Sea, focusing on their spatial and temporal patterns from 2010 to 2022. Data were acquired from MODIS satellite imagery and analyzed using R Studio for time series decomposition, while spatial patterns were explored with ArcGIS 10.8 and Google Maps to pinpoint key hotspots of outlier activity. The findings reveal fluctuating chlorophyll-a outliers with extreme concentrations ranging from 14.39 to 81 mg·m⁻³. Temporally, these outliers are predominantly observed in the western Banda Sea during January to March and December, while in the eastern Banda Sea they occur from June to September. Spatially, these anomalies are concentrated in areas of significant human activity, particularly in Tolo Bay, suggesting a potential link between anthropogenic influences and ecological disruptions. Field monitoring in areas with persistent outliers is strongly recommended to verify actual conditions and assess their ecological impacts. While chlorophyll-a plays a vital role in marine productivity, excessive concentrations can disrupt ecosystems, potentially leading to harmful algal blooms or hypoxic conditions. This study underscores the importance of integrating remote sensing, field validation, and spatial analysis to effectively monitor and manage these anomalies. Enhanced understanding of these dynamics is critical for informed decision-making and sustainable marine management practices in the Banda Sea.

oai:ojs.ejournal.undip.ac.id:article/1838 2017-08-19T22:47:30Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1838 2017-08-19T22:47:30Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 1 (2011): Ilmu Kelautan; 1-8 Panjaitan, Pohan; Faculty of Animal Husbandry,The University of HKBP Nommensen, Jalan Sutomo No 4 Medan, Indonesia. e-mail: pohanpanjaitan@yahoo.com.au, Phone: + 62 61 4522922; Fax: +62 61 4571426; Mobile Phone: 081269371818 2012-02-11 09:46:05 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1838 en The main obstacles in developing intensive shrimp culture is waste of shrimp farms which is detrimental to environment. Mitigating the environmental impacts of effluent discharge, shrimp culture should be implemented in closed system with limited water exchange. However, the major problem associated with limited water exchange system is the rapid deterioration in pond, resulting from increasing concentration ammonia and nitrite. The addition of carbon materials such as molasses into shrimp culture with manipulating the carbon : nitrogen ratio level  is one of the best strategies of controlling ammonia and nitrite in shrimp culture with Limited Water Exchange Model (LWEM). Therefore, the principal aim of this study was to evaluate the effects of C:N ratio levels on water quality and shrimp production in Penaeus monodon shrimp culture with Limited Water Exchange Model (LWEM) using molasses as a carbon source. Study reveals that C:N ratio levels significantly effected on water quality and shrimp production parameters of shrimp culture with LWEM using molasses as carbon resource  using molasses. Key words: C: N ratio level, water quality, limited water exchange model, molasses Hambatan utama di dalam pengembangan budidaya udang intensif adalah limbah tambak udang yang merusak lingkungan. Mengurangi dampak lingkungan buangan limbah, budidaya udang seharusnya dilakukan di sistem terbuka dengan pergantian air terbatas.Namun, masalah utama yang terakit dengan system pergantian air terbatas adalah penurunan kolam cepat akibat meningkatnya konsentrasi ammonia dan nitrit. Penambahan bahan karbon contohnya molasses ke tambak dengan mengatur  level rasio karbon : nitrogen merupakan suatu stategi terbaik untuk mengontrol ammonia dan nitrite di budidaya udang dengan model pergantian air terbatas. Dengan demikian, tujuan utama studi ini adalah untuk mengevaluasi pengaruh level C:N ratio terhadap parameter kualitas air dan produksi udang di budidaya udang Penaeus monodon dengan menggunakan model pergantian air terbatas. Studi menunjukkan bahwa level C:N ratio berpengaruh nyata terhadap parameter kualitas air dan produksi udang di budidaya udang dengan model pergantian air terbatas. Kata kunci: Level rasio C:N, kualitas air, model   pergantian air terbatas, molasses

oai:ojs.ejournal.undip.ac.id:article/19351 2019-03-26T05:28:15Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19351 2019-03-26T05:28:15Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 2 (2002): Jurnal Ilmu Kelautan; 89-94 Irwani, Irwani; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Suryono, Chrisna Adhi; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Sabdono, Agus; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro 2009-06-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19351 en Salah satu cara metoda penangkapan ikan hias yang efektif adalah dengan melakuken pembiusan dengan menggunakan cyanida. Tujuan dari penelitian ini adalah untuk mengetahui toksisitas senyawa cyanida terhadap karang Porites lutea dan Galaxea fascicularis. Rancangan penelitian yang digunakan dalah split plot RAK dengan ulangan 3 kali jenis karang merupakan kelompok utama dan konsentrasi cyanide merupakan sub-kelompok. Pengamatan yang diamati adalah jumlah zooxanthellae dan proseptase kematian karang. Hasil penelitian menunjukan semakin tinggi konsentresi cyianida menunjukan semakin tinggi prosentese kematian karang. Semakin tinggi konsentrasi cyanida semakin kecil jumlah zooxanthellae pada karang.Kata kunci: cyanide, toksisitas, Porites luta dan Galaxea fascicularis   One of the methods commonly used to capture ornamental fishes is by using cyanide. The purpose of this study was to investigate the toxicity of cyanide compound on coral Porites lutea and Galaxea fascicularis. The split plot randomized block design with 3 replicate was used in the present study. While the species of corals used as the main block and the cyanide concentration as the sub-block. The study was focused on the analyzed of the number of zooxanthellae and the percentage mortality of corals. The results of the study shows that increasing cyanide concentration increased the percentage mortality of coral and decreased the number of zooxanthellae on the coral.Keywords: cyanide, toxicity, Porites lutea and Galaxea fascicularis

oai:ojs.ejournal.undip.ac.id:article/2343 2012-03-03T05:38:02Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2343 2012-03-03T05:38:02Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 4 (2004): Jurnal Ilmu Kelautan; 125-129 Wibowo, Edi; Jurusan Ilmu Kelautan –FPIK – UNDIP, Kampus Tembalang Semarang 50359, Indonesia Yudiati, Ervia; Jurusan Ilmu Kelautan –FPIK – UNDIP, Kampus Tembalang Semarang 50359, Indonesia Suryono, Suryono; Jurusan Ilmu Kelautan –FPIK – UNDIP, Kampus Tembalang Semarang 50359, Indonesia Retnowati, Tika; Jurusan Ilmu Kelautan –FPIK – UNDIP, Kampus Tembalang Semarang 50359, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2343 en Diatom Epipelik memiliki arti penting dalam sedimen mangrove karena merupakan komponen utama mikroalga yang mengandung klorofil, sehingga klorofil dalam sedimen akan mempengaruhi produktivitas primernya. Nilai kandungan klorofil -a dalam sedimen di kedalaman 2 cm berkisar antara 0,125 - 0,405 μg/cm3 menunjukkan bahwa pada kedalaman 2 cm mempunyai kandungan klorofil -a tertinggi bila dibandingkan pada kedalaman sampling 4 cm ataupun 6 cm. Untuk parameter fisika - kimia oseanografi, kondisi lingkungan memiliki kecenderungan yang normal.Kata kunci : klorofil -a, sedimen mangrove, produktivitas primer.The result showed that Epipelic Diatom have an important role in mangrove sediment, since they are known as major component of microalgae which containt chlorophy. These chlorophyll influence the level of primary productivity, within the sediment. The highest chloropyll a content within sediment was found in those taken from 2 cm deep range, compared with those taken from 4 cm and 6 cm deep.Key words : Chlorophyll -a, mangrove sediment, primary productivity.

oai:ojs.ejournal.undip.ac.id:article/45591 2022-04-06T18:18:33Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/45591 2022-04-06T18:18:33Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 1 (2004): Jurnal Ilmu Kelautan; 1-7 Khouw, Abraham Seumel; Faculty of FIsheries and Marine Science, Pattimura University Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/45591 Limpet daerah tropic; Cellana testudinaria; mortalitas en Sebanyak 2402 ekor limpet diperoleh dari 12 bulan pengambilan sampel yakni dari Oktober  2001 sampai September  2002. Rata-rata mortalitas limpet C. testudlnaria diestimasi dengan mempergunakan tiga metoda yang berbeda  dengan hasil adalah sebesar 94% per tahun (Z =2.81).  Mortalitas terbesar yang dilakukan dengan menggunakan pendekatan metoda Ault-Ehrhardt   dijumpai pada bulan Oktober 2001 dan April 2002, dimana terjadi kekeringan dan hempasan gelombang yang terbesar. Akan tetapi  tidak ada korelasi yang jetas antara mortalitas dan faktor-faktor  lingkungan. A total oF 2202 limpets were obtained  in 12 monthly collections (from October 2001 to September  2002). The mean mortality oF C. testudinaria was estimated, using three different methods;   reduction in the survival  of individual size frequency cohorts through  time, monthly calculation of the Ault  and Ehrhardt moment estimation, and length-converted catch curves. to be 94% per year  (Z = 2.81). Highest monthly mortality rates, determined with the Ault-Ehrhardt approach, were observed  in October 2001 and April  2002,  when  desiccation  stress (temperature of the rocky  surface  was about  4O0C) and  wave  action  (was about  3 m),  respectively,    were highest   However,   there  was no significant linear correlation  between  mortality and environmental   variables.

oai:ojs.ejournal.undip.ac.id:article/512 2020-10-25T22:34:12Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/512 2020-10-25T22:34:12Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 1 (2008): Jurnal Ilmu Kelautan; 1-12 Rachmayani, Rima Ningsih, Nining Sari Hardi, Safwan Brodjonegoro, Irsan S. 2010-11-11 16:04:31 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/512 id pada 4 musim menunjukkan kesesuaian dengan hasil pengamatan citra satelit ERS - SAR (ERS - Synthetic Aparture Radar) yaitu terdeteksinya keberadaan gelombang soliton di bagian utara dan selatan Selat Lombok. Amplitudo gelombang internal (soliton) sebesar 64-285 m (20-88 m) di bagian selatan, dan 50-300 m (25-81 m) di bagian utara. Panjanggelombang internal (soliton) di sisi utaraberkisar 10,9-90 km (0,9-14,6 km) dan di selatan sill 12,4-15,8 km (0,3-11,6 km). Kecepatan propagasi gelombang soliton lebih besar di bagian utara daripada di selatan, yaitu berkisar 0,21-2,67 m/det (di utara) dan 0,21-1,53 m/det (di selatan). Hasil simulasi model juga menunjukkan adanya massa air hangat yang masuk dari Samudera Pasifik melalui selat Lombok menuju Samudera Hindia dan membentuk well-developed thermal plume, yaitu sejauh 29,9-66,2 km dari sill di bagian selatan. Hal ini sesuai dengan hasil citra satelit ERS I - II pada waktu penelitian yang sama untuk masing-masing musim.Kata kuncl: non-hidrostatik, soliton, propagasi, citra satelit, thermal plume

oai:ojs.ejournal.undip.ac.id:article/9608 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9608 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 2 (2015): Ilmu Kelautan; 73-86 Salnuddin, Salnuddin; Program Studi Ilmu Kelautan, FPIK - Universitas Khairun Nurjaya, I Wayan; Departemen Ilmu dan Teknologi Kelautan, FPIK – Institut Pertanian Bogor Jaya, Indra; Departemen Ilmu dan Teknologi Kelautan, FPIK – Institut Pertanian Bogor Natih, Nyoman M N; Departemen Ilmu dan Teknologi Kelautan, FPIK – Institut Pertanian Bogor 2015-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9608 id Perhitungan konstituen harmonik pasang surut masih menggunakan metode konvensional, pengembangan metode dominan pada sistem komputasinya dan menggunakan sistem penanggalan Masehi. Penelitian ini bertujuan untuk mengetahui, apakah amplitudo konstituen harmonik yang dihitung dari pengelompokan data berdasarkan penanggalan Hijriah memberikan karakter yang relatif sama (stabil) dibulan yang sama dibandingkan dengan penanggalan Masehi. Perbandingan tersebut dilakukan pada 10 konstituen harmonik utama pasang surut, guna membandingkan perhitungan tunggang air dari nilai konstituen dan dari Metode Suku Sama (MSS). Hasil analisis data menunjukkan bahwa nilai deviasi amplitudo sangat kecil dari masing-masing konstituen harmonik pada perhitungan berdasarkan sistem kalender Hijriah, dimana amplitudo pada bulan Sya’ban relatif stabil dan lebih tinggi dibandingkan pada bulan lainnya. Nilai koefisien determinan (R2) untuk data awal pasang surut pada fase bulan baru (BB) dan bulan purnama (BP) lebih tinggi dibandingkan data awal pada fase bulan lainnya. ANOVAmenghasilkan konstituen K1dan S2terpengaruh jika data dimulai saat fase bulan kuartil I (KW1) dan purnama (BP), sedangkan saat fase awal kuartil 2 (KW2) terjadi pada konstituen P1 dan K2, MS4 dan M4. Dengan demikian, perhitungan amplitudo konstituen harmonik lebih optimum jika data dimulai saat fase bulan baru atau mengikuti penanggalan Hijriah.

oai:ojs.ejournal.undip.ac.id:article/69960 2025-06-25T07:35:55Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/69960 2025-06-25T07:35:55Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 2 (2025): Ilmu Kelautan; 213-220 Le, Dung Quang; Laboratory of Ecology and Environmental Management, Science and Technology Advanced Institute, Van Lang University Faculty of Applied Technology, School of Technology, Van Lang University, Bui, Thanh-Khiet L.; Institute for Circular Economy Development (ICED), Vietnam National University 2025-06-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/69960 fish; mercury; safety level; consumption; coastal water en Mercury (Hg) exposure in humans primarily occurs through fish consumption, making fish an important indicator of potential health risks. This study represents one of the first efforts to assess Hg levels in edible marine fish from Can Gio Mangrove Reserve (CGMR), Vietnam, providing essential baseline data for evaluating potential health risks to consumers. A total of 75 fish specimens were analyzed for mercury concentrations in their muscle tissue. Hg levels ranged from 0.02 to 0.61 mg.kg-1 dry weight, with an average concentration of 0.16 mg.kg-1 dry weight. Among the species studied, the large-eye croaker (Johnius plagiostoma) had the highest average mercury level (0.19 mg.kg-1 dry weight), followed by Reeve’s croaker (Chrysochir aureus) at 0.14 mg.kg-1, and Cynoglossus bilineatus with the lowest level at 0.12 mg.kg-1. A positive correlation was observed between mercury concentrations and body size in the large-eye croaker (R²= 0.54, P< 0.04). Despite this variation, the mercury levels in all three species were below the Provisional Tolerable Weekly Intake (PTWI) recommended by the Joint FAO/WHO Expert Committee on Food Additives (JECFA). Based on these findings, the study recommends that these fish should not be consumed more than 10 times per month, assuming a meal size of 0.227 kg, to ensure that mercury intake remains within safe limits and does not pose a health risk. The relatively low mercury levels in the fish sampled from CGMR suggest that the ecosystem is not currently a significant source of mercury contamination. However, the study highlights the importance of ongoing monitoring to detect potential changes in mercury levels, particularly in the face of increasing human activities in the region in future.

oai:ojs.ejournal.undip.ac.id:article/2221 2012-03-06T11:08:35Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2221 2012-03-06T11:08:35Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 3 (2006): Jurnal Ilmu Kelautan; 158-162 Sabdono, Agus; Department of Marine Science, Diponegoro University, Semarang – 50275, Center for Tropical Coastal and Marine Studies, Diponegoro University Tilp. (024)-7474698; E-mail: agus_sabdono@yahoo.com Radjasa, Ocky Karna; Department of Marine Science, Diponegoro University, Semarang – 50275, Center for Tropical Coastal and Marine Studies, Diponegoro University Tilp. (024)-7474698 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2221 en Black Band Disease (BBD) merupakan penyakit yang bersifat virulen terutama menyerang jenis karang batu.Meskipun komunitas bakteri BBD didominasi oleh jenis cyanobakterium, namun penelitian tentang jumlahkomposisi bakteri yang menyusun komunitas belum pernah dilakukan. Komunitas bakteri yang berasosiasi dengan penyakit BBD (black band disease) pada karang cabang Acropora sp. dalam penelitian ini diujidengan menggunakan teknik kultur dependent. Teknik molekuler gen 16S rDNA (amplifikasi 16S DNA ribosom) digunakan untuk karakterisasi komunitas secara komprehensif. Berdasarkan analisis sekuen gen 16SrDNA, data menunjukkan bahwa isolate BBD1 memiliki kekerabatan terdekat dengan Myroides odoratimimus (99.0%), isolat BBD2 adalah Bacillus algicola (99.6%) dan isolat BBD3 adalah Marine Alcaligenaceae bacteriumico (96.0%). Hasil identifikasi bakteri yang berasosiasi dengan penyakit BBD pada karang cabang Acropora sp di Karimunjawa merupakan komunitas baru yang berbeda dengan hasil penelitian terdahulu. Hasil inimemungkinkan untuk dilakukan penelitian lanjutan tentang isolasi dan kultur bakteri tersebut untuk bisa menerangkan etiologi penyakit.Kata kunci: Black Band Disease (BBD), Acropora sp., 16S rDNA.Black band disease (BBD) is a virulent disease primarily affecting scleractinian corals. Eventhough the BBD bacterial mat is dominated by a cyanobacterium, the quantitative composition of the BBD bacterial matcommunity has not described previously. The bacterial community associated with black band disease (BBD) of the branching corals Acropora sp. in this study was examined using culture-dependent techniques. Acomplementary molecular techniques of 16S rDNA genes [amplified 16S ribosomal DNA) was used to give a comprehensive characterization of the community. On the basis of the results of sequen analysis, our datashow that BBD1 isolate was closely related with Myroides odoratimimus (99.0%), BBD2 isolate was Bacillus algicola (99.6%) and BBD3 isolate was Marine Alcaligenaceae bacterium (96.0%). Of the three bacteria identified,these were not previously found in other studies. This result will allow the dominant BBD bacteria to be targeted for isolation and culturing experiments designed at interpreting the disease etiology.Key words: Black Band Disease, Acropora sp., 16S rDNA.

oai:ojs.ejournal.undip.ac.id:article/21379 2021-10-13T03:32:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/21379 2021-10-13T03:32:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 1 (2019): Ilmu Kelautan; 15-22 Putra, I Nyoman Giri; Faculty of Marine Science and Fisheries, Udayana University Putra, I Dewa Nyoman Nurweda; Faculty of Marine Science and Fisheries, Udayana University 2019-02-28 21:06:20 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/21379 Bali; Banggai cardinalfish; endemic; introduced; invasion en The demands of marine organisms for the aquarium trade are remain high and seems continue to increase. Consequently, many of marine organisms has been spread out from its natural habitat as in the case of endemic Banggai cardinalfish, (Pterapogon kauderni). That has invaded “new” habitat since it being trade in 1995. In recent years, a small populations of P. kauderni is known to be exist in a narrow bay near the Gilimanuk harbor, Bali. An underwater visual fish census survey was conducted on June 2018 to estimate the habitat types and densities of P. kauderni.  Additionally, 23 specimens of P. kauderni were collected randomly in order to assess biological parameters such as the length-weight relationship. We successfully recorded 30 groups of P. kauderni that inhabit a shallow areas with a depth range between 0.5m to 2m. Of these, more than 90% of the groups were found to be associated with sea urchin (Diadema sp.) while the rest were found to live together with branching coral (Acropora sp.) and branching sponge (Ptylocaulis sp.). Total number of fish observed during the survey were 381 individuals. The fish density is 0.76 individu.m-2. Length-weight relationship showed that P. kauderni exhibit is negative allometry (b<3) which mean that the increase in length is faster than the weight gain. Interestingly, from the 23 specimens collected, none of these were sexually mature (SL<41 mm) which may indicated that the population of P. kauderni in Bali are under serious threats of exploitation.     

oai:ojs.ejournal.undip.ac.id:article/2416 2020-04-17T05:55:47Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2416 2020-04-17T05:55:47Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 1 (2012): Ilmu Kelautan; 31-38 de Fretes, Helly; Magister Biologi, Universitas Kristen Satya Wacana, Salatiga, Jawa Tengah 50711 e-mail: jlay_43120@yahoo.com Susanto, A.B.; Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Tembalang, Semarang 50275, e-mail: abesusanto08@yahoo.com Prasetyo, Budi; Magister Biologi, Universitas Kristen Satya Wacana, Salatiga, Jawa Tengah 50711 Heriyanto, Heriyanto; Ma Chung Research Center for Photosynthetic Pigments, Universitas Ma Chung, Malang 65151, Brotosudarmo, Tatas H.P.; 3Ma Chung Research Center for Photosynthetic Pigments, Universitas Ma Chung, Malang 65151, Limantara, Leenawaty; 3Ma Chung Research Center for Photosynthetic Pigments, Universitas Ma Chung, Malang 65151, e-mail: leenawaty.limantara@machung.ac.id Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2416 en Penelitian ini bertujuan untuk mengestimasi produk degradasi pigmen ekstrak kasar alga merah Kappaphycus alvarezii (Doty) Doty varian merah, coklat dan hijau yang terbentuk selama perlakuan iradiasi dan pemanasan, melalui perbedaan spektrum serapannya. Ketiga varian diekstraksi menggunakan 100% metanol. Uji fotostabilitas ekstrak pigmen dilakukan dengan iradiasi menggunakan lampu Volpi intralux 4100 pada intensitas cahaya 39300 lux, 56700 lux dan 76400 lux.  Lama waktu penyinaran 0, 5, 10, 15, dan 20 menit. Sedangkan uji termostabilitas  dilakukan pada suhu 25 dan 90 ° C selama 0, 3, 6 24, dan 48 jam. Pola spektra diukur pada panjang gelombang 300-800 nm sebelum dan sesudah perlakuan dengan spektrofotometer UV-Tampak Shimadzu 1700. Data dianalisis dengan SPINA Versi 3, untuk memperoleh intensitas maksimum dan perbedaan spektra serapan. Hasil penelitian menunjukkan bahwa produk degradasi pigmen ekstrak kasar alga merah K. alvarezii dapat diidentifikasi melalui spektrum serapan dan hasil perbedaan spektra serapan. Isomer cis karotenoid, karotenoid tidak berwarna, dan feofitin a diestimasi sebagai produk degradasi yang terbentuk selama perlakuan iradiasi dengan intensitas cahaya 76400 lux dan perlakuan pemanasan pada suhu 90°C selama 48 jam. Penurunan intensitas warna larutan pigmen juga mengindikasikan terbentuknya produk degradasi selama perlakuan. Kata kunci: Kappaphycus alvarezii, perbedaan spektrum serapan, produk degradasi The aims of this study were to estimate the degradation products of crude pigment extracts from red, brown, and green varieties of red alga Kappaphycus alverezii (Doty) Doty that formed during irradiation and heating treatment from their difference absorption spectra. All three variants were extracted using 100% methanol. The photostability assay of crude pigment extracts was conducted by irradiating the crude pigment extracts with a day light lamp (Volpi, Intralux 4100) at 39300 lux, 56700 lux and 76400 lux light intensity during 0, 5, 10, 15, and 20 minutes treatment, whereas the thermostability assay was performed at 25 and 90 °C for 0, 3, 6 24, and 48 hours. The absorption spectra of the crude pigment extract before and after each treatment were monitored successively at 300-800 nm using MultiSpec 1501 UV-VIS spectrophotometer. Data were analyzed with spina Version 3, to obtain maximum intensity and the difference absorption spectra. The results showed that the  degradation products of crude pigment extracts from red alga K. alvarezii could be identified by absorption spectra and difference absorption spectra. Cis isomers carotenoids, colorless carotenoids, and feofitin-a were estimated as degradation product formed during the irradiation treatment with 76400 lux of light intensity and heating treatment at a temperature of 90 ° C for 48 hours. Decrease in the intensity of the color of pigment solution also indicates the formation of degradation products during treatment.Key words: Kappaphycus alvarezii, difference absorption spectra, degradation products

oai:ojs.ejournal.undip.ac.id:article/50064 2023-05-21T03:05:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/50064 2023-05-21T03:05:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 1 (2023): Ilmu Kelautan; 1-11 Kunarso, Kunarso; Department of Oceanography, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Ismunarti, Dwi Haryo; Department of Oceanography, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Rifai, Azis; Department of Oceanography, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Munandar, Bayu; Department of Oceanography, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Wirasatriya, Anindya; Department of Oceanography, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Susanto, Raden Dwi; Department of Atmospheric and Oceanic Science, University of Maryland 2023-03-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/50064 Chlorophyll-a; SST; ENSO; IOD; Central Java en Chlorophyll-a (chl-a) and Sea Surface Temperature (SST) are important indicators of air-sea interaction and primary productivity. It has been widely known that the variability of chl-a and SST in the waters of Central Java Province (CJP) is influenced by the monsoonal cycle. Previous studies did not clearly describe the variability of chl-a and SST when compared to other cycles. This present study investigated the variability of chl-a and SST influenced by monsoonal cycles, IOD, and ENSO in both CJP waters. Our analysis is based on satellite observations and uses daily data to compile climatological data. The analysis found differences between the variability of chl-a and SST during the monsoonal cycle and ENSO-IOD extreme conditions. During the monsoonal cycle, the maximum (minimum) chl-a (SST) in northern CJP is 0.7 mg.L-1 (28.5ºC) is observed in the West Monsoon, and in the southern CJP is 1.5 mg.L-1 (25.5ºC) is observed in the East Monsoon. In addition, the analysis reveals that the ENSO and IOD extremes do not clearly alter the variability of chl-a and SST in the northern CJP. However, ENSO and IOD extremes have clearly altered the variability of chl-a and SST in the southern CJP. The highest impact to variability of chl-a and SST occurred during IOD+ extreme (2019), where the range of value chl-a (SST) in south CJP is 0,35–4,57 mg.L-1 (23,29 – 30,49ºC). The value of chl-a (SST) is greater than 4 mg.L-1 (less than 24ºC) are observed in the east monsoon. It is caused by the intensity of lifting the mass of water from deeper waters to the sea surface, which possibly supplies the nutrients in the surface waters. The result of the investigation showed that the increasing of chl-a and decreasing of SST in the northern CJP dominant by monsoonal cycle and southern CJP dominant by monsoonal cycle and ENSO – IOD. 

oai:ojs.ejournal.undip.ac.id:article/581 2020-10-25T22:46:45Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/581 2020-10-25T22:46:45Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 4 (2008): Jurnal Ilmu Kelautan; 227-232 Suryanti, Suryanti 2010-11-18 06:44:35 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/581 id Makroalga merupakan makanan bagi beberapa hewan laut, tempat berlindung (nurseryground) dan tempat bertelur bagi bermacam-macam hewan laut (spawning ground). Sedangkan gastropoda memanfaatkan makroalgae sebagai salah satu sumber makanannya serta sebagai tempat berlindung. Gastropoda juga berperan dalam perkembangbiakan makroalga. Makroalgae merupakan habitat bagi beberapa macam hewan dari kelas Gastropoda seperti Strombus sp. dan Cypraea sp. Makroalgae maupun gastropoda memberikan manfaat bagi manusia sebagai bahan konsumsi atau menjadi bahan baku industri obat-obatan. Penelitian bertujuan untuk mengkaji hubungan antara struktur komunitas makroalgae dengan gastropoda di Pulau Menjangan Besar, Karimunjawa. Hasil penelitian menunjukkan bahwa terdapat 2,31 ind/m2 gastropoda dari 8 spesies yang berkorelasi dengan makroalgae. Berdasarkan substrat tempat tumbuh makroalgae, ditemukan 0,61 ind/m2 gastropoda pada pasir, 1,15 indv/m2 gastropoda pada pecahan karang, 0,51 ind/m2 dan 0,04 ind/m2 gastropoda masing-masingpada karang mati dan karang hidup. Kerapatan dan penutupan terbesar dihasilkan oleh Padina crassa yaitu 515 individu dan seluas 15,95 m2. Hasil analisis menunjukkan bahwa substrat dasar berpengaruh nyata terhadap kelimpahan makroalgae dan terdapat hubungan yang erat antara kerapatan makroalgae dengan kelimpahan gastropoda (r=0,955), penutupan makroalgae dengan kelimpahan gastropoda (r=0,990) dan frekuensi makroalgae dengan kelimpahan gastropoda (r = 0,879).Kata kunci: Makroalgae, gastropoda, substrat

oai:ojs.ejournal.undip.ac.id:article/11732 2020-04-17T06:03:18Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/11732 2020-04-17T06:03:18Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 2 (2016): Ilmu Kelautan; 93-100 Hartati, Retno Widianingsih, Widianingsih Endrawati, Hadi 2016-06-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/11732 en Transverse induced fission proven could be done in Teripang Tril, Stichopus herrmanni. This present works aimed to analyze wound recovery, regeneration period and growth of Teripang Trill  after asexual reproduction by fission using two and three fission plane. Observations were made every day until the sea cucumber body separated into two or more (depending on treatment) and reared for 16 weeks.  The results showed that there are differences in wound recovery, regeneration period and growth of S. herrmanni depend on their different fission plane. The wound recovery and regeneration period (days) of anterior, middle and posterior individu S. herrmanni resulted from two and three fission plane were varied but the two fission plane the anterior individu recover for longer period than posterior part and  the wound recover process in both end for thee fission plane was same. Average growth of anterior and posterior fragment were longer for two fission plane than three fission plane.  The middle fragment (M1 and M2) both fission plane was able to grow but very low.  It showed that three fission plane gave very slow growth in every fragment of the body. Keywords: growth, post-fission, fission plane, Stichopus herrmanni

oai:ojs.ejournal.undip.ac.id:article/71777 2026-02-27T19:11:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/71777 2026-02-27T19:11:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 1 (2026): Ilmu Kelautan; 1-7 Jaber, Munaf Qasim; Marine Science Centre, Basrah University Abbas, Muhammed Faris; Marine Science Centre, Basrah University 2026-03-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/71777 Radioactivity; SSNTDs; Radon222; specific activity; risk en In this study, samples were collected from three areas of the Iraqi marine environment, where fish are caught to be marketed to local markets for use as food. The study area includes coral reef, Khor Abdallah, as well as Um Qaser Port. Using the closed cylinder technique with Solid State Nuclear Track Detector (SSNTDs) CR-39. The concentration of Radon-222 was measured, as well as the radium equivalent, in addition to the emission per unit area and the emission per unit mass. The results are arranged by region as follows: In the Coral Reef, the lowest value was found in the bivalve Corbicula and was 14.01±4.68 Bq.m-3, while the highest concentration of Radon-222 gas isotope value was in the shrimps; 69.52±19.33   Bq.m-3 , with an average value of 28.69±9.1 Bq.m-3. In Kohr Abdallah, the lowest concentration of Radon-222 gas isotope value was found in the Laevicardium sample, it was 16 Bq.m-3 , while the highest value was in the Shrimps too, which was 61 Bq.m-3. This value is close to the value of the shrimps in the coral reef area, with the average value 37±11.2 Bq.m-3. In the Um Qaser area, the lowest concentration of Radon-222 9.93±3.76 Bq.m-3 was found in Cerithium scabridum whereas the highest value was 29.03±8.84 Bq.m-3 and found in the Anemones sample. Based on the measurements taken in this study, in which the concentration of radioactive Radon-222 isotope was calculated, it appears that the measured concentration values are within the acceptable range, and therefore the use of these samples does not pose a risk if used.

oai:ojs.ejournal.undip.ac.id:article/2262 2012-02-28T21:37:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2262 2012-02-28T21:37:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 4 (2005): Jurnal Ilmu Kelautan; 199-204 Mahasri, Gunanti; Department of Aquaqulture, Faculty of Veterinary Medicine, Airlangga University. Kampus C Unair, Jl. Mulyorejo, Surabaya. Tlp. (031) 5992785, Fax : (031) 5993015 E-mail : mahasri_gunanti@yahoo.com Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2262 en Salah satu faktor utama penyebab kegagalan panen udang windu adalah adanya serangan penyakit, yang umumnya menyerang pada tambak yang mengalami penurunan kualitas air. Ikan bandeng dapat digunakansebagai filter biologis dapat mempertahankan kualitas air, sehingga dapat menekan serangan ciliata patogen. Tujuan dari penelitian ini adalah untuk mengetahui kemampuan ikan bandeng sebagai filter biologis untuk mempertahankan kualitas air dan dapat menekan serangan ciliata patogen pada budidaya udang windu di tambak. Sampel udang windu diambil dari dua petakan, yaitu tambak dengan dan tanpa filter biologis, sebanyak 75 ekor udang diambil secara acak pada saat panen yaitu dalam waktu 100 hari. Hasil penelitian menunjukkan bahwa kulaitas air tambak dengan filter biologis lebih baik jika dibandingkan dengan dengan yang tanpa filter biologis. Prevalensi ciliata patogen pada udang windu yang dipelihara pada tambak dengan filter biologis ada 12,1 % dan 83,3 % pada tambak tanpa filter biologis, sehingga dapat diartikan bahwa filter bilogi dapat menekan prevalensi ciliata patogen dari 83,3 % sampai 12,1 %.Kata kunci : Ciliata patogen, Ikan bandeng, Filter biologisOne of the influence factor on Windu Shrimp harvesty lost is diseases, that was generally appear when the water quality descreased. The Milk Fish (Channos channos Forsk) can use as a biological filter, that can care the water quality in pond, so that the patogen ciliate can not appear.The aims of this research was to know the capacity of the biological filter of milk fish to prepare water quality and presured the ciliate appear in WinduShrimp culture in pond.The shrimp samples was taken from the two ponds with and without a biological filter. Seventy five shrimps were taken with randomly from the each pond when the shrimp harvest is one hundreddays. The result showed that the water quality is pond with the biological filter is better than in pond without the biological filter of Milk Fish. The prevalency of ciliate on the Windu Shrimp that culture with the biologicalfilter is 12,1 % and in the pond without the biological filter is 83,3 %. It’s mean that with the biological filter can pressured the ciliate prevalence from 83,3 % to 12,1 %.Key words : Ciliata patogen, Milk fish, Biological filter, Patogen, Ciliate

oai:ojs.ejournal.undip.ac.id:article/28074 2021-10-13T01:00:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/28074 2021-10-13T01:00:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 2 (2020): Ilmu Kelautan; 53-56 Nane, La; Universitas Negeri Gorontalo Paramata, Arfiani Rizki; Universitas Negeri Gorontalo 2020-05-27 21:49:13 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/28074 density; test diameter; sea urchin; overfishing; Wakatobi en Sea urchin Tripneustes gratilla is one of an economically important fisheries resource product for localities at Wakatobi archipelago. High demands for sea urchin gonad have intensified high fishing activity. The hypothesis of this study is that sea urchins in Wakatobi have been overfished. To answer that hypothesis, the density and its test diameter size were measured at two different sites. Those two sites are Pulau Tomia (resident area) and Pulau Sawa (nonresident area and very distant from the localities). The results show that sea urchin density and its test diameter are significantly different.  The densities (mean±SE) T. gratilla at Pulau Sawa and Pulau Tomia were 10±0.6 (ind.m-2) and 2.7±0.9 ind.m-2, respectively. Moreover, the test diameter at Pulau Sawa and Pulau Tomia were 69.7±2.1 mm and 58.5±1.7 mm (mean±SE), respectively. These results have shown that overfishing has occurred. Therefore, sea urchin with test diameter 66–75 mm, 76–85 mm, and 86–95 mm have disappeared at Pulau Tomia. The Conclusion reveals that fishing of sea urchin Tripneustes gratilla at Pulau Tomia has been overfished.

oai:ojs.ejournal.undip.ac.id:article/6980 2019-08-26T01:59:38Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/6980 2019-08-26T01:59:38Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 1 (2013): Ilmu Kelautan; 45-53 Pribadi, Rudhi; Jurusan Ilmu kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jl. H. Prof. Sudarto, SH, Tembalang Semarang, Indonesia. 50275. Endrawati, Hadi; Jurusan Ilmu kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jl. H. Prof. Sudarto, SH, Tembalang Semarang, Indonesia. 50275. Pratikto, Ibnu; Jurusan Ilmu kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jl. H. Prof. Sudarto, SH, Tembalang Semarang, Indonesia. 50275. 2013-03-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/6980 en Kawasan mangrove merupakan salah satu habitat ikan yang penting. Penelitian ini bertujuan untuk mengidentifikasi ikan di kawasan perairan bervegetasi mangrove Pulau Parang, Kepulauan Karimunjawa. Pengambilan contoh ikan dilakukan dengan gillnet sedangkan juvenil ikan diambil menggunakan Bonggo net dengan menyisir kolom perairan secara horizontal menggunakan perahu selama 10-15 menit pada kecepatan ±2 knot pada waktu pagi hari. Sampel ikan diawetkan dengan formalin 10% dan di laboratorium diganti dengan alkohol 70% untuk pengawetan yang lebih lama selanjutnya diidentifikasi. Kepadatan populasi ikan dihitung per stasiun dari seluruh contoh yang diamati. Contoh air diambil menggunakan water sampler, dan beberapa parameter perairan (suhu udara, suhu air, kedalaman, kecerahan, pH, DO) diukur secara langsung. Penelitian ini menemukan 7 spesies juvenil ikan di perairan bervegetasi mangrove Pulau Parang, yaitu Apogon ceramensis, Sphaeramia orbicularis, Hypoatherina barnesi, Zenarchopterus dispar, Zenarchopterus gilli, Gerres argyreus, dan Lethrinus lentjan yang termasuk dalam 5 famili, yaitu Apogonidae, Atherinidae, Hemiramphidae, Gerreidae, dan Lethrinidae. Pada saat bulan Juni ditemukan lebih sedikit jenis ikan dan jumlah individu juvenil ikan dibandingkan sampling bulan September 2012. Lebih banyak juvenil ini dimungkinkan adanya rekruitmen di daerah mangrove tersebut. Selama penelitian paling sedikit ditemukan 28 jenis ikan di perairan Pulau Parang yang terdiri dari 15 famili. Terdapat banyak perbedaan individu pada lokasi yang sama yaitu stasiun Batu Merah pada dua kali sampling. Hal ini menandakan daerah tersebut sebagai tempat mencari makan bagi ikan. Kata kunci:  ikan, mangrove, Pulau Parang, Kepulauan Karimunjawa   Mangrove ecosystem is recognised as essential habitat for many species of fishes. The study was aimed to identify community structure of mangrove fishes of Parang Island, Karimunjawa Islands. Adult fish was trapped using gillnet, while its juvenile collected using a larva-net tow horizontally by small boat for 10-15 minutes of 2knot speed along the mangrove waters in the morning. Sample was initially preserved in 10% formaldehyde then in 70% alcohol prior to further identification. Fish abundance was estimated on each station, and ambient parameter (water and air temperature, water depth, clarity, pH and DO) was measured insitu. The result shown that at least 7 species of fishes were found in Parang Island i.e.: Apogon ceramensis, Sphaeramia orbicularis, Hypoatherina barnesi, Zenarchopterus dispar, Zenarchopterus gilli, Gerres argyreus, and Lethrinus lentjan which taxonomically belongs to 5 families i.e.; Apogonidae, Atherinidae, Hemiramphidae, Gerreidae, and Lethrinidae. Less species was found in June rather in September sampling period, which possibly indicating of fish recruitmen on that mangrove ecosystem. In total 28 fish species of 15 families were found across all study sites in Parang Island and its surrounding waters. Species diversity among different sampling time, such as in Batu Merah Station, was also varied which possibly indicating that the site is feeding ground for many species in the area. Keywords: fish, mangrove, Parang Island, Karimunjawa Islands

oai:ojs.ejournal.undip.ac.id:article/2292 2012-03-01T08:43:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2292 2012-03-01T08:43:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 2 (2005): Jurnal Ilmu Kelautan; 90-97 Pranoto, Bayu A; Jurusan Ilmu Kelautan, FPIK Universitas Diponegoro, Semarang, Indonesia Ambariyanto, Ambariyanto; Jurusan Ilmu Kelautan, FPIK Universitas Diponegoro, Semarang, Indonesia Zainuri, Muhammad; Jurusan Ilmu Kelautan, FPIK Universitas Diponegoro, Semarang, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2292 en Zooplankton adalah salah satu komponen dalam rantai makanan yang diukur dalam kaitan dengan nilai produksi suatu ekosistem. Hal ini dikarenakan zooplankton berperan ganda baik sebagai konsumen satu maupun konsumen dua, dimana merupakan rantai penghubung di antara plankton dan nekton. Penelitian ini bertujuan untuk mengetahui struktur komunitas zooplankton di perairan muara Sungai Serang Yogyakarta. Metode penelitian yang digunakan adalah studi kasus. Penentuan stasiun sampling menggunakan metode pertimbangan (purposive sampling method). Pengolahan data meliputi kelimpahan, indeks keanekaragaman, indeks keseragaman, indeks dominansi, dan indeks dispersitas Morisita. Parameter perairan yang terukur suhu, salinitas, kecerahan, kecepatan arus, kedalaman, derajat keasaman (pH), DO, nitrat, dan fosfat. Hasil penelitian berdasarkan tanggal samplingdiperoleh kelimpahan rata-rata zooplankton berkisar antara 6.704-36.427 sel/L dengan indeks keanekaragaman 1,16-1,78; indeks keseragaman 0,75-0, 95; dan indeks dominansi 0,13-0,31. Sedangkan hasil penelitian berdasarkan stasiun diperoleh kelimpahan rata-rata zooplankton berkisar antara 10.952-31.669 sel/L dengan indeks keanekaragaman 1,17-1,65; indeks keseragaman 0,76-0,95; dan indeks dominansi 0,13 - 0,21.Berdasarkan hasil penelitian diperoleh hasil, bahwa genus zooplankton yang memiliki sebaran luas pada setiap stasiun (dominan) adalah genus Trigriopus, Nauplius, Pseudocalanus (Crustacea), Brachionus, Plerodina (Rotatoria). Berdasarkan hasil penelitian diperoleh kesimpulan bahwa zooplankton yang terdapat di perairan muara Sungai Serang Yogyakarta terdiri dari 6 kelas dan 21 genus. Sedangkan dilihat dari nilai indeks keanekaragaman dan keseragaman diketahui bahwa muara Sungai Serang termasuk daerah yang memiliki komunitas zooplankton yang beragam dan didominasi oleh kelas Crustacea.Kata kunci: struktur dan indeks komunitas,  zooplankton, estuarinZooplankton is one of the components in the food chain especially in relation to the production of an ecosystem. This is due to the fact that zooplankton play both as first and second consumer. The objective of this study was to investigate the community structure of zooplankton within Serang River estuary, Yogyakarta. The research was based on a case study, while sampling was done by purposive sampling method. The abundance, variety index, diversity index, dominancy index, and dispersity index were calculated based on the data collected.. The water parameter measured temperature, salinity, transparency, current velocity, pH, dissolvedoxygen, nitrate, and phospate. The result showed that based on the date of sampling the average of zooplankton abundance were ranged between 6704 - 36427 cell/L with variety index range between 1,16-1,78; diversity index were ranged between 0,75-0,95; and dominancy index were ranged between 0,13-0,31. While the results based on sampling station of the average of zooplankton abundance was range between 10.952 - 31.669 cell/L with variety index were ranged between 1,17-1,65; diversity index were ranged between 0,76-0,94; and dominancy index range between 0,13-0,21. The most common genera of zooplankton found in sampling station were Tigriopus, Nauplius, Pseudocalanus (Crustacea), Brachionus, Pterodina (Rotatoria).There were 6 classes and 21 genera of zooplankton found in the estuary of Serang River, Yogyakarta. Based on the value of the indices, it suggest that this estuary has high diversity of zooplankton and dominated by class CrustaceaKey words : structure and community indices, zooplankton. estuary

oai:ojs.ejournal.undip.ac.id:article/32675 2021-10-13T00:54:32Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/32675 2021-10-13T00:54:32Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 1 (2021): Ilmu Kelautan; 57-62 https://ejournal.undip.ac.id/index.php/ijms/article/download/32675/96382 Novianty, Hilda; Indonesian Institute of Sciences Mustafa, Emienour Muzalina; Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu Suratno, Suratno; Indonesian Institute of Sciences 2021-03-15 13:51:16 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/32675 Phaeophyceae; macroalgae; heavy metal; coastal; Malang Rapat en The use of brown-macroalgae (Phaeophyceae) as an alginate source is very broad, covering the food and non-food industry, because of that it is necessary to know the safety of these natural resources, one of which is safe from heavy metal contamination. The purpose of this study was to determine heavy metals concentrations accumulated in several types of Phaeophyceae (brown macroalgae) as an alginate source from Malang Rapat waters, Bintan. The method used was descriptive non-experimental. The determination of the location of sampling was done by purposive sampling method. Samples were taken through free collection, identified species and measured of metal contamination concentrations for As, Cd, and Pb. The data obtained were analyzed descriptively. The results showed that Phaeophyceae found in Malang Rapat waters were Turbinaria conoides, Sargassum aquifolium, Padina australis, Hormophysa cuneiformis with each metal concentration contamination of As 13.95 to 23.30 µg.g-1 dry weight; Cd from 0.33 to 1.08 µg.g-1 dry weight and Pb from 4.72 to 9.92 µg.g-1 dry weight. This study showed that all metal contamination ranges in all Phaeophyceae were on the verge of the maximum limit set by the National Standardization Agency of Indonesia Indonesian (SNI) No 7387 of 2009 and National Agency of Drug and Food Control of RI (BPOM) Regulation No 5 of 2018 for dried macroalgae product so that Phaeophyceae from Malang Rapat waters - Bintan was not safe to be used as raw material for alginate source or other processed products of brown-macroalgae.

oai:ojs.ejournal.undip.ac.id:article/7166 2017-08-19T22:43:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7166 2017-08-19T22:43:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 4 (2013): Ilmu Kelautan; 213-224 Souhoka, Jemmy; UPT. Loka Konservasi Biota Laut – Lembaga Ilmu Pengetahuan Indonesia Bitung Jln.Tandurusa No.1. Bitung, Sulawesi Utara, Indonesia. 95527 HP: 08124402063 2013-12-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7166 en Pulau Gangga terletak pada koordinat 1º46'19"N - 125º03'11" E dan merupakan salah satu pulau yang termasuk dalam perairan Kabupaten Minahasa Utara Propinsi Sulawesi Utara. Perairan pantai pulau ini didominasi oleh ekosistem terumbu karang. Perkembangan aktivitas kegiatan manusia di perairan ekosistem terumbu karang akan mempengaruhi kondisi dan keanekaragaman jenis karang batu. Tujuan penelitian ini dilakukan yaitu untuk melihat kondisi dan kenaekaragaman jenis karang batu di kawasan perairan Pulau Gangga. Penelitian tentang kondisi dan keanekaragaman jenis karang batu di perairan kawasan Pulau Gangga Sulawesi Utara telah dilakukan pada bulan Mei 2011 pada 5 (lima) stasiun penelitian yaitu Stasiun 1(Pulau Lihaga), Stasiun 2 (Gangga 1), Stasiun 3 (Pulau Tindila), Stasiun 4 (Pantai Panjang) dan Stasiun 5 (Gangga 2). Metode penelitian yang digunakan adalah transek garis (Line Intercept Transect).  Hasil penelitian ditemukan 106 jenis karang batu dari 16 famili. Kondisi karang batu berdasarkan persentase tutupan berkisar antara 24,24–73,30% dan termasuk kategori sedang sampai baik. Stasiun 1 memiliki nilai keanekaragaman jenis (H) tertinggi sebesar 1,17 dan indeks kemerataan (E) tertinggi 0,91 ditemukan di Stasiun 3. Secara umum perairan Pulau Gangga didominasi oleh karang batu sepanjang 10958 cm (kedalaman 3m) atau 43,83% dan 12.116 cm (kedalaman 6m) atau 48,46%  dari total panjang transek (25.000 cm) dengan jenis yang dominan yaitu Acropora sp. (2344 cm) atau 9,38% di kedalaman 3m dan Porites nigrecens (3751 cm) atau 15,00% pada kedalaman 6 m. Hasil penelitian ini dapat dijadikan sebagai data dasar dalam pengambilan kebijakan pengelolaan wilayah ekosistem terumbu karang oleh pemerintah daerah Sulawesi Utara. Kata kunci: kondisi, karang keras, keanekaragaman, Pulau Gangga  North Minahasa District, North Sulawesi Province) is located at 1º 46'19"N - 125º 03' 11" E. Coral reef ecosystem dominated of its coastal areas. Increasing human activities in the area was thought to influence the condition of coral reef and its diversity. This study aims to observe the condition and biodiversity of hard coral in the Gangga Island waters. This study was conducted in May 2011 at 5 (five) stations, i.e. Station 1 (Lihaga Island), Station 2 (Gangga 1), Station 3 (Tindila Island), Station 4 (Panjang Beach) and Station 5 (Gangga 2). The Line Intercept Transect (LIT) method was applied in this study. There were 106 species of hard corals consisting of 16 families found in location. The condition of hard corals was classified into middle to good, and the persentage of coverage was in between 24.24 - 73.30 %. Corals at station 1 were in the good location and they have the highest diversity index (1.17), while the highest evenness index was at Station 3 (0.91). Generally, at Gangga Island, the domination of hard coral was 10.958 cm or 43,83  % (depth 3m) and 12.116 cm or 48,46 % (depth 6m) of the total transect (25,000 cm) with coral species of Acropora sp (2.344 cm) or 9,38 % at depth of 3m and Porites nigrecens (3.751 cm) or 15 % was dominant at depth of  6m. Result of this study can be used in management coral reef ecosystem policy of the goverment of North Sulawesi. Keywords: condition, hard coral, diversity, Gangga Island

oai:ojs.ejournal.undip.ac.id:article/61688 2024-12-10T15:14:41Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/61688 2024-12-10T15:14:41Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 3 (2024): Ilmu Kelautan; 351-358 Djawad, Muhammad Iqbal; Department of Fisheries Science, Faculty of Marine Sciences and Fisheries, Hasanuddin University Tenriajeng, Muhammad Al Ghiffari; Department of Fisheries Science, Faculty of Marine Sciences and Fisheries, Hasanuddin University Trijuno, Dody Dharmawan; Department of Fisheries Science, Faculty of Marine Sciences and Fisheries, Hasanuddin University 2024-09-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/61688 embryogenesis; hatching; early life; salinity; seabass en Embryogenesis is a critical stage in the development of fish eggs, as it determines the successful hatching and survival of larvae. Understanding the effects of salinity on embryogenesis is crucial for optimizing hatchery practices and improving the production of fish larvae, such as the seabass. The purpose of this study was to map the stages of embryonic development against various salinities in order to identify the ideal salinity for seabass egg hatching. Eggs from natural spawning in a maintenance bath were used in this investigation. Four containers with salinity treatments (20 ppt, 25 ppt, 30 ppt, and 35 ppt) are used to lay fertilized eggs. The findings demonstrated that, in comparison to 20 ppt and 25 ppt treatments, eggs at 30 ppt and 35 ppt treatments generated faster embryonic development stages. Different incubation salinities have a highly substantial effect on the hatching speed of seabass eggs. Further testing revealed that the eggs hatched in 14 h and 40 min, which had the fastest seabass roe hatching time (35 ppt), and 15 h and 20 min for the 20 ppt salinity treatment. The 35 ppt salinity treatment had the highest hatchability rate (80.67%), while the 20 ppt salinity treatment had the lowest percentage (71.78%). It can be concluded that a salinity of 35 ppt provides a good embryo development response where there are no embryos that fail to develop, have the shortest hatching times of 14 h and 40 min, and produce the highest hatchability of eggs compared to other salinities.

oai:ojs.ejournal.undip.ac.id:article/1678 2017-08-19T22:48:51Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1678 2017-08-19T22:48:51Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 3 (2010): Ilmu Kelautan; 163-169 Haryati, Haryati; Fakultas Ilmu Kelautan dan Perikanan, Universitas Hasannudin Jl. Perintis Kemerdekaan Km.10, Makassar. Telp.0411-586025/Fax.586025 No. Hp. 081355406332, haryati_fikpunhas@yahoo.com Zainuddin, Zainuddin Syam, Muchlis 2012-02-08 22:36:08 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1678 id Percobaan dilakukan untuk mendeterminasi pengaruh berbagai kombinasi pakan alami terhadap penampilan reproduksi induk udang windu (Penaeus monodon Fab.) local (dari perairan Siwa) dan membandingkan potensi reproduksi induk udang windu local dengan yang berasal dari Aceh.  Pakan percobaan terdiri dari 50% cumi-cumi dan 50% cacing laut (D1), 30% cumi-cumi, 30% cacing laut dan 40% kerang (D2) , 30% cumi-cumi, 30% cacing laut dan 40% rajungan (D3) serta kombinasi antara cumi-cumi, cacing laut, kerang dan rajungan masing-masing 25% (D4). Potensi reproduksi dievaluasi berdasarkan fekunditas dan daya tetas telur, sedangkan kualitas larva dievaluasi berdasarkan tingkat kelangsungan hidup dan pertumbuhan dari stadia nauplii-1 ke stadia zoea-1. Hasil penelitian mengindikasikan bahwa  fekunditas, daya tetas dan pertumbuhan larva yang berasal dari induk yang diberi pakan kombinasi antara cumi-cumi (50%) dan cacing laut (50%) adalah yang paling tinggi, diikuti oleh cumi-cumi (30%), cacing laut (30%) dan kerang (40%).  Tingkat kelangsungan hidup larva tidak dipengaruhi oleh pakan yang pakan percobaan.  Potensi reproduksi dan kualitas larva induk udang windu local dan yang berasal dari Aceh yang diberi pakan yang sama yaitu 50% cumi-cumi dan 50% cacing laut nampak identik.Kata kunci: Induk udang windu, kombinasi pakan, penampilan reproduksi. Experiments were conducted to determined the effect of various natural diet combination on reproductive performance of local prawn (Penaeus monodon Fab.) broodstock (from Siwa waters) and  to comparing  the potential reproduction of local and Aceh prawn broodstock.  Experimental diet  consisted of 50% squid and 50% sea worm (D1), 30% squid, 30% sea worm and 40% mussels (D2), 30% squid, 30% sea worm and 40% swimming crab (D3), and combination between squid,  sea worm, mussels and swimming crab 25% for each other  (D4). The potential reproduction  were evaluated based on the fecundity and  hatchability,  and larval quality were evaluated based on survival rate and growth from nauplii-1 to zoea-1.  The research indicated that fecundity, hatchability and growth of larvae from broodstock fed combination between squid (50%) and sea worm (50%) diet was higher and following by broodstock fed combination between  squid (30%), sea worm. (30%) and mussels (40%).   Survival rate of larvae not affected by the test diets.  Identical  reproduction potential and larvae quality of local and Aceh prawn broodstock with the same food combination (50%) squid and sea worm  (50%) was showed. Key words: Black tiger broodstock,diet combination, reproductive performance.

oai:ojs.ejournal.undip.ac.id:article/19317 2019-03-26T05:29:35Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19317 2019-03-26T05:29:35Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 1 (2002): Jurnal Ilmu Kelautan; 23-26 Indarjo, Agus; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro 2008-01-08 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19317 en Abstrak Aktifitas membuat lubang dari makrofauna dasar dipengaruhi oleh kondisi fisik dan komposisi kimia sedimen. Hal ini akan sangat penting untuk pertumbuhan mikroorganisme dan meioorganisme dan juga untuk mengaduk keseluruhan bahan organik. Di dalam sedimen bioturbasi akan dipengaruhi oleh kekuatan mengaduk air dalam sedimen, kekasaran dasar. erosi velositas dan organisme lainnya Kata kunci: Bioturbasi. makrofauna, meiofauna, mikrofauna dan bahan organic Abstract Activities of burrowing benthic macrofauna are influenced by both the physical structure and the chemical composition of sediment. These factor are very important for the growth of microorganisms and meioorganisms as well as the overall turnover of organic matter. Bioturbation within the sediment will influence the shear strength, water content, bed roughness, erosion velocity and other organisms. Keywords: Bioturbation, macrofauna, meiofauna, mikrofauna dan organic matter

oai:ojs.ejournal.undip.ac.id:article/2334 2012-03-03T01:51:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2334 2012-03-03T01:51:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 4 (2007): Jurnal Ilmu Kelautan; 233-238 Desrina, Desrina; rogram Studi Budidaya Perairan, jurusan Perikanan Fakultas Perikanan dan llmu Kelautan. Universitas Diponegoro Jl. Hayam Wuruk No 4 A Semarang 50241. Telpon (024) 8311525. E-mail: desrina@undip.alumni.ac.id Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2334 en  Informasi cacing endoparasit ikan di Indonesia masih sedikit. Penelitian ini bertujuan untuk mengetahui profll cacing endoparasit ikan jeruk (Abalistes atellatus), salah satu jenis ikan konsumsi yang banyak ditangkap di perairan Pekalongan. Penelitian dilakukan dari bulan April sampai dengan Agustus 2001. Jumlah ikan jeruk yang diperiksa adalah 30 ekor, yang merupakan hasil tangkapan nelayan tradisional dan dipasarkan dalam keadaan segar di Tempat Pelelangan Ikan Batang dan Pekalongan. Pengamatan dilakukan dengan memeriksa organ organ dalam dan mata ikan satu persatu dibawah mikroskop. Parasityang ditemukan diawetkan dalam alkohol 70%. Parasit diidentirikasi pada waktu masih hidup dan setelah diawetkan. Semua ikan yang diperiksa terinfeksi cacing endoparasit. Cacing yang ditemukan terdiri atas 12 spesies Nematoda yaitu Anisakis simplex, Anisakis sp, Porrocaecum sp, Pseudoanisakis sp, Raphidascaris sp, Contracaecum sp, Camallanus sp, Procamallanus sp, Cucullanus sp, Philometra sanguinea, Philometra sp, Gnathostoma hispidium, dan I spesies Acanthocephala Acanthocephalus lucii. Parasit cacing paling banyak jenisnya ditemukan pada saluran pencernaan, diikuti oleh mesenteri dan rongga tubuh, hati, gonad dan dalam rongga mata. Prevalensi infeksi parasit yang tertinggi adalah Anisakis sp yaitu 80%. Intensitas per spesies cacing yang ditemukan relatif rendah berkisar 0,1- 5,85 ekor/ikan. Infeksi cacing tidak mempengaruhi berat gonad (r=-0,064, p<0,01) dan faktor kondisi ikan jeruk (r=0,0354, p<O,OI). jumlah cacing cendrung meningkat dengan bertambahnya berat ikan (r=0,476, p<0,05).Kata kuncl: cacing, endoparasit, ikan jeruk Information on endoparasitic helminths offish in Indonesia is very scanty. The objective of this research was to determine endoparasitic helminthes of trigger fish (Abalistes stellatus) from Pekalongan coast. A total of 30 trigger fish were examined during period April to August 2001. Fresh fish caught by traditional fishermen were obtained from Pekalongan and Batang fish auction. Each of internal organs and eyes cavity were examined for its worm under microscope. Worms found were preserved in 70% alcohol and identified alive as well as after being preserved. All offish examined were infected by worm. Parasites found consisted of 12 species of nematodes namely Anisakis simplex, Anisakis sp, Pseudoaniakis sp Porrocaecum sp, Raphidascaris sp, Contracaecum sp, Camallanus sp, Procamallanus sp, Cucullanus sp, Philometra sanguinea, Philometra sp, Gnathostoma hispidium, and I species Acanthocephala Acanthocephalus lucii. The most infected organs is alimentary tracts, followed by mesentery and body cavity, liver, gonad and eye cavity. Anisakis sp had the highest prevalence (80%). Intensity of each worm species was relatively low, range from 0,1- 5,85 worms/ fish. Worm infection did not affect the gonad weight (r=-0,064, p<0,0\) and fish condition factor (r=0,0354, p<0,01). The number of worms that infects trigger fish tended to increase as the fish weight increase (r=0,476, p<0,05). Key words : helminths, endoprasites, trigger fish

oai:ojs.ejournal.undip.ac.id:article/35689 2022-06-18T08:23:33Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/35689 2022-06-18T08:23:33Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 1 (2022): Ilmu Kelautan; 13-19 Kesaulya, Irma; Marine Science Department, Faculty of Fisheries and Marine Science, Pattimura University Rumohoira, Delta R.; Marine Science Department, Faculty of Fisheries and Marine Science, Pattimura University Saravanakumar, A.; Centre of Advanced Study in Marine Biology, Faculty of Marine Science, Annamalai University 2022-02-13 11:22:13 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/35689 Gonyaulax polygramma; Chaetoceros sp; Ambon Bay; red tide; blooming en This study examines the first occurrence of non-toxic dinoflagellate blooming of Gonyaulax polygramma and Chaetoceros sp in Ambon Bay that occurred for almost three weeks in January 2019 and it caused the watercolor became red brown. The objective of this study was to identified phytoplankton species and their abundance that cause red tide in the Inner Ambon bay.  Phytoplankton samples were collected, temperature, salinity and Secchi depth were measured simultaneously on the 11th and 21st January 2019 (nortwest monsoon) at fifteen sampling stations in Inner Ambon Bay. The results show that the maximum abundance of Gonyaulax polygramma, Chaetoceros affinis, C. danicus and C. decipiens were found in the greatest concentration up to 20×109, 9.0x106, 5.8x106 and 3.8x105 cells.L-1, respectively. They were found either in the form of a single cell or in chains. The very high abundance of cells of those species made the waters become red brown but there was no reports of fish killed during this red tide phenomena. This is the first time report of blooming phytoplankton Gonyaulax polygramma, Chaetoceros affinis, C. danicus and C. decipiens occurred in Ambon bay during the dry season where the recorded waters temperature and salinity ranged from 30-32ºC and 29-33 psu, respectively and the secchi depths ranged from 2 to 6m.

oai:ojs.ejournal.undip.ac.id:article/445 2014-12-23T07:52:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/445 2014-12-23T07:52:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 1 (2009): Jurnal Ilmu Kelautan; 6-13 Widianingsih, Widianingsih Riniatsih, Ita 2010-11-03 10:19:09 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/445 id Mikrofitobentos yang hidup di lapisan sedimen teratas dapat digunakan sebagai pengukuran produktifitas primer di subtrat dasarperairan. Kandungan klorofil-a pada lapisan sedimen teratas dapat digunakan sebagai pengukuran biomassa mikrofitobentos. Tujuan dari penelitian ini adalah untuk mendeterminasi kandungan klorofil-a mikroRtobenthos di lapisan sedimen teratas pada padang lamun perairan Teluk Awur dan Bandengan, Jepara. Hash penelitian menyatakan bahwa kandungan klorofil-a mikrofitobentos pada padang/amun perairan Teluk Awur lebih tinggi (0,940 - 1,011 mg/cm3) daripada perairan Bandengan (0,690 - 0,850 mg/cm3), namun berkebalikan dengan kerapatan lamunnya. Hal ini karena semakin tinggi nilai kerapatan padang lamun, semakln sedikit penetrasi cahayayang sampai ke lapisan substratnya sehingga akan mengakibatkan kecilnya nilai klorofil-a mikrofitobentos. Nilai kandungan klorofil-a mikrofitobentos tinggi pada wilayah padang lamun dengan kerapatan yang rendah, kandungan nutrien yang tinggi, kecepatan arus rendah dan penetrasi cafiaya yang tinggi dan sampai ke substrat dasar   Kata Kunci : Klorofil-a mikrofitobentos, Padang Lamun,  Teluk Awur, Bandengan

oai:ojs.ejournal.undip.ac.id:article/8801 2022-05-23T00:34:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8801 2022-05-23T00:34:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 4 (2014): Ilmu Kelautan; 211-218 Widanarni, Widanarni; Department of Aquaculture, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University, Jln. Agatis, Kampus IPB Dramaga Bogor 16680 Indonesia Yuhana, Munti; Department of Aquaculture, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University, Jln. Agatis, Kampus IPB Dramaga Bogor 16680 Indonesia Muhammad, Arief; Department of Aquaculture, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University, Jln. Agatis, Kampus IPB Dramaga Bogor 16680 Indonesia 2014-12-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8801 en Infectious Myonecrosis (IMN) merupakan salah satu penyakit yang sering menyerang udang vaname. Probiotik banyak digunakan pada budidaya udang karena terbukti mampu mengurangi serangan penyakit pada udang. Penelitian ini bertujuan untuk menguji pengaruh pemberian probiotik Bacillus NP5 melalui pakan terhadap kinerja pertumbuhan, respons imun, dan resistensi udang vaname terhadap infeksi Infectious Myonecrosis Virus (IMNV). Udang vaname Litopenaeus vannamei (2.41±0.07 g ekor-1) diberi pakan yang disuplementasi probiotik Bacillus NP5 dengan dosis yang berbeda, 102 CFU.g-1 (A), 104 CFU.g-1 (B), 106 CFU.g-1 (C), dan kontrol tanpa suplementasi probiotik (kontrol negatif, KN; kontrol positif, KP) selama 30 hari dan dengan tiga ulangan untuk masing-masing dosis, kemudian KP, perlakuan A, B, dan C diuji tantang secara intramuskular dengan IMNV (100 µl.ekor-1). Hasil penelitian ini menunjukkan bahwa udang vaname yang diberi pakan dengan suplementasi probiotik mempunyai laju pertumbuhan harian (LPH), rasio konversi pakan (RKP), dan respons imun yang lebih tinggi. Udang tersebut juga mempunyai total hemocyte count (THC) dan resistensi terhadap IMNV yang lebih tinggi dibandingkan kontrol positif. Konsentrasi probiotik 106 CFU.g-1 memberikan hasil terbaik dalam meningkatkan pertumbuhan, respon imun, dan resistensi udang vaname terhadap infeksi IMNV. Kata kunci: probiotik, Bacillus NP5, Litopenaeus vannamei, pertumbuhan, IMNV Infectious Myonecrosis (IMN) is one of the most prevalent white shrimp diseases. Probiotics are widely used in shrimp cultivation because they have been proven to reduce shrimp disease outbreak. This study aimed to observe the effect of oraly administered probiotic Bacillus NP5 on the white shrimp's growth performance, immune response, and resistance to Infectious Myonecrosis Virus (IMNV) infection. White shrimp Litopenaeus vannamei (2.41±0.07 g individual-1) were fed with a feed supplemented with different doses of the probiotic Bacillus NP5, i.e. 102 CFU.g-1 (A), 104 CFU.g-1 (B), 106 CFU.g-1 (C), and control without any probiotic (negative control, KN; positive control, KP) for 30 days and with three replications for each dose, then KP, treatment A, B, and C were challenged intramuscularly with IMNV (100 µl.shrimp-1). The results of the study showed that white shrimp fed with the supplemented probiotic had higher Daily Growth Rate (DGR), Feed Conversion Ratio (FCR), and immune response. They also had the higher Total Hemocyte Count (THC) and resistance to IMNV than the positive control. Probiotic with concentration of 106 CFU.g-1 gave the highest value on enhancing growth, immunity, and resistance of white shrimp towards IMNV infection. Key words: probiotic, Bacillus NP5, Litopenaeus vannamei, growth, IMNV

oai:ojs.ejournal.undip.ac.id:article/67588 2025-06-15T08:04:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/67588 2025-06-15T08:04:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 1 (2025): Ilmu Kelautan; 126-134 El-Mabrok, Mohammad; Department of Marine Science, Faculty of Science, Omar Al-Mukhtar University Alfergani, Eman Salem; Department of marine science, Faculty of Science, Omar Al-Mukhtar University Mohammed, Najlaa F.; Department of Marine Science, Faculty of Science, Omar Al-Mukhtar University Mohammed, Yahya A.; Department of Marine Science, Faculty of Science, Omar Al-Mukhtar University Muhammad, Aya I.; Department of Marine Science, Faculty of Science, Omar Al-Mukhtar University Majeed, Mariam A.; Department of Marine Science, Faculty of Science, Omar Al-Mukhtar University 2025-03-08 15:59:02 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/67588 accumulation; Metals; Fish; Ain El Ghazala lagoon; Libya en Evaluation of lead and cadmium concentrations in the muscles of four fish species: Trigla lucerna, Lithognathus mormyrus, Siganus rivulatus, Liza saliens, collected from Ain AL-Ghazala Lagoon, eastern Libya, during the summer of 2022, were analyzed by Atomic absorption spectrophotometer. The results indicated that the concentration of lead was ranged from 0.1485±0.0278 ppm in L. mormyrus to 0.2533±0.0044 ppm in L. saliens. The cadmium accumulation was ranged from 0.0004±0.000 to 0.0026±0.000 ppm in L. saliens, T. lucerna respectively. There was a significant positive correlation between the condition factor and the concentration of lead and cadmium in L. saliens and cadmium in T. lucerna. And there was a negative significant correlation between lead and cadmium in T. lucerna, while S. rivulatus and L.saliens recorded a positive significant correlation. We found a positive significant relationship between fish length and metals only in S. rivulatus (Cd; R2:0.76, Pb; R2: 0.56) and a negative significant relationship between length and cadmium in L. saliens (R2:-0.69). The estimated daily intake results for lead and cadmium ranged between 0.1056 mg.day-1 to 0.1802 mg.day-1 and 0.0002 mg.day-1 to 0.00187 mg.day-1. The mean of target hazard quotients and total target hazard quotient are below 1.00, so no adverse health effects are expected. 

oai:ojs.ejournal.undip.ac.id:article/2190 2014-07-10T17:03:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2190 2014-07-10T17:03:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 4 (2006): Jurnal Ilmu Kelautan; 221-226 Bachtiar, Tony; Oceanography Study Program, Department of Marine Science, Diponegoro University Postgraduate Program of Environmental Studies, Diponegoro University Center for Tropical Coastal and Marine Studies, Research Institute, Diponegoro University Semarang 50239, Indonesia Phone/Fax: (+62)(24) 7474698, 8453635, 7460038 Email: tonny.bachtiar@gmail.com Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2190 en Umumnya masyarakat kurang memberikan perhatian terhadap kontaminasi limbah (cair) domestik di perairan pantai perkotaan. Hal ini karena terutama karena kontaminasi limbah domestik umumnya dilaporkan tidak terdeteksi. Pemanfaatan bio-indikator untuk mendeteksi kontaminasi limbah di perairan pantai perkotaan mempunyai permasalahan karena tekanan lingkungan. Untuk dapat memahami dengan lebih baik kontaminasi limbah domestik di perairan pantai perkotaan tropis, 48 sampel sedimen permukaan dasar perairan dansampel air diambil pada musim Timur (Juli 1997) dan musim Barat (Pebruari 1998). Koprostanol, fecal sterol, telah dianalisis untuk mengetahui kontaminasi limbah domestik di perairan pantai perkotaan tropis. Analisis mencakup: a) kandungan koprostanol, b) karakteristik sedimen, dan c) coliform bacteria. Hasil analisis menunjukanbahwa pemanfaatan koprostanol dapat dengan jelas menunjukkan bahwa perairan pantai Semarang terkontaminasi limbah domestik, dimana bila menggunakan bio-indikator fecal coliform tidak terdeteksi.Kata kunci: pantai, kontaminasi, koprostanol, dan limbah domestik.Most people give less attention on sewage contamination in urban coastal waters. It is mainly because sewage contamination in coastal waters mostly was reported not detected. Using bio-indicator for detectingsewage contamination in urban coastal waters has problems because of the environmental stress. To better understand of sewage contamination in urban tropical coastal waters, 48 surface bottom sediment and watersamples of Semarang coastal waters were collected during East monsoon (July 1997) and West monsoon (February 1998). Coprostanol, a fecal sterol, had been analyzed to understand the sewage contamination inurban tropical coastal waters. The analyses included: a) coprostanol contain, b) sediment characteristics, and c) coliform bacteria. The results show that by using coprostanol it was clearly defined that Semarang coastal waters was contaminated by sewage, which by using bio-indicator, fecal coliform, could not be detected.Key words: coastal, contamination, coprostanol, and sewage.

oai:ojs.ejournal.undip.ac.id:article/19935 2021-10-13T03:40:04Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19935 2021-10-13T03:40:04Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 4 (2018): Ilmu Kelautan; 207-214 Saputra, Suradi Wijaya; Aquatic Resource Department, Faculty of Fisheries and Marine Science, Diponegoro University Solichin, Anhar; Aquatic Resource Department, Faculty of Fisheries and Marine Science, Diponegoro University Taufani, Wiwiet Teguh; Aquatic Resource Department, Faculty of Fisheries and Marine Science, Diponegoro University 2019-01-04 12:20:43 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19935 natural population; exploitation; white shrimp; banana shrimp en One of the most-caught shrimp in north coast of Central Java is Penaeus merguiensis. However, little is known on the population biology of the organisms. This study was aimed to investigate length-weight relationship, growth, length at first capture (Lc50), mortality rate, and exploitation rate of P. merguiensis in Western part of Central Java’s northern coastal waters. The study was conducted from May 2016 to July 2017 using survey method. Samples were taken for 15 times (month) from 9 coastal fishing ports. The result shows that the relationship of the carapace length and weight is negative allometry. The growth parameters of CL∞ and K were 52.5mm and 1.3 y-1 (male) and 57.25mm and 1.2 y-1 (female). Total mortality rate (Z), natural mortality rate (M), and fishing mortality rate (F) were 4.51 y-1, 1.86 y-1 and 2.65 y-1 (male), and 5.36 y-1, 1.72 y-1, and 3.64 y-1 (female), respectively. The exploitation rate (E) of male banana shrimp was 0.59, and for female shrimp was 0.68. The result shows that the exploitation level has exceeded the optimum level (E>0.5). Recruitment of P. merguiensis may occur the whole year, but it peaks were in March and August (male), April and August (female). Carapace length of first captured (CLc50) was 20.63mm (male) and 18.28mm (female). It means that the sized of captured P. merguiensis is less than the size of first mature (CLm50) or growth overfishing and as a result, disrupting the availability of adult shrimp. The condition occurs due to the size of cod-end mesh measured 0.75inc.

oai:ojs.ejournal.undip.ac.id:article/2372 2012-03-04T14:48:48Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2372 2012-03-04T14:48:48Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 2 (2004): Jurnal Ilmu Kelautan; 96-100 Rudiana, Esti; Jurusan Ilmu Kelautan, FPIK Universitas Diponegoro Semarang Pringgenies, Delianis; Jurusan Ilmu Kelautan, FPIK Universitas Diponegoro Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2372 en Setiap makhluk hidup di alam harus mempunyai strategi agar dapat lulus hidup dan strategi tersebut berbedabeda untuk setiap individu. Salah satu strategi cumi-cumi dalam mempertahankan diri dengan cara memancarkan cahaya, oleh karena itu ada beberapa jenis cumi-cumi yang memiliki organ cahaya. Tujuan penelitian ini adalah mengkaji morfologi dan anatomi cumi-cumi Loligo duvauceli yang dapat memancarkan cahaya. Pemecahan masalah dalam penelitian ini dilakukan melalui aspek cumi-cumi yang ditangkap langsung darilait Jepara dan dianalisis morfologi dan anatominya. Hasil penelitian menunjukkan bahwa jenis cumi-cumi yang memancarkan cahaya di perairan Jepara dan sekitarnya adalah Loligi duvauceli yang memiliki sepasang organ cahaya menempel pada dorso-lateral kantung tinta. Organ cahaya cumi berbentuk bulat, sebagian terdapat pada permukaan dan sebagian terbenam pada dinding kantung tinta. Organ cahaya terdiri atas lensa yang terletak pada permukaan luar kantung tinta, dan kantung organ cahaya (terbenam pada dinding kantung tinta) yang mempunyai saluran penghubung kantung dengan rongga mantelKata kunci: cumi-cumi (Loligo duvauceli), morfologi, anatomi, organ cahayaEvery organism in nature has a strategy in order to survive and that strategy may be deferent on each organism. Squids escape from predators by emitting lights; therefore, squids have to develop an organ in order to be able to emit light. Squids were collected from Jepara water and adjacent, the observation was done by analyzing of morphology and anatomy of squid. Results from identification of squids live in Jeparawaters and the adjacent is Loligo duvauceli. This species has a pair of light organs attached at the dorsalateral of the ink sac. The light organ of the squid has a rounded shape, which is partly emerge on the surfaceand the other part was submerge in the wall of the ink sac. Light organ consists of a lens situated on the outer part of the ink sac and it has a connecting canal to the mantel holeKey words : squid (Loligo duvauceli), morphology, anatomy, light organ

oai:ojs.ejournal.undip.ac.id:article/46537 2026-05-21T04:27:19Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/46537 2026-05-21T04:27:19Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 4 (2022): Ilmu Kelautan; 330-340 https://ejournal.undip.ac.id/index.php/ijms/article/download/46537/146621 Ahsin, Awaludin; Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Hartati, Retno; Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Widianingsih, Widianingsih; Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Sitorus, Erlangga D.; Faculty of Science, University of the Ryukyus Azizah, Hidayati; Faculty of Biology, National University Endrawati, Hadi; Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro 2022-12-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/46537 M. alfredi; Photo Identification; SST; Chlorophyll-a; Manta Sandy en Reef Manta rays (Mobula alfredi) is an iconic species and under the IUCN Red List of Threatened Species it is classified as vulnerable. Although the decline of population has been reported due to their very high demand and economic value especially for their dried gill plates, they are present all year round at Manta Sandy, Dampier Strait, Raja Ampat, Indonesia. The appearance of M. alfredi may affected by environmental factors. Therefore, this study was aimed to determine the sighted frequency of M. alfredi and their related environmental factors during east and west monsoon. Underwater Visual Census (UVC) and camera trap (PhotoID) method were used to observe the appearance of M. alfredi. The remotely oceanographic data, such as sea surface temperature, chlorophyll-a, sea surface current and tidal data, in the same M. alfredi observation time were obtained from the web of www.oceancolor.gsfc.nasa.gov, www.Hycom.org, Geospatial Information Agency (GIA) and then analyzed using Seadas, Excel, and ArcMap (Geographic Information System). The results showed that during the west monsoon M. alfredi appeared more often (174 sighting) than in the east monsoon (5 sighting). Those appearances were connected with slightly warmer sea surface temperature and high value phytoplankton which is related to zooplankton. For planktivorous elasmobranch, lower sea surface current and high tidal value affect the distribution of zooplankton in those area, so give high feeding opportunity for M. alfredi. High sighted M. alfredi during west monsoon in Manta Sandy attract tourists, therefore regulation for their conservation need to be implemented.

oai:ojs.ejournal.undip.ac.id:article/557 2020-10-25T22:41:35Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/557 2020-10-25T22:41:35Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 3 (2008): Jurnal Ilmu Kelautan; 159-166 Purwanti, Frida Alikodra, Hadi S. Soedharma, Dedy 2010-11-15 05:40:21 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/557 id Co-management adalah suatu pengaturan dimana tanggung jawab pengelolaan sumberdaya dibagi antara pemerintah dan pengguna. Peningkatan pemanfatan sumberdaya Taman Nasional Karimunjawa telah menurunkan kualitas sumberdaya dan jika dibiarkan akan mengancam status TNKJ. Tujuan utama studi adalah merumuskan arahan kebijakan pengembangan co-management Taman Nasional Karimunjawa dengan menganalisa kebijakan dan kelembagaan pengelolaan, mengevaluasi kapasitas pengelolaan dan mengidentifikasi faktor kunci pengembangan co-management. Studi dilakukan dari bulan April 2006 sampai Maret 2007 di Karimunjawa, Jepara menggunakan pendekatan deskriptif anaiitik. Data dianalisa secara kualitatif dengan analisis prospektif. Hasil menunjukkan adanya disharmonisasi peraturan dalam pengelolaan TNKJ dan terbatasnya kapasitas pengelolaan. Untuk itu diperlukan pengelolaan dengan co-management melalui pengaturan koordinasi yaitu pembentukan forum stakeholder dari MOU antara BTNK dan Pemerintah Kabupaten Jepara, pembuatan aturan main dalam pengelolaan dan pemanfaatan sumberdaya TNKJ, dan membuat aksi kegiatan kolaborasistrategis yang komprehensif dengan kerja sinergi stakeholders sesuai kapasitas dan kemampuannya berdasarkan prinsip-prinsip saling menghargai, saling mempercayai, sating bertanggung gugat, sating berbagi tanggung jawab dan berbagi keuntungan.Kata kunci: Co-management, Taman Nasional Karimunjawa.

oai:ojs.ejournal.undip.ac.id:article/9965 2020-04-17T06:02:02Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9965 2020-04-17T06:02:02Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 1 (2016): Ilmu Kelautan; 9-16 Setyadji, Bram; Research Institute for Tuna Fisheries Hartaty, Hety 2016-03-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9965 Research Institute for Tuna Fisheries; Commonwealth Scientific and Industrial Research Organization (CSIRO); the Australian Centre for International Agricultural Research (ACIAR); Research Institute for Capture Fisheries (RCCF) en Understanding the vertical distribution of large pelagic fish, swordfish in particular, could improve our knowledge on its fisheries strategy, management and resource conservation. However the methods often require expensive tools and resources, which probably most scientists from the development countries couldn’t afford. Thus developing model on the diel vertical movement behavior of swordfish using number of hook between float (HBF) and complete-set temperature and depth recorder (TDR) data could be an alternative. In general context, capture depth distributions are a good indicator of the natural depth distribution of the fish if the entire depth range of the species is targeted by longline gear. The proposed sinusoidal model suggested that swordfish showed a diel pattern in depth distribution, marked by remained in the surface and mixed layer waters at night and dived into deeper waters during the day. Keywords: swordfish, behavior, HBF, TDR, sinusoidal model

oai:ojs.ejournal.undip.ac.id:article/72476 2026-02-11T19:42:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/72476 2026-02-11T19:42:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 4 (2025): Ilmu Kelautan; 485-496 Sarjito, Sarjito; Aquaculture Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro Syahbana, Beta Ali; Aquaculture Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro Helmi, Muhammad; Oceanography Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro Satriya, Anindya Wira; Oceanography Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro Wetchayont, Parichat; Disaster Management Program, Faculty of Science and Health Technology, Navamindradhiraj University Ariyati, Restiana Wisnu; Aquaculture Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro 2025-12-20 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/72476 West Nusa Tenggara; Moyohilir Waters; Water Suitability; Rabbitfish; Geospatial en Rabbitfish (Siganus sp.) is an economically valuable fishery commodity widely consumed in eastern Indonesia, with increasing demand for animal protein. Indonesia’s rabbitfish production rose steadily from 13.6 million tons in 2011 to 22.6 million tons in 2016 but declined after 2017, reaching 21.8 million tons in 2021. Most of this production came from capture fisheries, with only a small portion from the aquaculture sector. To address the declining production, sustainable farming development is essential to improve the stability of rabbitfish supply. The waters of Moyohilir, Sumbawa Regency, exhibit strong potential for rabbitfish cultivation. However, a comprehensive site suitability assessment is essential before initiating aquaculture activities. This study utilized Geographic Information Systems (GIS) to analyze spatial suitability for floating net cage systems. Primary water quality data, namely temperature, salinity, pH, dissolved oxygen, brightness, nitrate, phosphate, and seabed type, were collected from 40 purposively selected sampling points. Secondary data on current speed and water depth were obtained from 2023 bathymetric and wind speed datasets. All parameters were analyzed geospatially using ArcGIS version 10.8. The results revealed three suitability classes: Less Suitable (39.98%; 479.86 ha), Moderately Suitable (48.38%; 595.4 ha), and Suitable (12.64%; 155.57 ha). Based on this assessment, 10% of the Moderately Suitable and Suitable areas, equivalent to 75.1 ha, are recommended for cultivation. This area has the potential to produce up to 117.55 tons of rabbitfish per cycle, supported by 830 floating net cage units, assuming a 60% survival rate.

oai:ojs.ejournal.undip.ac.id:article/2253 2012-02-28T11:41:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2253 2012-02-28T11:41:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 1 (2006): Jurnal Ilmu Kelautan; 23-30 Rochaddi, Baskoro; Laboratorium Geologi Kelautan, Jurusan Ilmu Kelautan, FPIK UNDIP Semarang, Indonesia Pratikto, Ibnu; Laboratorium Geologi Kelautan, Jurusan Ilmu Kelautan, FPIK UNDIP Semarang, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2253 en Perencanaan untuk pengelolaan kawasan pesisir memerlukan batasan dan deskripsi mengenai kawasan daratan pesisir yang jelas. Permasalahan yang ada di Indonesia pada umumnya dan Kota Semarang pada khususnya adalah belum ditetapkannya batas wilayah pesisir baik untuk perencanaan maupun operasionalnya, sehingga sampai sekarang wilayah daratan pesisir masih diperlakukan sama seperti wilayah daratan lainnya. Maka dari itu penelitian untuk mencari batas daratan pesisir,  sangat penting dilakukan di Kota Semarang. Penelitian ini bertujuan untuk menentukan batas wilayah daratan pesisir di Kota Semarang dengan pendekatan biofisik. Penelitian lapangan dilakukan pada tanggal 21 Agustus -30 September 2004. Penelitian dilakukan di wilayah Kota Semarang, meliputi tiga sungai yaitu Sungai Plumbon, Sungai Banjir Kanal Barat, dan Sungai Banjir Kanal Timur. Adapun data intrusi air asin pada akuifer air tanah dangkal berdasarkan penelitian yang dilakukan pada tahun 2000. Materi penelitian meliputi parameter biologi (makrozoobenthos, fitoplankton, dan mangrove) dan parameter fisik (jangkauan masuknya air laut di sungai, intrusi air laut pada akuifer dangkal, kajian teoritis geologi). Dari hasil analisis kedua parameter tadi, maka selanjutnya dapat ditarik batas wilayah daratan pesisir di daerah Kota Semarang. Hasil dari tumpang tindih peta berdasarkan parameter jangkauan masuknya air laut di sungai, intrusi air laut pada air tanah dangkal, makrozoobenthos, fitoplankton dan mangrove menunjukkan bahwa batas daratan pesisir Kota Semarang secara biofisik untuk Semarang bagian barat adalah 1,7 -2,2 Km dari garis pantai, Semarang bagian tengah 1,9 -3,5 Km dari garis pantai dan untuk Semarang bagian timur 2,4 -4,8 Km dari garis pantai.   Kata kunci: batas biofisik, daratan pesisir, Semarang The delineation and description of coastal land are needed in coastal planning and management. The main problem in Indonesia especially in Semarang is the delineation for planning and operation unsettled yet. Until now coastal land still treated like others land region. Because of that the research to seek the delineation of coastal land is very important to be done. The objective of this research is to determine delineation of coastal land in Semarang by biophysical approach. The research was conducted in August 21st -September 30th 2004 in Semarang including 3 rivers which are Plumbon River, Banjir Kanal Barat River, and Banjir Kanal Timur River. The data of intrusion sea water in unconfined aquifer is based on the research in 2000. The materials of these researches were biology parameters such as (macrozoobenthos, Phytoplankton and mangrove) and physical parameters (intrusion of sea water in river, intrusion of sea water in unconfined aquifer and study of theoretical geology). Base on analysis of the parameters can be determining the delineation of coastal land in Semarang. The results of over lay map based on intrusion of sea water in river, intrusion of sea water in unconfined aquifer, macrozoobenthos, phytoplankton and mangrove parameters shows that delineation of coastal land in west part of Semarang was 1, 7 -2.2 Km from coastal line, central part of Semarang was 1, 9 -3, 5 Km from coastal line, east part of Semarang was 2, 4 -4, 8 Km from coastal line. Key words: biophysical delineation, coastal land, Semarang

oai:ojs.ejournal.undip.ac.id:article/23227 2021-10-13T01:07:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/23227 2021-10-13T01:07:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 4 (2019): Ilmu Kelautan; 186-194 Melianawati, Regina; Institute Mariculture Research and Fisheries Extension Slamet, Bejo; Institute Mariculture Research and Fisheries Extension 2019-12-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/23227 blacksaddled coralgrouper; biological; egg; larvae; growth en Blacksaddled coralgrouper, Plectropomus laevis, is an endangered species of marine fish. As part of conserving their existence in the wild, culture of this species has been started. However, knowledge of biological parameters of this species as important indicators to observe the fish growth in mariculture scale, is limited. The purpose of this study was to observe biological parameters during eggs, larval to juvenile stage of blacksaddled coralgrouper in mariculture hatchery. The eggs were obtained from natural spawning of domesticated broodstocks. Larvae rearing was done in hatchery at three different times as replicates. Larval were fed with zooplankton which consist of rotifers Brachionus sp., wild copepods and Artemia. Artificial feed was also given to the fish larvae. Larval samples were taken one Day After Hatching (DAH), then continued every 5 days started at 5 to 45 DAH by using five larvae each sampling time. The observed parameters were diameter of eggs and oil globule, total length and standard length of larvae length of dorsal and pelvic fin spines of larvae. Furthermore, growth pattern of those length parameters was analysed by regression equation. The result showed that diameter of blacksaddled coralgrouper eggs was 835.19±15.29 µm, while oil globule was 177.78±10.30 µm. The growth patterns of larval total length and standard length were exponential, while dorsal and pelvic fin spines were polynomial. The length of time from larvae to achieve juvenile stage was range between 45-50 days. All of these information can be used as references either in larvae rearing or for further study of the fish.

oai:ojs.ejournal.undip.ac.id:article/5132 2017-08-19T22:45:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/5132 2017-08-19T22:45:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 4 (2012): Ilmu Kelautan; 183-189 Rumahlatu, Dominggus; Program Studi Pendidikan Biologi, FKIP Universitas Pattimura, Jl. Dr. Tamaela Ambon. Indonesia. Telp/Fax. 0911-312343 HP. 081343007114 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/5132 en Kadmium (Cd) dikenal sebagai logam berat nonesensial bagi tubuh dan dapat mempengaruhi berbagai aktivitas biota laut, seperti aktivitas makan dan pertumbuhan. Penelitian ini dilakukan untuk mengkaji aktivitas makan dan pertumbuhan bulu babi Deadema setosum akibat paparan Cd selama 4 minggu. Selain itu, dilihat juga bioakumulasi Cd pada gonad dan usus D. setosum yang diteliti melalui paparan logam berat Cd pada air laut. Pola akumulasi Cd yang terkandung dalam gonad dan usus dianalisa dengan menggunakan Atomic Absorbsion Spectrofotometer (AAS). Hasil perhitungan pola akumulasi Cd pada usus dan gonad menunjukkan pola yang sama, dimana Cd semakin meningkat selama fase akumulasi, berturut-turut mulai dari pengamatan hari ke 7, 14, 21, dan 28, yakni sebesar 0.08, 0.16, 0.21, 0.32 ppm untuk usus dan 0.06, 0.11, 0.16, dan 0.30 ppm untuk gonad. Selain itu, hasil pengamatan aktivitas makan berdasarkan lamanya waktu makan D. setosum pada bak perlakuan dengan konsentrasi Cd 1.0, 6.0, dan 12.0 μg/L menunjukkan bahwa D. setosum lebih banyak diam, sedikit melakukan aktivitas makan, dan rentang waktu makannya semakin lama, namun pada bak dengan konsentrasi Cd 1.0 < 6.0 < 12.0. Hal ini mengindikasikan bahwa aktivitas makan D. setosum dipengaruhi oleh adanya akumulasi Cd yang berakibat pada perlambatan pertumbuhannya.Kata kunci: logam berat, kadmium, aktivitas makan, pertumbuhan, Deadema setosumCadmium (Cd) is known as a nonessential heavy metal for the body and can affect a variety of marine activities, such as feeding activity and growth. This research was conducted to assess the feeding activity and growth of the sea urchin Deadema setosum exposure to Cd for 4 weeks. In addition, the views also bioaccumulate Cd in gonads and intestine D. setosum studied through exposure to heavy metals Cd in sea water. Cd accumulation patterns contained in the gonads and intestines analyzed using Atomic Absorbsion Spectrofotometer (AAS). The results of the calculation of the accumulation pattern of Cd in the gut and gonad showed a similar pattern, where Cd has increased during the accumulation phase, respectively, starting from the observation days 7, 14, 21, and 28, ie at 0.08, 0.16, 0.21, 0.32 ppm for intestine and 0.06, 0.11, 0.16, and 0.30 ppm for gonads. In addition, observations feeding activity based on the length of time to eat D. setosum the bath treatment with Cd concentrations of 1.0, 6.0, and 12.0 μg/L showed that D. setosum more silent, less feeding activity, and the longer the feeding period, but in the tank with Cd concentrations 1.0<6.0<12.0. This indicates that the D. setosum feeding activity influenced by the presence of Cd accumulation resulting in its deceleration of growth.Key words: heavy metal, cadmium, eating activity, growth, Deadema setosum

oai:ojs.ejournal.undip.ac.id:article/53903 2023-12-27T19:14:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/53903 2023-12-27T19:14:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 4 (2023): Ilmu Kelautan; 301-312 https://ejournal.undip.ac.id/index.php/ijms/article/download/53903/173236 Nuryanto, Agus; Faculty of Biology, Jenderal Soedirman University Bhagawati, Dian; Faculty of Biology, Universitas Jenderal Soedirman Winarni, Elly Tuti; Faculty of Biology, Universitas Jenderal Soedirman Mahmoud, Hanan Hassan Alsheikh; College of Natural Resources and Environmental Studies, Department of Fisheries Science, University of Bahri 2023-12-06 06:51:33 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/53903 barcoding; diversity; fish larvae; fisheries management; seabream en Morphological identification often fails to reveal the taxonomic status of fish larvae. DNA barcoding using particular DNA segment is frequently successful in solving the faulty and might reveal overlooked species, including species outside their recognized geographic ranges, such as Eastern Atlantic seabream Sparus aurata. This study aims to assess fish larvae diversity in Teluk Penyu Beach, Cilacap Central Java, Indonesia, through the cytochrome c oxidase 1 barcoding. Fish larvae were collected using a larva net with a diameter of 60 cm and height of 150 cm and horizontal towing during the field trips in March and April 2021. Larvae morphotypes were determined based on their general morphological performance observed under a magnification lens according the available references. Eighteen larvae morphotypes were successfully barcoded, and 5% genetic distance was used as a species border. Fourteen fish larvae species were revealed, with intraspecific genetic distances between 0.00% and 4.12%, while intrageneric genetic distances ranged from 5.50% to 19.29%. An interesting finding was that one larva morphotype was barcoded as S. aurata with high genetic identity (99.19% to 99.68%) and low genetic distance (0.32% to 0.81%). The discovery provides the first new data on S. aurata in Teluk Penyu Beach Cilacap, Central Java, outside its recognized geographic range. Overall, this study provides information about fish larvae in Teluk Penyu Beach, essential for estimating the number and species of fish recruited in the southern Cilacap, which is vital for fisheries management. Nevertheless, new research requires further clarification of S. aurata in Teluk Penyu Beach.

oai:ojs.ejournal.undip.ac.id:article/1419 2017-08-19T22:49:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1419 2017-08-19T22:49:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 2 (2010): Ilmu Kelautan; 66-76 Pratiwi, Rianta; Pusat Penelitian Oseanografi-LIPI. Jln. Pasir Putih 1, Ancol Timur, Jakarta 14330. Tel/fax: 021.64715038, 021.64711848. Hp. 08129680994. E-mail: r_pratiwi_99@yahoo.com 2012-02-01 05:50:53 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1419 id Penelitian ini bertujuan untuk melihat interaksi fauna krustasea yang berassosiasi dengan ekosistem padang lamun. Penelitian dilakukan dengan menarik jaring menggunakan beach seine dan koleksi bebas menyusuri pantai. Data yang diambil dari penelitian ini adalah data krustasea dan data pendukung  lingkungan (suhu, pH dan salinitas). Analisa data meliputi kepadatan krustasea, indeks keranekaragaman (H’), keseragaman (E), dominansi (C), pola penyebaran (indeks morisita) dan asosiasi krustasea dengan habitatnya (lamun). Hasil penelitian menunjukkan parameter lingkungan perairan di habitat lamun relatif baik untuk kehidupan krustasea dan lamun. Hasil Beach Seine diperoleh 310 individu krustasea yang terdiri dari 15 suku dan 57 jenis. Kepadatan krustasea di setiap lokasi berbeda-beda. Pola penyebaran krustasea cenderung lebih banyak mengelompok daripada acak. Indeks keseragaman cukup tinggi yang menggambarkan bahwa penyebaran individu relatif sama. Indeks dominansi pada penelitian ini termasuk rendah. Stasiun-stasiun tertentu memiliki kesamaan parameter suhu, pH, salinitas dan jenis krustaseanya. Dengan diperolehnya data keanekaragaman dan pola sebaran krustasea di ekosistem lamun pengamatan secara periodik perlu dilakukan karena krustasea merupakan salah satu rantai makanan dalam ekosistem dan dapat dimasukkan sebagai kriteria bagi konsep kebijakan pengelolaan kawasan pesisir Teluk Lampung. Kata kunci : Krustasea, asosiasi, keanekaragaman, padang lamun, Teluk LampungThis aims of this study is to see the interactions of crustacean fauna that live associated in seagrass beds. The study was conducted by using a Beach Seine net and free collection along the coast. Analyzed data from crustaceans and data of environmental parameters (temperature, pH and salinity). The data analysis included the density of crustaceans, diversity index (H'), similarity index (E), dominance index (C), the pattern of spread (index morisita) and crustaceans associated with habitat (seagrasses). The results from Beach Seine obtained 310 individual crustaceans consisting of 15 family and 57 species. The results showed the water environmental parameters in seagrass habitats are relatively good for the life of crustaceans and seagrass. Crustacean density at each location is different. The pattern of spread of crustaceans tend to be more clumped than random. Similarity index high enough to illustrate that the distribution of the individual were relatively the same. Dominance index was low in this research. Certain stations have the same parameters of environmental conditions (temperature, pH and salinity) and the species of  crustacean. By obtaining data diversity and distribution patterns of crustaceans in seagrass ecosystems more rightly should be periodically examined, because crustacean is one of the food chain in the ecosystem. Thus, this aspect should be included as a criterion for the concept of coastal area management policies in Lampung Bay. Key words: Crustacea, association, diversity, seagrass beds, Lampung Bay.

oai:ojs.ejournal.undip.ac.id:article/13207 2021-10-13T05:40:04Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/13207 2021-10-13T05:40:04Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 2 (2017): Ilmu Kelautan; 93-98 Setyati, Wilis Ari; Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Zainuddin, Muhammad; Aquaculture, Faculty of Science and Tecnology, Nahdlatul Ulama Islamic University. Renta, Person Pesona; Marine Science Study Program, Faculty of Agriculture, University of Bengkulu 2017-06-06 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/13207 en Application of bacteria in bioremediation of shrimp culture ponds is one of the methods used to clean internal pollutants. This study aimed to evaluate the pathogenicity of extracellular proteolytic enzyme produced by the probiotic bacteria as bioremediation bacteria on vannamei shrimp larvae culture. There were five probiotic bacteria, which were successfully isolated from the sediments served as substrate in mangrove area. The isolated bacteria were coded in number as 13, 19, 30, 33, and 36. Pathogenic bacteria Vibrio harveyi was used as positive control. Pathogenic assay was carried out in two different bacterial concentrations, i.e. 10⁸ and 10⁶ cells.mL-1. The results showed that the lowest survival rate (SR) of shrimp larvae in positive control V. harveyi was 53 and 65%. Whereas isolates with the highest SR value (100%) were obtained from bacteria coded as 13 and 30. Isolates no. 19, 33 and 36 had SR of more than 90%. Total plate count (TPC) data showed that the bacteria increased significantly at the end of the study with an average increase value of 24%. The smallest TPC value was shown by bacterial isolate no. 19, while the largest was obtained from the isolate no. 13. These results suggest that all probiotic bacteria were not pathogenic to the vannamei shrimp larvae. Keywords: aquaculture, shrimp, bioremediation, pathogenesis, vibrio.

oai:ojs.ejournal.undip.ac.id:article/31978 2022-05-19T09:28:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/31978 2022-05-19T09:28:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 4 (2020): Ilmu Kelautan; 157-164 Febrianessa, Nadya; IPB University Sulistiono, Sulistiono; IPB University Samosir, Agustinus Mangaratua; IPB University Yokota, Masashi; Tokyo University of Marine Sciences and Technology 2020-11-24 10:10:54 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/31978 Blue swimming crab; heavy metals; bio-concentration factors en Increasing number of industries and settlements in Banten Bay were subsequently followed by an increase in the amount of waste, whether in the form of solid, liquid or gas that can pollute the environment. One of the toxic pollutants is heavy metal.The entry mechanism of the heavy metal Mercury (Hg) and Lead (Pb) in body of the crab (Portunus pelagicus), namely through the process of digestion food. This study was conducted for 6 months, from March to August 2019, and aimed to analyze the heavy metal content levels (Pb and Hg) and the safe consumption level of the blue swimming crab (Portunus pelagicus) in the waters. The heavy metal concentration in the meat was measured through the AAS (Atomic Absorption Spectrophotometer) AA 7000 series Shimadzu. The analysis showed that the Pb and Hg contained in the blue swimming crab were still under the quality standards. Also, the bio-concentration factors of the blue swimming crab were low (<100).  Water quality data observed as temperature, salinity, TSS, pH, dissolved oxygen, turbidity, and transparency stayed in the range of tolerable limits for the survival of marine organisms. Maximum weekly intake calculation refers to the tolerable limits issued by the Joint FAO/WHO Expert Committee on Food Additives (JECFA). The JECFA recommends calculating the PTWI of each heavy metal if it accumulates in the human body for methyl mercury 1.6 μg.kg bw.week-1 and for lead not exceed 25 μg.kg bw.week-1. The safety consumption level of blue swimming crab from Cengkok Coastal water was 2.3 kg of meat.week-1 (for adults) and 0.6 kg of meat.week-1 (for children).

oai:ojs.ejournal.undip.ac.id:article/7091 2017-08-19T22:43:57Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7091 2017-08-19T22:43:57Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 3 (2013): Ilmu Kelautan; 165-171 D.O., Sutjipto; Jurusan Pemanfaatan Sumberdaya Perikanan dan Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Brawijaya, Jl. Veteran Malang. Indonesia 65145 Soemarno, Muhammad S; Jurusan Pemanfaatan Sumberdaya Perikanan dan Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Brawijaya, Jl. Veteran Malang. Indonesia 65145 Marsoedi, Marsoedi; Jurusan Pemanfaatan Sumberdaya Perikanan dan Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Brawijaya, Jl. Veteran Malang. Indonesia 65145 2013-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7091 en Pendugaan kuantitatif atas ukuran populasi ikan sangat diperlukan dalam pengembangan dan pengelolaan sumber daya ikan. Pemanfaatan sumber daya ikan dapat dilakukan secara optimal apabila sediaan (stock) dan sebaran sumber daya ikan tersebut diketahui secara pasti sehingga langkah kebijakan eksploitasi dapat dilakukan dengan tepat tanpa membahayakan kelestariannya. Penelitian ini bertujuan menganalisa dinamika populasi dan tingkat eksploitasi Ikan Kurisi (Nemipterus hexodon) dari Selat Madura. Penelitian ini dilakukan pada bulan Februari-Desember 2010. Kajian terhadap biologi dan dinamika populasi Ikan Kurisi dilakukan dengan mengumpulkan data sebaran frekuensi panjang (LF), panjang total (TL, Total Length), berat tubuh (W, Weight), jenis kelamin, dan tingkat kematangan gonad (TKG) dan dianalisa dengan hubungan panjang berat, pertumbuhan (panjang maksimum, umur dan kecepatan pertumbuhan), yield/recruit (Y/R) dan biomass/recruit (B/R). Hasil penelitian menunjukkan bahwa hubungan panjang berat  W = 0,05 L2,47. Nisbah kelamin jantan dan betina adalah 1:1,178. Nisbah matang gonad Ikan Kurisi terjadi pada bulan Februari dan Oktober. Lm = 16,42 cm  dan ada 7 bulan dalam satu tahun Lc<Lm. Parameter dengan persamaan pertumbuhan von Bertanlanffy L∞=30 cm, k=0.4, to= -0,001. Laju Eksploitasi (E) saat ini 0,48 > E0,5 (0,311). Hasil penelitian ini memberikan gambaran bahwa laju eksploitasi ikan Kurisi di Selat Madura harus dikurangi 35 % untuk menjaga kecukupan  spawning biomass. Kata kunci: ikan kurisi, dinamika populasi, eksploitasi, Selat Madura   Quantitative estimation over the size of fish populations is needed in the development and management of fish resources. Utilization of fish resources can be performed optimally when the stocks and the distribution of fish resources is known that the exploitation policy can be done properly without endangering its sustainability. This study aimed to investigate the length-weight relationship of ornate threadfin bream (Nemipterus hexodon), the growth parameters (maximum length, age and growth rate), yield/recruit (Y/R) and biomass/recruit (B/R) of threadfin bream and the level of exploitation. The research was conducted in the Madura Strait in February-December of 2010. The biology and some aspects of population dynamics were studied. Length weight relationship W= 0.05 L2.47. Male and female sex ratio 1: 1.178. The mature fish gonad ratio of threadfin bream occurred in February and October. Lm= 16.42 cm and there were 7 months of the year Lc <Lm. Growth equation parameters by von Bertanlanffy L∞= 30 cm, k= 0.4, to= -0,001. The exploitation rate (E) was 0.48 > E0,5 (0.311). The results of this study suggest that the exploitation rate should be reduced to 35% to maintain adequate spawning biomass of the fish at Madura Strait. Keywords : threadfin bream, population dynamics, exploitation, Madura Strait

oai:ojs.ejournal.undip.ac.id:article/52235 2024-12-10T15:14:41Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/52235 2024-12-10T15:14:41Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 3 (2024): Ilmu Kelautan; 293-300 Hidayat, Rahmadi; Geological Engineering Department, Faculty of Engineering, Gadjah Mada University Barianto, Didit Hadi; Geological Engineering Department, Faculty of Engineering, Gadjah Mada University Surjono, Sugeng Sapto; Geological Engineering Department, Faculty of Engineering, Gadjah Mada University Ali, Che Aziz; Department of Geology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia 2024-09-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/52235 amino acid racemization; Benthic foraminifera; Ammonia beccari en Sub-milligram fossil biominerals, mainly benthic foraminifera, have been recently used to estimate the age of sediments determined from amino acid dating due to the minimum sample size requirement for reverse-phase high-performance liquid chromatography (RP-HPLC). This includes the collection of Ammonia sp., known as a key species occupying restricted lagoonal environments. However, an experiment has not been conducted to understand the racemization kinetics in order to examine the reliability of this species for amino acid racemization (AAR) geochronology. This research aims to determine the trend of the extent of racemization and the amino acid concentration, leading to the recommendation of Ammonia sp. shells as a dating specimen. The results exhibit a predictable pattern, demonstrating a consistently increasing extent of racemization after oven heating for up to 168 h without any indication of reversal pattern. The racemization rate differs from four selected amino acids reported in this study, where aspartic acid is the fastest, followed by glutamic acid, valine and isoleucine epimerization. Moreover, the consistent proportion of total amino acid and the decline of amino acid concentrations can be clearly observed following exponential decay. Therefore, this foraminifer can be used as an alternative specimen to establish amino acid-based geochronology, particularly in the depositional environment lacking other microfossils. Due to its confined habitat, amino acid-based dating of Ammonia sp. is considered applicable to understand the small environmental changes related to marginal marine successions.

oai:ojs.ejournal.undip.ac.id:article/1624 2014-12-30T01:00:58Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1624 2014-12-30T01:00:58Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 4 (2009): Jurnal Ilmu Kelautan; 197-206 Jamili, Jamili; Jurusan Biologi, FMIPA, Universitas Haluoleo Kendari, Sulawesi Tenggara 93232 Hp.085241767959, jamili66@yahoo.com Setiadi, Dede; Departemen Biologi, FMIPA, Institut Pertanian Bogor Qayim, Ibnul; Departemen Biologi, FMIPA, Institut Pertanian Bogor Guhardja, Edi; Departemen Biologi, FMIPA, Institut Pertanian Bogor 2012-02-06 07:13:24 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1624 id Penelitian ini bertujuan untuk menganalisis, menguraikan struktur, dominasi vegetasi mangrove, zonasi, dan permudaan alami di Pulau Kaledupa Taman Nasional Wakatobi. Sampling vegetasi menggunakan metode transek garis dan metode plot. Data vegetasi mangrove diperoleh melalui pengamatan dari setiap plot. Untuk strata pohon, tiang dan sapihan, parameter yang diamati meliputi nama spesies, jumlah individu masing-masing spesies, dan ukuran diameter batang setinggi dada. Sedangkan untuk strata semai dihitung jumlah cacah individu masingmasing spesies. Data periode dan tinggi penggenangan pada saat air pasang, diukur pada  plot pengamatan setiap hari selama 30 hari. Dominasi vegetasi mangrove ditentukan dengan parameter nilai penting, zonasi dengan parameter kerapatan relatif, dan permudaan alami vegetasi  mangrove dianalisis  dengan menggunakan nilai kerapatan total semai setiap plot pengamatan. Hasil penelitian menemukan bahwa komunitas mangrove di Pulau Kaledupa pada strata pohon didominasi oleh spesies Bruguiera gymnorrhiza, strata tiang didominasi oleh spesies Rhizophora mucronata, dan pada strata sapihan dan semai didominasi oleh spesies Ceriops tagal. Zonasi  mangrove di Pulau Kaledupa terdiri atas empat  zona, yaitu Zona R. mucronata, R. apiculata, Ceriops tagal, dan C.decandra. Tinggi penggenangan air laut merupakan faktor pengendali terjadinya zonasi mangrove di Pulau Kaledupa. Spesies C.tagal dan C.decandra memiliki tingkat permudaan alami baik, sedangkan spesies R. mucronata, R.apiculata, B.gymnorrhiza, Xylocarpus granatum, Sonneratia alba, dan Avicennia marina memiliki permudaan secara alami rendah. Kata kunci: Vegetasi mangrove, zonasi, struktur, komposisi  This research was aimed to describe the structure, dominance of mangrove vegetation, zonation,  and natural regeneration at Kaledupa Island of Wakatobi National Park. Sampling of vegetation used line transect and plot methods.  Data of mangrove vegetation was obtained through observation of each plot at all growth phases (trees, poles, sapling and seedling) covering species name, number of individual of each species, and size of the breast height diameter of stem. Data of water inundation at high tide was measured at each observation plot. Observation was conducted for 30 days. Dominance of mangrove vegetation was determined by importance value parameter, zonation by relative density parameter and natural regeneration by seedling density. Results of this research found that mangrove community at Kaledupa Island at trees stratum were dominated by species Bruguiera gymnorrhiza, poles stratum was dominated by species Rhizophora mucronata, and at sapling and seedling stratum were dominated by species Ceriops tagal. Mangrove zonation at Kaledupa Island consisted of four zones, that are R. mucronata, R. apiculata, C. taga, and C. decandra zone. Height of seawater inundation is controlling factor of formation of mangrove zonation at Kaledupa Island. Species C. tagal  and C. decandra had high level of natural regeneration, while species R.mucronata, R. apiculata, B. gymnorrhiza, Xylocarpus granatum, Sonneratia alba, and Avicennia marina had low natural regeneration. Key words : mangrove, zonation, structure, composition

oai:ojs.ejournal.undip.ac.id:article/17095 2021-10-13T03:59:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/17095 2021-10-13T03:59:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 1 (2018): Ilmu Kelautan; 25-36 Kumari, Radha Karuna; Department of Ocean Studies and Marine Biology, Pondicherry University Mohan, P. M.; Department of Ocean Studies and Marine Biology, Pondicherry University 2018-03-03 15:31:33 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/17095 Indian Institute of Tropical Meteorology – Ministry of Earth Sciences (IITM-MoES), Pune en Quantification the Dissolved and Particulate organic carbon in marine waters is an essential step towards ecosystem modeling and understanding carbon sequestration processes. A detailed view of estimated and recorded carbon concentration from Arctic to Antarctic is the prime goal of this review. This review compiles some of the important research work carried out in quantifying the organic carbon available in off shore and open waters and in coral reef environment. The cited literatures were collected, grouped and carefully analyzed to give a comprehensive view on current status of marine environment with regard to distribution of dissolved and particulate organic carbon. Keywords: DOC, POC, continental shelf waters, open sea waters, coral reef environment.

oai:ojs.ejournal.undip.ac.id:article/2325 2012-03-02T20:33:46Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2325 2012-03-02T20:33:46Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 3 (2007): Jurnal Ilmu Kelautan; 173-180 Sarjito, Sarjito; Laboratorium Parasit dan Penyakit, Jurusan Perikanan Fakultas perikanan dan ilmu Kelautan Universitas Diponegoro Semarang Radjasa, Ocky Karna; Pusat Kajian Pesisir dan Laut Tropis Universitas Diponegoro Hutabarat, Sahala; PS. Manajemen Sumberdaya Perairan , FPIK Universitas Diponegoro Prayitno, Slamet B; Laboratorium Parasit dan Penyakit, Jurusan Perikanan Fakultas perikanan dan ilmu Kelautan Universitas Diponegoro Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2325 en The research aims were to find out the causative agent vibriosis of Cromileptis altivelis  having clinical symptom red mouth and its pathogenecity to Epinephelus fuscoguttatus.   Seven isolats Vibrio were isolated from wound and kidney of  C.  Altivelis.  The result of Koch postulate indicated that five vibrios as a causative agent of vibriosis, consisted of three vibrios (isolat JT 07,   JT 10, JT 20) and  two vibrios (isolat JT 4,  JT 29) caused  mortality of 100% and 40% on E. fuscogutatus respectively.  Three isolat vibrios ( JT 7,   JT 10, JT 20 ) with higher pathogenicity were continued to futher investigation.  Mean time to death of  V. fuscus (JT 07), V. alginolyticus and V. anguillarum, to E. fuscogutatus  on concentration of 108 CFU/mL  were 83,33%  (11,25 hours); 79,16%(15,63 hours); dan 50% (20,5 hours) respectively; whereas  on concentration of 109 CFU/mL were 95,83% (10,8 hours); 87,5%(15,28 hours); dan 62,5% (19,6 hours) respectively. Lethal Concentration Median (LC50) of V. Fuscus, V. alginolyticus,  V. anguillarum were  3,2X107 CFU/mL; 4,8 X 108 CFU/mL; dan 2,24X108 CFU/mL. All isolates on concentration of 106 dan 107 CFU/mL did not cause 50%  tested fish mortality Key words : Causative agent, Vibriosis, E. Fuscogutatus,  V. parahaemolyticus, Pathogenicity Penelitian ini bertujuan untuk mengkaji causative agent  vibriosis pada ikan Kerapu Bebek (Cromileptis altivelis) dengan gejala klinis mulut merah serta patogenisitasnya terhadap ikan Kerapu Macan (Epinephelus fuscoguttatus).  Tujuh  isolat Vibrio berhasil diisolasi dari bagian luka dan ginjal Kerapu Bebek Mulut Merah.  Hasil uji postulat koch memperlihatkan lima isolat dimana isolat  JT 07,   JT 10, JT 20 dapat mengakibatkan kematian 100%, sedangkan isolat  JT 04 dan JT 29 menyebabkan kematian 40%. Pada tiga isolat (Vibrio JT 07, JT 10 dan JT 20) yang memperlihatkan patogenitas yang lebih tinggi dilakukan uji lanjutan.  Hasil karakterisasi melalui uji morfologi dan biokimia diperoleh bahwa isolat JT 07 memiliki kemiripan 96,15 % dengan Vibrio fuscus;  JT 10 memiliki kemiripan 100% dengan Vibrio anguillarum dan JT 20 memiliki kemiripan 100% dengan Vibrio alginolyticus. Patogenisitas ketiga isolat vibrio tersebut secara berurutan adalah V. fuscus, V. alginolyticus,  V. anguillarum, dimana diperoleh bahwa  persentase kematian dan rerata waktu kematian (Mean Time to Death, MTD) pada penyuntikan intraperitoneal V. fuscus (JT 07), V. alginolyticus (JT 20) dan V. anguillarum (JT 10) dengan konsentrasi 108 CFU/mL adalah berturut-turut 83,33%  (11,25 jam); 79,16% (15,63 jam); dan 50% (20,5 jam); sedangkan untuk konsentrasi 109 CFU/mL secara berurutan adalah 95,83% (10,8 jam); 87,5% (15,28 jam); dan 62,5% (19,6 jam). Lethal Concentration Median (LC50) V. fuscus,  V.  alginolyticus,  V.  anguillarum secara berurutan adalah  sebesar  3,2X107 CFU/mL; 4,8 X 108 CFU/mL; dan 2,24X108 CFU/mL.  Sedang pada konsentrasi 106 dan 107 CFU/mL semua isolat tidak menimbulkan kematian pada ikan uji.  Hasil ini menunjukkan bahwa tiga causative agent tersebut bersifat patogen pada ikan kerapu. Kata kunci:  Causative agent, Vibriosis, E. fuscogutatus V. parahaemolyticus, Patogenisitas

oai:ojs.ejournal.undip.ac.id:article/38630 2022-02-13T04:23:18Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/38630 2022-02-13T04:23:18Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 4 (2021): Ilmu Kelautan; 215-224 https://ejournal.undip.ac.id/index.php/ijms/article/download/38630/118232 Brotosudarmo, Tatas Hardo Panintingjati; Ma Chung Research Center for Photosynthetic Pigments and Department of Chemistry, Universitas Ma Chung Setiyono, Edi; Ma Chung Research Center for Photosynthetic Pigments and Department of Chemistry, Universitas Ma Chung Awai, Koichiro; Department of Biological Science, Faculty of Science, Shizuoka University Pringgenies, Delianis; Departement of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro 2021-12-06 01:29:25 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/38630 HPLC; marine bacterium; mass spectrometry; Seonamhaeicola; Zeaxanthin en Currently, there are only six species in the genus Seonamhaeicola, i.e., Seonamhaeicola aphaedonensis, S. algicola, S. marinus, S. acroporae, S. maritimus, and S. sediminis. These bacteria have typical yellow or orange color. Among the identified strains, only S. marinus that had been reported to have a yellow polyene flexirubin pigment. However, the presence of carotenoid pigments has not been reported in this genus. Recently, we successfully isolated a new strain, S. algicola strain CC1, bacterium that was found in association with a red seaweed, Halymenia sp., collected from the coast of South Malang, Indonesia. The strain was grown well in the Zobell marine agar 2216E producing yellowish pigments. According to the 16S rRNA sequencing analysis and BLAST search, the strain is closely related to S. algicola strain Gy8, with 99.78% identity. The pigment composition was separated and analyzed by a high-performance liquid chromatography with tandem mass spectrometry detection (HPLC-MS/MS) and the strain was found to produce zeaxanthin as the major component, which appeared at a retention time (tR) of 28.89 min, showing a typical mass spectrum with a molecular ion at m/z 568.5 [M]+ and four product ions at m/z 261.4 [M−307]+, 476.6 [M−92]+, 429.3 [M−139]+, and 536.5 [M− 32]+. Other carotenoids, including zeaxanthin cis isomers, β-cryptoxanthin, β-carotene cis isomer, and β-carotene, are as minor components. The novel and noteworthy finding of this report is the identification of a Seonamhaeicola species that produces carotenoids and can be used as a source of zeaxanthin.

oai:ojs.ejournal.undip.ac.id:article/8515 2020-04-17T06:00:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8515 2020-04-17T06:00:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 3 (2014): Ilmu Kelautan; 131-138 Melki, Melki; Department of Marine Science, Faculty of Mathematic and Natural Science , Sriwijaya University Jl. Raya Palembang-Prabumulih KM 32 Indralaya-OI 30662 Indonesia. Isnaini, Isnaini; Mathematic and Natural Science , Sriwijaya University Jl. Raya Palembang-Prabumulih KM 32 Indralaya-OI 30662 Indonesia. 2014-09-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8515 en Hutan mangrove di daerah estuari mampu menghasilkan stok karbon yang sangat besar sebagai daerah perlindungan dan pemulihan yang efektif sebagai strategi mitigasi perubahan iklim yang efektif. Pemilihan ekosistem pesisir dalam strategi mitigasi memerlukan kuantifikasi stok karbon untuk menghitung emisi atau penyerapan berdasarkan waktu. Penelitian ini menghitung stok karbon pada ekosistem Musi Estuari Waters (MEW) dan Banyuasin Estuari Water (BEW), Provinsi Sumatera Selatan pada tipe vegetasi yang berbeda dan hubungan variabel lingkungan dengan stok karbon. Di tujuh lokasi dalam MEW dan BEW sampel vegetasi dan tanah. Hasil yang didapatkan adalah nilai yang lebih tinggi dari stok karbon di vegetasi dari lokasi III/MEW (7.600,92 mg.ha-1), stok karbon dalam tanah dari lokasi II/MEW (61.081,87 mg.ha-1) dan stok karbon di ekosistem dari lokasi II (64.548,54 mg.ha-1). Mangrove A. marina merupakan yang paling baik menyimpan stok carbon termasuk antara vegetasi dan tanah karena toleransi salinitas yang rendah. Kata kunci: mangrove, karbon, estuari, Musi, Banyuasin Mangrove forests in estuarines can have exceptionally large carbon stocks and their protection and restoration would constitute an effective mitigation strategy to climate change. Inclusion of coastal ecosystems in mitigation strategies require quantification of carbon stocks in order to calculate emissions or sequestration through time. This study quantified the ecosystem carbon stocks of the Musi Estuarine Waters (MEW) and Banyuasin Estuarine Water (BEW), Province of South Sumatra into different vegetation types and examined relationships of environmental variables with carbon stocks. At seven sites within MEW and BEW of vegetation and soil samples. The results that the higher value of carbon stock in vegetation from Site III/MEW (7.600,92 mg.ha-1), the carbon stock in soil from Site II/MEW (61.081,87 mg.ha-1) and carbon stock in ecosystem from Site II (64.548,54 mg.ha-1). Mangrove of A. marina the best to explain carbon stocks included both vegetation and soil because they can tolerate lower salinity. Keywords: mangrove, carbon, estuarine, Musi, Banyuasin

oai:ojs.ejournal.undip.ac.id:article/64258 2025-06-15T08:04:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/64258 2025-06-15T08:04:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 1 (2025): Ilmu Kelautan; 20-30 Fadlillah, Lintang Nur; Laboratory of Hydrology and Environmental Climatology, Faculty of Geography, Universitas Gadjah Mada Widyastuti, Margaretha; Laboratory of Hydrology and Environmental Climatology, Faculty of Geography, Universitas Gadjah Mada Kim, Dong Hyeon; East Sea Environment Research Center, East Sea Research Institute, Korea Institute of Marine Science and Technology Marfai, Muh Aris; Laboratory of Environmental Geomorphology and Disaster Mitigation, Faculty of Geography, Universitas Gadjah Mada Geospatial Information Agency of Indonesia 2025-03-08 15:58:58 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/64258 DELFT3D; hydrodynamics; morphodynamics; numerical modeling; sediment transport en The suspended sediment from the Serang River plays a crucial role in the development of the Wulan Delta. This study employs the open-source DELFT3D model to investigate seasonal hydrodynamics, sediment distribution, and morphodynamic changes in the delta. Sediment dynamics during both the rainy and dry seasons were analyzed using the DELFT3D-Flow model. Tidal data were sourced from TPXO 9v1 and field measurements, while bathymetric data from GEBCO were validated against in-situ observations. Model results indicate seasonal sediment concentration patterns, which were further validated against satellite imagery, demonstrating consistency between simulated and observed sediment distribution. Statistical analysis revealed an RMSE range of 0.001 to 0.061. The estimated sediment deposition rate is approximately 1.2 t·yr⁻¹, with a deposition rate of 2.74 t·m⁻²·yr⁻¹ at both river mouths. About 12% of the sediment accumulates near the river mouth, while the remainder is redistributed by currents influenced by the Java Sea's bed morphology. Erosion was primarily observed in the eastern part of the delta and at the OWR mouth, whereas the western delta exhibited significant deposition due to strong river currents and substantial sediment supply. This sediment distribution suggests potential delta expansion from the west to the north. Findings contribute to the understanding of sediment transport processes in deltas, with implications for mitigating coastal erosion, enhancing delta resilience, and preserving ecosystems in similar regions across northern Java.

oai:ojs.ejournal.undip.ac.id:article/1854 2017-08-19T22:47:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1854 2017-08-19T22:47:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 2 (2011): Ilmu Kelautan; 111-118 Wardiatno, Yusli; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University (IPB) Kampus FPIK-IPB, Darmaga, Bogor 16680 Email : yusli@ipb.ac.id Mashar, Ali; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University (IPB) Kampus FPIK-IPB, Darmaga, Bogor 16680 2012-02-12 19:02:52 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1854 en This study aim was to reveal the population structure, growth, life span and exploitation rate of mantis shrimp (Harpiosquilla raphidea Fabricius, 1798). This research was conducted in Kuala Tungkal, Tanjung Jabung Barat, Jambi from July 2009 to June 2010 and partially carried out periodically. The results showed the difference in group size distribution between the mantis shrimp caught in the intertidal and those caught in subtidal areas. The length of the mantis shrimps in the intertidal area ranged from 25 to 233 mm with the dominant length was 7996 mm, while in the subtidal area the length ranged from 160-366 with dominant length between 193-258 mm. Growth coefficient (K) was 0.14 for males and 0.11 for females; while L∞ was the same for the two sexes, i.e. 381.68 mm. The life-span of the shrimp was estimated to be 6.7 to 8.5 years. The value of exploitation rate (E) was 0.42 indicating a not optimum exploitation rate of the shrimp. Key words: mantis shrimp, growth, exploitation rate, life-span, Kuala Tungkal Penelitian ini bertujuan untuk mengungkapkan struktur populasi, pertumbuhan, lama mass hidup, dan laju ekspoitasi dari udang mantis (Harpiosquilla raphidea Fabricius, 1798). Penelitian ini dilakukan secara periodik di Kuala Tungkal, Tanjung Jabung Barat, Jambi dari Juli 2009 hingga Juni 2010. Hasil penelitian memperlihatkan adanya dua kelompok ukuran yang berbeda di daerah intertidal dengan di daerah subtidal. Ukuran panjang udang mantis yang hidup di daerah intertidal berkisar 25-233 mm dengan kelompok dominan berukuran 79-96 mm, sedangkan di daerah subtidal ukuran panjang udang mantis adalah 160-366 mm dengan kelompok dominan berukuran 193-258 mm. Koefisien pertumbuhan (K) adalah 0,14 untuk jantan dan 0,11 untuk betina; sementara L∞ kedua jenis kelamin adalah sama yakni 381,68 mm. Lamanya masa hidup jenis udang mantis ini diperkirakan antara 6,7 sampai 8,5 tahun. Nilai laju eksploitasi (E) sebesar 0,42 mengindikasikan laju yang belum optimum. Kata kunci: Udang mantis, pertumbuhan, laju eksploitasi, masa hidup, Kuala Tungkal

oai:ojs.ejournal.undip.ac.id:article/19365 2019-03-26T05:30:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19365 2019-03-26T05:30:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 3 (2002): Jurnal Ilmu Kelautan; 173-179 Suryono, Chrisna Adhi; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro 2009-03-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19365 en Senyawa pestisida merupakan senyawa persisten yang sangat sulit diuraikan dan akan terakumulasi dalam lemak suatu organisme. Tujuan dari penelitian ini adalah untuk mengetahui keberadaan senyawa pestisida dan keterkaitannya dengan keanekaragaman makrozoobenthos di perairan Mlonggo Jepara. Metoda survey digunakan dlaam penelitian ini dengan mengambil 3 lokasi titik sampling dan ulangan sebanyak 4 kali. Hasil penelitian menunjukkan daerah muara sungai (stasiun II) menunjukkan kandungan pestisida yang lebih tinggi dan keanekaragaman hewan makrozoobenthos yang rendah bila dibandingkan dengan stasiun I (perairan sungai) dan stasiun III (perairan laut).Kata kunci: Pestisida; akumulasi; makrozoobentbos  The pesticide compound has characteristic difficult to degrade in the nature and accumulate in fat tissue of organism. The purpose of the research was to investigate the existance of pesticide compound of Mlonggo waters ,and their correlation to macrozoobenthic diversity. Sampling survey method was applied in this research which take place on 3 stations with 4 replicates. The results show, that the location on the mouth of river (station II) has the highest concentration of pesticide compound and lowest of macrozoobenthic diversity compared with stations I and III which located on the river and sea.Keywords: Pesticide; accumulation; macrozoobenthic

oai:ojs.ejournal.undip.ac.id:article/2363 2012-03-04T14:48:48Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2363 2012-03-04T14:48:48Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 2 (2004): Jurnal Ilmu Kelautan; 82-85 Thamrin, Thamrin; Program Pasca Sarjana Ilmu Lingkungan, Universitas Riau, Pekanbaru Laboratorium Biologi Laut, Fakultas Perikanan dan Ilmu Kelautan, Universitas Riau, Pekanbaru Hafiz, M; Laboratorium Biologi Laut, Fakultas Perikanan dan Ilmu Kelautan, Universitas Riau, Pekanbaru Mulyadi, A; Laboratorium Biologi Laut, Fakultas Perikanan dan Ilmu Kelautan, Universitas Riau, Pekanbaru Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2363 en Densitas zooxanthellae karang scleractinia Acropora aspera di perairan Pulau Mursala dan perairan Pulau Poncan Sumatra Utara telah diamati untuk melihat pengaruh turbiditas. Zooxanthellae sebagai simbion karang berbeda secara nyata antara dua lingkungan perairan yang berbeda yakni Perairan Mursala yang memiliki turbiditas lebih rendah secara signifikan dibandingkan dengan perairan Pulau Poncan. Karang scleractinia A. aspera di perairan Poncan memiliki densitas zooxanthellae lebih rendah secara nyata (P = 0,0000077) dari pada di perairan Mursala. Dari analisis regresi antara rerata harian turbiditas perairan dan densitas zooxanthellae A. aspera menunjukkan bahwa densitas zooxanthellae menurun secara signifikan dengan peningkatan kekeruhan. Pengaruh secara nyata kekeruhan perairan terhadap densitas zooxanthellae diperkirakan sebagai pengaruh kebutuhan micro algae akan cahaya dalam aktifitas fotosintesis.Kata kunci: karang, Acropora aspera, zooxanthellae, densitas, turbiditasThe effect of water turbidity on the density of zooxanthellae of scleractinian coral Acropora aspera at Mursala and Poncan waters North Sumatra were observed. Zooxanthellae as simbiont of coral was significantly different between that of two significant difference environments waters (Mursalah Waters had significant lower ofturbidity compare to Poncan waters). The scleractinian coral A. aspera in Poncan waters contained significanly lower (P < 0,5) density of zooxanthellae than Mursala waters. From regression analyses between mean of daily turbidity of waters and density of contained zooxanthellae in A. aspera revealed that density of zooxanthellae decrease significantly with increasing turbidity. The significant effect of turbidity of waters tothe zooxanthellae density was suggested as the effect of light requirement for micro algae in photosynthesis activity.Key words: Coral, Acropora aspera, zooxanthellae, density, turbidity

oai:ojs.ejournal.undip.ac.id:article/42741 2022-12-05T16:33:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/42741 2022-12-05T16:33:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 3 (2022): Ilmu Kelautan; 199-214 Yona, Defri; Marine Science Department, Fisheries and Marine Science Faculty, Brawijaya University Marine Resources Exploration and Management Research Group, Brawijaya University Evitantri, Mangesti Reza; Marine Science Department, Fisheries and Marine Science Faculty, Brawijaya University Wardana, Danu Setia; Marine Science Department, Fisheries and Marine Science Faculty, Brawijaya University Pitaloka, Dyah Ajeng; Marine Science Department, Fisheries and Marine Science Faculty, Brawijaya University Ningrum, Diana; Marine Science Department, Fisheries and Marine Science Faculty, Brawijaya University Fuas, Mochamad Arif Zainul; Marine Science Department, Fisheries and Marine Science Faculty, Brawijaya University Marine Resources Exploration and Management Research Group, Brawijaya University Prananto, Yuniar Ponco; Department of Chemistry, Faculty of Science, Brawijaya University Harlyan, Ledhyane Ika; Fisheries Resources and Utilization Department, Fisheries and Marine Science Faculty, Brawijaya University Marine Resources Exploration and Management Research Group, Brawijaya University Isobe, Atsuhiko; Research Institute for Applied Mechanics, Kyushu University 2022-09-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/42741 Demersal fish; Eastern Indian Ocean; Java Sea; Pelagic fish; Plastic pollution en Microplastics have been found in the marine environment worldwide. Due to their very small size, it could be ingested by marine organisms from small size plankton to big size fish. The aim of this study is to assess the variability of microplastics in three different organs (gills, gastrointestinal tracts, and muscles) of commercial fishes in five different fishing ports in East Java Province, Indonesia. A total of 137 fish samples from 14 species were extracted to identify the types of microplastics. The microplastics found in the fish samples were mostly dominated by fiber, fragments, and a little quantity of film. In most species, the gills accumulated more microplastics compared to the gastrointestinal tracts and muscles. Gill is the organ that is highly exposed to the environmental conditions, therefore, it is more susceptible to the microplastic contamination. The results showed that there was an inverse relationship between the size of the fish and the occurrence of microplastics (P<0.05). Small size Sardinella lemuru contained more microplastics than bigger size fish such as Katsuwonus pelamis. The variability of microplastics found in this study showed important factors such as habitat, fish size, feeding behavior, and organ function which influenced the ingestion process of microplastic. This study also revealed the presence of microplastics were not only in the gills and gastrointestinal tracts of fish, but also in its muscles. Since this study targeted commercial fishes, further research is needed to know the possible impact on human consumption of fish containing microplastics.

oai:ojs.ejournal.undip.ac.id:article/548 2020-10-25T22:31:06Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/548 2020-10-25T22:31:06Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 2 (2008): Jurnal Ilmu Kelautan; 95-102 Rifardi, Rifardi 2010-11-12 11:04:44 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/548 id Penelitian ini bertujuan untuk menjelaskan hubungan kelompok foraminifera bentik dengan kondisi lingkungan di perairan muara Sungai Mesjid Selat Rupat. Q-Mode Cluster Analysis dilakukan berdasarkan spesies foraminifera bentik dominan yang ditemukan di sedimen permukaan dari 6 stasiun di perairan ini. Hasil penelitian ini menunjukkan bahwa foraminifera bentik ditemukan dalam jumlah banyak di daerah bagian tengah Selat Rupat. Sebaliknya jumlah yang kecil/sedikit ditemukan di mulut Sungai Mesjid. Jumlah foraminifera bentik yang paling banyak ditemukan di daerah transisi yang terletak diantara bagian tengah Selat Rupat dan mulut sungai. Berdasarkan hubungan antara data oseanografi, hasil anaiisis mekanikal sedimen permukaan dengan distribusi foraminifera bentik, maka seluruh foraminifera bentik di esturia Sungai Mesjid Selat Rupat dikelompokkan menjadi tiga kelompok yang masing-masing menempati daerah bagian tengah Selat Rupat yang dipengaruhi oleh massa air laut yang mengalir melalui selat ini, daerah transisi yang merupakan pertemuan dua massa air yaitu massa air dari Selat Malaka dan muara Sungai Mesjid serta yang menempati mulut Sungai Mesjid dan secara dominan dipengaruhi massa air Sungai Mesjid.Kata kunci: foraminifera bentik, sedimen, muara

oai:ojs.ejournal.undip.ac.id:article/10052 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/10052 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 4 (2015): Ilmu Kelautan; 233-238 Kautsari, Neri; Program studi Manajemen Sumberdaya Perairan, Universitas Samawa Jln bay pass sering, Sering, Kec Unter Iwes, Sumbawa, NTB 61213 Ahdiansyah, Yudi; Program studi Manajemen Sumberdaya Perairan, Universitas Samawa Jln bay pass sering, Sering, Kec Unter Iwes, Sumbawa, NTB 61213 2015-12-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/10052 id Perairan Labuhan Terata, Sumbawa, Nusa Tenggara Barat merupakan perairan yang sangat penting keberadaannya bagi masyarakat Labuhan Terata karena peran pentingnya sebagai daerah perikanan terutama dalam budidaya rumput laut, namun kajian daya dukung dan kesesuaian lahan perairan bagi pengembangan budidaya rumput laut masih belum banyak diketahui. Tujuan dari penelitian ini ialah untuk mengetahui daya dukung dan kesesuaian lahan perairan untuk pengembangan budidaya rumput laut. Penelitian ini telah dilakukan pada bulan Mei sampai Juni 2015. Data Arus, suhu, pH, kecerahan, oksigen terlarut, salinitas, nitrat dan fosfat diambil dari permukaan perairan pada lima stasiun pengamatan. Suhu perairan diukur dengan thermometer Hg, oksigen terlarut dengan menggunakan DO meter, pH perairan dengan pH meter, nitrat dan fosfat dianalisis dengan metode spektrofotometri. Hasil penelitian menunjukkan bahwa nilai kesesuaian lahan ke–lima stasiun berada dalam kategori sesuai bersyarat. Kata kunci: daya dukung, kesesuaian lahan, rumput laut, perairan Labuhan Terata, Sumbawa Labuhan Terata Waters, Sumbawa, West Nusa Tenggara is one of the waters are very important for Labuhan Terata peoples because function for fisheryes especially seaweed cultivation, but asses carrying capacity and site suitability of waters is minus. The research objective was to assess carrying capacity and site suistability in the Labuhan Terata waters at transititions season. This research have been carried out in Mey to June 2015. Current, brightness, temperature, dissolved oxygen (O2), acidity (pH), salinity, phosphate and nitrate parameters was measured directly from a layer surface at five research stations. The degree of temperature was measured thermometer Hg, acidity (pH) was measured with pH meter, dissolved okxygen was measured dissolved oxygen meter (DO meters), measurement of nutriens (phosphate & nitrate) concentration used spectrophotometri method. The result of the analysis showed that the value of site suitability of the five stations are in the category conditional suitable. Key words: carrying capacity, Site Suitablity, seaweed culture Labuhan Terata Waters, Sumbawa

oai:ojs.ejournal.undip.ac.id:article/70829 2025-12-21T07:49:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/70829 2025-12-21T07:49:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 3 (2025): Ilmu Kelautan; 395-410 https://ejournal.undip.ac.id/index.php/ijms/article/download/70829/232839 https://ejournal.undip.ac.id/index.php/ijms/article/download/70829/232840 https://ejournal.undip.ac.id/index.php/ijms/article/download/70829/232842 Utami, Diah Ayu Satyari; Department of Aquaculture, Marine and Fisheries Polytechnic of Jembrana Ilham, Ilham; Department of Aquaculture, Marine and Fisheries Polytechnic of Jembrana Insani, Liga; Department of Aquaculture, Marine and Fisheries Polytechnic of Jembrana Kusmiatun, Anik; Department of Aquaculture, Marine and Fisheries Polytechnic of Jembrana Wahyu, Wahyu; Study Program of Fish Breeding Technology, State Polytechnic of Lampung Yudiati, Ervia; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Rahman, Rahman; Department of Aquaculture, Faculty of Fisheries and Marine Science, IPB University Laboratory of Aquaculture and Artemia Reference Center, Faculty of Bioscience Engineering|Ghent University|Belgium Albasri, Hatim; Regenerative Aquaculture Research Group, Research Organization for Agriculture and Food, Indonesian National Research and Innovation Agency Szuzter, Brian Walter; Geography Department, University of Hawai’i at Manoa 2025-09-10 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/70829 Bacillus; Lactobacillus; Mixed Bacteria; Penaeus vannamei; Probiotics en The Pacific white shrimp (Penaeus vannamei) is a key species in global aquaculture, particularly under intensive farming systems where high stocking densities often lead to deteriorating water quality, disease outbreaks, and reliance on antibiotics. While probiotics are increasingly applied to enhance shrimp health and performance, comparative evidence on the efficacy of different commercial probiotic formulations remains limited. This study aimed to evaluate the effects of three commercial probiotic products on growth performance, water quality, microbial populations, and immune response in intensively reared Pacific white shrimp. Shrimp were fed diets supplemented with one of three probiotics (PB, PL, and PMB) or a control diet for 40 days. Growth parameters, nitrogenous waste levels, bacterial counts in water and organs, and total hemocyte count (THC) were analyzed. The PB treatment (multi-strain Bacillus) significantly enhanced specific growth rate (2.99±0.0027% day⁻¹), feed efficiency (57.5±0.09%), weight gain, and THC (3.80 × 10⁵ cells mm⁻³) compared to control (P<0.05). The PB and PMB treatments also reduced total ammonia nitrogen, nitrite, nitrate, and Vibrio populations in water and shrimp tissues. Intestinal colonization by beneficial bacteria was highest in PB and PL groups. These results demonstrate that specific probiotic formulations, particularly PB, can improve growth, immunity, and water quality while reducing reliance on antibiotics and water exchange. The findings support the integration of targeted probiotics in sustainable shrimp aquaculture, including biofloc and recirculating aquaculture systems (RAS).

oai:ojs.ejournal.undip.ac.id:article/632 2012-02-28T08:33:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/632 2012-02-28T08:33:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 2 (2007): Jurnal Ilmu Kelautan; 79-92 Sugianto, Denny Nugroho ADS, Agus 2012-02-28 15:00:30 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/632 id Salah satu aspek oseanografi yang penting untuk mengetahui hidrodinamika dari suatu perairan adalah polapergerakan arus. Wilayah pantai Sumatera Barat memiliki topografi yang unik, terdiri dari banyak pulau, teluk dan tanjung serta terdapat pertemuan 2 massa air besar. Penelitian ini dilakukan untuk mendapatkan informasi mengenai kondlsi arus perairan Sumatera Barat. Metode pengukuran data arus di lapangan menggunakan metode Eularian. Sedangkan metode deskriptif digunakan untuk analisa hasil penelitian dan model matematis diperlukan untuk membantu analisis tersebut terutama untuk pola arus secara spasial. Penentuan lokasi sampling menggunakan metode pertimbangan (Purposive Sampling Method) sebanyak 3 lokasi. Pengambilan data lapangan dibagi menjadi 3 kondisi musim yaitu musim peralihan (27-30 April 2004), musim timur (9-12 Juli2004) dan musim barat (24-27 Nopember 2004). Lokasi penelitian berada di wilayah perairan sebelah barat Provinsi Sumatera Barat, yang meliputi perairan sekitar Padang, Kab. Padang (Lokasi 1), Pariaman, Kab.Padang Pariaman (Lokasi 2), dan Painan, Kab. Pesisir Selatan (Lokasi 3). Data survey lapangan yang diperolehakan digunakan sebagai veriffkasi hasil model matematis yang dibuat. Berdasarkan hasil penelitian diperoleh bahwa pola pergerakan arus di perairan pantai Suma tera Barat di pengaruhi oleh pasut serta pola arus regional di Samudera Hindia. Dari hasil pengamatan lapangan, kecepatan arus terbesar terjadi pada musim peralihan, dengan kecepatan maksimal mencapai 0,358 - 0,397 m/dt dengan arah dominan ke tenggara hingga selatan. Pada musim timur kecepatan arus maksimal mencapai 0,22 - 0,24 m/dt dengan arah dominan ke arah tenggara. Sedangkan pada musim barat kecepatan arus maksimal 0,22-0,29 m/dt dengan arah dominan kearah utara hingga selatan.Kata kuncl: Oseanografi, Arus, Pasut, Model, Sumatera Barat.

oai:ojs.ejournal.undip.ac.id:article/22042 2021-10-13T01:07:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/22042 2021-10-13T01:07:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 3 (2019): Ilmu Kelautan; 139-145 Nugraha, Mohammad Agung; Bangka Belitung University Hudatwi, Mu’alimah; Bangka Belitung University Sari, Fajar Indah Puspita Puspita; Bangka Belitung University 2019-09-04 16:17:01 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/22042 Geochemical; Heavy Metals; Sediments; Kelabat Bay en Although concentrations of many heavy metals has been measured totally, they may not give a good indicator for environmentally hazard to organism. The purpose of this study is to identify sources, determine bioavailability, and assess risk based on the geochemical fractionation of heavy metals Pb, Cu and Zn on the surface sediments of Kelabat Bay, Bangka Island. Fractionation of heavy metals was analyzed by sequential extraction. The concentrations of heavy metals Pb, Cu, and Zn in sediments ranged from 8.86-29.21 mg.kg-1 (average 16.85 mg /kg), 0.16-9.54 mg.kg-1 (average 4.39 mg.kg-1), and 25.58-237.24 mg.kg-1 (average 71.99 mg.kg-1). Pb and Zn in Kelabat Bay are more bound to non-residual fractions (F1+F2+F3) or non-resistant with a range of 60.63-89.87% and 47.98-84.66% that are mainly come from anthropogenic activities. Cu tend to be stored or bound to the residual fraction (F4) with a proportion of 97.7-100% meaning that it comes from natural sources. Based on the Risk Assessment Code (RAC), Pb have a low to moderate risk in the environment and Zn heavy metals are not at risk to low. These conditions indicate the potential for biological availability (bioavailability) of Pb and Zn in the inner bay waters. For heavy metals Cu is not at risk in the environment.

oai:ojs.ejournal.undip.ac.id:article/4692 2017-08-19T22:45:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/4692 2017-08-19T22:45:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 3 (2012): Ilmu Kelautan; 148-153 Helfinalis, Helfinalis; Bidang Dinamika Laut, Pusat Penelitian Oseanografi, Lembaga Ilmu Pengetahuan Indonesia Jl.Pasirputih 1 Ancol Timur Jakarta Utara Sultan, Sultan; Universitas Hasanuddin, Jl. Perintis Kemerdekaan Km.10 Makassar, 90245. Sulawesi Selatan, Indonesia. Rubiman, Rubiman; Bidang Dinamika Laut, Pusat Penelitian Oseanografi, Lembaga Ilmu Pengetahuan Indonesia Jl.Pasirputih 1 Ancol Timur Jakarta Utara 2012-09-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/4692 en Kandungan padatan tersuspensi total di Selat Flores Boleng Alor dan Selatan Pulau Adonara Lembata Pantar telah diteliti pada bulan Juli 2011 yang mewakili musim timur dengan menggunakan Kapal Riset Baruna Jaya VIII. Perairan ini dipilih karena mempunyai sumber daya wisata laut berupa lintasan Cetacean dan pesisir pantai yang indah bernilai ekonomis. Air laut di permukaan dan pada kedalaman termoklin diambil dengan menggunakan Rosette water Sampler. Sampling dilakukan di 18 titik stasiun. Hasil penelitian menunjukan sebaran nilai kandungan padatan tersuspensi total secara keseluruhan masih lebih tinggi perairan Maluku Utara, lebih rendah dibandingkan dari perairan sekitar Selat Makasar, Barat Kalimatan dan hampir sama dengan perairan Sulawesi  Utara. Nilai di lokasi penelitian ini juga lebih tinggi dari 20 mg/l dari nilai toleransi baku mutu yang telah ditetapkan oleh Kementerian Lingkungan Hidup. Nilai padatan tersuspensi total yang lebih rendah dari 20 mg/l kini sangat bermanfaat bagi kehidupan biota laut yang berada di sekitar perairan yang diteliti.Kata kunci: padatan tersuspensi total, Flores, Boleng, AlorA study on total suspended solid around Selat Flores Boleng Alor straits and southern of Adonara Lembata Pantar Islands waters was conducted during July 2011 as representative of the east season using R.V. Baruna Jaya VIII. The locations were selected due to the fact that they have high potencies of marine tourism on the tracking of Cetacean. The water samples were collected using Rosette Water Sampler on the surface and termocline water at 18 stations respectively. The results showed that padatan tersuspensi total concentration at all stations were higher then area Maluku Utara, similar then North Sulawesi, lower than other area of Makasar Strait, West Kalimatan waters and also higher than tolerable 20 mg/l limited values of padatan tersuspensi total in the water according to Ministry of Environmental (KLH). It gives benefit for marine living resources.Key words: total suspended solid, Flores, Boleng, Alor

oai:ojs.ejournal.undip.ac.id:article/52949 2023-11-03T06:35:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/52949 2023-11-03T06:35:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 2 (2023): Ilmu Kelautan; 161-172 Dhewang, Ichoun Brawici; Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Yudiati, Ervia; Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Subagiyo, Subagiyo; Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Alghazeer, Rabia; Department of Chemistry, Faculty of Sciences, University of Tripoli 2023-06-09 15:52:44 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/52949 carrageenan supplementary diet; Kappaphycus alvarezii; Immune Response; Gene Expression en White shrimp (Litopenaeus vannamei) is one of the leading commodities in aquaculture. In recent years, the shrimp farming industry worldwide has suffered heavy losses due to disease. Increasing the immune system in shrimp using immunostimulants that are more environmentally friendly such as carrageenan from Kappaphycus alvarezii, seems promising. The purpose of this study was to determine the increase in immune response and gene expression in White shrimp after carrageenan supplementary diet treatment. This research was using a laboratory-scale experimental method with a factorial Completely Randomized Design (CRD) which was analyzed using One Way ANOVA. The treatments were negative control (without carrageenan addition), 5 g.kg-1, 10 g.kg-1, 15 g.kg-1, and 20 g.kg-1 carrageenan supplemented feed. All treatments were replicated three times. 180 L. vannamei with average weight of 6.5±0.66 g is used for research object Total Haemocyte count (THC), Phenoloxidase (PO), Superoxide Dismutase (SOD) activity, and Phagocytic activity/Index (PA/PI) were examined after feeding the White shrimp with diets supplemented with carrageenan in time series sampling. Immune-related gene expression (Lipopolisaccharide Glucan Binding Protein/ LGBP, Pro Pehnol Oxidase/ ProPO, and Lectin Type C/ Lectin) was evaluated by quantitative Real-Time PCR (qRT-PCR) at the end of experiment. Results indicated that the immune parameters directly increased according to the doses of carrageenan and time. The 20 g.kg-1 carrageenan treatments gave better results. three immune-related genes expression i.e LGBP, Lectin, and proPO were upregulated.  Therefore, carrageenan supplementation of shrimp feed can improve innate immunity as well as the expression of immune-related genes.

oai:ojs.ejournal.undip.ac.id:article/2186 2014-07-10T17:03:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2186 2014-07-10T17:03:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 4 (2006): Jurnal Ilmu Kelautan; 193-200 Rachmawati, Diana; Program Studi Budidaya Perairan, Jurusan Perikanan Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Semarang, Indonesia Tilp. 024.7474698 Hutabarat, Johannes; Program Studi Budidaya Perairan, Jurusan Perikanan Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Semarang, Indonesia Tilp. 024.7474698 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2186 en Kendala yang dihadapi dalam penggunaan bahan nabati dalam pakan adalah pemanfaatan pakan tidak maksimal. Hal ini disebabkan karena bahan nabati dalam pakan terutama yang berupa biji-bijian didalamnya terdapat zat anti nutrisi berupa asam fitat. Asam fitat ini sulit dicerna dengan baik oleh ikan kerapu, sehingga dapat mempengaruhi penyerapan nutrien yang akhirnya berpengaruh terhadap pemanfaatan nutrisi pakan dan selanjutnya secara tidak langsung juga dapat mempengaruhi pertumbuhan. Salah satu cara untuk mengatasi masalah tersebut adalah dengan penambahan Ronozyme P yang mengandung enzim fitase ke dalam pakan. Roinozyme P berbentuk butiran yang terbuat dari jamur Peniphora lycii hasil fermentasi dengan jamur Aspergillus oryza. Penelitian ini bertujuan untuk mengetahui pengaruh Ronozyme P dalam pakan buatan terhadap pemanfaatan pakan dan pertumbuhan kerapu macan serta mengetahui dosis Ronozyme P yang baik untuk  pemanfaatan pakan dan pertumbuhan kerapu macan. Metode yang digunakan dalam penelitian ini adalah metode eksperimen yang dilakukan dilaboratorium dengan menggunakan rancangan acak lengkap (RAL) dengan empat perlakuan dan tiga ulangan. Perlakuan yang diberikan adalah penambahan Ronozyme P yang berbeda dalam pakan, yaitu A (0 mg/kg pakan); B (500 mg/kg pakan); C (1000 mg/kg pakan); dan D (1500 mg/kg pakan). Parameter yang diamati adalah pertumbuhan mutlak, laju pertumbuhan harian, pemanfaatan pakan (konversi pakan dan rasio pemanfaatan protein), kelulushidupan dan kualitas air. Data dianalisis dengan analisis ragam (Anova) dan perbedaan antar perlakuan dengan uji wilayah ganda duncan. Penelitian ini di laksanakan pada bulan Agustus-Desember 2005 di Balai Budidaya Air Payau Jepara. Hasil penelitian menunjukkan Ronozyme P memberikan pengaruh yang nyata (p<0,05) terhadap pertumbuhan mutlak, laju  pertumbuhan harian, dan konversi pakan, serta memberikan pengaruh sangat nyata terhadap (p<0,01) rasio pemanfaatan protein. Tetapi tidak memberikan pengaruh nyata (p>0,05) terhadap kelulushidupan. Dosis yang baik untuk pemanfaatan pakan dan pertumbuhan kerapu macan adalah 875-1000 mg/kg pakan.Kata kunci : Ronozyme P, Pertumbuhan, Pemanfaatan pakan, Kerapu macan.One constraint faced using a plant material in diets is food utilization can’t maximal. This matter caused by plant materials in diets especially in the form of cereals contain anti nutritional elements like phytic acid. Thephytic acid is difficult to digested by brown-marbled grouper, so that can be influence the absorbtion of nutrient and utilization of feed nutrition and finally have an effect to growth. The one solution to overcome the problem is addition of Ronozyme P contain phytase enzyme in feed. Ronozyme P in granulated form made of from mushroom Peniphora lycii and fermented by Aspergillus oryza. This research aimed to knoweffect addition of Ronozyme P in artificial feed to feed utilization and growth and to know the best Ronozyme P dose for the best feed utilization and growth of brown-marbled grouper. The research conducted by experimental in laboratory used completely random design with 4 treatments and 3 replicates for each treatment. The treatment is addition of Ronozyme P in feed that are: A (0 mg enzyme/kg feed); B (500 mgenzyme/kg feed); C (1000 mg enzyme/kg feed); and D (1500 mg enzyme/kg feed). The observing parameter are : absolute growth, daily growth rate, feed efficiency (feed conversion and protein efficiency ratio), survival rate and water quality of culture medium. Data analysed by Analysis of Variance (ANOVA)and Duncan Multiple Range Test. This research executed within August-December, 2005 on the Center for Brackishwater Research, Jepara, Central Java. The result showed that Ronozyme P given a significant effect (p<0,05) to absolute growth, daily growth rate, and feed conversion brown-marbled grouper, and given a very significant effect (p<0,01) to protein efficiency ratio. But did not give a significant effect (p>0,05) to survival rate. The best dose of Ronozyme P to feed utilization and growth for brown-marbled grouper are 875-1000 mg /kg feedKey words : phytase enzyme, food utilization, brown-marbled grouper.

oai:ojs.ejournal.undip.ac.id:article/11248 2021-10-13T06:09:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/11248 2021-10-13T06:09:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 1 (2017): Ilmu Kelautan; 25-30 Januar, Hedi Indra; 1. Indonesian Research and Development Center for Marine and Fisheries Product Processing and Biotechnology, Jl. KS Tubun Petamburan VI Slipi Jakarta Pusat Indonesia 10260. 2. Department of Marine Science, Faculty of Marine Science and Fisheries, Bogor Agricultural University, Jl, Raya Dramaga, Kampus IPB, Bogor, Indonesia 16680 Zamani, Neviaty Putri; Department of Marine Science, Faculty of Marine Science and Fisheries, Bogor Agricultural University, Jl, Raya Dramaga, Kampus IPB, Bogor, Indonesia 16680 Soedharma, Dedi; Department of Marine Science, Faculty of Marine Science and Fisheries, Bogor Agricultural University, Jl, Raya Dramaga, Kampus IPB, Bogor, Indonesia 16680 Chasanah, Ekowati; Indonesian Research and Development Center for Marine and Fisheries Product Processing and Biotechnology, Jl. KS Tubun Petamburan VI Slipi Jakarta Pusat Indonesia 10260 2017-03-01 04:24:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/11248 Indonesian Research and Development Center for Marine and Fisheries Product Competitiveness and Biotechnology en Soft coral is predicted to outcompete with hard coral in future ocean acidification scenarios. Beside the biological resilience shown in acidic conditions, soft corals ability to maintain or compete for space is shown to relate with their ability to produce cytotoxic cembranoid-type compounds. The aim of this study was to investigate composition of cytotoxic cembranoid compounds of Sarcophyton glaccum soft coral exposed to current and predicted future ocean acidification scenarios. Sarcophyton glaccum colonies were acclimated along a pH gradient to simulate predicted increases in ocean acidification: natural/current (pH 8,2), slight increase in acidification (pH 8.0 year-1 2060), and moderate increase in acidification (pH 7,8 year­-1 2100). Cembranoid composition was determined by quantitative Nuclear Magnetic Resonance spectroscopy while cytotoxic activity was determined against tumor cell lines. Results of the study showed cytotoxicity and sarcophytoxide (the most active cembranoid compound in observed Sarcophyton glaccum) were both found to be higher at pH 8,0. However, a further increase of acidification resulted on a reduction of both the cytotoxicity and sarcophytoxide production. This suggests that acidification pressures affect directly the defense system metabolism of Sarcophyton glaccum and that while they may be resilient to small decreases in pH, their ability to compete for space may be hampered by more pronounced changes. Keywords: Cembranoids; Cytotoxic; Sarcophyton glaccum; Seawater Acidification; Soft Coral.

oai:ojs.ejournal.undip.ac.id:article/2277 2017-08-19T22:46:16Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2277 2017-08-19T22:46:16Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 4 (2011): Ilmu Kelautan; 187-192 Yudiati, Ervia; Marine Station Laboratory, Teluk Awur Jepara, Jurusan Ilmu Kelautan, Universitas Diponegoro, Semarang. Telp 0291 599194, Hp.081326228096, email:eyudiati@gmail.com Sejati, Sri; Marine Station Laboratory, Teluk Awur Jepara, Jurusan Ilmu Kelautan, Universitas Diponegoro, Semarang. Telp 0291 599194, Hp.081326228096, Sunarsih, Sunarsih; Marine Station Laboratory, Teluk Awur Jepara, Jurusan Ilmu Kelautan, Universitas Diponegoro, Semarang. Telp 0291 599194, Hp.081326228096, Agustian, Rani; Marine Station Laboratory, Teluk Awur Jepara, Jurusan Ilmu Kelautan, Universitas Diponegoro, Semarang. Telp 0291 599194, Hp.081326228096, Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2277 en Penelitian ini bertujuan untuk mengukur aktivitas antioksidan dan menguji toksisitas ketiga ekstrak. Penelitian dilakukan secara laboratoris. Ekstrak Kasar Spirulina sp didapatkan melalui proses maserasi dengan pelarut methanol. Ekstrak pigmen kasar diperoleh melalui partisi dengan pelarut methanol/aseton serta eter.  Aktivitas antioksidan dilakukan dengan mengukur IC50 dengan metode spektrofotometri dengan DPPH (1,1-diphenyl-2-picrylhydrazyl) sedangkan kadar toksisitas dilakukan dengan menghitung LC50 dengan uji BSLT (Brine Shrimp Lethality Test). Kromatografi Kolom Terbuka dilakukan untuk mengisolasi pigmen sedangkan identifikasi pigmen dilakukan dengan teknik Kromatografi Lapis Tipis dan metode spektroskopi. Data dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa ekstrak kasar metanol, ekstrak pigmen kasar methanol/aseton dan eter mempunyai nilai IC50 323,7; 51 dan 34,85 ppm. Nilai LC50 dari ekstrak methanol r, ekstrak kasar pigmen methanol/aseton dan eter berturut-turut adalah 113,20; 65,22 ppm dan 34,11 ppm. Hasil isolasi pigmen dan identifikasi pigmen menunjukkan bahwa pigmen mengandung β-karoten dan klorofil α. Hasil uji fitokimia menunjukkan bahwa ketiga ekstrak positif mengandung senyawa golongan flavonoid dan sterol. Ekstrak pigmen kasar Spirulina sp. selain mempunyai aktivitas antioksidan yang tinggi juga mempunyai toksisitas yang tinggi terhadap nauplii Artemia sp. Kata kunci: Spirulina sp,ekstrak metanol, ekstrak kasar pigmen, IC50, LC50.  The aims of this research were to determine the antioxidant activities and level of toxicity of those three extracts. Spirulina sp crude extract has obtained by maseration technique with methanol solution while crude pigment extract has collected by partition technique with methanol/acetone and ether solution. The laboratory experiments of antioxidant activities (IC50) was determine by DPPH (1,1-diphenyl-2-picrylhydrazyl) and spectrophotometrical methods while the level of toxicity was done by BSLT (Brine Shrimp Lethality Test). The pigment was isolated using the Couloumb Chromatography Methods while pigment identification was done by Thin Layer Chromatography Methods and confirmed spectrophotometrically. The data was analized descriptively. The results showed that IC50 of methanol extract, crude pigment methanol/acetone and ether were 323.7; 51 and 34.85 ppm, respectively. Furthermore, the toxicity level LC50 of methanol extract, crude pigment methanol/acetone and ether were 113.20; 65.22 and 34.11 ppm respectively. β-carotene and chlorophyll α was identified and isolated. Those three extract contains flavonoid and sterol. It is concluded that crude pigment extract of Spirulina sp. has a high antioxidant activity as well as toxicity to the nauplii of Artemia sp. Key words: Spirulina sp.,methanol extract, crude pigment extract, IC50, LC50

oai:ojs.ejournal.undip.ac.id:article/7069 2017-08-19T22:44:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7069 2017-08-19T22:44:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 2 (2013): Ilmu Kelautan; 71-78 Ahmad, Fasmi; Pusat Penelitian Oseanografi-Lembaga Ilmu Pengetahuan Indonesia (P2O-LIPI). Jln. Pasir Putih 1, Ancol Timur, Jakarta, Indonesia. 14330. 2013-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7069 en Teluk Kendari dan Teluk Lasolo yang terletak di Sulawesi Tenggara banyak menerima limbah berasal dari beberapa sungai yang bermuara ke teluk tersebut dan dari kegiatan penambangan logam nikel di daratan dan kawasan pantai. Limbah tersebut mengandung berbagai macam bahan kontaminan, termasuk logam berat. Tujuan penelitian adalah untuk mengetahui tingkat kontaminasi  logam berat dalam air laut dan sedimen di perairan Teluk Kendari dan Teluk Lasolo dalam kaitannya untuk kepentingan biota laut. Pengukuran kadar logam berat Pb, Cd, Cu, Zn dan Ni dalam air laut dan sedimen di Teluk Kendari dan Teluk Lasolo. Contoh air laut diambil dengan menggunakan Rosette Water Sampler dan sedimen  dengan gravity core pada 10 stasiun penelitian. Kadar logam berat diukur dengan menggunakan Spektrofotometer Serapan Atom (SSA). Hasil penelitian menunjukkan kadar logam berat Pb, Cd, Cu, Zn dan Ni dalam air laut dan sedimen di Teluk Lasolo lebih tinggi dibandingkan dengan Teluk Kendari. Tingginya kadar ke lima logam berat di Teluk Lasolo ini disebabkan oleh limbah yang berasal dari aktivitas penambangan nikel di kawasan darat dan pantai Lasolo. Hasil penelitian ini menunjukkan bahwa kadar ke lima logam berat di kedua perairan teluk ini masih aman untuk biota laut. Kata kunci: sedimen, air laut, logam berat, pencemaran Lasolo, Kendari Kendari and Lasolo Bay which were situated in Southeast of Sulawesi. Both of Bay have been received a lot of waste originated from a variety of activities in Kendari City and Nickel mining activities in the land and in coastal area of Lasolo region. Waste contains a variety of materials contamination, one of these contaminants are heavy metals. The aim of this research is to determine the level of heavy metal contamination in seawater and sediment in Kendari and Lasolo Bay in their relation to the interests of marine organisms. Measurement of levels of heavy metals Pb, Cd, Cu, Zn and Ni in  sediment in the Kendari and  Lasolo Bay has been done in June 2011. Seawater and sediment samples have taken by using a Rosette water sampler and gravity cores at 10 research stations. Heavy metal levels were measured by Atomic Absorption Spectrophotometer (AAS). The results showed that the concentration of heavy metals Pb, Cd, Cu, Zn and Ni in seawater and sediments in Lasolo Bay is higher compared to Kendari Bay. This condition is believed to be attributable from the nickel mining activities in the land and coastal area of Lasolo. Generally, the concentration of those heavy metals in both of that bay still saved for marine organism Keywords: sediment, seawater, heavy metal, pollution Lasolo, Kendari

oai:ojs.ejournal.undip.ac.id:article/60388 2024-10-04T07:32:43Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/60388 2024-10-04T07:32:43Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 2 (2024): Ilmu Kelautan; 170-180 Wora, Umbu Domu; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Wijayanti, Diah Permata; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Widowati, Ita; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Ginzel, Fanny Iriany; Aquatic Resource Management, Christian University of Artha Wacana Nursalim, Nining; Diponegoro Marine Biodiversity Project Laboratory, Universitas Diponegoro Kholilah, Nenik; Diponegoro Marine Biodiversity Project Laboratory, Universitas Diponegoro Bachtiar, Muggi; Graduate School of Engineering and Science, University of The Ryukyus 2024-06-20 23:50:40 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/60388 Threadfin bream; genetic diversity; mtDNA COI; Oesapa and Oeba; Kupang en Threadfin breams (Nemipteridae) are demersal fish species that constitute a significant catch for East Nusa Tenggara fishermen at the Oeba Fish Landing Site and Oesapa Fish Market, where they are landed year-round. Over the years, there has been a noticeable increase in the capture of threadfin breams, raising concerns about the potential impact on their genetic diversity. The ongoing trend could affect the region’s overall population structure of threadfin breams. This study addresses the need to identify threadfin breams in the landing above sites of threadfin breams through molecular analysis of mtDNA COI. The research involved the examination of 24 samples obtained from the Oeba Fish Landing Site and Oesapa Fish Market. The analysis revealed the presence of five distinct threadfin bream species: Nemipterus hexodon, N. japonicus, N. zysron, N. aurora, and Pristipomoides typus. The genetic distance between individual threadfin breams ranged from 0-0.8%, indicating a relatively close genetic relationship within the population. Also, phylogenetic tree reconstruction further delineated five distinct clades based on the species obtained from the samples. Given these findings, the study emphasizes the importance of sustainable threadfin bream capture to preserve genetic diversity. The results underscore the need for ongoing monitoring and management strategies to ensure the threadfin bream population’s long-term health and stability. Additionally, the study suggests that a more in-depth analysis of genetic diversity and the environmental factors influencing this species is warranted for a comprehensive understanding and effective conservation measures.

oai:ojs.ejournal.undip.ac.id:article/1615 2012-02-17T22:36:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1615 2012-02-17T22:36:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 3 (2009): Jurnal Ilmu Kelautan; 155-159 Suryono, Chrisna Adhi; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Kampus Tembalang, Semarang, Indonesia Telp./Fax. 02474747698, Hp: 08164244909, Email: chrisna_as@yahoo.com Rochaddi, Baskoro; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Kampus Tembalang, Semarang, Indonesia Telp./Fax. 02474747698, Hp: 08164244909, Email: chrisna_as@yahoo.com 2012-02-05 20:28:21 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1615 id Studi ini bertujuan untuk menganalisis kondisi fisika-kimiawi dan tingkat kontaminasi pestisida organoklorin dalam aqifer dangkal di wilayah pesisir Kota Semarang.  Sampel airtanah diambil di 10 lokasi di pesisir Semarang, yang mewakili daerah industri, pertanian dan pemukiman.  Hasil penelitian menunjukkan nilai parameter fisika-kimiawi airtanah (pH, suhu, salinitas) mempunyai variasi yang rendah.  Ke 10 sampel yang diamati menunjukan warna, rasa dan bau dalam air sampel.  Hasil rata-rata kandungan heptaclor adalah 0.023-0.055 µg L-1 dan enfrin adalah tidak terdeteksi sampai 0.648 µg L-1.  Hasil perbandingan kandungan pestsida organochlorine dalam aqifer dangkal di pesisir Semarang dengan WHO dan IWQS menunjukan bahwa air pada aqifer di Semarang termasuk terkontaminasi pestisida organochlorine dan membuktikan telah ditemukannya pestisida organochlorine pada aqifer dangkal di wilayah pesisir Kota Semarang.Kata kunci: aqifer dangkal, organochlorin pestisida, wilayah pesisir  The present study was conducted to assess psycho-chemical parameters and the level of organochlorine pesticides contamination in shallow aquifer of Semarang city coastal areas.  Ten samples of groundwater were collected in different sites of Semarang coastal i.e. industrial, agriculture and settlement areas. The results indicated that low variation existed among some physico-chemical parameter (pH, temperature, salinity). In the colors, taste and odor of 10 water sample were also investigated.  Mean values found in positive samples were heptachlor, ranging from 0.023 to 0.055 µg L-1, whereas endrin, ranging from undetected to 0.648 µg L-1. Compare to World Health Organization (WHO) limits and Indonesian Drinking and Domestic Water Quality Standard for Ground Water (IWQS) showed that this study proved the presence of organochlorine pesticides contamination of some shallow aquifer supplies in the coastal areas of Semarang city. Key  words : shallow aquifer, organochlorine pesticides, coastal area

oai:ojs.ejournal.undip.ac.id:article/14796 2021-10-13T04:01:48Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/14796 2021-10-13T04:01:48Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 4 (2017): Ilmu Kelautan; 185-192 Pramesti, Rini; Department Marine Science, Diponegoro University Setyati, Wilis Ari; Department Marine Science, Diponegoro University Zainuddin, Muhammad; Aquaculture Department, Nahdlatul Ulama Islamic University Puspita, Maya; University of South Brittany EA 3884. LBCM. IUEM. F-56000 Vannes, France 2017-12-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/14796 en This study was done to investigate the bioecology and extract bioactivity of Sargassum sp from Jepara district. Seaweed was collected from Teluk Awur, Panjang Island, Bandengan, Ujung Piring and Bondo. There were seven species of Sargassum identified i.e. S. duplicatum, S. polycystum, S. echinocarpum, S. cinerium, S. crassifolium, S. plagyophillum and S. binderi. Community structure indices were calculated based on data collected by survey. Antibacterial activity of Sargassum extract was done on MDR bacteria. The results showed that diversity index at Panjang Island, Bandengan, and Ujung Piring were categorized as medium, while Teluk Awur and Bondo were categorized as low. Evenness index was high at Teluk Awur, Panjang Island, Bandengan and Ujung Piring and Bondo was low. There was no dominant species found in most of the locations. The principal component analysis exhibited the main variable that affected the Sargassum at Teluk Awur was phosphate, Panjang Island was depth, Ujung Piring was salinity and Bondo was temperature, dissolved oxygen and pH, respectively. There was character similarity between Panjang Island and Bandengan (99.73%), meanwhile, at Teluk Awur, Ujung Piring, and Bondo, the similarity was 99.62%, 99.60%, and 99.52%, respectively. Antibacterial activity of Sargassum sp. demonstrated a positive activity against the MDR bacteria, Staphylococcus aureus (6.28±0.04 mm), Escherichia coli (6.96±0.19 mm), and S. epidermidis (12.65±0.23 mm). Clustering analysis of extracts with bactericidal characteristic found three classes with similarity of class 1, 2 and 3 at 72.33%, 76.80% and 58.50%, respectively. Sargassum sp. was categorized in class 1 had the best antibacterial activity and the highest abundance value. Keywords: ecology, community, Sargassum sp., extracts, antibacterial

oai:ojs.ejournal.undip.ac.id:article/2307 2012-03-01T08:38:13Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2307 2012-03-01T08:38:13Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 1 (2005): Jurnal Ilmu Kelautan; 35-40 Subagiyo, Subagiyo; Laboratorium Eksplorasi dan Bioteknologi Kelautan, Jurusan Ilmu Kelautan, FPIK, Universitas Diponegoro, Semarang, Indonesia Setyati, Wilis A; Laboratorium Eksplorasi dan Bioteknologi Kelautan, Jurusan Ilmu Kelautan, FPIK, Universitas Diponegoro, Semarang, Indonesia Ridlo, Ali; Laboratorium Eksplorasi dan Bioteknologi Kelautan, Jurusan Ilmu Kelautan, FPIK, Universitas Diponegoro, Semarang, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2307 en Benalu adalah tumbuhan epifit parasit yang hidup menempel dan menghisap makanan dari tumbuhaninangnya. Sehingga benalu yang hidup pada tumbuhan mangrove mempunyai kemampuan khusus untuk beradaptasi terhadap senyawa-senyawa yang dibentuk oleh tumbuhan mangrove. Kondisi ini memungkinkan untuk ditemukannya jenis-jenis senyawa baru yang mempunyai potensi sebagai senyawa yang mempunyai nilai di bidang farmakologi dan agrokimia, diantaranya adalah anti bakteri Penelitian ini bertujuan untuk melakukan pengujian secara kualitatif dan kuantitaif bioaktivitas antibakteri dari fraksi-fraksi ekstrak batang C. filiformis. Penelitian dilakukan dengan metode experimental. ekstraksi dan pemisahan menggunakan pelarutkloroform-metanol (20:1). Fraksi-fraksi yang diperleh diuji bioaktivitas antibaktri menggunakan metodepaper disk. Ada 5 variasi konsentrasi fraksi yang diuji yaitu 50 ug/disk, 10 ug/disk, 5 ug/disk, 1 ug/diskdan 0,5 ug/disk. Berdasarkan hasil uji bioaktivitas antibakteri dari ekstrak batang benalu mangrove (C.filiformis) dapat disimpulkan bahwa ekstrak C. filiformis mempunyai potensi sebagai sumber metabolit antibakteri. Dalam penelitian ini semua fraksi tidak menunjukan aktivitas antibakteri terhadap bakteri V. parahaemoliticus dan S. aereus. Aktivitas antibakteri ditunjukan oleh semua fraksi terhadap bakteri uji V. harveyi dan V. anguilarum. Sedangkan aktivitas anti bakteri terhadap E. coli hanya ditunjukan oleh fraksi 4 dan fraksi 5.Kata kunci: Antibakteri, ekstrak C filiformis, benalu mangroveMistletoe as arboreal parasitic plant, hold and absorb their nutrient from host. During nutrient absorption,all of metabolites (include secondary metabolites) which host producing will be absorbed too. For thatmistletoe must have capability to developing strategies to adapt. The one of adaptation strategies is creating bioactive compounds, and predicted that between bioactive compounds have antibacterialactivity. The aim of this research were to antibacterial test of C filiformis stem extract. C filiformis wasextracted in chloroform-methanol (20:1). The fractions were examined to antibacterial activity using paper disc method. There are 5 variation concentration, which tested, 50 ug/disc, 10 ug/disc, 5 ug/disc, 1 ug/disc and 0,5 ug/disc. The result showed that all of fractions of stem extract of C. filiformis were able to inhibit the growth of both V. harveyi dan V. anguilarum, but not toward V. parahaemoliticus and S. aereu,  while fraction 4 and fraction 5 were able to hold the growth of E. coli.Key words : Antibacteria, stem extracts of C filiformis, mangrove mistletoe

oai:ojs.ejournal.undip.ac.id:article/34842 2021-12-05T18:30:07Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/34842 2021-12-05T18:30:07Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 3 (2021): Ilmu Kelautan; 155-162 Kurniawan, Alamsyah; Ocean Engineering Program, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung Barli, Prayla Putri Annani; Ocean Engineering Program, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung Pratama, Munawir Bintang; Ocean Engineering Program, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung Fitriadhy, Ahmad; Program of Naval Architect, Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu 2021-09-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/34842 Marine Energy; Tidal Stream; Hydrodynamic Modelling; Levelized Cost of Energy; Bali en In 2015, Bali Province is mandated by ESDM ministry to become the National Region of Clean Energy, promoting efforts to explore new source of electricity namely tidal stream energy. Previous works have demonstrated that Toyapakeh Strait contains a promising tidal stream resource, with a high stream in a long period. In this study, hydrodynamic modelling and power production analysis is conducted to evaluate this potential with an aim to meet energy demand of Tiga Nusa Cluster Islands. Twenty-one Gen5 KHPS turbines are employed in this study, at an optimized location, 8.72°S, 115.44°E, which contains the highest energy potential. Financial analysis, with 25-year return period of investment and 3.60% interest rate, resulting levelized cost of energy (LCOE) of Rp 6,100.kWh-1. This value is higher than the national and regional selling nominal, in other word the energy cost of tidal stream turbine is relatively high in this location. Nearly 46% of energy cost is spent for turbine fabrication, and from the sensitivity analysis, cutting half the turbine costs may reduce the price by Rp 1,400.kWh-1 while increasing the amount of installed turbine is less significant. Despite of the high prices, the study shows that Toyapakeh Strait holds a promising resource of tidal stream energy.

oai:ojs.ejournal.undip.ac.id:article/7557 2020-04-17T05:59:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7557 2020-04-17T05:59:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 2 (2014): Ilmu Kelautan; 88-96 Mujiyanto, Mujiyanto; Balai Penelitian Pemulihan dan Konservasi Sumber Daya Ikan Jl. Cilalawi No. 1 Jatiluhur, Purwakarta, Jawa Barat, Indonesia 41152 Sugianti, Yayuk; Balai Penelitian Pemulihan dan Konservasi Sumber Daya Ikan Jl. Cilalawi No. 1 Jatiluhur, Purwakarta, Jawa Barat, Indonesia 41152 2014-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7557 en Kelompok ikan yang menjadi target penangkapan di perairan Kepulauan Karimunjawa antara lain adalah ikan yang berasosiasi dengan ekosistem karang, seperti Kerapu (Epinephelus sp. dan Plectropomus sp.). Kerapu tergolong ikan demersal yang menyukai hidup di antara celah karang atau di dalam gua di dasar perairan. Penelitian ini bertujuan untuk mengetahui kondisi bioekologi ikan Kerapu di Kepulauan Karimunjawa. Penelitian dilakukan pada tahun 2011-2013. Komunitas ikan Kerapu diamati dengan menggunakan metode transek garis pada kedalaman 5-6 dan 10-11 meter. Hasil analisis menunjukkan bahwa ikan Kerapu mempunyai keanekaragaman yang rendah dengan sebaran jenis yang merata di seluruh perairan. Terdapat dominasi jenis di Pulau Cendikian. Kesamaan jenis terdekat pada nilai  >95 % di kedalaman 5-6 meter dan 10-11 meter yang membentuk empat kelompok terdekat. Determinasi jenis ikan Kerapu dengan hasil tingkat kesamaan jenis terdekat dengan nilai >95 % di Pulau Kumbang (sisi utara), Pulau Kembar dan Batu Lawang. Perbedaan indeks ekologi dan kesamaan jenis Kerapu diduga dikarenakan faktor fisik-kimia perairan dan ketersediaan nutrisi serta oleh aktivitas nelayan dan kegiatan masyarakat. Kata kunci: ikan; Kerapu; indeks ekologi; Karimunjawa  Fish target groups in Karimunjawa waters consist of associated coral reef fish species such as grouper (Epinephelus sp. and Plectropomus sp.). This study aims to determine bioecology the condition of grouper in Karimunjawa waters. The study was conducted during 2011-2013. Data collection was performed using line transect method at 5-6 and 10-11 meters depth. The ecological value of grouper in waters Karimunjawa showed low diversity and the species of groupers is evenly distributed across the waters. There is species dominance in Cendikian Island. The species also showed closest similarity (> 95 %) in both the depth and formed 4 groups. The closest similarity (​​> 95 %) happened among the waters of north side of Kembang Islands Beetles (north side),  Kembar Island and Batu Lawang. The condition of groupers in Karimunjawa waters is affected by physical-chemical factors, the availability of nutrients, fishing activities and community activity.   Keywords: fish; grouper; ecological index; Karimunjawa

oai:ojs.ejournal.undip.ac.id:article/62629 2024-12-23T10:10:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/62629 2024-12-23T10:10:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 4 (2024): Ilmu Kelautan; 503-518 Supriyadi, Indarto Happy; Research Center for Oceanography, National Research and Innovation Agency Iswari, Marindah Yulia; Research Center for Hydrodynamic Technology-, National Research and Innovation Agency Rahmawati, Susi; Research Center for Oceanography, National Research and Innovation Agency Riniatsih, Ita; Department Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Suyarso, Suyarso; Research Center for Oceanography, National Research and Innovation Agency Hafizt, Muhammad; School of The Environment, The University of Queensland 2024-12-11 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/62629 Species; conditions; environmental; community and government en Seagrass beds have roles and benefits in shallow water ecosystems, including producers of organic matter, habitats for various marine biota, and providing services that are beneficial for the fishing community. However, increasing development activities in coastal areas, have decreased their valuable roles, which also affects damage in seagrass beds in Indonesian waters. Therefore, information on species diversity and seagrass conditions, especially in East Indonesian waters, is needed. This paper aims to provide information as the initial study of the distribution of species diversity, conditions of seagrass beds, and challenges of seagrass management in eastern Indonesia. This study collected primary and secondary data from several data sources from seagrass monitoring and research activities. The assessment of conditions and categories of seagrass cover refers to the Decree of the state minister for the Environment (KMN-LH) of 2004 No. 200 and the 2017 seagrass monitoring guidelines. As a result of 24 monitoring locations ten species were found indicating that Eastern Indonesia has high species diversity. The results at 24 locations can be categorized as healthy seagrass conditions in six locations (25%) and around 16 locations (67%) as less healthy. Monitoring results after 2015 are predicted to change the diversity and seagrass conditions. The challenges of seagrass management in Eastern Indonesian waters, including the coastal environment changes, need to increase public knowledge and understanding of the role, function, and benefits of seagrass. Also, replanting and enhancement of seagrass-protected areas are essentially needed by the local government.

oai:ojs.ejournal.undip.ac.id:article/1843 2017-08-19T22:47:30Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1843 2017-08-19T22:47:30Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 1 (2011): Ilmu Kelautan; 35-40 Abubakar, Hermawaty; Jurusan Biologi FMIPA Universitas Negeri Papua, Jl. Gunung Salju, Amban, Manokwari 98314 e-mail: emma_haliclona@yahoo.com Wahyudi, Aris Tri; Departemen Biologi FMIPA IPB, Jl. Agatis, Kampus IPB Darmaga Bogor Yuhana, Munti; Departemen Budidaya Perikanan IPB, Jl. Agatis, Kampus IPB Darmaga Bogor 2012-02-12 06:33:36 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1843 id Organisme bentik laut seperti spons, seringkali hidup berasosiasi dengan bakteri yang menghasilkan senyawa antimikroba.  Penelitian  ini  bertujuan  untuk  mengetahui  kemapuan  antagonis  isolat-isolat  bakteri  yang berasosiasi dengan spons Jaspis sp. terhadap beberapa bakteri patogen, dengan metode skrining secara kualitatif. Sebanyak 32 (45,71%) dan 20 (29,41%) isolat yang berasal dari bagian mesohyl dan permukaan Jaspis sp. menunjukkan kemampuan antimikroba, karena mampu menghambat pertumbuhan Staphylococcus aureus, Vibrio harveyii, Escherichia coli, Pseudomonas aerogenosa, EPEC K-11, Candida albicans, and C. tropicalis. Uji fenotipik dilakukan pada beberapa isolat dengan aktivitas antimikroba terbaik, yaitu SAB E-8, SAB E-33, SAB E-35, SAB E-38, SAB E-40 dan SAB S-43. Hasil pewarnaan Gram menujukkan isolat  SAB E-8, SAB E35, and SAB E-40 adalah Gram negatif, sedangkan isolat SAB E-33, SAB E-38, and SAB S-43 adalah gram positif yang dilanjutkan dengan identifikasi parsial (pengecatan gram dan uji katalase) untuk kelompok Bacillus.Kata kunci: Bakteri, Asosiasi, Jaspis sp., antimikroba Living benthic marine organisms such as sponges are frequently assosiated with as bacteria that may be produce antimicrobial compounds. This study aims to determine antagonistic of bacterial isolates that associated sponge Jaspis sp., with a qualitative screening method. Screening of bacteria from marine sponge Jaspis sp. which have bility to produce antibacterial subtances was investigated. There are 32 (45,71%) and 20 (29,41%) isolates from mesohyl and surface sponge respectively. Those isolated bacterial showed the antibacterial activity against Staphylococcus aureus, Vibrio harveyii, Escherichia coli, Pseudomonas aerogenosa, EPEC K-11, Candida albicans, and C. tropicalis. However, use of a few additional simple phenotypic tests for those isolate can be used to differentiate among isolates. The simple phenotypic test divided two ways based on staining gram. Gram negative bacteria were desingned SAB E-8, SAB E-35, and SAB E-40 and gram positive bacteria were desingned SAB E-33, SAB E-38, and SAB S-43. Parsial identification that directed to Bacillus was used for positive gram bacteria, involve gram staining, endospora staining and katalase test. Key words: Bacteria, Assosiation, Jaspis sp, antimicrobe

oai:ojs.ejournal.undip.ac.id:article/19356 2019-03-26T05:28:15Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19356 2019-03-26T05:28:15Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 2 (2002): Jurnal Ilmu Kelautan; 121-126 Santoso, A.; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Djunaedi, Ali; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Sarjito, Sarjito; Jurusan Perikanan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro 2009-06-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19356 en Penelitian dilakukan untuk melihat fenomena pertumbuhan compensatory pada pemeliharaan ikan nila merah (O. niloticus). Penelitian skala laboratorium dilakukan dari pertengahan Agustus sampai pertengahan Oktober 2001, di hatchery Ilmu Kelautan FPK Undip, Teluk Awur, Jepara. Benih ikan nila merah (berat rata­rata 37,74±1,16 gr) yang berasal dari Balai Benih Ikan yang sebelumnya diaklimatisasikan pada kondisi laut dipelihara dalam bak-bak percobaan (kepadatan 5 ekor/m3). Masing-masing bak percobaan berlsi 12 ekor ikan. Perlakuan pemuasaan diberikan dengan 3 kali pengulangan selama satu bulan percobaan, yaitu: ikan diberi pakan setiap hari (A/kontrol): ikan diberi pakan selama 6 hari diikuti pemuasaan 1 hari (B): ikan diberi pakan selama 5 hari diikuti pemuasaan 2 hari (C); ikan diberi pakan selama 4 hari diikuti pemuasaan 3 hari (D). Pakan diberikan 2x sehari sebanyak 5% dari biomassa. Hasil penelitian menunjukkan bahwa ikan pada semua perlakuan mengalami pertumbuhan, sebagai berikut, 7,42 gr/minggu (A), 7,18 gr/minggu (B), 3.44 gr/minggu (e), dan 5,34 gr/minggu (D). Meskipun tingkat pertumbuhan berbeda, tetapi secara statistik tidak ada perbedaan dalam tingkat pertumbuhannya. Hasil ini menunjukkan telah terjadi pertumbuhan compensatory. dan kemungkinan adanya penghematan pakan sebesar 14 - 43%.Kata kunci: nila merah, pertumbuhan ompensatory, tingkat pertumbuhan  The experiment was done to investigate compensatory phenomenon on the of red tilapia (O. niloticus). The experiment was prepared and commenced from the mid of A ugust to the the mid of October 2001 at the hatchery of Marine Science, Undip, In Teluk Awur Jepara, under the laboratory condition. Red tilapias of mean weight of 37.74 g ÷SD 1.16 obtained from the Hatchery were acclimated in seawater conditions. The fish were cultured in the tanks with a density of 5 fish/m3 (12 fish/tank). The treatments were feeding dally (A/control): fish fed 6 days-a day unfed (B),·fish fed 5 days-2 days unfed (C): and fish fed 4 days-3 days unfed (D). Feeding frequency was twice a day with 5% of the biomass. The results showed that all of the fish at the different treatment tended to grows: and the growth rates were A)7.42 g/week, B)7.18 g/week. C)3.44 g/week and D)5.34 g/week. Satistically, however there was no significant difference of the growth rate among the fish (Ancova). The results also suggested that the compensatory growth occurred, and there was a possibility to save the foods about 14 to 43%.Keywords: red tilapia, compensatory growth, growth rate

oai:ojs.ejournal.undip.ac.id:article/2354 2012-03-03T11:58:53Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2354 2012-03-03T11:58:53Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 3 (2004): Jurnal Ilmu Kelautan; 136-140 Kusumaningrum, Hermin Pancasakti; Microbiology Laboratory, Inter-University Center for Biotechnology, Gadjah Mada University, Jalan Tehnika Utara, Barek, Jogjakarta. Microbiogenetics Laboratory, Faculty of Mathematics and Natural Sciences, Diponegoro University, Jl. Prof. Soedarto, UNDIP, Tembalang, Semarang. 50275. Telp. / Fax. 7499494, E-mail : hermin pancasakti<gandasakti@yahoo.com Kusdiyantini, Endang; Microbiogenetics Laboratory, Faculty of Mathematics and Natural Sciences, Diponegoro University, Jl. Prof. Soedarto, UNDIP, Tembalang, Semarang. 50275. Telp. / Fax. 7499494 Yuwono, Triwibowo; Microbiology Laboratory, Inter-University Center for Biotechnology, Gadjah Mada University, Jalan Tehnika Utara, Barek, Jogjakarta Sudarsono, Joedoro; Microbiology Laboratory, Inter-University Center for Biotechnology, Gadjah Mada University, Jalan Tehnika Utara, Barek, Jogjakarta Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2354 en Dunaliella adalah salah satu biota dengan kandungan &beta;-carotene cukup tinggi. Upaya optimalisasi produksi bcarotene pada Dunaliella berhadapan dengan beberapa masalah kultivasi, untuk mendapatkan species yang paling potensial. Hal ini terkait dengan keterbatasan pengetahuan karakteritik ecophysiologi. Alga hijau Dunaliella diketahui dapat tumbuh pada media dengan kandungan garam yang cukup tinggi, namun karena pemahaman characteristik yang keliru dapat menyebabkan identifikasi yang salah pada satu species dalam genus Dunaliella. Kultur laboratoris pada media microcosms berdasarkan salinitas telah dilakukan untuk mengetahui tingkat pertumbuhan dan karakterisasi Dunaliella sp. dari perairan Jepara. Hasil pengamatan menunjukkan bahwa Dunaliella sp. dapat beradaptasi pada salinitas 0 sampai dengan 30 &permil;. Berdasarkan kepada perubahan warna pigmen Dunaliella sp. yang tidak menjadi merah pada media pemeliharaan sampai dengan 25 &permil;, maka jenis yang dijumpai di Jepara mempunyai karakter dan secara taksonomis berafiliasi dengan Dunaliella viridis.Kata kunci: Dunaliella sp, Salinity, Growth, CharacterizationDunaliella is one the most enriched &beta;-carotene eucaryotic organism known. The attempt to optimize bcarotene production from Dunaliella has faced with several problems related to its growth management,which was suspectedly unable to meet the needs of the cultured species. This is primarily because the ecophysiological characteristic affecting growth of Dunaliella have not been sufficiently understood. It wasknown that the halophilic species of the green alga Dunaliella was grown in concentrated salt solutions, but based on this characterization, some misnamed of species in genus Dunaliella also have arisen due to wrongcharacterization understanding. Laboratory cultures and mixed-species microcosms were used to asses the growth and characterization of Dunaliella sp. from Jepara Coastal Region with special emphasis on the several factors that affecting growth of organisms including salinity. The result showed that Dunaliella sp. could adapted to a variety of salt concentration from as low as 0.0 % to salt saturation of about 30 &permil;. Based on its pigment colour that Dunaliella sp. doesn&rsquo;t turn red in the growth on salinities up to 25 &permil;, it can be characterized and affiliated taxonomically as Dunaliella viridis.Key words: Dunaliella sp, Salinity, Growth, Characterization

oai:ojs.ejournal.undip.ac.id:article/44797 2022-09-06T08:34:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/44797 2022-09-06T08:34:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 2 (2022): Ilmu Kelautan; 101-110 Yudiati, Ervia; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Putri, Alifia Nabilla; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Harahap, Akbar; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Azhar, Nuril; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Suryono, Chrisna Adi; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Prabowo, Danang Ambar; Indonesian Culture Collection (InaCC), Research Center for Biology, Research Organization for Life Sciences, National Research and Innovation Agency Alghazeer, Rabia; Department of Chemistry, Faculty of Sciences, University of Tripoli 2022-06-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/44797 Fatty acid; Lipid; Nannochloropsis sp.; Pigment content en Nannochloropsis sp is marine microalga and widely cultured for its benefits. Pigments, lipid, and fatty acid compounds of Nannochloropsis sp are essential elements in the industry. This research aimed to determine the best light intensity on the growth rate, cell density and size, biomass, pigments (chlorophyll a, b, carotenoids), total lipid and fatty acid profile. Nannochloropsis sp. culture was carried out with three light intensity treatments (100, 155, and 180 μmol), with two replications. Periodicity was set up (16:8) with the ratio of dark (8h) to light (16h). The highest cell density and total pigment content of 180 μmol were significantly different (p&lt;0.05) with 155 and 100 μmol. The highest weight of chlorophyll a, b, and carotenoids were found from the intensity of 180 treatment (p &lt; 0.05), followed by 155 and 100 μmol as the smallest one. The bigger cell size was reached from 180 and 155 treatments compared to 100 μmol treatment. The higher wet weight was gained from 155 (564 grams) and followed by 180 μmol (549 grams). The 100 μmol light intensity produced the lowest wet weight (490 gr) (p&lt;0.05). The highest total lipid content was obtained from 155 μmol treatment (0.14 g ww). The microalgae contain SFA/Saturated Fatty Acids (Palmitic, Stearic Acid) and UFA/Unsaturated Fatty Acid (Oleic Acid). The microalgae from 180 μmol produced Eicosanoic acid (Omega-6). The production of certain compounds has differed in light intensity. In the future, the light intensity can be adapted as the alternative solution for producing microalgae for industrial approach, whether for pigments or biodiesel production.

oai:ojs.ejournal.undip.ac.id:article/539 2020-10-25T22:35:54Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/539 2020-10-25T22:35:54Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 1 (2008): Jurnal Ilmu Kelautan; 37-42 Purwati, Pradina Dwiono, Sigit A. P. 2010-11-11 19:29:19 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/539 id Konservasi biota yang tingkat pemanfaatannya sangat tinggi memerlukan pengaturan penangkapan dan sekaligus pemulihannya. Ukuran populasi teripang yang terus menerus dipanen akan menurun dan pada gilirannya mengurangi peluang keberhasilan reproduksi aseksual. Oleh karena itu jumlah minimal individu teripang di suatu habitat harus dipertahankan. Di Indonesia, saat ini teripang semakin sulit ditemukan karena sediaannya di alam terbatas. Produksi benih melalui kegiatan pembenihan belum dapat diandalkan karena jumlah juvenil yang dihasilkan masih sedikit. Sementara itu, beberapa jenis teripang memiliki kemampuan untuk berkembang biak secara aseksual dengan membelah did (fission). Sejak akhir tahun 1990 kemampuan ini mulai diteliti sebagai alternatif teknik memperbanyak individu teripang. Tulisan ini akan membahas perkembangan teknik perangsangan reproduksi aseksual, mengevaluasi kelebihan dan kekurangan reproduksi aseksual dibandingkan seksual serta kemungkinan penerapannya untuk pemulihan populasi. Kata kunci : teripang, reproduksi aseksual, pemulihan.

oai:ojs.ejournal.undip.ac.id:article/8743 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8743 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 2 (2015): Ilmu Kelautan; 61-72 Manik, Henry M 2015-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8743 en Underwater acoustic sampling techniques provide an advantage over traditional net-sampling for zooplankton research. The research presents a methodology for extracting both biological and physical information from high frequency sonar. These methods can easily provide the information that will improve our understanding of the spatial and temporal distribution of zooplankton. Measured acoustic data converted into biological organisms and numerical physics-based scattering models were used in this research. The numerical backscattering process was modeled using the Distorted-Wave Born Approximation (DWBA) to predict the amount of sound scattered by a weakly scattering animal. Both acoustic measurement and DWBA modeled scattering patterns showed that acoustic scattering levels are highly dependent on zooplankton orientation. The acoustic backscattering from zooplankton depends on the material properties (i.e. the sound speed and density of the zooplankton), the shape and size, and the orientation relative to the incident acoustic wave. DWBA model significantly improve the accuracy and precision of zooplankton acoustic surveys. Zooplankton data measurement and DWBA model analysis provide a basis for future acoustical studies.

oai:ojs.ejournal.undip.ac.id:article/67097 2025-06-25T07:35:55Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/67097 2025-06-25T07:35:55Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 2 (2025): Ilmu Kelautan; 274-288 Gusri, Ariqoh Athallah; Environmental Management Study Program, Graduate Program, Universitas Sriwijaya Rozirwan, Rozirwan; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya Putri, Wike Ayu Eka; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya Melki, Melki; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya Isnaini, Isnaini; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya Nugroho, Redho Yoga; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya Mohamed, Che Abd Rahim; Faculty of Science and Technology, Universiti Kebangsaan Malaysia 2025-06-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/67097 Accumulation; Cymodocea; Ecological risk assessment; Heavy metal; Thalassia en Seagrass species thrive in coastal ecosystems and known for their ability to accumulate heavy metals from their surrounding environment. This study aims to evaluate the ecological risks related to the accumulation of heavy metals in seagrass roots, leaves, and sediments. The seagrass examined belong to the genera Cymodocea and Thalassia, collected from two sites: Jeralangan and Cukuh Nyai on Pahawang Island, Lampung, Indonesia. The heavy metals analyzed included Pb, Cu, Ni, and Zn, which were measured using the wet destruction method and quantified with a SHIMADZU AA-7000 Atomic Absorption Spectrophotometer (AAS). The ecological risk was evaluated through various indices, such as the Bioconcentration Factor (BCF), Translocation Factor (TF), Geoaccumulation Index (Igeo), Contamination Factor (Cf), and Pollution Load Index (PLI). The highest concentrations of heavy metals in sediment were detected at station 1 was Zn (15.486 mg.kg-1). In the roots of Cymodocea was Zn (8.772 mg.kg-1), while the highest concentration in leaves was Cu in Thalassia (10.541 mg.kg-1). The ecological risk assessment revealed that BCF &lt; 1 categorize an excluder, while TF &gt; 1 for Pb and Zn indicate effective translocation from roots to leaves. Additionally, Igeo &lt; 0 signify no contamination, Cf &lt; 1 indicate low pollution levels, and PLI &lt; 0 confirm a non-polluted status. In conclusion, the results show that the seagrass ecosystems at the study sites currently have low levels of heavy metal pollution and minimal ecological risk, suggesting they remain in a relatively safe condition.

oai:ojs.ejournal.undip.ac.id:article/2227 2026-04-15T19:25:50Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2227 2026-04-15T19:25:50Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 2 (2006): Jurnal Ilmu Kelautan; 79-86 Kusumaningrum, Hermin Pancasakti; Microbiology Laboratory, Inter-University Center for Biotechnology, Gadjah Mada University, Jalan Tehnika Utara, Barek, Jogjakarta. Microbiogenetics Laboratory, Faculty of Mathematics and Natural Sciences, Diponegoro University, Jl. Prof. Soedarto, UNDIP, Tembalang, Semarang. 50275 Soedarsono, Joedono; Microbiology Laboratory, Inter-University Center for Biotechnology, Gadjah Mada University, Jalan Tehnika Utara, Barek, Jogjakarta. Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2227 en Sintesis karotenoid alami belum pernah melebihi produk sintetik pada skala komersial. Kurangnya pemahaman mengenai aspek mikrobiologis dan ekofisiologis isolat penghasil karotenoid menyebabkan terjadinya kesalahan penamaan spesies. Satu isolat lokal alga hijau dari BBAP Jepara yang digunakan sebagai pakan alami sumber karotenoid hewan-hewan perikanan, pada mulanya dianggap sebagai Dunaliella. Namun pengembangan produksi karotenoid menggunakan teknologi rekayasa genetik dan rekayasa metabolit terhadap isolat algahijau lebih lanjut memperlihatkan ketidaksesuaian hasil dengan penamaan yang ada. Akumulasi karotenoid jalur non-MVA pada alga hijau ditentukan oleh enzim D-1-Deoksixilulosa 5-fosfat Sintase, yang disandi oleh gen D-1-deoksixilulosa 5-fosfat sintase (DXS). Determinasi spesies secara molekuler menjadi penting dilakukan untuk menentukan spesies isolat dan jalur biosintesis karotenoid yang digunakan. Hasil determinasi digunakan untuk analisis keserupaan putative partial fragment gen DXS Isolat alga hijau yang telah berhasil diperolehpada penelitian sebelumnya. Tujuan utama penelitian ini adalah menentukan spesies satu isolat lokal alga hijau secara molekuler menggunakan 23S rRNA untuk mendeteksi keberadaan gen DXS penyandi biosintesis karotenoid. Hasil penelitian memperlihatkan bahwa Isolat alga hijau menunjukkan keserupaan yang tinggi dengan anggota-anggota Sianobakteria. Keserupaan tertinggi dimiliki dengan  Cyanobacterium sp. MBIC 1021 sebesar 99 %, diikuti Synechocystis PCC6308 sebesar 95 %. Satu-satunya anggota Cyanobacteria yangmemiliki gen DXS adalah Synechocystis. Hasil analisis keserupaan parsial gen DXS isolat alga hijau terhadap tujuh parsial gen DXS pada daerah lestari yang telah ditemukan, memperlihatkan bahwa putative partialfragment gen DXS Isolat lokal alga hijau juga memiliki keserupaan tertinggi dengan gen DXS Sianobakteria Synechocystis.Kata kunci: isolasi alga hijau, Dunaliella, gen DXS, 23S rRNA, Cyanobacteria, SynechocystisCarotenoids production levels are not yet competitive with carotenoid levels presently produced by fermentation, synthesis and isolation. It needs application of metabolic engineering and genetic engineeringtechniques in improving their production. An attempt to optimize carotenoid production from local isolate of green algae from BBAP Jepara has faced several problems, primarily related to the microbiological and ecophysiological characteristic which affecting growth that have not sufficiently been understood. A misnamed of species also have arisen due to wrong characterization. One local isolate of an algal species from BBAPJepara was found potentially useful as source of carotenoids in food additives or as food supplement in fish farming. It was suspected as representing a strain of Dunaliella. Previous studies to improve carotenoidproduction using molecular approach on have shown unagreement. Therefore, the present study aimed to determinate the species of green algae isolate from Jepara waters based on molecular techniques using 23S rRNA approach for detecting DXS gene. Molecular analysis by 23S rRNA alignment showed the close relationship among isolate of green algae and most all of member of Cyanobacteria. Closest similarities wasshowed by Cyanobacterium sp. MBIC 1021 with 99 % similarity and Synechocystis PCC6308 with 95 % similarity. Synechocystis was the only member of Cyanobacteria which have DXS gene. Multiples aligmentsequences of partial DXS gene on the conserve region among seven species confirmed this result. The DXS gene analysis also showed closest relationship between partial DXS gene of Cyanobacteria Synechocystis anda green algae isolate. The result of this analysis proven as valuable parameter for the interpretation of the relation among DXS gene of a green algae isolate and Cyanobacteria and increase the possibility in getting the complete DXS gene from local isolate of green algae by designing primers from DXS gene of Synechocystis as a member of Cyanobcteria.Key words: a green algae isolate, Dunaliella, DXS gene, 23S rRNA, Cyanobacteria, Synechocystis

oai:ojs.ejournal.undip.ac.id:article/20320 2021-10-13T03:32:51Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/20320 2021-10-13T03:32:51Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 1 (2019): Ilmu Kelautan; 41-50 Adytia, Didit; School of Computing, Telkom University Husrin, Semeidi; Research Scientist on Applied Oceanography Marine Research Centre The Agency for Research & Human Resource Development, Ministry of Marine Affairs & Fisheries Latifah, Arnida Lailatul; Research Center for Informatics, Indonesian Institute of Sciences 2019-02-28 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/20320 tsunami wave; mangrove; shallow water equations; wave dissipation; finite volume; staggered grid. en In this paper, we study a dissipation of solitary wave due to mangrove forest by using numerical simulation. Here, the solitary wave is chosen to represent tsunami wave form.  To simulate the wave dynamic, we use the non-dispersive Nonlinear Shallow Water Equations (NSWE). The model is implemented numerically by using finite volume method in a momentum conservative staggered grid. By using the proposed numerical scheme, the numerical code is able to simulate solitary wave breaking phenomenon. Wave dissipation due to mangrove forest is modelled as bottom roughness with an approximate value of manning roughness, which is derived from the classical Morisson’s formula. To test the modelled dissipation by mangrove forest, we reconstruct a physical experiment in hydrodynamic laboratory where a solitary wave propagates above a sloping bottom, which has a parameterized mangrove in the shallower part.  Two cases are performed to test the performance of the numerical implementation, i.e. the non-breaking and breaking solitary waves. Results of simulation agree quite well with the measurement data. The results of simulation are also analyzed quantitatively by calculating errors as well as correlation with the measurement data. Moreover, to investigate effects of wave steepness on solitary wave, to the reduction of wave energy, we perform numerical investigation. Various solitary waves with different wave steepness are simulated to see their effects on amplitude and energy reduction due to mangrove forest.

oai:ojs.ejournal.undip.ac.id:article/3644 2017-08-19T22:45:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/3644 2017-08-19T22:45:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 2 (2012): Ilmu Kelautan; 74-80 Akhwady, Rudhy; Balitbang Kelautan dan Perikanan KKP RI Jakarta Jl. Pasir Putih 1, Ancol Timur Jakarta utara, HP 085784883809 Mukhtasor, Mukhtasor; Jurusan T. Kelautan FTK-ITS, Surabaya, Indonesia Jl. Arif Rahman Hakim Surabaya 60111 Armono, Haryo D; Jurusan T. Kelautan FTK-ITS, Surabaya, Indonesia Jl. Arif Rahman Hakim Surabaya 60111 Musta’in, Mahmud; Jurusan T. Kelautan FTK-ITS, Surabaya, Indonesia Jl. Arif Rahman Hakim Surabaya 60111 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/3644 en Gesekan antar luas permukaan terumbu buatan dengan gelombang dapat menyebabkan hambatan aliran, sehingga menyebabkan turunnya energi gelombang. Untuk itu perlunya direncanakan kesesuaian antara luas permukaan dengan model bentuk terumbu, sehingga diperoleh tingkat reduksi dan stabilitas agar struktur dapat bekerja dengan optimal. Hal ini dengan mempertimbangkan kinerja aliran yang terjadi denganmemberikan porositas aliran agar dapat mengalir melalui celah-celahnya sehingga gesekan antara gelobang dengan struktur terumbu buatan tidak akan berlangsung secara ekstrim dan terus menerus, dikarenakanmembahayakan struktur tersebut. Hasil pengujian di laboratorium wave flume dengan menggunakan gelombang tipe irreguler menunjukkan bahwa, untuk memperbesar peredaman gelombang dilakukan dengan memperkecil nilai koefisien transmisi, yaitu dengan cara memperbesar kecuraman gelombang, memperbesar lebar puncak relatif dan memperkecil freeboard. Dengan semakin kecil diameter rongga dan jumlah rongga yang sedikit, kemampuan reduksi juga makin meningkat di bandingkan dengan rongga yang berjumlah sama tetapi berdiameter lebih besar. Dari hasil penelitian ini, diharapkan nantinya dapat menjadi sumber informasi tentang kinerja terumbu buatan model bottle, dan dapat gunakan sebagai salah satu alternatif struktur habitat buatandan peredam gelombang yang dapat bekerja secara optimal dengan memperhatikan dan aspek lingkungan.Kata kunci: bottle reef, submerged breakwater, porositas, transmisi&nbsp;Interaction among reef surface with ocean wave, causing current barrier that might reduce wave energy. Therefore it was necessary to plan a compatibility of surface and shape in order to gain a degree of reductionand stability so that structure could work optimally. This consider the occurrences of current performance by giving porosity for current to be able to flow through its gap so that the friction between wave and structurewould not take place in an extreme way continuously that would jeopardize the structure. The result test of wave flume in laboratory with irreguler wave showed that to increase wave damping it was done by enlarging and reducing the peak relative width of freeboard. By having smaller porous diameter and smaller amount of porous, the ability of reduction will also increase compare to same amount of porous but had bigger porous diameter. Finally, this result could be as an information in project of bottle reef, and could also be used as one of marine habitat structure and wave damping alternative that worked optimally and had an environmental friendly view. Key words: bottle reef, submerged breakwater, porosity, transmission

oai:ojs.ejournal.undip.ac.id:article/50589 2023-05-21T03:05:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/50589 2023-05-21T03:05:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 1 (2023): Ilmu Kelautan; 69-80 Badriana, Mochamad Riam; Korea-Indonesia Marine Technology Cooperation Research Center Nur, Ashadi Arifin; Korea-Indonesia Marine Technology Cooperation Research Center Hidayatullah, Arsy Ilham; Korea-Indonesia Marine Technology Cooperation Research Center Prastyo, Abi Widyananto; Korea-Indonesia Marine Technology Cooperation Research Center Bernawis, Lamona Imudyati; Program Study of Oceanography, Faculty of Earth Sciences and Technology, Institut Teknologi Bandung Jeon, Chungkyun; Korea-Indonesia Marine Technology Cooperation Research Center Radjawane, Ivonne Milichristi; Korea-Indonesia Marine Technology Cooperation Research Center Program Study of Oceanography, Faculty of Earth Sciences and Technology, Institut Teknologi Bandung Park, Hansan; Korea Institute of Ocean Science and Technology Korea-Indonesia Marine Technology Cooperation Research Center||Indonesia 2023-03-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/50589 ocean parameter; seasonal; heavy-metal en West part of Cirebon in the past suffered an extraordinary event due to poisonous food found in green mussel. It is necessary to monitor current water quality over this region since this area still used for green mussel cultivation area. In-situ measurement and laboratory analysis were done to monitor the condition of seawater around Gunungjati as part of green mussel cultivation area in Cirebon regency. Several points had been measured through CTD Valeport Midas+ in prior to measure physical (temperature, salinity, pH, chlorophyll-a, turbidity) and chemical seawater (dissolved oxygen, Nitrate, Orthophosphate, Hg, Pb, Cd concentration) characteristics, meanwhile water sample had been brought to laboratory to be checked its heavy metal concentration. Additionally, past study and data related to green poison event in Cirebon was taken account into observation and analysis. Seasonal result show slightly different value though vertical distribution data where temperature (30.1°–32.3°C), salinity (26.9–32.0 psu), and pH (7.5–8.7) are high in December but lower in July, meanwhile, chlorophyll-a (0.2–20.9 mg.L-1), dissolved oxygen (0.2–7.8 mg.L-1), and turbidity (1.3–20.1 NTU) are increasing in October. Nitrate and orthophosphate concentration find in water sample is 0.097–0.537 mg.L-1 and &lt;0.01–0.32 mg.L-1, respectively. Parameters of Cd (&lt;0.001 mg.L-1), Hg (&lt;0.00014 mg.L-1), and Pb (&lt;0.001 mg.L-1) are still below the threshold. The condition of seawater of west part of Cirebon or at cultivation area is still in moderate condition based on the national standard. Although, turbidity and dissolved oxygen is still above the standard quality.

oai:ojs.ejournal.undip.ac.id:article/586 2012-02-27T23:57:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/586 2012-02-27T23:57:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 1 (2007): Jurnal Ilmu Kelautan; 18-23 Sabdono, Agus; Jurusan Ilmu Kelautan, FPIK, Universitas Diponegoro Semarang Tilp. (024)-7474698; E-mail: agus_sabdono@yahoo.com 2010-11-22 05:57:17 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/586 id Biofouling sebagai hasil dari proses penempelan organisme fouling pada berbagai struktur dilingkungan laut&nbsp;telah&nbsp;menimbulkan banyak kerugian bag! pelaku industri kelautan. Aplikasi cat pelindung&nbsp;antifoulant komersial&nbsp;yang&nbsp;komponen utamanya adalah logam berat seperti, TBT(tri-n-butyl&nbsp;tin),&nbsp;tembaga, telah&nbsp;berkembang menjadi&nbsp;masalah baru sehingga memerlukan cat pelindung yang ramah lingkungan. Bakteri yang berasosiasi&nbsp;dengan&nbsp;organisme di lingkungan laut diketahui menghasilkan metabolit sekunder sebagai sumber&nbsp;senyawa alternatif&nbsp;antifoulant. Bakteri Pelagiobacter variabilis UPS3.37 digunakan sebagai bahan ekstrak kasaryangdiformulasikan&nbsp;dengan cat untuk uji mikrofouling dan makrofouling di lapangan. Hasil penelitian menunjukkan&nbsp;bahwa ekstrak&nbsp;kasar P. variabilis UPS3.37 mempunyai aktifltas antifouling terhadap bakteri fouling. Pada uji&nbsp;makrofouling&nbsp;menunjukkan bahwa pemberian ekstrak kasar tanpa campuran cat mampu menurunkan jumlah&nbsp;penempelan&nbsp;bamakel. Teriihat adanya pola semakin tinggi konsentrasi ekstrak kasar semakin meningkatkan aktivitasantifouling.&nbsp;Berdasarkan karakter fenotip tersebut, bakteri P. variabilis UPS3.37 dapat digunakan sebagai&nbsp;organisme&nbsp;probiotik untuk antifouling di dalam menghilangkan penempelan bakteri pada biofilm.Kata kunci: antifouling, Pelagiobacter variabilis UPS3.37, barnakelMarine biofouling, despite a natural process as a result of organism growth on underwater surfaces that causeshuge economic losses to marine industries. Problems with heavy metal antifouling compounds, such as, TBT,copper have highlighted the need to develop new environmentally friendly antifouling coatings.Bacteria isolated from living surfaces in the marine environment are a promising source of natural antifoulingcompounds. Pelagiobacter variabilis UPS3.37 used to produce crude extract that was formulated with coatingpaints for microfouling and macrofouling assay in the field. The results showed activity against a test panel offouling bacteria. Further tested for their ability to inhibit the settlement of barnacle caused a decrease in thenumber of settled barnacles on crude extract without containing paint. The activity pattern showed that themore the crude extract, the higher the antifouling activity. This phenotype is important for the bacterium&rsquo;suse as a probiotic organism for novel antifouling or removing bacteria attached in a biofilm.Key words : antifouling, Pelagiobacter variabilis UPS3.37, barnacle

oai:ojs.ejournal.undip.ac.id:article/11758 2020-04-17T06:03:53Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/11758 2020-04-17T06:03:53Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 3 (2016): Ilmu Kelautan; 117-122 Rumahlatu, Dominggus; Biology Education Study Program, FKIP, Pattimura University Huliselan, Estevanus K.; Physics Study Program, FKIP, Pattimura University 2016-08-31 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/11758 en Contamination of mercury (Hg) in the sea is one of global issues, including the waters of bay inside the Ambon Island. This research was conducted to monitor heavy metal pollution (Hg) in Ambon bay using Apogon beauforti. This study was conducted by using exploratory survey on physical-chemical environmental factors (temperature, salinity, pH, DO). Hg levels in water, sediments, and A. beuforti were measured, as well as the differences in the morphology of the gills of fish. The sampling technique used in this research was a purposive sampling technique. The environmental factor data were collected in-situ during east and the west season in year 2013 and 2014. The levels of mercury were measured by Atomic  Absorbsion Spectrophotometer (AAS). Data were analysed by descriptive statistics. The results showed increasing temperature, salinity and pH within one year (2013-2014) at four different stations. There was a decrease in the levels of Hg concentration in sea water, sediments and A. beauforti at four stations, even though it still remained above the Threshold Limit Value (TLV). The gills of A. beauforti showed dark red, pale and blackish colors indicating the accumulation of heavy metals Hg. Keywords: monitoring, marine pollution, heavy metals Hg, Apogon beauforti, Ambon

oai:ojs.ejournal.undip.ac.id:article/80383 2026-02-27T19:11:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/80383 2026-02-27T19:11:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 1 (2026): Ilmu Kelautan; 49-60 Yudiati, Ervia; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Trianto, Agus; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Sarjito, Sarjito; Department of Aquaculture, Faculty of Fisheries and Marine Science, Universitas Diponegoro Utami, Diah Ayu Satyari; Department of Aquaculture, Marine and Fisheries Polytechnic of Jembrana Karim, Murni; International Institute of Aquaculture and Aquatic Science, University Putra Malaysia Azhar, Nuril; Program Study of Fisheries, Marine Technology and Business, Universitas Diponegoro 2026-03-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/80383 Alginate; Immune; Gene Expression; Shrimp; Spirulina; Vibrio en Litopenaeus vannamei is a key species in global aquaculture; however, its susceptibility to vibriosis presents a persistent challenge. The aim of this study was to investigate the effects of dietary supplementation with alginate and Spirulina hot water extract (SWE) on the immune response and gene expression associated with pathogen resistance. Shrimp fed diets containing 3 g·kg⁻¹ of alginate and 5 mg·kg⁻¹ of SWE exhibited marked improvements in immune parameters, including total hemocyte count, phagocytic activity, phagocytic index, phenoloxidase activity, and superoxide dismutase levels, as measured on days 3 and 7 (P&lt; 0.05). Following challenge with Vibrio parahaemolyticus, V. vulnificus, and V. harveyi, treated shrimp demonstrated a 90% survival rate compared to 0% in the control group. Gene expression analysis revealed a 2-fold and 1.5-fold upregulation of prophenoloxidase (proPO) and lipopolysaccharide β-glucan binding protein (LGBP), respectively, indicating the activation of the proPO cascade and pathogen recognition pathways. These results provide direct evidence that alginate and SWE act as immunostimulants by modulating hemocyte function and immune-related gene expression. The findings of the present study suggest that oral supplementation with these natural bioactive compounds can serve as a functional dietary strategy to enhance disease resilience in shrimp and promote more sustainable aquaculture systems, in seven days period.

oai:ojs.ejournal.undip.ac.id:article/2267 2012-02-28T21:37:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2267 2012-02-28T21:37:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 4 (2005): Jurnal Ilmu Kelautan; 221-228 Juniarta, Rohani; Jurusan Ilmu Kelautan FPIK Universitas Diponegoro, Semarang, Indonesia Aisyah, Errien N; Jurusan Ilmu Kelautan FPIK Universitas Diponegoro, Semarang, Indonesia Telp/Fax : 62.24.7474698 Munasik, Munasik; Jurusan Ilmu Kelautan FPIK Universitas Diponegoro, Semarang, Indonesia Telp/Fax : 62.24.7474698 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2267 en Karang hidup bersimbiosis dengan zooxanthellae, dimana karang mendapat zat-zat makanan dan O2 sebagai hasil fotosintesis dan sebaliknya zooxanthellae mendapat perlindungan, zat hara dan CO2. Hubungan simbiosis mutualisme ini dipengaruhi faktor biotik dan&nbsp; abiotik. Jika salah satu faktor tersebut melewati batas normal dapat mengakibatkan karang memutih atau &ldquo;bleaching&rdquo; dan untuk memulihkannya kembali memerlukan waktu yang lama. Salah satu cara yang dilakukan adalah dengan memakai teknik translokasi dan transplantasi. Untukpelaksanaan teknik ini, dipilih karang Acropora aspera dan Stylophora pistillata dan dilakukan pengamatan terhadap densitas zooxanthellae dari ke dua karang tersebut. Karang dipindahkan dari perairan P. Panjang dan ditanam di perairan Teluk Awur Jepara. Pada akhir waktu penelitian, A. aspera bisa bertahan hidup sedang S. pistillata mengalami kematian. Pengamatan terhadap densitas zooxanthellae, yang meliputi zooxanthellae sehat, berproliferasi dan terdegradasi selama penelitian, menunjukkan adanya fluktuasi tergantungdari kondisi karang.Kata kunci: zooxanthellae, translokasi, transplantasi, A. aspera, S. pistillata.Life corals perform symbioses with zooxanthellae, where corals get nutritions and O2 as photosynthesize results of zooxanthellae, whereas zooxanthellae get shelter, trace elements and CO2. This mutual symbioticrelation is affected by biotic and abiotic factors. If one of these factors is beyond the normal limit, it can cause the corals exposed to bleaching, and it will take a long time for the corals to be recovered. One of themethods to manage this is by using translocation and transplantation techniques. For this purpose, Acropora aspera and Stylophora pistillata were used and zooxanthellae density of both corals was analysed. The coralswere moved from Panjang Island waters and transplanted in Teluk Awur waters. At the end of the analyses, A. aspera could survive but S. pistillata was bleaching. Analyses on the zooxanthellae densities, consisting ofthe healthy, proliferated and degradated zooxanthellae, show fluctuations depending on corals condition.Key words: zooxanthellae, translocation, transplantation, A. aspera, S. pistillata.

oai:ojs.ejournal.undip.ac.id:article/29533 2021-10-13T00:57:04Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/29533 2021-10-13T00:57:04Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 3 (2020): Ilmu Kelautan; 97-102 Rachmawati, Farida Nur; Jenderal Soedirman University Sistina, Yulia; Jenderal Soedirman University 2020-09-02 21:15:50 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/29533 Anguilla bicolor; masculinization; population density Universitas Jenderal Soedirman en In general, female eel dominates the results of catching eel in the river. Male fish dare rarely found in nature, therefore masculinization is necessary for obtaining in males.  The administration of 17α-methyltestosterone  to masculinize Anguilla bicolor McClelland.   It is a synthetic anabolic-androgenic steroid which has potential to endocrine disrupter that disturbed function of normal reproduction in human or animal. It urgently needed that a masculinization technique needs to study the use of an environmental factor. Population density is one of the environmental factors that influence gender determination (ESD-environmental dependent sex determination). This will result in increased cortisol secretion, which will further stimulate the synthesis of 11-KT steroids that affect male gonad differentiation. This study aims to induce masculinization in tropical eel Anguilla bicolor McClelland in different density. Three treatments and three replicates conducted the research. The treatments were one fish.48 L-1, two fish.48 L-1   and three fish.48 L-1.  Eels size was approximately similar, at 16,78 g±0,62 in weight, and 25,38 cm±0,15 in length were either culture in brackish water for eight weeks. The results showed that density population treatment significantly increased the Fin Index (P&lt;0.05), but no sign for Eye Index, GSI, HSI, and testosterone level. The highest male population (77,8%) achieves at the highest density treatment, three fish.48 L-1 population density. It can be concluded, based on reproductive observations, population density does not affect gonad maturity/puberty, but the high population density (3 fish.48 L-1)stimulates Anguilla bicolor McClelland masculinization.

oai:ojs.ejournal.undip.ac.id:article/11932 2021-10-13T05:29:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/11932 2021-10-13T05:29:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 3 (2017): Ilmu Kelautan; 111-120 Rochman, Fathur; Loka Penelitian Perikanan Tuna Pusat Penelitian dan Pengembangan Perikanan Badan Penelitian dan Pengembangan Kementerian Kelautan dan Perikanan Jatmiko, Irwan; Loka Penelitian Perikanan Tuna Pusat Penelitian dan Pengembangan Perikanan Badan Penelitian dan Pengembangan Kementerian Kelautan dan Perikanan Setyadji, Bram; Loka Penelitian Perikanan Tuna Pusat Penelitian dan Pengembangan Perikanan Badan Penelitian dan Pengembangan Kementerian Kelautan dan Perikanan 2017-08-22 13:09:25 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/11932 Loka Penelitian Perikanan Tuna (Research Institute for Tuna Fisheries) Bali-Indonesia en This study highlighted the occurrence of the Indonesian tuna longline fishery targeting albacore (Thunnus alalunga) caught in the Eastern Indian ocean. The data used in this study based on the Research Institute for Tuna Fisheries (RITF) observer program in Benoa. This paper presents the current information on biological aspect (size distribution and length-weight relationship) and fish behavior (swimming layer and feeding periodicity) of albacore. Total albacore samples of  3,152 were taken from scientific observer data from 2010-2013. The study area of albacore was between 0-33°S and 75-131°E. Albacore length  distributed from 70-196 cmFL (median=93 cmFL, mode=100 cmFL, mean=92.12 cmFL) and dominated at size of 95 cmFL. The highest percentage length of albacore was  &gt;90 cm (L50) occured in the area between (30-35°S and 80-95°E) and (10-15°S and 120-125°E). The length weight relationship was determined to be W=0.0045 FL1.8211  (W in kg, FL in cm). The expected season to catch the ALB was from April to July with the peak season in June and July. The swimming layer of albacore based on minilogger data were distributed from at 118 to 341 m depth and mostly catch at depth of 156 m with temperature degree 18°C.  The feeding periodicity of albacore’s are start from 7:45am to 17:59 pm, mostly active at 10 am to 11 am. The majority of ALB caught by Indonesian longliner was mature condition and negative allometric growth. The ALB peak season was in June-July and the best time to catch was 10 am to 11 am at depth of 156 m. Keywords : albacore, feeding periodicity, swimming layer,  CPUE

oai:ojs.ejournal.undip.ac.id:article/2298 2012-03-01T08:43:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2298 2012-03-01T08:43:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 2 (2005): Jurnal Ilmu Kelautan; 115-118 Setyati, Wilis A; Jurusan Ilmu Kelautan, FPIK-Universitas Diponegoro, Semarang Su8bagiyo, Subagiyo; Jurusan Ilmu Kelautan, FPIK-Universitas Diponegoro, Semarang Ridlo, Ali; Jurusan Ilmu Kelautan, FPIK-Universitas Diponegoro, Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2298 en Penelitian ini bertujuan untuk mempelajari status nutrisi berbagai jenis lamun yang terdapat diperairanBandengan, Jepara berdasarkan analisis proksimat (gula reduksi, serat kasar, lemak, protein dan abu). Penelitian ini juha melakukan analisis vegetasi lamun di perairan Bandengan, Jepara. Hasil penelitian menunjukan ada 6 jenis lamun yang tumbuh di perairan Bandengan Jepara yaitu Cymodecea serrulata, Thalassia hemprichii, Enhalus acoroides, Syrirgodium isoetifolium, Halodule uninervis dan Thalassodendron ciliatum. Keenam jenis lamun tersebut berturut-turut mempunyai kepadatan 109,00 ind/m2, 106,87 ind/m2, 89,35 ind/m2 , 82,97ind/m2 , 73,65 ind/m2 dan 18,75 ind/m2. Hasil analisis proksimat utuk ke enam jenis lamun tersebut berturut turut adalah sebagai berikut, Cymodecea serrulata mempunyai kandungan protein, gula reduksi, lemak, abu dan serat kasar berturut-turut (% berat kering) 9,39 ; 0,91; 7,81; 67,09; 19,25, Thalassia hemprichii berturut turut 8,35; 1,10 ; 7,38; 62,43; dan 17,27, Enhalus acoroides berturut-turut 7,65 ; 1,00; 6,13 ; 68,14 ; dan 19,92, Syrngodium isoetifolium berturut-turut 5,52 ; 2,19; 4,71; 70,62 dan 12,16. Sedangkan Halodule uninervis dan Thalassodendron ciliatum tidak dilakukan analisis proksimat karena jumlah vegetasi yang adasangat sedikit.Kata kunci : Lamun, analisis proksimat, analisis vegetasiThe research was done to answer how about nutritive profile (protein, lipids, reduction sugar ash and crudefibre) of some seagrass and how about some seagrasses can be improved potentially as foodhealthness. In this research vegetaion analyze or seagrasses also was done, to identified rheir diversity and density. The research found 6 species of seagrass in seagrass filed of Bandengan waters, Jepara, i.e. Cymodecea serrulata, Thalassia&nbsp; hemprichii, Enhalus acoroides, Syrirgodium isoetifolium, Halodule uninervis dan Thalassodendron ciliatum. There have population density respectively 109,00 ind/m2, 106,87 ind/m2, 89,35 ind/m2 , 82,97 ind/m2, 73,65 ind/m2 and 18,75 ind/m2.The result of proximate analyze showed that Cymodecea serrulata haveprotein , sugar reduction, lipid, ash and crude fibre (% dry weight) respectively 9,39 ; 0,91; 7,81; 67,09;19,25, Thalassia hemprichii 8,35; 1,10 ; 7,38; 62,43; dan 17,27, Enhalus acoroides 7,65; 1,00; 6,13; 68,14 ; and 19,92, Syrngodium isoetifolium 5,52 ; 2,19; 4,71; 70,62 and 12,16. Halodule uninervis and Thalassodendron&nbsp; ciliatum have not beeb abalyzed.Key words: seagrass, proximate analysis, vegetation analysis.

oai:ojs.ejournal.undip.ac.id:article/33905 2021-10-13T00:50:47Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/33905 2021-10-13T00:50:47Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 2 (2021): Ilmu Kelautan; 71-78 Ighwerb, Mostafa Imhmed; Faculty of Marine Resources, Asmarya Islamic University Hutabarat, Johannes; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Yudiati, Ervia; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Pribadi, Rudhi; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Widianingsih, Widianignsih; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Hartati, Retno; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Nur II, Abidin; Marine Center for Brackishwater Aquaculture Development Fauziah, Arumning T.; Department of Marine Sciences, Faculty of Fisheries and Marine Sciences, Diponegoro University Hidayati, Jelita Rahma; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University 2021-05-27 22:23:26 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/33905 Optimum; development; gut; growth; diet en The gut capacity of shrimp larvae is minimal, and their digestion is often challenged by the inevitable fact that they tend to develop slowly during the zoea stage. Many studies approved that the digestive capacity of shrimp larvae could be improved by increasing the retention time of food in the intestine. Gut evacuation time and fullness of the gut are crucial parameters in assessing the growth of shrimp larvae, and the diet as well as  environmental conditions indeed influence the activity of these parameters. Although many species of shrimps have a wide salinity tolerance, more specific research on salinity and its relation to the type of diet is necessary to find the optimum condition supporting the growth of shrimp larvae. By employing Penaeus merguiensis larvae, this study evaluates the effect of three nominal salinities (28, 32, and 36 ppt) and types of diets (Diet A: 100% live feed; Diet B: 100% FRIPPAK; Diet C: a combination of Diet A and Diet C, 50 % each) toward the fullness of gut and gut evacuation time of the newly introduced Penaeus merguiensis larvae culture. The result showed that the longest gut evacuation time and the highest percentage of gut's fullness were found in all Zoea reared with Diet A at salinity 28 and 32 ppt; Zoea-1 at 28 ppt with Diet A; Zoea-2 at 32 ppt with Diet A; Zoea-3 at 32 ppt with Diet A. Longer gut evacuation time would have an impact on the higher percentage of the fullness of gut. The higher fullness of the gut also indicates that the larvae have the best capacity to produce energy and achieve optimum growth.

oai:ojs.ejournal.undip.ac.id:article/7211 2020-04-17T05:58:57Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7211 2020-04-17T05:58:57Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 1 (2014): Ilmu Kelautan; 11-18 Pradnawati, Mea; Marine Science Study Program, Faculty of Fisheries and Marine Sciences, Diponegoro University Jl.Prof. Soedarto SH, Tembalang, Semarang, Indonesia. 50275 Wijayanti, Diah Permata; Marine Science Study Program, Faculty of Fisheries and Marine Sciences, Diponegoro University Jl.Prof. Soedarto SH, Tembalang, Semarang, Indonesia. 50275 Ambariyanto, Ambariyanto; Marine Science Study Program, Faculty of Fisheries and Marine Sciences, Diponegoro University Jl.Prof. Soedarto SH, Tembalang, Semarang, Indonesia. 50275 2014-03-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7211 en Keberhasilan pemeliharaan planula karang membutuhkan dorongan pada planula untuk menempel pada substrat. Neuropeptida komersial Hym-248 diketahui mampu mendorong planula untuk menempel. Waktu pemberian peptida mempengaruhi penempelan dan metamorfosis planula. Penelitian ini bertujuan untuk mendeskripsikan perbedaan penempelan dan metamorfosis planula karang yang diberi peptida Hym-248 pada usia 1 hari dengan planula karang yang diberi peptida Hym-248 pada usia 6 hari. Penelitian ini menggunakan slick (kumpulan gamet yang dilepaskan koloni karang dari berbagai spesies yang melakukan spawning serentak) yang berasal dari perairan Pulau Sambangan, Kepulauan Karimunjawa. Planula diberi Hym-248 dengan konsentrasi 1×10-7 M dan 1×10-5 M untuk planula umur enam hari dan 1×10-7 M, 1×10-6 M,  dan 1×10-5 M untuk planula umur satu hari. Planula yang diberi Hym-248 pada usia 1 hari sudah mulai menempel pada jam ke-4 dan mulai bermetamorfosis pada jam ke-120, sedangkan planula yang diberi Hym-248 pada usia 6 hari tidak mengalami penempelan dan metamorfosis sama sekali hingga akhir penelitian. Keberhasilan menempel tertinggi terjadi pada planula yang diberi Hym-248 dengan konsentrasi 1×10-6 M sebanyak 5.83% pada jam ke-192. Penempelan dan metamorfosis planula dari slick yang diberi Hym-248 pada usia 1 hari lebih baik dari planula yang diberi Hym-248 pada usia 6 hari. Penelitian ini memberi harapan untuk memproduksi benih karang secara masal menggunakan benah yang berasal dari reproduksi seksual. Kata kunci: penempelan, metamorfosis, planula karang, slick, Hym-248 The success of coral planulae rearing needs stimulant for planulae to attach onto substrate. Commercial neuropeptide Hym-248 is known to induce planulae to metamorphose and settle. The timing to add peptide affects planulae attachment and metamorphosis. This research was aimed to describe the difference of  settlement and metamorphosis in coral planulae added Hym-248 at the age of 1 day and 6 days. This research used a slick, egg-spem bundles released from multi-specific spawning corals. The study conducted at Sambangan Island, Karimunjawa Islands. Planulae were added with Hym-248 at concentration of 1×10-7 M and 1×10-5 M for 6 days old planulae and 1×10-7 M, 1×10-6 M,  and 1×10-5 M for 1 day old planulae. The highest settlement rate was observed on the planulae treated with 1×10-6 M dose of Hym-248 at 144th hour with percentage of settled planulae was 32.08%. However, only 5.83% were metamorphosed after 60 hrs observation. One day old planulae incubated with Hym-248 started to attach at 4th hour and metamorphosed at 120th hour, whereas none of 6 days planulae attach or metamorphose until the end of the experiment. This study suggested that incubated planulae in Hym-248 media will give a better result when planulae are at one day old. This study highlight the possibility to produce mass-seedling colonies using sexually derived planulae. Keywords: settlement, metamorphosis, coral planulae, slick, Hym-248

oai:ojs.ejournal.undip.ac.id:article/64839 2024-12-10T15:14:41Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/64839 2024-12-10T15:14:41Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 3 (2024): Ilmu Kelautan; 403-413 Srikandace, Yoice; School of Life Sciences and Technology, Institut Teknologi Bandung Research Center for Biomass and Bioproducts - National Research and Innovation Agency Syani, Ira Rhabbiyatun; School of Life Sciences and Technology, Institut Teknologi Bandung Wahhaab, Aisha; School of Life Sciences and Technology, Institut Teknologi Bandung Kamarisima, Kamarisima; Microbial Biotechnology Research Group, School of Life Sciences and Technology, Institut Teknologi Bandung Putri, Sastia Prama; Microbial Biotechnology Research Group, School of Life Sciences and Technology, Institut Teknologi Bandung Department of Biotechnology, Graduate School of Engineering, Osaka University||Japan Industrial Biotechnology Initiative Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University||Japan Aditiawati, Pingkan; Microbial Biotechnology Research Group, School of Life Sciences and Technology, Institut Teknologi Bandung 2024-09-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/64839 Antibacterial; Benzofuran; Drug-likeness; Oxazolidone; Streptomyces; molecular-docking en Streptomyces aureofaciens widely produces the antibiotic tetracycline and many other compounds during fermentation. The compounds have yet to be known for their antibacterial potential. This work aims to determine new antibiotics or other possible antibacterial compounds produced by marine S.aureofaceiens A3 through an in silico molecular docking method. The ethyl acetate (EA) extracts from fermented marine S. aureofaciens A3 in ISP4 medium enriched with seawater components showed strong antibacterial activity.  The antibacterial activity of EA extracts during 6-12 days of fermentation was carried out by the Kirby-Bauer method and the compounds of EA extracts were analyzed by GC/MS. Compounds identified by GC/MS were ligands for an in silico molecular docking study against four target proteins (DNA gyrase, topoisomerase IV, PBP 1a, and DHFR) of pathogenic bacteria. The drug-likeness of selected chemicals as antibacterial agents was assessed using Lipinski's Rule of Five. The results showed the prospective compounds as a narrow-spectrum antibacterial, including 3,5-di-tert-Butyl-4-hydroxyphenylpropionic acid against PBP 1a and Benzenepropanoic acid, and 3,5-bis (1,1-dimethyl ethyl)-4-hydroxy-, methyl esters against DHFR. Substances with broad-spectrum antibacterial activity, such as 3-Acetylphenanthrene and 3-(p-Ethoxyphenyl)-5-(O-tolyloxymethyl)-2-oxazolidone, against multitarget DNA gyrase B and DHFR, 7,9-Di-tert-butyl-1-oxaspiro (4,5) Deca-6,9-diene-2,8-dione against PBP1a and DHFR, and isobenzofuro [5,6-b] benzofuran-8-carboxylic acid, 1,3-dihydro-7,10-dimethoxy-9-methyl-1-oxo-, methyl ester against DNA gyrase B, PBP 1a, and DHFR. On the 12th day of fermentation, two compounds were identified: isobenzofuro[5,6-b] benzofuran-8-carboxylic acid, 1,3-dihydro-7,10-dimethoxy-9-methyl-1-oxo-, methyl ester, and 3-(p-Ethoxyphenyl)-5-(O-tolyl oxy methyl)-2-oxazolidone.  This is the first report that these two compounds, known as potential drugs like antibiotics through in silico molecular docking, were first produced by Streptomyces species.

oai:ojs.ejournal.undip.ac.id:article/1788 2017-08-19T22:48:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1788 2017-08-19T22:48:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 4 (2010): Ilmu Kelautan; 214-220 Wiyono, Eko Sri; Departemen Pemanfaatan Sumberdaya Perikanan Fakultas Perikanan dan Ilmu Kelautan IPB Jl. Agathis, Kampus IPB Darmaga Bogor, Telp/Fax 0251 8622935/8421732 eko_ipb@yahoo.com/eko-psp@ipb.ac.id 2012-02-11 06:24:20 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1788 id Peningkatan tekanan penangkapan ikan&nbsp; di perairan pantai, diduga telah membahayakan kelestarian sumberdaya ikan. Untuk mengetahui kondisi&nbsp; terkini dari sumberdaya ikan di perairan Laut Jawa,&nbsp; pengkajian tentang sumberdaya ikan dasar telah dilakukan.&nbsp;&nbsp; Penelitian ini bertujuan untuk mengkaji komposisi, diversitas dan produktivitas hasil tangkapan ikan dasar di perairan pantai utara Cirebon, Jawa Barat. Data dikumpulkan dengan menggunakan dogol, alat tangkap tradisional yang biasa dioperasikan untuk menangkap ikan di perairan Laut Jawa.&nbsp; Agar dapat mengetahui perubahan fish assemblages, data tentang ikan (komposisi dan bobot hasil tangkapan) diambil&nbsp; pada bulan yang berbeda (Maret, Juli dan November). Hasil penelitian ini menunjukkan bahwa pepetek (Leiognathus sp) menjadi ikan dasar yang paling dominan di pantai utara Cirebon.&nbsp; Meskipun nilai indek diversitas dan produktivitas berbeda antar musim, tetapi pepetek selalu menempati posisi yang&nbsp; tertinggi dibandingkan jenis ikan lainnya pada semua musim. Hasil penelitian ini mengindikasikan bahwa belum ada perubahan komposisi ikan setelah penghapusan trawl di Laut Jawa.&nbsp; Tekanan penangkapan ikan di lokasi kajian&nbsp; sangat tinggi, terbukti ikan yang mempunyai tingkat rekruitmen&nbsp; tinggi (pepetek) selalu dominan pada semua musim. Kata kunci: Cirebon, diversitas, ikan dasar, komposisi, produktivitas&nbsp;Increased fishing pressure in coastal waters believed to have endangered the sustainability of fish resources. To know the current condition of fish resources in the waters of the Java Sea, the study of the demersal fish condition was conducted.&nbsp;&nbsp; In general, the aim of this study is to analyze present status of demersal fisheries in costal waters of Cirebon, West Java.&nbsp; Specifically, the aims of this study are to analyze composition, diversity and productivity of demersal fish resources at Northern Coastal of Cirebon, West Java.&nbsp;&nbsp; The data were collected using dogol, a traditional little trawl which popular operated for demersal fish in northern Java Sea.&nbsp;&nbsp;&nbsp; In order to understand changing of fish assemblages between season, a set of fish data (composition and weight) was collected in different season (March, July, and November).&nbsp; The results of this study showed that pony fish (Leiognathus sp) was the dominant fish in northern coastal of Cirebon along year study.&nbsp; Althought&nbsp; fish composition, diversity and productivity were different between season,&nbsp; pony fish always give highest contribution comparing to other fish.&nbsp; The results of this study indicate that there has been no change in the fish composition after banned trawl in the Java Sea. Fishing pressure in Cirebon waters is relativelly still high, it indicated by domination of pony fish (Leiognathus sp) which have high level of recruitment in all seasons. Key words:&nbsp; composition, Cirebon, diversity, demersal fish, productivity

oai:ojs.ejournal.undip.ac.id:article/19321 2019-03-26T05:29:35Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19321 2019-03-26T05:29:35Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 1 (2002): Jurnal Ilmu Kelautan; 33-36 Subagiyo, Subagiyo; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro Azizah, Ria; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro 2008-01-08 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19321 en Kualitas tanah dasar tambak merupakan salah satu faktor kunci bagi keberhasilan budidaya udang. Oleh karena itu pengelolaan tanah di dalam usaha pertambakan menjadi bagian yang harus dllakukan. Penelitian dilakukan untuk meningkatkan laju respirasi tanah tambak melalui penerapan konsep priming actlon, yaitu peningkatan laju dekomposisi bahan organik melalui penambahan bahan organik segar. Katul dipilih sebagai priming agent karena akumulasi bahan organik di tanah dasar tambak terutama berasal dari sisa pakan dan kotoran udang yang mengandung kadar nitrogen yang tinggi, maka untuk meningkatkan laju respirasi tanah perlu ditambahkan bahan organik dengan kadar Cyang tinggi. Katul merupakan salah satu limbah pertanian yang mudah didapat dalam jumlah besar dan mempunyai kadar C yang tinggi. Percobaan dilakukan menggunakan bejana respiresi. Ada 4 perlakuan yang dibandingkan yaitu pemberian katul 0,1 kg/m2, kg/m2, 0,3 kg/m2 dan 0,0 kg/m2 (kontrol). Laju respirasi tanah diukur berdasarkan pada jumlah CO2 yang dilepaskan. Hasil penelitian menunjukan bahwa katul dapat dimanfaatkan sebagai priming agent untuk meningkatkan laju respiresi tanah tambak udang. Pada penelitian ini laju respirasi tanah tertinggi sampai terendah berturut­ turut terjadi pada perlakuan katul 0,3 kg/m2, 0,2 kg/m2, 0,1 kg/m2 dan 0,0 kg/m2 (kontrol). Laju respirasi tanah tertinggi selama waktu penelitian terjadi pada hari ke 2 untuk perlakuan pemberian katul 0.3 kg/m2, sedangkan perlakuan pemberian katul 0,1 kg/m2 dan 0,2 kg/m2 terjadi pada hari ke 1Kata kunci: tanah dasar tambak, priming agent, katul, laju respirasi  The accumulation of organic matter in the bottom of pond's prawn shrimp primary come from excess of feed and feces of prawn. The research was done to increase respiration rate of pond bottom soil by using priming action concept. Priming action is enhancing of rate of organic matter decomposition by addition of fresh organic matters. Bran was used as priming agent based on the fact that accumulation of organic matter in pond bottom soil primary come excess of feed and feces of prawn. The organic matter have high of nitrogen, there for the addition of carboneous matter was needed to increase of soil respiration. Bran is agriculture wastes, easy to found and have high of carbon content. Bran applied to sample soil at 0,1 kg/m2, kg/m2, 0,3 kg/m2 and 0,0 kg/m2 (control). Soil were placed in respiration chambers. Soil respiration was measured based on CO2 released in soil respiration. The research showed that bran was able to increase of pond soil respiration. In this research, application of bran to soil at rate of 0,3 kg/m2 caused a higher respiration rate than the other. Maximum rate of respiration at soils which treated with bran at 0,0 kg/m2 and 0.3 kg/m2 were happened on 2nd day, but the other were happened on 1st day.Keywords: pond bottom soil, priming action, bran, and respiration rate

oai:ojs.ejournal.undip.ac.id:article/2339 2012-03-03T05:38:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2339 2012-03-03T05:38:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 4 (2004): Jurnal Ilmu Kelautan; 200-205 Rudiana, Esti; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang, Indonesia Ismunarti, Dwi Haryo; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang, Indonesia Nirwani, Nirwani; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2339 en Keberhasilan penetasan telur penyu hijau secara semi alami sangat rendah akibat faktor fertilitas sebagai sifat bawaan, predator, infeksi mikroba dan kerusakan lingkungan peneluran. Sebagai alternative perlu dipelajari faktor yang mempengaruhi telur selama masa inkubasi di sarang semi alami. Beberapa hasil penelitian menyebutkan bahwa pergerakan perpindahan telur sebagai penyebab rendahnya tingkat keberhasilan penetasan karena selama masa inkubasi telur sangat sensitif terhadap gerakan. Penelitian ini bertujuan untuk mengetahui pengaruh gerakan terhadap tingkatkeberhasilan penetasan telur penyu hijau, Chelonia mydas L. Penelitian dilakukan di Pantai Peneluran Pangumbahan, Sukabumi. Telur diambil dari sarang alami setelahoviposisi oleh induk. Masing-masing sarang semi alami berisi 50 butir telur dengan waktu pemindahan berbeda. Telur penyu hijau sangat sensitif terhadap gerakan mulai 48 jam dan mereda mulai 20 hari setelahoviposisi oleh induk. Pemindahan telur ke sarang semi alami tidak dipengaruhi gerakan (baik dilakukan) sebelum 48 jam dan setelah 20 hari oviposisi oleh induk dengan posisi telur tetap.Kata kunci : penyu hijau, Chelonia mydas L, daya tetas, telurThe natural hatch rate for green turtle to be low, and suggested inherent fertility factors, predators, microbial infection, and nest environtment damage as probable cause of loss. Until artificial incubation of green turtle studying necessary. Although several reports state that moving sea turtle eggs during incubations results in poor survival, the state time of onset of this sensitivity has varied. The research is ti investigation the effect of movement on hatchability of the green turtle, Chelonia mydas L. This research was conducted of the nest environtment Pangumbahan, Sukabumi. Eggs were taken from the nest immediately after cessation of laying. Each fifty eggs was layed in the nest on artificial incubation with the time different of movement. Sensitivity was greatest early in the incubation after 48 h and did not totally abate after 20 day. They should not be moved till at least 48 h until 20 day after oviposition.Key word : green turtle, Chelonia mydas L, hatchability, eggs

oai:ojs.ejournal.undip.ac.id:article/44326 2022-06-18T08:23:33Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/44326 2022-06-18T08:23:33Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 1 (2022): Ilmu Kelautan; 53-60 Tielman, Eduard Meirenno; Master student of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Indriana, Lisa F.; Marine Bio Industry, National Research and Innovation Agency Indonesia Alfred-Wegener-Institute, Helmholtz Center for Polar and Marine Research|Helmholtz Center for Polar and Marine Research|Germany Widowati, Ita; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Center for Coastal Disaster Mitigation and Rehabilitation, Universitas Diponegoro Ambariyanto, Ambariyanto; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Center for Coastal Disaster Mitigation and Rehabilitation, Universitas Diponegoro 2022-03-02 13:33:55 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/44326 FT-IR; Microplastics; P. placenta; Tambak Lorok en Indonesia is the second-largest contributor of plastic debris in the world. The abundance of plastic debris and the bioavailability of its fragmented form known as Microplastics (MPs; &lt; 5 mm of size) can be dangerous for marine environments. This study investigates the presence of MPs in the sea water and marine organisms (Placuna placenta) at Tambak Lorok Waters located at the coast of Semarang city, Central Java, Indonesia. All of the microplastics collected from both samples were identified by their shape, color, size (using Olympus Stereo Microscope), and polymer type (using Fourier Transform Infra-Red Spectroscopy/FTIR). The study found that the Microplastic concentration in the water samples had an average of 12.6 particles.L-1, where the color and size distribution were predominantly blue colored fragments sized less than 50 µm. Examination of the study area showed that microplastics concentration in P. placenta was 1 item and 0.033 items.g-1 for each of the organism. Whereas for physical aspects of microplastics found in the oysters showed the blue colored fibers with range size 300-1000 µm were mostly present. Majority of the polymer types of microplastics found in this study were low-density polyethylene, nylon, polystyrene, and polypropylene. Data from this study shows that microplastics were present in the Tambak Lorok coastal waters. However, there was no significant statistical correlation between the concentration of microplastics in the seawater and the P. placenta, the presence of microplastics in the seawater were found to be ingested by the P. placenta.

oai:ojs.ejournal.undip.ac.id:article/458 2014-12-23T07:52:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/458 2014-12-23T07:52:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 1 (2009): Jurnal Ilmu Kelautan; 42-49 Pringgenies, Delianis 2010-11-03 12:31:57 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/458 id Keberadaan bakteri yang berasosiasi dengan moluska laut telah memungkinkan penggunaan mikro-organisme&nbsp;tersebut sebagai sumber senyawa bioaktif yang baru termasuk senyawa antimikroba khususnya dalam menangani&nbsp;strain strain yang resisten terutama&nbsp;multi-drugsresistant&nbsp;(MDR). Penelitian ini bertujuan untuk mengisolasi&nbsp;bakteri dari gastropoda&nbsp;Conus miles, menskrining bakteri simbionnya yang berpotensi sebagai antibakteri terhadap strain bakteri MDR. Sampling moluska dilakukan di perairan pulau Ternate, Maluku. Selanjutnyadilakukan isolasi bakteri, skrining bakteri penghasil senyawa anti-MDR, uji antibakteri moluska, isolasi bakteri&nbsp;patogen klinik (MDR), uji sensitifitas antibakteri dan analisis sekuen 16S rDNA. Hasilpenelitian memperlihatkan&nbsp;bahwa bakteri simbion Conus miles yang dapat menghambat bakteri MDR berjumlah 16 isolat. Sebanyak 9 isolat memiliki kemampuan menghambat beberapa jenis bakteri MDR, sedangkan sebanyak 7 isolat hanya&nbsp;dapat menghambat satu jenis bakteri MDR. Berdasarkan besarnya zona hambatan yang dibentuk dan&nbsp;kemampuan daya hambatan maka dipilih satu isolat terbaik untuk uji lanjutan, yaitu isolat TCM 6.1. Hasil identitlkasi I6S rDNA menunjukkan bahwa isolat TCM 6.1 memiliki kekerabatan terdekat dengan bakteri&nbsp;Pseudoalteromonas sp. dengan tingkat homologi 99 %. &nbsp; Kata kunci&nbsp;: screening, bakteri simbiotik,&nbsp;Conus miles, antibacterial,&nbsp;multi-drug resistant

oai:ojs.ejournal.undip.ac.id:article/8956 2017-10-27T08:50:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8956 2017-10-27T08:50:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 1 (2015): Ilmu Kelautan; 9-22 Sugianto, Denny Nugroho; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Jl. Prof. H. Soedharto, SH, Tembalang Semarang. 50275 Indonesia Purwanto, Purwanto; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Jl. Prof. H. Soedharto, SH, Tembalang Semarang. 50275 Indonesia Candra, Andika B; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Jl. Prof. H. Soedharto, SH, Tembalang Semarang. 50275 Indonesia 2015-02-27 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8956 en Indonesia merupakan salah satu negara kepulauan terbesar di dunia sehingga peran pelabuhan sangat vital dalam pembangunan ekonomi. Pelabuhan bukan hanya sekedar sebagai pelengkap infrastruktur, melainkan harus direncanakan dan dikelola dengan baik serta memperhatikan fenomena dinamika perairan laut seperti pola gelombang laut. Data gelombang laut menjadi faktor penting dalam perencanaan tata letak dan tipe bangunan pantai karena dipengaruhi oleh tinggi gelombang signifikan, tunggang pasang surut dan transformasi gelombang. Penelitian ini mengalisis karaketristrik dan bentuk transformasi gelombang untuk perencanaan Pelabuhan Hub Internasional, sebagai studi kasus adalah pelabuhan di Kuala Tanjung, Kabupaten Batu Bara. Pelabuhan di Kuala Tanjung merupakan salah satu dari 2 pelabuhan hub internasional yang direncanakan akan dibangun oleh pemerintah Indonesia. Metode yang digunakan adalah metode kuantitatif yang dilakukan dengan perhitungan statistik dan pemodelan matematik dengan modul hydrodinamic dan spectral wave untuk mengetahui arah penjalaran dan transformasi gelombang. Hasil dari data ECMWF selama 1999–Juni 2014, diketahui tinggi gelombang signifikan (Hs) maksimum mencapai 1,69 m dan periode maksimum 8 detik. Karakteristik gelombang termasuk klasifikasi gelombang laut transisi dengan nilai d.L-1 berkisar anrata 0,27–0,48 dan berdasarkan periodenya diklasifikasikan sebagai gelombang gravitasi.Transformasi gelombang terjadi akibat pendangkalan dengan koefesian pendangkalan Ks 0,93–0,98 dan proses refraksi gelombang dengan koefesien Kr 0,97–0,99. Tinggi gelombang pecah Hb sebesar 1,24 meter dengan kedalaman gelombang pecah db sebesar 1,82 meter. Efektifitas desain bangunan terminal di Pelabuhan Kuala Tanjung secara keseluruhan untuk sepanjang musim sebesar 79,8% atau dapat dikatakan cukup efektif dalam meredam gelombang. Kata kunci: transformasi gelombang, tinggi dan periode gelombang, pelabuhan Indonesia is one of the largest archipelagic countries in the world, therefore port has vital role in economic development. Port is not just as a complement to the infrastructure, but it must be planned and managed properly and attention to the dynamics of marine phenomena such as ocean wave patterns. Ocean wave data become important factors in planning coastal building, since it is influenced by wave height, tides and waves transformation. The purpose of this study was to analyse characteristic and forms wave transformations for planning of international hub port at Kuala Tanjung, Baru Bara District North Sumatra. This port is one of two Indonesian government's plan in the development of international hub port. Quantitative method was used in this study by statistical calculations and mathematical modeling with hydrodinamic modules and spectral wave to determine the direction of wave propagation and transformation. Results show that based on ECMWF data during 1999-June 2014, known significant wave height (Hs) maximum of 1.69 m and maximum period (Ts) of 8 secs. The classification wave characteristics iswave transition (d.L-1: 0.27–0.48) and by the period are classified as gravitational waves. Wave transformation occurs due to the soaling, withKs 0.93–0.98 and the wave refraction Kr 0.97–0.99. Whereas Hb of 1.24 meters anddb 1.82 meters. The effectiveness of the design of the terminal building at the Port of Kuala Tanjung overall for the season amounted to 79.8%, which is quite effective in reducing the wave. Keywords: wave transformation, wave height and period, Port of Kuala Tanjung

oai:ojs.ejournal.undip.ac.id:article/66979 2025-06-25T07:35:55Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/66979 2025-06-25T07:35:55Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 2 (2025): Ilmu Kelautan; 174-182 Jihadi, Muhammad Shulhan; Oceanography Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro Zainuri, Muhammad; Oceanography Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro Center for Coastal Rehabilitation and Disaster Mitigation Studies, Universitas Diponegoro Goff, Virginia Andrews-; Department of Climate Change Energy the Environment and Water, Australian Antarctic Division Widiaratih, Rikha; Oceanography Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro Kunarso, Kunarso; Oceanography Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro Indrayanti, Elis; Oceanography Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro 2025-06-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/66979 pygmy blue whale; migration; connectivity; circuit theory; Australia-Indonesia en Blue whale and their subspecies is an endangered whale species that needs to be conserved by protecting their important habitat and migration corridor. Research about designing and modelling blue whale habitat for marine protected area has been done many times. However, incorporation of connectivity in marine protected areas design and management has been limited due to the complexity of methods used to model connectivity, therefore the implementation among practitioners is inconsistent. An alternative method to model connectivity of pygmy blue whale habitat is discussed through a combination of maximum entropy model and circuit theory. The habitat suitability models were made using satellite-tagged pygmy blue whale data (2012-2016) and oceanographic variables, such as sea surface temperature, chlorophyll, salinity, bathymetry, and seafloor geomorphology for four season that is March-April-May (MAM), June-July-August (JJA), September-October-November (SON), and December-January-February (DJF). The habitat suitability model shows different importance of environmental variables in their preference of habitat in each season, with distance from slope as the most influential parameter during the migration season (54.4% for MAM, 37.8% for SON), mean climatological chlorophyll during winter (31%), and mean climatological sea surface temperature during summer (54.7%). Habitat suitability result were then used to model connectivity, assuming that the whales migrate during MAM and SON. The migration model from Omniscape showed some pinch point, such as Sumba-Sape strait, Alor strait, Rote strait, Ombai strait. These pinch points can be seen as corridors with high potential of pygmy blue whale migration or high connectivity, therefore this area could become priority for conservation.

oai:ojs.ejournal.undip.ac.id:article/2217 2012-03-06T11:08:35Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2217 2012-03-06T11:08:35Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 3 (2006): Jurnal Ilmu Kelautan; 133-139 Subardjo, Petrus; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang Rochaddi, Baskoro; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang Purnomo, Sigit; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2217 en Penelitian ini dilaksanakan di wilayah Pulau Karimunjawa dan Kemujan. Tujuan dari penelitian ini adalah untuk melakukan pemetaan sumberdaya laut dan pesisir Pulau Karimunjawa dan Kemujan serta potensinya melalui analisis citra penginderaan jauh dengan menggunakan data citra satelit ASTER. Metode yang digunakandalam penelitian ini adalah diskriptif, sedangkan untuk cek lapangan menggunakan sampling purposif. Hasil menunjukkan bahwa sumberdaya laut di Pulau Karimunjawa terdapat lima kelas yaitu pasir &plusmn; 41,4 ha, padang lamun/rumput laut &plusmn; 84,16 ha, pecahan karang &plusmn; 43,77 ha, karang hidup &plusmn; 379,21 ha dan karang mati &plusmn; 107,9 ha. Sedangkan sumberdaya laut yang ada di Pulau Kemujan yaitu pasir &plusmn; 86,71 ha, padang lamun/rumput laut &plusmn; 163,16 ha, pecahan karang &plusmn; 59,00 ha, karang hidup &plusmn; 483,15 ha dan karang mati &plusmn; 153,46 ha. Sumberdaya pesisir di Pulau Karimunjawa terdapat sembilan kelas, yaitu hutan mangrove &plusmn; 184,89 ha, hutan primer &plusmn; 846,80 ha, hutan skunder &plusmn; 715,01 ha, perkebunan &plusmn; 159,40 ha, pertanian &plusmn; 25,74 ha,semak belukar &plusmn; 187,21 ha, tambak &plusmn; 38,37 ha, pemukiman &plusmn; 56,01 ha dan lahan kosong 41,96 ha. Sedangkan sumberdaya pesisir untuk Pulau Kemujan yaitu hutan mangrove &plusmn; 222,90 ha, hutan skunder &plusmn; 254,76 ha,perkebunan &plusmn; 247,73 ha, pertanian &plusmn; 31,46 ha, semak belukar &plusmn;273,30 ha, tambak &plusmn; 21,95 ha, pemukiman &plusmn; 99,07 ha, lahan kosong &plusmn; 50,47 ha dan bandara udara 16,80 ha. Uji ketelitian klasifikasi sumberdaya lautsebesar 86,04 % dan 85,50 % untuk ketelitian klasifikasi sumberdaya pesisir di Pulau Karimunjawa dan Kemujan.Kata kunci: inventarisasi, sumberdaya laut dan pesisir, citra asterThis study was carried out at Karimunjawa and Kemujan Islands. The objective of this research is to investigate marine and coastal resources of Karimunjawa and Kemujan Islands through analysis of remote sensing images by using ASTER satellite image data. Descriptive method was used in this research, while for the field check use purposive sampling. The result of this study indicate that there were five classes of marine resources at Karimunjawa Island i.e. sand &plusmn; 41,4 ha, seagrass &plusmn; 84,16 ha, coral ruble &plusmn; 43,77 ha, life coral &plusmn; 379,21 ha and dead coral &plusmn; 107,9 ha. While marine resource that exist in Kemujan Island that is sand &plusmn; 86,71 ha, field of seagrass &plusmn; 163,16 ha, piece coral &plusmn; 59,00 ha, life coral + 483,15 ha and dead coral &plusmn; 153,46 ha. There were nine classes of coastal resources at Karimunjawa Island i.e. is mangrove forest + 184,89 ha, primary forest &plusmn; 846,80 ha, secondary forest &plusmn; 715,01 ha, plantation + 159,40 ha, agriculture &plusmn; 25,74 ha, coppice &plusmn; 187,21 ha, dam out &plusmn; 38,37 ha, settlement &plusmn; 56,01 ha and empty farm + 41,96 ha. While coastal resource found at Kemujan Island were mangrove forest &plusmn; 222,90 ha, secondary forest &plusmn; 254,76 ha, plantation &plusmn; 247,73 ha, agriculture &plusmn; 31,46 ha, coppice &plusmn; 273,30 ha, dam out &plusmn; 21,95 ha, settlement &plusmn; 99,07 ha, empty farm + 50,47 ha and airport &plusmn; 16,80 ha. Sensitivity test of marine resource classification equal to 86,046% and 86,956 % for the sensitivity of coastal resource classification in Karimunjawa and Kemujan Island.Key words: inventory, seas and coastal resource, aster image.

oai:ojs.ejournal.undip.ac.id:article/18169 2021-10-13T03:39:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/18169 2021-10-13T03:39:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 4 (2018): Ilmu Kelautan; 179-186 https://ejournal.undip.ac.id/index.php/ijms/article/download/18169/45493 Adibrata, Sudirman; Bangka Belitung University Yulianda, Fredinan; Department of Aquatic Resource Management, Fisheries and Marine Science Faculty, Bogor Agricultural University Boer, Mennofatria; Department of Aquatic Resource Management, Fisheries and Marine Science Faculty, Bogor Agricultural University Nurjaya, I Wayan; Department of Marine Science and Technology, Fisheries and Marine Science, Bogor Agricultural University 2019-01-04 12:20:42 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/18169 bar-cheeked coral trout grouper; chart datum; bathymetry; fishing ground; tides Sudirman Adibrata en Corrected bathimetry data is highly required to improve the quality of sea floor map, for a range of purposes including coastal environmental monitoring and management. This research was aimed to know chart datum values used for correctting bathymetry data at Bar-cheeked coral trout grouper (Plectropomus maculates) fishing ground in Lepar and Pongok Island waters 02o57’00”S and 106o50’00”E and 02o53’00”S and 107o03’00”E, respectively, South Bangka Regency, Indonesia. The study was carried out from November 2016 to October 2017, tidal data used for 15 days from September 16–30, 2017 using simple random sampling technique with the total of 845 points of measurements. To calculate tyde harmonic constituents values this study employed admiralty method resulting 10 major components. Results of this research indicated that harmonic coefficient values of M2, M2, S2, N2, K1, O1, M4, MS4, K2, and P1, were 0.0345 m, 0.0608 m, 0.0276 m, 0.4262 m, 0.2060 m, 0.0119 m, 0.0082 m, 0.0164 m, and 0.1406 m, respectively. Values of mean sea level, chart datum, and F, were 0.9620 m, 0.0500 m, and 0.0664 m, respectively, with diurnal type (F= 6.64). Correcting bathymetry values of surveyed location results a deviation about 1.2 m in depth. The calculated chart datum as well as corrected bathymetry provides information that can be used as vertical refrerence datum for generating sea floor map for determining the fishing ground area of bar-cheeked coral trout grouper. Fishing depth usually ranges between 4.2 and 40.8 m. Average water depth in the fishing ground ranged from 14.7 to 22.5 m.

oai:ojs.ejournal.undip.ac.id:article/2412 2020-04-17T05:55:27Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2412 2020-04-17T05:55:27Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 1 (2012): Ilmu Kelautan; 1-7 Bachtiar, Imam; Jurusan PMIPA, FKIP, Universitas Mataram, Mataram Email bachtiar.coral@gmail.com Abrar, Muhammad; Pusat Penelitian Oseanografi (P2O), Lembaga Ilmu Pengetahuan Indonesia (LIPI), Jakarta Budiyanto, Agus; Pusat Penelitian Oseanografi (P2O), Lembaga Ilmu Pengetahuan Indonesia (LIPI), Jakarta Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2412 en Potensi rekruitmen karang sangat penting di dalam pengelolaan terumbu karang, karena potensi pemulihan terumbu karang tergantung pada rekruitmen karang. Penelitian rekruitmen karang Scleractinia dilakukan di perairan Pulau Lembata, Nusa Tenggara Timur, pada bulan Juli 2011. Penelitian ini bertujuan untuk mengetahui keanekaragaman dan kelimpahan rekruit (anakan) karang. Hasil penelitian menunjukkan bahwa Acroporidae, Pocilloporidae, dan Poritidae merupakan tiga famili karang yang mempunyai kontribusi terbesar pada rekruitmen karang di perairan Lembata. Komposisi genus karang pada stasiun penelitian di Laut Flores (Pulau Lapan, Pulau Watupeni, Pulau Wuku) berbeda dari komposisi genus karang di stasiun perairan selat sekitar Pulau Lembata dan Laut Sawu. Ketiga stasiun penelitian di Laut Flores juga mempunyai kelimpahan rekruit yang lebih tinggi dari lokasi lainnya.&nbsp;&nbsp; Kata kunci: karang, rekruitmen, Lembata, komposisi, kelimpahan Potential recruitment of Scleractinian corals is very important in coral reef management, since coral reef recovery is very dependent on coral recruitment. Study on coral recruitment was conducted in Pulau Lembata waters, Nusa Tenggara Timur, on July 2011. Objectives of the study were to determine taxa (family and genera) diversity and abundance of coral recruits. Results showed that coral families of Acroporidae, Pocilloporidae, and Poritidae had highest contribution to the whole coral recruitment. Study locations in the Flores Sea (Pulau Lapan, Pulau Watupeni, Pulau Wuku) showed genera composition that is different from other study locations. The three islands in the Flores Sea also had significantly higher recruit abundance than those in other locations. Key words: coral, recruitment, Lembata, composition, abundance

oai:ojs.ejournal.undip.ac.id:article/48702 2026-05-21T04:27:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/48702 2026-05-21T04:27:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 4 (2022): Ilmu Kelautan; 307-314 Andriyono, Sapto; Department of Marine, Fisheries and Marine Faculty, Universitas Airlangga Pradana, Novian Aji; Aquaculture Study Program, Faculty of Fisheries and Marine, Universitas Airlangga Sulmartiwi, Laksmi; Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga Hidayani, Andi Aliah; Fisheries Department, Faculty of Marine Science and Fisheries, Hasanuddin University Alam, Md. Jobaidul; Department of Fisheries, Ministry of Fisheries and Livestock, Dhaka, Bangladesh Damora, Adrian; Department of Aquaculture, Faculty of Marine and Fisheries, Universitas Syiah Kuala Habib, Ahasan; Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu 2022-12-06 00:12:13 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/48702 diversity; gene; identification; phylogenetic; snapper en Snapper is a type of demersal marine fish from the Lutjanidae family. The Lutjanidae family spread throughout the world and currently has 123 species in 21 genera, one of which is the Lutjanus genus (Miller and Thomas, 2007). To this day, the records of capture fisheries production data for snapper in Malang are still very limited to certain types. Morphological identification that has been carried out so far is still challenging to obtain accurate results because of the many similarities between the observed species or the loss of characteristics. Therefore, molecular identification is necessary to determine the types of snappers in this area and their conservation status. This study aims to determine the types of snappers using a molecular approach by Cytochrome Oxidase subunit I (COI) gene marker.  Phylogenetic tree reconstruction and genetic distance calculations were performed using Mega X software through the neighbour-joining (NJ) algorithm. The results of the identification snapper based on a molecular approach with DNA barcoding revealed that the four snapper samples were L. gibbus, L. rufolineatus, L. bengalensis, and L. erythropterus. Based on the results of the compilation of the phylogenetic tree, it can be seen that the L. bengalensis sample is closely related to L. rufolineatus while L. gibbus, and L. erythropterus each form a separate clade from the two previous Lutjanus species. Based on their conservation status at the IUCN, the four species of snapper found are in the Least Concern category.

oai:ojs.ejournal.undip.ac.id:article/562 2020-10-25T22:45:16Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/562 2020-10-25T22:45:16Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 4 (2008): Jurnal Ilmu Kelautan; 197-202 Winanto, Tjahjo Soedharma, Dedy Affandi, Ridwan Sanusi, Harpasis S. 2010-11-15 06:05:52 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/562 id Intensitas cahaya berpengaruh terhadap fungsi fisiologis dan struktur larva bivalvla. Penelitiaan ini dilakukan untuk mengetahui pengaruh intensitas cahaya terhadap distribusi, pertumbuhan dan sintasan larva tiram mutiara Pinctada maxima. Rancangan acak lengkap dengan empatperlakuan intensitas cahayayaitu 0 (ditutup rapat), 200, 500, dan 800 lux, masing-masing dengan tiga ulangan diterapkan pada penelitian ini. Hasil penelitian menunjukkan bahwa distribusi larva dipengaruhi oleh intensitas cahaya, sedangkan intensitas cahaya optimum untuk sintasan dan pertumbuhan larva adalah 0-200 lux.Kata kunci&nbsp;: Larva, Pinctada maxima, respon, intensitas cahaya, distribusi, sintasan, pertumbuhan

oai:ojs.ejournal.undip.ac.id:article/11379 2020-04-17T06:02:58Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/11379 2020-04-17T06:02:58Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 2 (2016): Ilmu Kelautan; 58-64 Murti, Damar Bayu; Graduate School of Biology – Satya Wacana Christian University Jl. Diponegoro No. 52-60 Salatiga Indonesia 50711 Susanto, A B; Faculty of Fisheries and Marine Science – Diponegoro University Radjasa, Ocky Karna; Faculty of Fisheries and Marine Science – Diponegoro University Rondonuwu, Ferdy Semuel; Graduate School of Biology – Satya Wacana Christian University Jl. Diponegoro No. 52-60 Salatiga Indonesia 50711 2016-06-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/11379 en The search for carotenoids in nature has been extensively studied because of their applications in foods. One treasure of the biopigment source is symbiotic-microorganisms with marine biota. The advantages of symbiont bacteria are easy to culture and sensitize pigments. The use of symbiont bacteria helps to conserve fish, coral reefs, seagrass, and seaweed. Therefore, the bacteria keeps their existence in their ecosystems. In this study, bacterial symbionts were successfully isolated from brown algae Padina sp. The bacterial symbionts had yellow pigment associated with carotenoids. The pigments were characterized using High Performance Liquid Chromatography (HPLC) with a Photo Diode Array (PDA) detector. The carotenoid pigments in the bacterial symbionts were identified as dinoxanthin, lutein and neoxanthin. Molecular identification by using a 16S rRNA gene sequence method, reveals that the bacterial symbionts were closely related to Bacillus marisflavi with a homology of 99%. Keywords :carotenoid pigments, brown algae, Padina, bacterial symbionts, 16S rRNA

oai:ojs.ejournal.undip.ac.id:article/68381 2026-02-11T19:42:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/68381 2026-02-11T19:42:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 4 (2025): Ilmu Kelautan; 544-556 Yanti, Asri; Department of Fisheries, Faculty of Marine Sciences and Fisheries, Universitas Hasanuddin Sulistiono, Sulistiono; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University Mashar, Ali; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University Nurfajar, Nurfajar; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University Ferse, Sebastian C..A.; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences|IPB University|Indonesia Leibniz Centre for Tropical Marine Research Faculty of Biology and Chemistry, University of Bremen Tuwo, Ambo; Department of Marine Science, Faculty of Marine Science and Fisheries, Universitas Hasanuddin 2025-12-20 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/68381 Parrotfish; spawning pattern; sex ratio; fecundity; Seribu Island; gonadosomatic index en Scarus rivulatus is a protogynous hermaphroditic parrotfish closely associated with coral reefs and plays an important ecological role in maintaining reef health through grazing activities. However, information on its reproductive biology in the Seribu Islands, Jakarta, Indonesia, remains limited, although such knowledge is important for sustainable fisheries management. This study aimed to examine the sex ratio, gonadosomatic index (GSI), fecundity, and spawning pattern of S. rivulatus. A total of 2,425 specimens were collected monthly from January to December 2022. Sex identification was based on body coloration and morphology and confirmed by gonadal examination, with individuals classified as female, initial-phase (IP) male, or terminal-phase (TP) male. Total length and body weight were measured, and gonads were analyzed to determine sex, GSI, fecundity, oocyte diameter distribution, and histological characteristics. The overall sex ratio was 1:0.8 (male:female), with females dominating smaller size classes and males occupying larger ones, indicating a protogynous reproductive strategy. GSI values varied throughout the year, with spawning peaks in February, September, and December. Fecundity ranged from 17,013 to 178,813 oocytes and showed positive correlations with total length and body weight. Oocyte diameter distribution and histological observations indicated asynchronous ovarian development, suggesting partial spawning and gradual oocyte release throughout the year. These results highlight the importance of protecting larger individuals and applying seasonal closures and size-based harvesting regulations to maintain population sustainability. This study provides baseline data that can support future management efforts, and further research should explore sex transition processes and larval recruitment dynamics to strengthen ecosystem-based fisheries approaches.

oai:ojs.ejournal.undip.ac.id:article/2258 2012-02-28T11:41:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2258 2012-02-28T11:41:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 1 (2006): Jurnal Ilmu Kelautan; 54-58 Irwani, Irwani; Jurusan Ilmu Kelautan, Fakultas Perikanan & Ilmu Kelautan Universitas Diponegoro, Semarang, Indonesia Telp. / Fax. 024.7474698 Suryono, Chrisna A; Jurusan Ilmu Kelautan, Fakultas Perikanan & Ilmu Kelautan Universitas Diponegoro, Semarang, Indonesia Telp. / Fax. 024.7474698 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2258 en Segara Anakan merupakan salah satu estuaria terbesar di Pulau Jawa yang terkenal dengan keanekaragaman hayatinya. Diantara biota yang terdapat adalah kerang Totok (Geloina sp) yang berasosiasi dengan hutan mangrove. Kerang ini memiliki nilai ekonomis&nbsp; yang cukup tinggi sehingga banyak dimanfaatkan oleh masyarakat. Namun informasi mengenai sifat-sifat ekologisnya belum banyak diketahui biologisnya. Tujuan dari penelitian ini adalah untuk mengetahui distribusi dan stuktur populasi kerang Geloina sp tersebut. Penelitian dilakukan pada bulan Juli -Oktober 2005 di Segara Anakan Cilacap pada empat stasiun yang berbeda salinitasnya (13, 15, 30 dan 32 ppt). Sifat penelitian adalah studi kasus, metoda pengambilan sampel yang digunakan adalah metoda sampling area. Data yang diambil meliputi kerang dan kondisi perairan. Data yang didapatkan dikelompokan berdasarkan kelas ukuran panjang cangkang selanjutnya dilakukan uji chi kwadrat untuk menentukan pola sebaran. Hasil penelitian menunjukan kerang yang didapat adalah&nbsp;Geloina sp dengan pola sebaran merata pada keempat stasiun penelitian yang berbeda salinitasnya. Adapun kepas ukuran kerang yang didapat dalam keempat stasiun dapat dikelompokan menjadi kelas ukuran &lt;3; 3 &ndash; 3,9; &nbsp; 4 &ndash; 4,9; 5 &ndash; 5,9; 6 &ndash; 6,9; 7 &ndash; 7,9; &gt;8 cm. Populasi kerang terbanyak pada semua stasiun adalah kelas ukuran 6 &ndash; 6,9 cm Kata kunci : Segara Anakan,&nbsp;Geloina sp, salinitas&nbsp; Segara Anakan is the largest estuary in Java Island and it has high biodiversity. One of fauna found which associated with the mangroves is Totok mussel&nbsp;Geloina sp. That mussel has economic value so that faced high exploited along season. Considering that condition a study of distribution and their population structure was very importance. The research was carried out on July &ndash; October 2005 in Segara Anakan Cilacap on different station which had different salinity (13, 15, 30 and 32 ppt). The case study type research and sampling area method was used to collect the data of information of the&nbsp;Geloina sp. The data collected in the field are mussel population and water quality condition where the mussel life. The data of mussel ware grouped in several classes of length and followed by chi quadrant test to define the distribution of Geloina sp. The result of the study showed that the Geloina sp was uniform distributed along the four station which had different salinity and the class of length mussel was found &lt;3; 3 &ndash; 3.9; 4 &ndash; 4.9; 5 &ndash; 5.9; 6 &ndash; 6.9; 7 &ndash; 7.9; &gt;8 cm. The class length of 6 &ndash; 6,9 cm was the highest number of mussel found in Segara Anakan Key words : Segara Anakan,&nbsp;Geloina sp, salinity

oai:ojs.ejournal.undip.ac.id:article/28286 2021-10-13T01:00:33Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/28286 2021-10-13T01:00:33Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 1 (2020): Ilmu Kelautan; 7-14 Yudiati, Ervia; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Rustadi, Rustadi; Department of Fisheries, Universitas Gadjah Mada University Ginzel, Fanny Iriany; Faculty of Fisheries and Marine Science, Artha Wacana Christian University Hidayati, Jelita Rahma; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Rizfa, Mila Safitri; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Azhar, Nuril; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Djarod, Muhammad Salauddin Ramadhan; Laboratory of Tropical Marine Biotechnology, Diponegoro University Heriyati, Eny; Marine Science Program Study, Kutai Timur Agricultural College Alghazeer, Rabia; Department of Chemistry, Faculty of Sciences, University of Tripoli 2020-03-08 09:15:09 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/28286 Alginate; Padina sp.; Zebrafish; Stress Tolerance en Alginate is rich in bioactive compounds and has been known to act as a stimulator on the innate immune system. The objective of this study is to determine polysaccharide and oligosaccharide alginate yield, that percentage inhibition with a different type of extraction, to evaluate growth performance as well as immune response by oxygen stress tolerance. Thermal heating with oven laboratory at 140oC for 4.5 hr was done to breakdown the polysaccharide into oligosaccharide. The extraction was conducted by maceration, filtration, precipitation, and centrifugation. Factorial design with two factors was implemented to 260 Zebrafish and reared in thirteen aquariums (20 fish per aquarium) for 12 days. Zebrafish was fed at different dose (4.0g; 6.0g; 8.0g.kg-1) and different type of extraction [noEDTA/noKCl; KCl; EDTA and (EDTAandKCl)]. The evaluation of radical scavenging activity was done spectrophotometrically at 515 nm. Results showed that the highest alginate yield either polysaccharide or oligosaccharide was gained from KCL treatments, percentage inhibition (82.61%), growth performance as well as tolerance of stress (P&lt;0.05). The best growth performance was reached in oligosaccharide supplementation at 6.0g.kg-1 treatment. It can be concluded that alginate oliogosaccharide produced by thermal heating enhanced the antioxidant activity, boost the fish’s immune system, proofed by better growth performance and more tolerant to the low oxygen stress.

oai:ojs.ejournal.undip.ac.id:article/6779 2019-08-26T01:59:38Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/6779 2019-08-26T01:59:38Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 1 (2013): Ilmu Kelautan; 20-29 Yusuf, Muh; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jl. Prof.Dr. Soedharto, Tembalang, Semarang, Indonesia. 50275. Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/6779 en Taman Nasional Laut Karimunjawa memiliki beragam ekosistem dan sumberdaya yang digunakan untuk berbagai peruntukan. Agar tidak tumpang tindih secara spasial, maka diperlukan penelitian tentang analisis kesesuaian lahan terutama untuk pemanfaatan budidaya laut. Penelitian dilakukan selama 12 bulan untuk menentukan kesesuaian lokasi budidaya laut meliputi: budidaya rumput laut, ikan kerapu, dan teripang. Hasil analisis menunjukkan bahwa hampir semua pulau sesuai untuk budidaya rumput laut, dan budidaya ikan kerapu dalam Karamba Jaring Apung (KJA). Sedangkan budidaya teripang hanya sesuai di Pulau Menjangan Besar dan Pulau Menjangan Kecil, serta sedikit luasan di Pulau Karimunjawa dan Pulau Kumbang. Hasil analisis overlay secara spasial terhadap kesesuaian lokasi untuk ke tiga pemanfaatan budidaya laut tersebut menunjukkan bahwa kategori kelas kesesuaian S1 yang memiliki area terluas adalah lokasi untuk budidaya rumput laut seluas 2.765,19 ha (40,75%), kemudian kelas kesesuaian S2 untuk lokasi budidaya ikan kerapu seluas 2.107,04 ha (31,05%), kelas kesesuaian S2 untuk lokasi budidaya rumput laut mencapai luas 1.068,88 ha (15,75%), dan kelas kesesuaian S1 untuk lokasi budidaya ikan kerapu mencapai 697,87 ha (10,28%). Kelas kesesuaian N atau tidak sesuai untuk pemanfaatan budidaya laut hanya seluas 46,27 ha atau 0,69%. Hasil penelitian ini menunjukkan bahwa prioritas kebijakan pemanfaatan perairan di Kepulauan Karimunjawa sebaiknya diarahkan pada budidaya rumput laut. Kata kunci: kesesuaian lokasi, budidaya laut, Taman Nasional Karimunjawa Karimunjawa Marine National Park has a variety of ecosystems and abundant resources which can be used for many kinds of activities. In order to avoid overlaping spatially, it is necessary to conduct a research focusing on analysis of site suitability, mainly for marine culture utilization. This research was conducted for 12 months and aimed to define site suitability for marine culture utilization including seaweed, grouper fish, and sea cucumber culture. The results showed that nearly all islands are suitable and appropriate for seaweed culture or grouper fish by using cage culture method. On the other hand, for sea cucumbers cultivation is only suitable and appropriate in Menjangan Besar island and Menjangan Kecil island, as well as narrow areas in Karimunjawa and Kumbang islands. The result of spatially overlay analysis on site suitability for those three marine cultures showed that suitability class category S1 having the largest area is the site for seaweed culture which extends to 2.765,19 ha (40,75%). Then, suitability class S2 for grouper fish culture extends to 2.107,04 ha (31,05 %), suitability class S2 for seaweed culture extends to1.068,88 ha (15,75 %), and suitability class S1 for grouper fish culture extends to 697,87 ha (10,28 %). Suitability class N or unsuitable for marine culture utilization extends only 46,27 ha or 0,69 %. The results suggest that the policy for aquaculture development at Karimunjawa water should be prioritised for seaweed culture. Keywords: site suitability, marine culture, Karimunjawa National Park

oai:ojs.ejournal.undip.ac.id:article/52494 2023-12-27T19:14:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/52494 2023-12-27T19:14:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 4 (2023): Ilmu Kelautan; 369-382 Nabil, Nabil; Graduate Program in Marine Science, Faculty of Fisheries and Marine Sciences, IPB University Atmadipoera, Agus Saleh; Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, IPB University Nugroho, Dwiyoga; Oceanographic Research Center, National Research and Innovation Agency Naulita, Yuli; Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, IPB University Koch-Larrouy, Ariane; LEGOS, University of Toulouse 2023-12-12 02:49:33 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/52494 Intraseasonal Variability; Maritime Continent; Argo float; SST; MJO; MLD en The eastward propagation of atmospheric waves along the equatorial band from the central equatorial Indian Ocean to the western Pacific Ocean passing through the Indonesian Maritime Continent (IMC), known as the intraseasonal Madden Julian Oscillation (MJO) event, plays an important role on modulating both atmospheric and upper ocean dynamics along its path. This study aims to investigate the MJO active phase dynamics and its impact on changes in near-surface seawater temperature and mixed layer depth (MLD) anomaly in the Banda Sea Indonesia, using multi-datasets of atmospheric reanalysis, satellites derived sea surface temperature (SST), and Argo float between 2017 - 2018. This study revealed that the MJO waves propagate eastward along the southern equator-line over the IMC and pass through the Banda Sea, associated with significant decreased on Outgoing Longwave Radiation (OLR) and increased in zonal wind speed at 850hPa. The study result shows anomalous increased on surface wind speed and SST cooling during of MJO active phase. The amplitude peaks of filtered ocean-atmosphere variables range between 30 – 60 days. Argo float datasets in the Banda Sea for the first time captured upper ocean responses to the arrival of the MJO active phase, as characterized by a negative temperature anomaly of ~0.3°C in the surface mixed layer, large temperature anomaly of ~0.8°C in the thermocline layer and the deepening of the MLD of ~25 m. Hence, the MJO active phase impacts significantly on surface and vertical temperature cooling and regulate upper ocean mixing intensity in the Banda Sea.

oai:ojs.ejournal.undip.ac.id:article/1423 2017-08-19T22:49:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1423 2017-08-19T22:49:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 2 (2010): Ilmu Kelautan; 91-102 Setyawan, Wahyu Budi; Pusat Penelitian Oseanografi – LIPI, Jl. Pasir Putih I, Ancol Timur, Jakarta Utara11048 Telp. (021)7317830; email wahyubudisetyawan@yahoo.com 2012-02-01 06:18:05 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1423 id Kegiatan penanaman mangrove yang gagal banyak dijumpai di kawasan pesisir utara Pulau Jawa. Untuk memperbaiki keadaan tersebut maka perlu diteliti praktek penanaman yang telah dilakukan sehingga dapat diketahui penyebabnya. Penelitian mengenai aktifitas penanaman mangrove di beberapa lokasi di kawasan pesisir utara Pulau Jawa Bagian Barat (Serang, Indramayu, Cirebon dan Tegal) telah dilakukan. Hasil pengamatan menunjukkan bahwa penanaman mangrove di lokasi penelitian sebagian besar dilakukan di tepi pantai yang bersifat erosional dan di habitat yang tidak sesuai bagi pertumbuhan dan perkembangan mangrove, seperti di rataan erosional, endapan lumpur temporer, endapan pasir atau lahan berpasir, dan areal persawahan, sehingga menyebabkan kegagalan upaya penanaman mangrove yang ditunjukkan dengan kematian benih yang ditanam.Kata Kunci : Penanaman Mangroove, Erosi Pantai, Morfologi Pantai, Proses Pantai, Manajemen Wilayah Pesisir&nbsp;Unsuccess mangrove planting activities were found at many places at Western Part of Northern Java Island coastal zone. In order to uncover the problems, it is needed to study mangrove planting practices. Field examination on mangrove planting practices had been done at north coast of western part of Java. This paper provide finding of field works examination on mangrove planting activities at Serang, Indramayu, Cirebon and Tegal coastal areas, and evaluate the condition of the activities results theoretically. Field exanimation at those coastal areas showed that mangrove was planted at erosional coast and on habitat that unfavorable for mangrove growth and development, such as erosional platform, temporary mud deposits, sand deposits or sandy land, and rise field. Consequence of the condition is that the mangrove planting activities become fail due to the death of mangrove seedling. Key words: mangrove planting, coastline erosion, coastal morphology, coastal processes, coastal zone management.

oai:ojs.ejournal.undip.ac.id:article/2282 2017-08-19T22:46:16Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2282 2017-08-19T22:46:16Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 4 (2011): Ilmu Kelautan; 193-198 Gundo, Cakrawira; Dinas Pertanian Kabupaten Minahasa Utara Provinsi Sulawesi Utara JL. Arnol Mononutu Airmadidi Kabupaten Minahasa Utara HP. 082189767553, E-mail cakrawira.gundo@gmail.com Soemarmo, Soemarmo; Dinas Pertanian Kabupaten Minahasa Utara Provinsi Sulawesi Utara JL. Arnol Mononutu Airmadidi Kabupaten Minahasa Utara Arfiati, Diana; Fakultas Pertanian Universitas Brawijaya Harahap, Nuddin; Fakultas Perikanan Universitas Brawijaya JL. Veteran, Malang 65145 Kaunang, Tinny D; Jurusan Biologi, FMIPA, Universitas Negeri Manado Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2282 en Pulau Nain yang akan dijadikan sebagai sentra pengembangan budidaya rumput laut di Minahasa Utara sangat dipengaruhi oleh parameter oseanografi. Tujuan penelitian ini untuk mengetahui kelayakan perairan Pulau Nain untuk pengembangan budidaya Eucheuma spinosum, dikaji dari parameter oseanografinya. Parameter suhu, salinitas, kecerahan, pH, DO, Nitrat dan Phospat diukur secara langsung di lima stasiun pengamatan, kecepatan arus diambil dari data BMKG. Data selanjutnya dianalisis secara deskriptif. Hasil analisis menunjukkan bahwa perairan Pulau Nain mempunyai kisaran suhu 28-310C, salinitas 35-37ppt, kecepatan arus 12,53-25,34 cm/detik, kecerahan mencapai dasar laut, pH 7,3-7,4, DO 4,5-9,8 ppm, Nitrat 0,004-0,02 ppm, &nbsp;Phospat 0,001-0,0096 ppm dan ADG lebih dari 3%, sehingga&nbsp; layak sebagai sentra pengembangan budidaya E. spinosum. Kata kunci: Parameter oseanografi, E. spinosum, budidaya Nain Island was about to become cultivation development centre of seagrass at Northern Minahasa is highly affected by oceanographic parameters. The objective of this study is to found out the appropriateness of Nain Island water in development of Eucheuma spinosum cultivation area, viewed from its oceanographic parameters. Temperature, salinity, brightness, pH, DO, nitrate and phosphate parameters was measured directly from five observation station, current velocity was taken from BMKG data. Data were analyzed descriptively. Result of the analysis showed that Nain Island water has temperature range from 29-31 oC, salinity of 35-37 ppt, current velocity 10,47&ndash;29,6 cm/seconds, brightness reaching bottom of the sea, pH 7,3&ndash;7,5, DO 4,4&ndash;10 ppm, nitrate 0&ndash;0,02 ppm, phosphate 0&ndash;0,02 ppm and ADG more than 3%.&nbsp; Therefore, Nain Isalnd waters is claimed to be appropriate for cultivation of E. spinosum. Key words: oceanographic parameters, E. Spinosum, aquaculture

oai:ojs.ejournal.undip.ac.id:article/35226 2021-10-13T00:52:47Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/35226 2021-10-13T00:52:47Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 1 (2021): Ilmu Kelautan; 17-26 Kholilah, Nenik; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Afiati, Norma; Aquatic Resources Department, Faculty of Fisheries and Marine Science, Diponegoro University Subagiyo, Subagiyo; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University 2021-03-07 22:16:03 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/35226 Indonesia waters; Octopus; Mt-DNA; COI en As per the FAO data, octopus identification is very limited in the species level at world fishery and also they are cryptic nature. On the other hand, Indonesia is one of the top ten highest octopus exporters. This study therefore aimed to determine the species of octopus based on phylogenetic analysis of mt-DNA COI. Octopuses were collected from nine different locations throughout Indonesia, i.e., Anambas, Bangka-Belitung, Cirebon, Karimunjawa, Tuban, Lombok, Buton, Wakatobi and Jayapura. Samples were mostly in the form of tentacles that were directly collected from fishermen. After being preserved in 96% ethanol, the sample was extracted in 10% chelexÒ, PCR amplification using Folmer’s primer then was further analysed by sequencing in Sanger methods. Of the 24 samples sequenced, the results recognized four species Octopodidae belongs to the three genera, named Amphioctopus aegina, Hapalochlaena fasciata, Octopus laqueus and Octopus cyanea. Mean pair-wise distances of within-species were ranged from 0 to 5.5 % and between-species was ranged from 12.9 to 15.8 %. This study distinctly confirmed the difference between genus Amphioctopus and Hapalochlaena (15.5 %), as also between O. laqueus and O. cyanea (12.9%) which was previously not completely distinguished. Although performing species identification using DNA sequences for shallow-water benthic octopus species is perhaps considered premature, this study indicated the possible application of COI sequences for species identification, thereby providing a preliminary dataset for future DNA barcoding of octopus, in particular for Indonesia waters.

oai:ojs.ejournal.undip.ac.id:article/54106 2023-12-06T06:26:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/54106 2023-12-06T06:26:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 3 (2023): Ilmu Kelautan; 217-224 https://ejournal.undip.ac.id/index.php/ijms/article/download/54106/174300 Al-Fartusi, Adel Jassim; Department of Marine Physics, Marine Science Center, Basrah University Malik, Mutasim Ibrahim; Physics Department, Science College, Wasit University Abduljabbar, Hameed Majeed; Physics Department, Education College, Baghdad University 2023-09-11 00:52:40 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/54106 Iraqi marine water; GIS; Landsat-8; TDS; Spectral indicators en Remote sensing techniques have made it possible to monitor an important parameter of water quality, total dissolved solids (TDS), more appropriately and regularly. The research aims to assess Landsat 8 OLI images' ability to expose TDS on the sea surface in Iraqi marine waters. six band combinations were employed in the correlation analysis between band values and six dissolved solids samples collected during the fieldwork in three sampling stations to determine the amount of total dissolved solids (TDS): st1, st2, and st3 in December 2014 (26,38,36.9) g.L-1 and mid-January 2022 (27.4,37.9,37) g.L-1, respectively. Furthermore, two images of the Landsat-8 OLI satellite were captured concurrently with the gathering of samples for TDS detection at the measuring stations. After atmospheric correction and the add the remote sensing indicators, the reflectance of water was extracted from satellite images and utilized to express the spectral characteristics of various TDS concentrations, since the values were (22.64, 38, 32.46) g.L-1 in 2014, and (27.5, 36.68, 38) g.L-1 in 2022.  Correlation coefficient (R2) values of 0.81, 0.96, and Pearson correlation (r) values of 0.90, 0.97 were found among field measurements and spectral data of TDS indicator 2 (SI-2) derived from green, blue, and red bands of Landsat -8 at 2014, 2022 respectively.

oai:ojs.ejournal.undip.ac.id:article/60587 2024-12-10T15:14:41Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/60587 2024-12-10T15:14:41Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 3 (2024): Ilmu Kelautan; 309-320 Belmokhtar, Rahma; Laboratory of Aquaculture and Bioremediation, University Ahmed Ben Bella Department of Natural and Life Sciences, University Ibn-Khaldoun Belmokhtar, Fayza; Laboratory of Aquaculture and Bioremediation, University Ahmed Ben Bella Department of Medicine, University Abdelhamid Ibn Badis Kerfouf, Ahmed; Laboratory of Eco-Development of Space, University Djillali Liabe Hamed, Mohammed Bey Baba; Laboratory of Aquaculture and Bioremediation, University Ahmed Ben Bella Higher School of Biological Sciences of Oran 2024-09-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/60587 Mytilus galloprovincialis; pollution; oxidative stress; biochemical parameters; Algeria en The present study aimed to assess the oxidative stress potential of Mytilus galloprovincialis across four sites along the Algerian west coast from March 2022 to June 2022. Among these sites, three were previously identified as contaminated, while the Barbadjanie site was considered isolated and distant from pollution sources. We measured glutathione (GSH) and malondialdehyde (MDA) levels, as well as the specific activities of glutathione S-transferase (GST) and catalase (CAT) in the digestive glands of the mussels. Our findings revealed a significant decrease in GSH levels in mussels from the contaminated sites, indicating reduced antioxidant capacity. In contrast, MDA levels, GST, and CAT activities exhibited significant increases (P&lt; 0.05) in the same mussels, suggesting heightened oxidative stress and increased cellular damage. To further evaluate the impact of pollution, we applied the Integrated Biomarker Response (IBR) index to the four biomarkers measured. The IBR analysis showed the lowest score for mussels from Barbadjanie, confirming its relatively low pollution impact, and the highest score for mussels from Beni Saf Port, indicating severe pollution effects. This multi-biomarker approach was effective in demonstrating oxidative stress responses in mussels, highlighting its reliability in assessing the impacts of environmental pollution on aquatic organisms. The study underscores the importance of using comprehensive biomonitoring tools to evaluate ecological health and pollution effects in marine environments.

oai:ojs.ejournal.undip.ac.id:article/1674 2017-08-19T22:48:51Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1674 2017-08-19T22:48:51Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 3 (2010): Ilmu Kelautan; 135-142 Suyarso, Suyarso; Pusat Penelitian Oseanografi-LIPI, Jl. Pasir Putih 1, Ancol Timur, Jakarta 11048 Telp. (021)7317830, email: Suyarso_lipi@yahoo.com 2012-02-08 07:21:19 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1674 id Daratan di sekeliling Laut Cina Selatan merupakan wilayah yang sejak jaman kuarter tidak pernah mengalami gerak-gerak tektonik. Proses-proses geologi yang terjadi adalah transgresi dan regresi yang silih berganti, erosi pantai, akresi pantai, sedimentasi dan pembentukan morfologi pantai. Situs-situs peninggalan proses laut di masa lampau yang banyak dijumpai diantaranya pematang pantai purba serta fosil sisa-sisa kehidupan laut seperti Ostrea sp. dan lain sebagainya. Situs-situs tersebut umumnya terletak pada ketinggian 1,5 m hingga 2,5 m di atas muka laut sekarang. Penelitian yang telah dilakukan pada April 2010 di Pulau Belitung adalah mengukur kedudukan situs-situs fosil Ostrea sp. terhadap muka laut sekarang menggunakan peralatan geodetik dan determinasi umurnya menggunakan radio isotop 14C. Data kedudukan fosil terhadap muka laut sekarang dan data umur fosil tersebut selanjutnya dipergunakan untuk merekonstruksi perubahan muka laut dimasa lampau. Hasil penelitian mengungkapkan bahwa sejak 5000 tahun sebelum sekarang telah terjadi dua kali transgresi. Transgresi pertama terjadi&nbsp; pada sekitar 4460 an tahun sebelum sekarang, muka lautnya berada pada ketinggian 2,50 m diatas muka laut sekarang. Transgresi kedua terjadi pada 2611 an tahun sebelum sekarang, muka lautnya berada pada ketinggian 2,0 m di atas muka laut sekarang. Kata kunci: Ostrea sp., muka laut masa lampau.&nbsp;Lands in the surrounding of the South China Sea are stable areas and have never been displaced due to tectonic movement since the quaternary sub-era. Geological processes are the changes of transgression and regression, coastal erosion, accretion, sedimentation and coastal morphological features building. Monuments of the marine processes in the past are ancient beach ridge, relicts of marine life such as Ostrea sp. fossils, etc. These monuments are located 1.5 m - 2.5 m height above the present sea level. Research was carried out in April 2010 at Belitung Island, the main activities are to measure the position of Ostrea sp. fossils sites relatives to the sea level with using geodetic instrument and dating of the fossils with using 14C radio isotope. Plot of the fossils position relatives to the present sea level versus ages of fossils then be used to reconstruct the change of the sea level in the past. Research result shows since 5000 years before present there were twice transgression. First transgression occurred in 4460&rsquo;s years before present which sea level was 2.50 m height above the present sea level. Second transgression occurred in 2611&rsquo;s years before present and the sea level was 2.0 m height above the present sea level. Key words: Ostrea sp., ancient sea level.

oai:ojs.ejournal.undip.ac.id:article/11685 2021-10-13T03:57:39Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/11685 2021-10-13T03:57:39Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 2 (2018): Ilmu Kelautan; 93-98 Erawan, Muhammad Trial Fiar; Bogor Agricultural University Prartono, Tri; Bogor Agricultural University Arman, Ali; Center for Radiation and Isotope Application, National Nuclear Center of Indonesia 2018-06-21 21:26:42 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/11685 en Karimata strait connects South China Sea and Indonesia territorial seas where the strait current pattern is affected by west and east monsoon. This condition influences particles depositing sedimentation process in the strait. Lack information about sediment depositing rate at the straits dozens years ago makes this research is important to be conducted. This research was to estimate sediment depositing rate in the strait in two areas, near shore and off shore of Borneo. The research was conducted on June to September 2015 used coring sediment samples. Those samples were derived from Baruna Jaya VIII Ship Cruise on June 2015 that was collaborative research between Ministry of Marine and Fisheries Affairs of Indonesia and National Nuclear Center of Indonesia (BATAN).Samples were analyzed in the laboratory of Chemical and Ocean, Department of Environmental and Natural Resources, Center of Radiation and Isotope, National Nuclear Center of Indonesia (BATAN). Estimation of sediment depositing rate used natural isotope 210Pb. The study shows that the depositing rate of the nearest to Borneo area is about 0.92 kg.m-2.y-1 (1965) and increases to be 3.31 kg.m-2.y-1 (2009). The other area is about 0.08 kg.m-2.y-1 (1840) and increases to be 1.78 kg.m-2.y-1 (2010). This result implies that the sediment depositing rate at the nearest area to Borneo is higher than the off shore. Keywords: Near shore, off shore, Natural Isotop 210Pb, CRS (Constant Rate of Supply) model

oai:ojs.ejournal.undip.ac.id:article/2330 2012-03-03T01:51:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2330 2012-03-03T01:51:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 4 (2007): Jurnal Ilmu Kelautan; 205-210 Hartoko, Agus; Fak.Perikanan dan llmu Kelautan,Universitas Diponegoro, Semarang E-mail: agushartoko@yahoo.com Widowati, Lestari Lahksmi; Fak Perikanan, Universitas Sriwijaya, Palembang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2330 en Aplikasi teknologi geomatika untuk analisa dan model spasial serta gabungan data lapangan dan data satelit khususnya untuk analisa kesesuaian lahan dan sumberdaya di wilayah pesisir. Tujuan studi adalah untuk mendapatkan algoritma perhitungan klorofil_a; suhu permukaan laut dan muatan padatan tersuspensi serta analisa kesesuaian lahan tambak berdasarkan data Landsat_ETM dan data lapangan (pH; oksigen terlarut, salinitas, nitrat dan fosfat). Studi ini menggunakan metoda survei dan untuk analisa kesesuaian lahan tambak menggunakan model spasial antara hasil algoritma data satelit Landsat_ETM dan berdasarkan skoring data lapangan. Sampling data lapangan dilakukan pada bulan April 2003. Studi ini mendapatkan bahwa algoritma perhitungan klorofil_a di Kab.Demak 17.912 ((bl-b2)/(b 1 +b2))-0.3343, dengan nilai kisaran antara 0.368 -2.852 &mu;g/l, algoritma perhitungan suhu permukaan laut (&deg;C) adalah 0.6674 (b6) - 75.544, dengan kisaran suhu 25.03- 34.00 (&deg;C); algoritma perhitungan muatan padatan tersuspensi MPT (ppm) adalah 15.8049 + 0.6657(b1) - 1.0665(b2) + 0.9437(b3) + 0.1939(b4), dengan kisaran 26.074 - 74.000 ppm. Kesesuaian lahan tambak di Kab.Demak dldapatkan kategori "Sesuai" di Kec. Sayung dan Karang Tengah dan "Sesuai Bersyarat" di hampir semua Kec. Bonang dan Wedung. Hasil di atas mengindikasikan bahwa lahan tambak di Kab Demak dapat dikembangkan lebih lanjut dengan berbagai usaha. Algoritma yang diperoleh sesuai terutama untuk kondisi musim kemarau, dan untuk kondisi musim hujan diperlukan verifikasi data musim hujan. Kata kuncl: tambak, kesesuaian lahan, geomatika Aims of the research are to obtain estimation formula/algorithms for chlorophyll_a, sea surface temperature, and total suspended solid, and to analyze pond's suitability based on satellite Landsat ETM 7+ (chlorophyll_a, water surface temperature, and total suspended solid) and field data (pH, dissolved oxygen, salinity, nitrate and phosphate). The study use survey methods, and spatial modelling based on algorithms analysis of satellit Landsat ETM_7+ data and scoring method of seatruth data of pond for suitability analysis of pond's water quality. Field sampling had been carried on April, 2003. The research revealed that Algorithm to estimate chlorophyll_a, in pond's of Demak residence is: 17.912 ((bl-b2)/(bl+b2))-0.3343, the tolerance is 0.368 -2.852 &mu;g/l. (lb) Algorithm to estimate water surface temperature in pond's of Demak residence is: 0.6674 (b6) - 75.544, the tolerance is 25.03- 34.00. Algorithm to estimate total suspended solid in pond's of Demak residence is: 15.8049 + 0.6657(b1) - 1.0665(b2) + 0.9437(b3) + 0.1939(b4), the tolerance is 26.074 - 74.000 ppm. Suitability of pond's water quality in Demak revealed the category of "Suitable" at Sayung and Karangtengah Sub district and "Suitable with special effort" at most of Bonang and Wedung Sub district. The above findings Indicates that pond at Demak regency can be developed with special effort. The algorithm generated In this case were suitable especially for dry season conditions, and for rainy season is suggested to use data on rainy season. Key words : brackish water pond, suitability analysis, geomatic

oai:ojs.ejournal.undip.ac.id:article/35354 2022-02-13T04:23:18Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/35354 2022-02-13T04:23:18Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 4 (2021): Ilmu Kelautan; 271-281 Aprilian, Rahma; Marine Science and Technology, IPB University Bengen, Dietriech Geoffrey; Marine Science and Technology, IPB University Erlania, Erlania; School of Life and Environmental Sciences, Center for Integrative Ecology, Deakin University Johan, Ofri; Balai Riset Budidaya Ikan Hias Idris, Idris; Yayasan Terumbu Karang Indonesia 2021-12-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/35354 Coral Reefs; Fish; Health; Resilience; Sangiang Island en The coral reef is massive deposits of calcium carbonate produced from coral animals that are symbiotic with zooxanthellae. One of the activities carried out as an effort to improve the sustainability of coral reefs is monitoring the health condition of coral reefs. The coral reef health index value is based on benthic components and fish components. The benthic component consists of variable life coral cover and the level of coral reef resilience determined based on macroalgae, rubble, and life coral. Fish component is the total biomass of target reef fish. The highest coral reef health index value is at value 10 and the lowest value is at value 1. This study aimed to determine the value of the health index on Sangiang Island. This research was conducted on 16-18 February 2019 on Sangiang Island on three dive stations are Legon Bajo, Legon Waru, and Tembuyung. Data collection of benthic components uses the Underwater Photo Transect (UPT) method and data collection of fish components uses the Underwater Visual Census (UVC) method. The results showed that the coral reef health index on Sangiang Island was at values 6 and 5, means the live coral cover on Sangiang Island was included in the high and medium category, and the level of coral reef resilience or recovery potential was included in the high category, while the total biomass of the target reef fish is still in the low category, only a few species of fish were found that belong to the target reef fish.

oai:ojs.ejournal.undip.ac.id:article/295 2012-02-27T07:24:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/295 2012-02-27T07:24:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 2 (2009): Jurnal Ilmu Kelautan; 102-111 Pribadi, Rudhi; Jurusan Ilmu Kelautan, FPIK-UNDIP, Kampus Tembalang Semarang Telp./Fax 7474698, 08164883017, rudhi_pribadi@yahoo.co.uk Hartati, Retno; Jurusan Ilmu Kelautan, FPIK-UNDIP, Kampus Tembalang Semarang Telp./Fax 7474698, 08164883017 Suryono, Chrisna A.; Jurusan Ilmu Kelautan, FPIK-UNDIP, Kampus Tembalang Semarang Telp./Fax 7474698, 08164883017 2010-10-23 10:21:39 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/295 en Hutan mangrove Segara Anakan Cilacap merupakan kawasan hutan mangrove terluas di Pulau Jawa yang&nbsp;masih tersisa. Ekosistem di lokasi ini mempunyai produktivitas tinggi yang berperan sebagai tempat pemijahan, pembesaran, dan mencari makan bagi berbagai jenis hewan seperti ikan, krustasea, dan moluska. Gastropoda merupakan moluska yang paling banyak hidup pada hutan mangrove. Penelitian ini bertujuan untuk menganalisis&nbsp;komposisi, kelimpahan jenis dan distribusi gastropoda di kawasan hutan mangrove Segara Anakan Cilacap di&nbsp;Klaces dan Sapuregel yang masing-masing mempunyai tingkat sedimentasi yang tinggi dan rendah. Hasil penelitian&nbsp;menunjukkan bahwa di hutan mangrove Segara Anakan Cilacap ditemukan 29 jenis dari 10 famili gastropoda.&nbsp;Sedimentasi yang lebih tinggi di Klaces menyebabkan jumlah jenis dan kelimpahan individu gastropoda lebih banyak (24 jenis, 58,2 ind./m2) daripada Sapuregel (19 jenis dan 15,71 ind./m2&nbsp;) dengan Indeks KesamaanKomunitas 65,12%. Di Klaces, kemelimpahan gastropoda semakin tinggi dengan makinjauhnya lokasi dari pantai karena adanya tekanan Hngkungan yang berupa sampah organik maupun anorganik di sebagian besar pantai,&nbsp;namun di Sapuregel hampirsama. &nbsp; Kata&nbsp;kunci:&nbsp;mangrove, gastropoda, jenis, distribusi &nbsp; Mangrove forest in Segara Anakan Lagoon, Cilacap is unique natural resources and believes as the largest remained&nbsp;mangrove ecosystem in Java. The ecosystem&nbsp;shows very productive and plays important role as spawning, nursing&nbsp;and feeding ground of many economically important species of fishes, crustacean and mollusks. Gastropod is the&nbsp;most common mollusk found in mangrove area. The research aimed to analyzed composition, abundance and distribution of gastropod in Klaces having high sedimentation and sapuragel with low sedimentation in Segara&nbsp;Anakan Lagoon, Cilacap. The results show that at least 29 species of 10 families of gastropod found in the study area. High sedimentation at Klaces result in higher gastropods species and abundance (24 species, 58,2 ind./m2) than at Sapuregel (19 jenis dan 15,71 ind./m2) but the community similarity between the two compared areas was&nbsp;high (65.12%). At Klaces, the more far away from the coastline the more abundance gastropod due to environment&nbsp;pressure. &nbsp; Key words&nbsp;:&nbsp;mangrove, gastropod, species, distribution, diversity

oai:ojs.ejournal.undip.ac.id:article/8569 2020-04-17T06:01:08Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8569 2020-04-17T06:01:08Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 3 (2014): Ilmu Kelautan; 159-164 Kushartono, Edi Wibowo; Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Kampus Tembalang, Semarang 50275 Indonesia Susilo, Endang Sri; Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Kampus Tembalang, Semarang 50275 Indonesia Fatchiyyah, Sayyidah; Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Kampus Tembalang, Semarang 50275 Indonesia 2014-09-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8569 en Salah satu usaha konservasi melindungi Penyu hijau (Chelonia mydas L.) yaitu dengan tindakan relokasi dengan memindahkan telur dari sarang alami ke tempat penetasan semi alami. Waktu pemindahan dan peletakan telur yang tepat sangat diperlukan untuk memperoleh daya tetas maksimal. Tujuan penelitian ini untuk mengetahui pengaruh selang waktu peletakan telur Penyu Hijau terhadap keberhasilan penetasannya. Rancangan penelitian adalah Rancangan Acak Kelompok berdasarkan 3 induk yang berbeda dengan perlakuan selang waktu peletakan yaitu 2, 7 dan 12 jam. Pengukuran dan pengamatan kondisi lingkungan dilakukan selama inkubasi. Pengamatan munculnya tukik mulai dilakukan pada hari ke 50 masa inkubasi.  Pembongkaran sarang dilakukan pada hari ke 60 masa inkubasi kemudian dilakukan pembedahan secara manual untuk mengamati telur yang gagal menetas. Hasil menunjukkan bahwa tidak ada pengaruh nyata secara signifikan adanya perbedaan selang waktu peletakan terhadap keberhasilan penetasan dan keberhasilan kemunculan. Namun selang waktu peletakan dengan nilai yang baik ditunjukkan pada 2 jam, dilanjutkan dengan 12 jam dan 7 jam. Kata kunci: penetasan, penyu hijau (Chelonia mydas L.), semi alami One of the conservation efforts undertaken to protect the green turtle (C. mydas L.) is by relocation of the nest where the eggs are removed from natural to semi-natural hatchery. A right time for the removal and burial of eggs are needed to obtain maximum hatching rate. The purpose of this study is to determine the impact of interval laying period on the hatching success of the green turtle eggs. Randomized block design is used which is based on three different turtles with treatment interval of burying, which is 2, 7, and 12 h. Measurements and observations were made during the environmental conditions of the incubation period. Observations hatchling emergence started on day 50 of incubation. Nest destruction was conducted on the 60th day incubation then eggs that failed to hatch were manually disected. The result showed that there is no significant influence of the time differences on the hatching success and emergence success. However, the best time was foound on 2h time treatment, folowed by 12h and 7h. Keywords: hatching, green turtle (Chelonia mydas L.), semi-natural hatchery

oai:ojs.ejournal.undip.ac.id:article/67424 2025-06-15T08:04:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/67424 2025-06-15T08:04:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 1 (2025): Ilmu Kelautan; 83-91 https://ejournal.undip.ac.id/index.php/ijms/article/download/67424/0 Maharani, Andi Nacisa Malfin Savina; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Papua Sala, Ridwan; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Papua Toha, Abdul Hamid A; Department of Fishery, Faculty of Fisheries and Marine Sciences, Universitas Papua Purbani, Debora Christin; Research Centre for Biosystematics and Evolution, Research Organization for Life Sciences and Environmental, National Research and Innovation Agency Mokodongan, Daniel Frikli; Research Centre for Biosystematics and Evolution, Research Organization for Life Sciences and Environmental, National Research and Innovation Agency Kusuma, Aradea Bujana; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Papua Pranata, Bayu; Department of Fishery, Faculty of Fisheries and Marine Sciences, Universitas Papua 2025-03-08 15:59:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/67424 Papua; Lutjanus; Phylogenetic; CO1; mtDNA en The Lutjanidae family has a wide range of varieties, posing challenges in their morphological identification. Molecular identification is crucial for augmenting the current morphological data as a comprehensive database for documenting the presence of economically significant fish species in Nabire water. This article provides a comprehensive analysis of the morphological and genetic characteristics of red snapper species, as well as assessment of the evolutionary connections among snapper fish found in the water. This study aims to analyze the morphological and genetic characteristics of red snapper species and assess the evolutionary relationships among red snapper found in the sea waters. The DNA extraction procedure was conducted according to the instructions provided by the Geneaid gSYNC DNA extraction kit. The molecular marker used is the DNA barcode of the cytochrome oxidase subunit I (CO1) gene. A total of 29 individuals were identified, representing 8 species, namely Lutjanus timoriensis, Lutjanus gibbus, Lutjanus bohar, Lutjanus papuensis, Pinjalo lewisi, Etelis coruscans, Pristipomoides multidens, and Aphareus rutilans. The molecular analysis indicated that there was a fragment length of 620 base pairs (bp). P. multidens and L.  gibbus had the greatest genetic distance (0.22), whilst the species L. bohar and L. gibbus had the smallest genetic distance (0.11). The phylogenetic tree reconstruction yielded 8 monophyletic clades. Based on morphological and genetic analysis, eight species of the Lutjanidae family were identified in Nabire waters. Research is needed on biological parameters such as size when first caught, optimum length of capture and size when first gonad mature.

oai:ojs.ejournal.undip.ac.id:article/1958 2017-08-19T22:46:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1958 2017-08-19T22:46:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 3 (2011): Ilmu Kelautan; 151-158 Nursyirwani, Nursyirwani; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Riau Kampus Bina Widya Sp.Panam Pekanbaru-Riau-Indonesia. Telp.0761-862620 E-mail: nursyirwani_adnan@yahoo.com Asmara, W.; Program Studi Sain Veteriner Fakultas Kedokteran Hewan, Universitas Gajah Mada, Yogyakarta Wahyuni, A.E.T.H.; Program Studi Sain Veteriner Fakultas Kedokteran Hewan, Universitas Gajah Mada, Triyanto, Triyanto; Jurusan Perikanan Fakultas Pertanian, Universitas Gajah Mada, Yogyakarta 2012-02-17 07:22:03 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1958 id &nbsp; Tujuan penelitian ini adalah untuk menyeleksi isolat bakteri asam laktat (BAL) yang telah diisolasi dari ikan Kerapu Macan (Epinephelus fuscoguttatus) berdasarkan toleransi terhadap pH dan bile salts, patogenisitas dan kemampuannya menekan pertumbuhan Vibrio alginolyticus pada uji ko-kultur. Hasil penelitian menunjukkan bahwa dua puluh isolat BAL yang telah diuji antagonismenya terhadap V. alginolyticus pada penelitian terdahulu, dapat hidup pada pH rendah 3 dan tumbuh pada konsentrasi bile salts 0,5% kecuali isolat KSBU 13D.&nbsp; Semua isolat tidak patogen terhadap ikan Kerapu Macan setelah diinfeksi BAL pada konsentrasi 107 cfu/ml secara intraperitoneal (IP). Pada uji ko-kultur, dari 6 isolat BAL yang dipilih, tiga isolat (KSBU 12C, KSBU 5Da, KSBU 9) berturut-turut mampu menekan pertumbuhan V. alginolyticus, dan penambahan konsentrasi BAL terbaik adalah 107 cfu/ml. Kata kunci: bakteri asam laktat, vibriosis,&nbsp; patogenisitas, ko-kultur, kerapu macan&nbsp;The research objective was to select lactic acid bacteria which previously isolated from Tiger Grouper (Epinephelus fuscoguttatus) based on pH and bile salts tolerances, pathogenicity test and ability to decrease the growth of Vibrio alginolyticus in co-culture test. The result shows that twenty isolates which had also been examined their antagonisms against V. alginolyticus previously, were able to survive relatively low pH&nbsp; values 3 and able to survive at high bile salts concentrations 0.5% except KSBU 13D isolate.&nbsp; All isolates were nonpathogenic to Tiger Grouper after being intraperitoneally infected with the lactic acid bacteria at concentration 107 cfu/ml. In co-culture test, V. alginolyticus was reduced significantly by three isolates (KSBU 12C, KSBU 5Da, KSBU 9) from 6 isolates selected, and the best additional bacterial concentration was&nbsp; 107 cfu/ml. Key words: lactic acid bacteria,&nbsp; vibriosis,&nbsp; pathogenicity,&nbsp; kerapu macan

oai:ojs.ejournal.undip.ac.id:article/15686 2021-10-13T03:56:15Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/15686 2021-10-13T03:56:15Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 3 (2018): Ilmu Kelautan; 123-130 Indriatmoko, Indriatmoko; Research Institute for Fish Enhancement Hedianto, Dimas A.; Research Institute for Fish Enhancement Moria, Sari Budi; Institute for Mariculture Research and Development Tjahjo, Didik WH; Institute for Mariculture Research and Development 2018-09-06 19:01:21 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/15686 Aceh Timur; CIE Lab; PCR-RFLP; Penaeus monodon; RGB en Giant tiger shrimp (Penaeus monodon) has become a prime commodity in Indonesia which was produced by aquaculture and capture fisheries activities. Aceh Province, in this case mostly represented by Aceh Timur District, was well-known as the center of wild-captured-adult giant tiger shrimp. Several previous investigations had proved for its high-quality shrimp spawner in producing good eggs in quality and quantity under artificial spawning condition. Two main interesting points of wild giant tiger shrimp from Aceh Timur came from their coloration and population clusters. This report was aimed to provide that information pre-preliminary and highlighted quantitative information of coloration characteristic through RGB (Red Green Blue) and CIE Lab color space data analysis, as well as, 16S rDNA-PCR-RFLP genetic comparison among four population clusters in Aceh Timur Waters. The color analysis resulted in significant differences between wild-captured and pond-cultured giant tiger shrimp which produced R value 0.1524±0.0091 and 0.1268±0.0004, respectively. Total pixel analysis through L* a* b* color space has distinguished detailed differentiation between wild-captured and pond-cultured giant tiger shrimp acquired images. It is known that most of the wild-captured image pixels were concentrated in quadrant I (+a, +b) while pond-cultured in quadrant II (-a, +b) and III (-a, -b).Genotyping of represented samples from 4 population clusters, i.e. Aceh Tamiang, Langsa, Peudawa, and Julok produce 2 haplotype composite, AAA and AAB. Among 4 clusters, it was found that Julok has become the only cluster which has a different haplotype composite ratio (1:1) (D 0.0348, V 0,9501) from the others (4:1)(V 0.9504).

oai:ojs.ejournal.undip.ac.id:article/2368 2022-04-06T18:18:33Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2368 2022-04-06T18:18:33Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 1 (2004): Jurnal Ilmu Kelautan; 20-25 Djunaidah, I.S.; Balai Besar Pengembangan Budidaya Air Payau, Jepara, Jawa Tengah E-mail : iinsd@telkom.net Toelihere, M.R.; Fakultas Kedokteran Hewan, Institut Pertanian Bogor Effendie, M.I.; Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor Sukimin, S; Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor Riani, E; Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2368 en Percobaan pemeliharaan benih kepiting bakau (Scylla paramamosain) telah dilakukan dengan tujuan untuk mendapatkan metoda pemeliharaan benih kepiting hingga didapatkan benih siap tebar secara masal. Percobaan dilakukan dalam bak serat kaca (fiber glass) berukuran 50 x 40 x 40 cm3 yang dilengkapi dengan aerasi dandiberi substrat dasar dengan ketebalan 3 cm dan digunakan air laut sebagai media pemeliharaan. Pada setiap bak dipelihara 30 ekor benih selama 30 hari. Percobaan dilakukan dalam dua tahap; tahap pertama menguji tiga jenis substrat (pasir, koral dan lumpur) yang ditempatkan di dasar bak dengan ketebalan 3 cm; sedangkan pada tahap kedua ditambahkan pelindung (shelter) berupa potongan pipa PVC yang berdiameter 0,75 inch dengan panjang 10 cm yang ditempatkan pada setiap bak masing-masing sebanyak enam buah. Pakan berupa cacahan udang diberikan satu kali sebanyak 50 % dari total biomasa benih kepiting (crablet). Percobaan dilakukan dengan rancangan acak lengkap dengan tiga perlakuan dan masing-masing dengan tiga ulangan.Tidak ada perbedaan nyata kelangsungah hidup benih pada percobaan pertama. Kelangsungan hidup benih yang dipelihara pada substrat pasir, koral dan lumpur masing-masing adalah 23,3 %, 20,0 % dan 18,4 %.Pertumbuhan benih kepiting dipengaruhi secara nyata oleh perlakuan. Benih kepiting yang dipelihara dalam substrat lumpur secara nyata (P&lt;0,01) memiliki pertumbuhan lebar (27,51mm) dan panjang karapas (19,79 mm) lebih baik dibandingkan dengan benih kepiting yang dipelihara pada substrat pasir (lebar karapas = 21,05, panjang karapas = 15,11 mm) dan substrat koral (lebar karapas = 20,26 mm, lebar karapas = 14,54 mm). Sebaliknya, pertumbuhan karapas tidak dipengaruhi oleh perlakuan pada percobaan kedua. Kelangsungan hidup meningkat dengan penambahan pelindung. Benih kepiting yang dipelihara pada substrat pasir menunjukkan kelangsungan hidup secra nyata lebih tinggi (41,3 %) dibandingakn dengan kelangsungan hidup benih yang dipelihara pada substrat lumpur (29,3 %), tetapi tidak berbeda nyata dengan kelangsungan hidup benih yang dipelihara pada substrat koral (34,7 %).Kata kunci : Kepiting bakau; Scylla spp.; pendederan; substratA 30 day of two nursery experiments was conducted to evaluate the effect of different rearing substrates on the growth and survival of mud crab seed. In the first experiment mud crab seeds were reared in fiber glasstank of 50 x 40 x 40 cm3 at the initial stocking density of 30 crablet/tank. The tanks were filled with filtered seawater to a depth of 30 cm and aerated. Each tank was provided with a 3 cm thick layer of bottomsubstrate. The rearing substrate tested in this experiment were sand, coral and mud. Each treatment was run in three replicates. The second experiment was conducted by providing in each tank six pieces of PVC tube (0.75 inch diameter) of 10 cm long to serve as shelter. Pieces of shrimp were given as feed to mud crab once a day at 50 % of total body weight. No significant differences on survival was observed among treatments in the first experiment. After 30 days the survival of crab reared in sand, coral and mud substrates were 23.3 %, 20.0 % and 18.4 %, respectively. The growth, however, was significantly affected by the treatment. The crab reared in mud substrate had a significantly (P&lt;0.01) better growth of carapace width (27.51 mm) and length (19.79 mm) as compared to the crabs reared in sand substrate (21.05 mm width; 15.11 length) and coral substrate (20.26 mm width; 14.54 length). In contrast, the growth of crab carapace was not significantly affected by the substrate treatment in the second experiment. The crab survival in this experiment was improved by providing shelters. The crabs reared in sand substrate had a significantly higher survival (41.3 %) as compared to the mud substrate treatment (29.3 %), but there was no significant difference with coral substrate treatment (34.7 %).Key words : Mud crab; Scylla spp.; nursery; substrate

oai:ojs.ejournal.undip.ac.id:article/45363 2022-12-05T16:33:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/45363 2022-12-05T16:33:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 3 (2022): Ilmu Kelautan; 240-252 Supiyati, Supiyati; Physics Department, Faculty of Sciences and Mathematics, University of Bengkulu Suwarsono, Suwarsono; Culture and Biology, Institute of Tropical Aquaculture and Fisheries, University Malaysia Terengganu Abdullah, Mhd Ikhwanuddin; Culture and Biology, Institute of Tropical Aquaculture and Fisheries, University Malaysia Terengganu Setiawan, Ichsan; Marine Sciences Department, Faculty of Marine and Fisheries, Universitas Syiah Kuala 2022-09-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/45363 Hydrodynamic; sedimentation; abrasion; model simulation en Bengkulu City which is located on the west coast of Sumatra Island has a very prospective to be developed for marine, fisheries, tourism, and maritime businesses. However, the coast of Bengkulu has recently changed in its morphology as a result of high sedimentation processes. The purpose of this study is to determine the direction and speed of currents, waves, and sediment transport that cause the changes in the coastal morphology of Bengkulu City. In this study, numerical modeling and field measurements of the current velocity and wave height of the ocean were used. The results of the research show verification of wave height and velocity of ocean currents between model simulation and field measurement is a fairly good fit, with a Mean Absolute Percent Error (MAPE) of 1.5% for wave height and 1.9% for the current velocity. The hydrodynamic simulation shows that the direction of the waves and currents dominantly come from the West and move towards the Northeast of the coastal of Bengkulu City with an average wave height of 2.5 m and the highest wave height of 6.5 m, the lowest wave height of 0.5 m, and the highest and the lowest of current speed is 2.5 m.s-1 and is 0.5 m.s-1, respectively. The simulation of sediment transport shows that the overall net volume is sedimented at about 20.25 m3.y-1. The model of coastal morphology changes shows that the sedimentation occurs in the northeast direction of the coastal of Bengkulu City, from Sungai Hitam Beach to Tapak Paderi Beach, and at Pulau Baai Beach.

oai:ojs.ejournal.undip.ac.id:article/553 2020-10-25T22:40:02Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/553 2020-10-25T22:40:02Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 3 (2008): Jurnal Ilmu Kelautan; 133-138 Endrawati, Hadi Ajie Zaenuri, Muhammad Ajie Kusdiyantini, Endang Pancasakti Kusumaningrum, Hermin Pancasakti 2010-11-12 11:31:40 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/553 id Penelitian&nbsp;ini&nbsp;bertujuan untuk mengetahui pertumbuhan juvenil ikan kerapu macan (Epinephelus fuscoguttatus)&nbsp;yang dipelihara dengan padat penebaran yang berbeda. Penelitian ini dilaksanakan dari April hingga Mei&nbsp;2006 di Laboratorium Biologi Oseanografi UNDIP. Percobaan dilakukan di akuarium berukuran 40 x 40&nbsp;x&nbsp;60 cm3, dengan media air laut 10 liter. Perlakuan yang diterapkan adalah ikan&nbsp;kerapu&nbsp;macan (E. fuscoguttatus&nbsp;dengan tingkat kepadatan&nbsp;5, 10&nbsp;dan&nbsp;15 ekor&nbsp;per aquarium.&nbsp;Copepoda&nbsp;diberikan&nbsp;sebagai&nbsp;pakan alami dengankepadatan 50 ind /L air media. Pemeliharaan dilakukan selama&nbsp;4&nbsp;minggu. Hasil penelitian menunjukkan&nbsp;bahwa semakin tinggi padat penebaran, pertambahan bobot&nbsp;dan&nbsp;panjang&nbsp;yangdicapai ikan kerapu macan&nbsp;(Epinephelus fuscoguttatus ) semakin&nbsp;kecil yaitu berturut-turut 3.67&plusmn;&nbsp;0.17; 3.21&nbsp;&plusmn;&nbsp;0.06 dan&nbsp;2.16&nbsp;&plusmn;&nbsp;0.22 gram dan&nbsp;0.63&nbsp;&plusmn;&nbsp;0.1&nbsp;; 0.55&nbsp;&plusmn;&nbsp;0.017 dan 0.5&nbsp;&plusmn;&nbsp;0.05&nbsp;cm masing-masing&nbsp;untuk&nbsp;penebaran&nbsp;5, 10 dan 15&nbsp;ekor&nbsp;per wadah. Hal ini menunjukkan adanya persaingan dan kanibalisme.Kata kunci: larva,&nbsp;kerapu&nbsp;macan, Epinephelus fuscoguttatus,&nbsp;padat&nbsp;penebaran,&nbsp;pertumbuhan

oai:ojs.ejournal.undip.ac.id:article/9356 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9356 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 4 (2015): Ilmu Kelautan; 223-232 Larasati, Chandrika Eka; INSTITUT PERTANIAN BOGOR Kawaroe, Mujizat; Departemen Ilmu dan Teknolologi Kelautan FPIK IPB Prartono, Tri; Departemen Ilmu dan Teknolologi Kelautan FPIK IPB 2015-12-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9356 ind Selat Rupat merupakan selat kecil yang berdekatan dengan Selat Malaka yang memiliki berbagai macam aktivitas antropogenik. Tekanan dari aktivitas tersebut dapat menyebabkan perubahan kondisi lingkungan perairan sehingga dapat berpengaruh pada organisme laut khususnya kelimpahan diatom. Penelitian ini bertujuan untuk menganalisis karakteristik lingkungan perairan yang memengaruhi kelimpahan diatom di permukaan Perairan Selat Rupat. Penelitian ini dilaksanakan di Selat Rupat Riau dengan 5 stasiun yang berbeda karakteristik lingkungannya pada saat pasang dan surut. Parameter yang diukur, yaitu: nitrat, fosfat, silikat, ammonia, intensitas cahaya, salinitas, Pb, minyak dan lemak, serta kelimpahan jenis diatom. Analisis komponen utama (PCA) digunakan untuk menganalisis keterkaitan parameter fisika kimia perairan dengan kelimpahan diatom. Hasil menunjukkan bahwa terdapat 11 jenis diatom yang ditemukan selama penelitian.  Kelimpahan diatom yang memiliki nilai tertinggi saat pasang dan surut adalah Coscinodiscus (10693-197160 sel.m-3 saat pasang dan 8020-186466 sel.m-3 saat surut) dan Skeletonema (40769-106266 selm-3 saat pasang dan 30744-145029 sel.m-3 saat surut). Kandungan NO3 (0.081-0.142 mg.L-1 saat pasang dan 0.090-0.235 mg.L-1 saat surut), SiO2 (0.054-0.075 mg.L-1 saat pasang dan 0.056-0.120 mg.L-1 saat surut), arus (0.3-0.5 m.det-1 saat pasang dan 0.4-0.6 m.det-1 saat surut), dan intensitas cahaya (37-113 lx saat pasang dan 37-233 lx saat surut). Parameter fisika kimia perairan tersebut, memiliki pengaruh yang besar terhadap kelimpahan diatom. Aktivitas antropogenik memengaruhi kelimpahan diatom yang berdampak pada rantai makanan di ekosistem Perairan Selat Rupat sehingga perairan tersebut perlu dikelola dengan baik agar keseimbangan ekosistem perairan tetap terjaga. Kata kunci: antropogenik, diatom, nutrien, pasang surut, Selat Rupat Rupat Strait is one of small strait in Malacca Strait, which has a wide range of anthropogenic activities. The pressure of anthropogenic activities in Rupat Strait Riau could changed the conditions of aquatic environment which was took effects on marine organisms including an abundance of diatoms. This research was aimed to analyze the factors of physic and chemical of waters that affected an abundance of diatom on surface of water in Rupat Strait Riau. This research was conducted in Rupat Strait Riau at 5 stations with different environment characteristics during high and low tide. The measured parameters, consist of nitrate, phosphate, silicate, ammonia, light intensity, salinity, Pb, oils and fats, and then the abundance of diatoms. Principal component analysis (PCA) has used to analyze relations of physic and chemical of waters with abundance of diatoms. The study found 11 genus diatoms which has the highest value at high tide and low tide is Coscinodiscus, which ranged 10.693-197.160 sel.m-3 at high tide and 8.020-186.466 sel.m-3 at low tide, and Skeletonema (40.769-106.266 sel.m-3 at high tide and 30.744-145.029 sel.m-3 at low tide). The contents of NO3 ranged among (0.081–0.142 mg.L-1 at high tide and 0.090-0.235 mgL-1 at low tide), SiO2 ranged (0.054–0.075 mg.L-1 at high tide and from 0.056–0.120 mg.L-1 at low tide, the current ranged (0.3-0.5 m.s-1 at high tide and 0.4-0.6 m.s-1 at low tide), and light intensity ranged (37-113 lx at high tide and 37-233 lx at low tide). Those parameters of physics and chemical had contributions to an abundance of diatoms, but the tidal had no big effects to an abundance of diatoms. The anthropogenic activities had the effects to an abundance of diatoms that have impact on the food chain in aquatic ecosystem at Rupat Strait, so it needs to be managed well for maintain the balancing of aquatic ecosystem.   Keywords: antropogenic, diatom, nutrient, tidal, Selat Rupat

oai:ojs.ejournal.undip.ac.id:article/71505 2025-12-21T07:49:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/71505 2025-12-21T07:49:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 3 (2025): Ilmu Kelautan; 465-474 Bazeer, Asbar Banu; Department of Medical Biotechnology, Faculty of Interdisciplinary Studies, Aarupadai Veedu Medical College & Hospital, Vinayaka Mission’s Research Foundation Sekar, Divya; Department of Medical Biotechnology, Faculty of Interdisciplinary Studies, Aarupadai Veedu Medical College & Hospital, Vinayaka Mission’s Research Foundation Nagarajan, Prithiviraj; Department of Medical Biotechnology, Faculty of Interdisciplinary Studies, Aarupadai Veedu Medical College & Hospital, Vinayaka Mission’s Research Foundation Rangarajalu, Kumar; Department of Biochemistry, Aarupadai Veedu Medical College & Hospital, Vinayaka Mission’s Research Foundation Sivanandham, Mohan; Department of Biochemistry, Aarupadai Veedu Medical College & Hospital, Vinayaka Mission’s Research Foundation 2025-09-10 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/71505 Echinoderm Regeneration; Scarless Healing; Blastema; Tissue Repair en Echinoderms are renowned for their exceptional regenerative abilities, but interspecies comparisons have lacked rigorous quantitative analysis. This study compares arm regeneration in Astropecten indicus and Ophiocnemis marmorata under controlled conditions (37±0.7 ppt salinity, 17±0.3°C). Following 1 cm arm amputations (n=10/species), O. marmorata formed blastemas in 48–72 h, significantly faster than A. indicus (72–120 h, P&lt;0.01). By week 5, 90% of O. marmorata had regrown arms to 2.0±0.2 cm, while only 55% of A. indicus achieved 1.8–2.0±0.3 cm by week 6. O. marmorata developed tube feet by week 2, compared to week 3 in A. indicus, and regained full mobility by week 4, while A. indicus required 5–6 weeks. Scarring was minimal in O. marmorata (&lt;5%), compared to 15% in A. indicus. The survival rate of O. marmorata was higher (80%) compared to A. indicus (60%). These findings reveal distinct regenerative strategies: O. marmorata regenerates rapidly and without scarring, while A. indicus shows slower, fibrotic healing. The superior performance of O. marmorata, including faster blastema formation and complete anatomical restoration, makes it an ideal model for anti-fibrotic research, stem cell studies, and scaffold-free tissue engineering. This study provides the first quantitative framework for comparing echinoderm regeneration, offering promising insights into potential applications for human regenerative medicine.

oai:ojs.ejournal.undip.ac.id:article/2249 2012-02-28T11:41:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2249 2012-02-28T11:41:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 1 (2006): Jurnal Ilmu Kelautan; 1-6 Rachmawati, Diana; Staf Pengajar Program Studi Budidaya Perairan, Jurusan Perikanan, FPIK, Universitas Diponegoro, Semarang, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2249 en Quixalud merupakan feed additive berwarna krem berbentuk bubuk, terdiri dari halquinol 60 % dan kalsium karbonat 40 % Quixalud digunakan sebagai feed additive pakan untuk memperbaiki kandungan nutrisi.&nbsp; Tujuan penelitian adalah untuk mengetahui pengaruh penambahan quixalud&nbsp; dalam pakan buatan; dosis terbaik penambahan quixalud dalam pakan buatan dan dosis optimum penambahan quixalud dalam pakan buatan yang menghasilkan pertumbuhan, rasio konversi pakan dan kelulushidupan terbaik benih ikan kerapu macan. Benih ikan kerapu macan (berat rata-rata 0,36 gram dan panjang rata-rata 1,5 cm) yang berasal dari pemijahan alami BPAP Situbondo digunakan dalam penelitian ini. Pakan uji berbentuk pellet kandungan protein 43,64%, pakan uji dibuat dari pakan komersial bentuk bubuk produksi BBPBAP Jepara ditambah&nbsp; quixalud bentuk bubuk dengan dosis sesuai perlakuan. Metode penelitian menggunakan eksperimental yang dilakukan dilaboratorium dengan Rancangan Acak Lengkap (RAL). Perlakukannya berupa penambahan berbagai dosis quixalud dalam pakan, yaitu : 0 mg/kg; 15 mg/kg; 30 mg/kg dan 45 mg/kg. Hasil penelitian menunjukkan bahwa penambahan quixalud dalam pakan buatan berpengaruh nyata (p&lt;0,05) terhadap laju pertumbuhan spesifik harian. berpengaruh sangat nyata (p&lt;0,01) terhadap rasio konversi pakan dan tidak berpengaruh nyata (p&gt;0,05) terhadap kelulushidupan benih ikan kerapu macan. Penambahan quixalud dalam pakan buatan sebesar 30 mg/kg pakan (perlakuan C) memberikan pertumbuhan, rasio konversi pakan dan kelulushidupan benih ikan kerapu macan terbaik. Dosis optimal penambahan quixalud dalam pakan buatan untuk laju pertumbuhan spesifik harian&nbsp; adalah 20,73 mg/kg pakan dan dosis optimal untuk rasio konversi pakan adalah 20,55 mg/kg pakan. Kualitas air media masih dalam kisaran yang layak bagi pemeliharaan nenih ikan kerapu macan. Kata kunci: Quixalud, pertumbuhan, rasio konversi pakan dan kelulushidupan. Quixalud is additive feed represent in cream color in form of powder, consist of halquinol 60 % and carbonate calcium 40 %. Quixalud used as additive feed to improve nutritional content. Aim of this research are to know effect of quixalud addition in artificial feed; beside to know the best dose of quixalud addition in feed and optimum dose&nbsp; quixalud addition&nbsp; in feed to make the best growth, feed convertion ratio and survival rate of tiger grouper seed. The research used&nbsp; tiger grouper seed (mean of weight is 0,36 gram and mean length is 1,5 cm) as animal test. The seeds coming from natural spawner of BPAP Situbondo. The test feed formed in pellet by raw material from powder artificial feed made by BBPAP Jepara adding by quixalud in powder form too in doses as the treatment used. The protein content of the test feed is 43,64%. The research done by experimental laboratory method used completely random design.&nbsp; The treatment are addition of various quixalud dose in feed, that are : 0 mg/kg; 15 mg/kg; 30 mg/kg and 45 mg/kg. The Result of research indicate that addition of quixalud in feed made a significantly effect (p &lt; 0,05) to daily specific growth rate.&nbsp; Having&nbsp; a very significantly effect (p &lt; 0,01) to FCR and having not an effect (p &gt; 0,05) to survival rate of the tiger grouper seed. Addition of quixalud in feed in equal to 30 mg/kg feed (treatment C) giving the best of growth rate, FCR and&nbsp; and survival rate to the tiger grouper seed.&nbsp; The optimal dose&nbsp; addition of quixalud in feed that made the optimal growth is 20,73 mg/kg feed and optimal dose for the FCR is 20,55 mg/kg feed. The water quality parameters during the rearing period were still suitable range for tiger grouper seed. Key words: Quixalud, growth, feeding conversion ratio (FCR) and survival rate

oai:ojs.ejournal.undip.ac.id:article/26068 2021-10-13T01:05:45Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/26068 2021-10-13T01:05:45Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 4 (2019): Ilmu Kelautan; 159-163 Wibowo, Eko Setio; Faculty of Biology, Jenderal Soedirman University Palupi, Endah Sri; Faculty of Biology, Jenderal Soedirman University Puspitasari, I G A Ayu Ratna; Faculty of Biology, Jenderal Soedirman University Atang, Atang; Faculty of Biology, Jenderal Soedirman University 2019-12-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/26068 worms; feed; oxygen consumption; weight; Nereis sp. en Nereis  sp. contains amino acids and unsaturated fatty acids that can improve the quality of gamete stem cells and the quality of the resulting larvae. Nereis  sp. can increase gamete cell maturation in the parent shrimp up to 70%. This triggers the exploitation these worms excessively in nature since there are no cultivation efforts to meet their needs. This condition encourages research on the biological aspects of Nereis  sp. to complement the information that can support the cultivation of the worms. This research was conducted on Nereis  sp. from the Jeruklegi Cilacap area with different types of feed. This study aims to determine the metabolic rate of the worms Nereis  sp. at different sizes by giving different types of feed. This research use immature Nereis  sp. which was maintained at 15 ppt salinity with three different body weight (0.3-0.6 g; 1.1-1.3 g and 1.8-2.04 g) with three different types of feed (D0 feed, feed flour of Spirulina sp. and ornamental fish feed tetra blitsz). The study was conducted experimentally with a randomized block design (RBD) method with six replications. The results showed the rate of oxygen consumption of Nereis  sp. influenced by the size and type of feed given (P&lt;0.05). Nereis  sp. with size of 0.3-0.6 gr indicates the highest metabolic rate.  Nereis  sp. fed with flour of Spirulina sp. shows the highest metabolic rate.  Appropriate feed to support the growth of Nereis  sp. is D0 and tetra blits (low fiber feed). 

oai:ojs.ejournal.undip.ac.id:article/5135 2017-08-19T22:45:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/5135 2017-08-19T22:45:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 4 (2012): Ilmu Kelautan; 209-216 Kasim, Ma'ruf; Fakultas Perikanan dan Ilmu Kelautan, Universitas Haluoleo Kampus Hijau UNHALU, Jalan Mokodompit. Andounohu Kendari. Telp: 085656555664 Indonesia Asnani, Asnani; Fakultas Perikanan dan Ilmu Kelautan, Universitas Haluoleo Kampus Hijau UNHALU, Jalan Mokodompit. Andounohu Kendari. Telp: 085656555664 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/5135 en Salah satu cara untuk meningkatkan kualitas bibit rumput laut Eucheuma cottonii adalah mengupayakan regenerasi secara generatif. Penelitian ini bertujuan untuk mengetahui musim pelepasan spora rumput laut E. cottonii secara alami dan preferensi perekatan spora pada substrat. Penelitian dilaksanakan di pantai Lakeba, Kota Bau-Bau, Provinsi Sulawesi Tenggara. Metode kurungan rumput laut induk pada dasar perairan digunakan untuk memudahkan pengamatan musim reproduksi. Untuk mengetahui preferensi pelekatan spora digunakan substrat dari berbagai bahan yang digantung disekitar kurungan dasar. Selama penelitian, bentuk morfologi rumput laut terlihat sehat berwarna cokelat tua dan diameter thallus utama berukuran besar. Pada pangkal thallus utama tersebut, terlihat membentuk tonjolan kecil menumpul yang cukup banyak. Tonjolan tersebut diduga sebagai tempat pengeluaran gametosit jantan dan betina. Pada akhir bulan September sampai tengah Oktober terlihat penempelan bibit rumput laut pada substrat karang dan batuan. Bibit yang ditemukan terlihat (kasat mata) setelah berukuran 0,3–0,6 cm dengan bobot 0,018 - 0,038 g. Untuk bobot basah, ukuran 0,4 g pada minggu pertama pemeliharaan dan hanya terjadi perubahan bobot sebesar 2,7 g pada minggu kedelapan pemeliharaan. Penelitian ini memberikan informasi mengenai musim reproduksi generatif pada bulan September-Oktober. Informasi lainnya adalah spora E. cottonii banyak ditemukan melekat pada karang mati bercabang. Sehingga untuk mendapatkan bibit generatif E. cottonii di perairan Sulawesi Tenggara, dapat dilakukan pada bulan tersebut. Bibit yang dikoleksi dialam terbukti mempunyai pertumbuhan yang cukup baik dibandingkan dengan bibit vegetatif yang dipelihara pada areal budidaya masyarakat.Kata kunci: Eucheuma cottonii, bibit, musim perekatan, spora, generatifOne of the few ways to improve the quality of seed types Eucheuma cottonii is to seek methods of regenerating seeds by generative ways. This study aims to determine the release of seaweed spores naturally, and seedling preferences of E. cottonii spores on the substrate. This research was conducted in the area of seaweed cultivation at Lakeba coast line, City of Bau-Bau, Southeast Sulawesi Province. To facilitate observation of the reproductive season, cages method is used for holding seaweed in bottom waters. And to know the preferences of spore attachment were used substrates from various basic materials hanging around the cages. During our research study, the seaweed morphology seens healthy. Seaweed has a dark brown and large diameter of main Thallus. At the base of the main Thallus, small bulge seens enough. The bulge were plenty and rebate expenses allegedly as a male and female gametocytes. At the end of September to middle of October would seens the attachment seaweed seeds on branching coral substrate and rocks. Seeds those found seen (invisible) after sized 0.3 to 0.6 cm with the weight 0.018 to 0.038 g. For wet weight, in the first week upkeep, size reaches 0.4 g and only reaching changes in weight of 2.7 g in the eighth week. This study has provided information on the generative reproduction which occurred on September - October. In addition spore of E. cottonii is commonly found attached to dead coral branches. Thereby, to get the generative seeds of E. cottonii in field especially at Southeast Sulawesi waters, can be carried out in September-October. Seeds which were collected in nature proved to have sufficient good growth compared to vegetative seeds were maintained in the cultivation area.Key words: seaweed, seeds, seedling season, spores, generative

oai:ojs.ejournal.undip.ac.id:article/55150 2024-12-01T17:30:13Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/55150 2024-12-01T17:30:13Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 3 (2023): Ilmu Kelautan; 260-266 Rachmawati, Farida Nur; Faculty of Biology, Jenderal Soedirman University Susilo, Untung; Faculty of Biology, Jenderal Soedirman University Aya, Frolan; Southeast Asian Fisheries Development Center, Aquaculture Department (SEAFDEC/AQD), Binangonan Freshwater Station 2023-09-07 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/55150 Eel; migratory; reproduction; sex ratio en The tropical anguillid eel, Anguilla bicolor McClelland, experiences significant growth up to the adult size in both freshwater and estuarine ecosystems, encountering salinity gradients that may impact their reproduction. Therefore, this study aimed to investigate the reproductive aspects of A. bicolor collected from Serayu River (freshwater) and Segara Anakan (estuary), Cilacap, Central Java, during July 2020 field surveys. The examined parameters included eye index (EI), fin index (FI), gonadosomatic index (GSI), hepatosomatic index (HSI), and sex ratio of eel specimens in freshwater and estuary. Furthermore, the total length (TL) and body weight (BW) ranged from 260 - 630 mm and 18 - 419 g in freshwater, and 260 - 630 mm and 18 - 447 g in estuary. Significant differences (P&lt;0.01) were observed in the reproductive characteristics between the two habitats (P&lt;0.01), with higher eye index, fin index, gonadosomatic index, and hepatosomatic index in freshwater-caught eels than the values obtained in estuary inhabitants. The mean of these four parameters were 6.99 ± 2.98%, 4.08 ± 0.71%, 1.70 ± 1.13%, and 1.92% ± 1.07 in freshwater, while 3.48 ± 1.60%, 3.45 ± 0.479%, 1.12 ± 0.23%, and 0.28 ± 0.19% were found in estuary. The sex ratio was significantly affected by habitat, with female eels dominating in freshwater (62.5%) compared to estuary (32%). These results suggested that eels in freshwater habitats might exhibit early gonadal maturation compared to those in estuary.

oai:ojs.ejournal.undip.ac.id:article/1406 2017-08-19T22:49:45Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1406 2017-08-19T22:49:45Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 1 (2010): Ilmu Kelautan; 23-32 Limantara, Leenawaty; Teknik Industri, Universitas Ma Chung, Villa Puncak Tidar N-01, Malang 65151 *e-mail: leenawaty.limantara@machung.ac.id Heriyanto, Heriyanto; Ma Chung Research Center for Photosynthetic Pigments, Universitas Ma Chung, Jl Villa Puncak Tidar N-01, Malang 65151 **e-mail: heri.yanto@machung.ac.id 2012-01-29 06:07:54 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1406 id Variasi warna tallus pada setiap jenis rumput laut dipengaruhi oleh adanya perbedaan jenis pigmen dan kandungan pigmen dominan yang terdapat didalamnya. Oleh sebab itu, lima jenis rumput laut cokelat telah dianalisa menggunakan Kromatografi Cair Kinerja Tinggi (KCKT) yang dilengkapi dengan detektor photodiode array untuk menentukan komposisi pigmen dan kandungan pigmen dominan fukosantin. Dua puluh enam, 27, 18, 27, dan 19 jenis pigmen telah dipisahkan dari Sargassum duplicatum, S. lipendula, S. polycystum, Padina australis dan Turbinaria conoides secara berturut-turut, dalam satu langkah kerja dengan KCKT fase terbalik menggunakan elusi gradien antara metanol, aseton dan larutan amonium asetat selama 70 menit waktu elusi untuk mendapatkan pemisahan puncak pigmen dengan resolusi yang tinggi. Identikasi pigmen dilakukan berdasarkan urutan kepolaran dan panjang gelombang serapan maksimum setiap pigmen yang dibandingkan dengan literatur yang menggunakan sampel rumput laut cokelat dan fase gerak yang relatif sama. Klorolid a, klorofil c, isomer trans fukosantin, isomer cis fukosantin, &szlig;-kriptoxantin, zeaxantin, violaxantin, fucoxantol, klorofil a, klorofil a&rsquo;, feofitin a, feofitin a&rsquo; dan &szlig;-karoten merupakan pigmen yang ditemukan pada hampir semua rumput laut cokelat. Kandungan fukosantin ditentukan berdasarkan persamaan garis dari kurva standar fukosantin antara luas puncak fukosantin dan konsentrasi fukosantin standar. P. australis memiliki kandungan fukosantin tertinggi jika dibandingkan dengan rumput laut cokelat lainnya yaitu sebesar 0,6368 mg/g berat basah. Hal ini disebabkan karena P. australis tumbuh pada kedalaman yang lebih dalam, sehingga memiliki kemampuan adaptasi khusus berupa thallus yang menyerupai lembaran daun yang digunakan dalam proses pemanenan cahaya secara efisien. Kata kunci: rumput laut cokelat, komposisi pigmen, kandungan fukosantin, KCKT&nbsp;The color of seaweed is influenced by the difference of the type and the content of main pigments inside of seaweed thallus. Therefore, five kinds of brown seaweed have been analyzed by high-performance liquid chromatography (HPLC) which equipped by photodiode array detector to determine the composition of pigment and the content of fucoxanthin. Twenty six, 27, 18, 27, and 19 pigments were separated from Sargassum duplicatum, S. filipendula, S. polycystum, Padina australis and Turbinaria conoides, respectively, in a single-step procedure by reversedphase HPLC with an elution gradient of methanol, acetone and ammonium acetate solution during elution time of 70 minutes. The high resolution peaks of the separated pigments from seaweeds have been obtained by above procedure. The identification of pigments was carried out based on the sequence of pigment polarity and the maximum absorption wavelength of each pigment. These pigment properties were compared by literature that using the brown seaweed as a sample and its mobile phase was relatively similar. Chlorophyllide a, chlorophyll c1, trans-isomer fucoxanthin, cis-isomers fucoxanthin, &beta;-cryptoxanthin, zeaxanthin, violaxanthin, fucoxanthol, chlorophyll a, chlorophyll a&rsquo;, phaeophytin a, phaeophytin a&rsquo; and &beta;-carotene were pigments found in almost of brown seaweeds. The content of fucoxanthin was determined according to a line equation of the fucoxanthin standard curve between the peak area of fucoxanthin and the concentration of fucoxanthin standard. P. australis has a highest of fucoxanthin content than that of the other brown seaweeds, which is 0.6368 mg/g wet weight. This result is caused by the deeper growth place of P. australis. Therefore, P. australis has leaf-like thallus which can be used for efficient light harvesting process. Key words: brown seaweeds, pigment composition, fucoxanthin content, HPLC

oai:ojs.ejournal.undip.ac.id:article/9212 2021-10-13T05:38:04Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9212 2021-10-13T05:38:04Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 2 (2017): Ilmu Kelautan; 59-66 Zainuddin, Mukti; Faculty of Marine Science and Fisheries, Hasanuddin University Safruddin, Safruddin; Faculty of Marine Science and Fisheries, Hasanuddin University Selamat, Muhammad Banda; Faculty of Marine Science and Fisheries, Hasanuddin University Farhum, Aisjah; Faculty of Marine Science and Fisheries, Hasanuddin University Hidayat, Sarip; Indonesian National Institute of Aeronautics and Space (LAPAN) Parepare Jl. Jend. A. Yani KM. 6, Kota Parepare, 91112 Indonesia 2017-06-05 07:07:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9212 Hibah Kompetensi, DIKTI 2015 en One of economically important fish in the Bay of Bone is Skipjack tuna which their distribution and migration are influenced by surrounding environment.  This study aims to investigate the relationship between skipjack tuna and their environments, and to predict potential fishing zones (PFZs) for the fish in the Bone Bay-Flores Sea using satellite-based oceanography and catch data. Generalized additive models (GAMs) were used to assess the relationship. A generalized linear model(GLM) constructed from GAMs was used for prediction. Monthly mean sea surface temperature (SST) and chlorophyll-a during the northwest monsoon (December-January) together with catch data were used for the year 2012-2013. We used the GAMs to assess the effect of the environment variables on skipjack tuna CPUE (catch per unit effort). The best GLM was selected to predict skipjack tuna abundance.  Results indicated that the highest CPUEs (fish/trip) occurred in areas where SST and chlorophyll-a ranged from 29.5°-31.5°C and 0.15 - 0.25 mg m-3, respectively. The PFZs for skipjack were closely related to the spatial distribution of the optimum oceanographic conditions and these mainly developed in three locations, northern area of Bone Bay in December, in the middle area of the bay (4°-5.5°S and 120.5°-121.5°E) during January and moved to the Flores Sea in February. The movement of skipjack concentration was consistent with the fishery data.  This suggests that the dynamics of the optimum oceanographic signatures provided a good indicator for predicting feeding grounds as hotspot areas for skipjack tuna in Bone Bay-Flores Sea during northwest monsoon. Keywords:  skipjack tuna, potential fishing zones, satellite based-oceanographic data, Northwest monsoon

oai:ojs.ejournal.undip.ac.id:article/7087 2017-08-19T22:43:57Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7087 2017-08-19T22:43:57Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 3 (2013): Ilmu Kelautan; 134-142 Patantis, Gintung; Balai Besar Penelitian dan Pengembangan Pengolahan Produk dan Bioteknologi Kelautan dan Perikanan Jl. KS Tubun Petamburan VI, Jakarta, Indonesia. 11420 Januar, Hedi Indra; Balai Besar Penelitian dan Pengembangan Pengolahan Produk dan Bioteknologi Kelautan dan Perikanan Jl. KS Tubun Petamburan VI, Jakarta, Indonesia. 11420 Zilda, Dewi Seswita; Balai Besar Penelitian dan Pengembangan Pengolahan Produk dan Bioteknologi Kelautan dan Perikanan Jl. KS Tubun Petamburan VI, Jakarta, Indonesia. 11420 2013-06-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7087 en Senyawa metabolit pada spons diketahui memiliki keterkaitan dengan mikroba baik yang bersimbion maupun dalam lingkungan sekitarnya. Perubahan lingkungan baik yang disebabkan oleh pengaruh antropogenik maupun perubahan iklim dapat berpengaruh terhadap lingkungan perairan yang secara tidak langsung dapat mempengaruhi struktur komunitas bakteri di lingkungan tersebut. Penelitian ini dilakukan untuk mengetahui peta keanekaragaman bakteri yang berasosiasi dengan Aaptos sp. Sampel yang diuji adalah Aaptos sp. dan air dari wilayah perairan Taman Nasional Kepulauan Seribu (TNKpS). Analisis keragaman bakteri dilakukan menggunakan teknik Terminal Restriction Fragment Length Polymorphism (T-RFLP). Hasil penelitian dari 8 lokasi pengambilan sampel Aaptos sp. memperlihatkan bahwa bakteri di wilayah ini memiliki rentang indek keanekaragaman  Shannon-Weiner (H) sebesar: 0,12–2,56, kekayaan (R): 4-29, dan kerataan (E): 0,09–0,78. Sementara itu, rentang H, R, dan E dari air berturut-turut: 1,28-1,97; 6-17; 0,58-0,90. Analisis lanjutan menunjukan tidak adanya korelasi yang signifikan antara indeks keanekaragaman bakteri Aaptos sp. dan air di perairan TNKpS (R= 0,310 pada P&lt;0,01). Peta keanekaragaman bakteri menunjukan wilayah dengan keanekaragaman tertinggi adalah di perairan utara dan selatan TNKpS. Hal ini selaras dengan kualitas perairan terbaik di wilayah perairan tersebut, oleh karena itu kondisi lingkungan yang baik perlu terus dijaga agar kekayaan alam yang terkandung didalamnya juga tetap terjaga. Kata kunci: peta, keanekaragaman, bakteri, T-RFLP, Taman Nasional Kepulauan Seribu  Sponge metabolites were reported to be related with their associated microbes and the environment where the sponges grow. Environment changes caused by anthropogenic stressor and climate changes can affect the waters, and indirectly can affect bacterial community structure in the environment and in the sponges. The aim of this study was to determine the map of the bacteria diversity associated with Aaptos sp. Samples tested were Aaptos sp. and water from the Seribu Islands National Park (TNKpS). Bacterial diversity analysis was conducted using Terminal Restriction Fragment Length Polymorphism (T-RFLP) technique. The results showed that the diversity of bacteria in Aaptos sp. from the 8 sampling sites had a range of Shannon-Weiner diversity index (H) of 0.12 to 2.56, richness (R) of 4-29, and evenness (E) of 0.09 to 0.78. Meanwhile, the range of H, R, and E of waters were 1.28-1.97; 6-17; 0.58 to 0.90, subsequently. Further analysis showed that no significant correlation between bacterial diversity index of Aaptos sp. and water in the TNKpS waters (R = 0.310 at P&lt;0.01). Diversity map showed that the areas with highest bacterial diversity were in the north and south of TNKpS waters. This was consistent with the best water quality in these areas, therefore environmental conditions is crucial to maintain its natural resources. Keywords: map, diversity, bacteria, T-RFLP, Seribu Islands National Parks

oai:ojs.ejournal.undip.ac.id:article/60149 2024-10-04T07:32:43Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/60149 2024-10-04T07:32:43Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 2 (2024): Ilmu Kelautan; 222-232 Setiawan, Kuncoro Teguh; Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia Research Center for Remote Sensing, National Research and Innovation Agency Rosid, Mohammad Syamsu; Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia Manessa, Masita Dwi Mandini; Department of Geography, Faculty of Mathematics and Natural Sciences, Universitas Indonesia Suardana, A.A. Md. Ananda Putra; Research Center for Oceanography, National Research and Innovation Agency Adi, Novi Susetyo; Data Center, Ministry of Marine Affairs and Fisheries Republic of Indonesia Winarso, Gathot; Research Center for Remote Sensing, National Research and Innovation Agency Osawa, Takahiro; Center for Remote and Application of Satellite Remote Sensing (YUCRAS), Yamaguchi University Asriningrum, Wikanti; Research Center for Remote Sensing, National Research and Innovation Agency Supardjo, Harsono; Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia 2024-06-20 23:50:42 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/60149 Attenuation coefficient; IOP; shallow waters; Kepulauan Seribu; Indonesia en Technology to obtain bathymetric information has become necessary considering the length of the coastline and the many islands owned by Indonesia. Measurement technology using multi-beam and single-beam echo sounders is still an alternative to producing bathymetric information. In shallow water, using echo sounders has constraints and limitations, such as being time-consuming, costly and prone to equipment damage. Remote sensing technology is an alternative to obtaining bathymetric information in shallow waters. Bathymetric modelling with analytical and semi-analytic models from satellites requires attenuation coefficients. Therefore, attenuation coefficient models are essential for satellite data. Attenuation coefficient studies using inherent optical properties (IOP) parameters have not yet been studied to determine Kepulauan Seribu bathymetry, Jakarta, Indonesia. The IOP modelling is determined by absorption and backscatter parameters. Chlorophyll-a Total influences these parameters: Total Suspended Matter (TSM) and Coloured Dissolved Organic Matter (CDOM). This study was performed to determine the attenuation coefficient model using multispectral remote sensing in the Kepulauan Seribu and applied five approaches to determining the attenuation coefficient via IOP: the Gordon, Kirk, Morel, Lee and Simon models. The five models' IOP attenuation coefficient results were compared to the in-situ attenuation coefficient value and evaluated. The results of IOP attenuation coefficient modeling of multispectral remote sensing based on the condition of local water parameters is Kd(λ) = 1.4369 ((a(λ) + b(λ)) / Cos θ) + 0.072. based on the modified Gordon method, The modelling results were obtained with an accuracy of 0.98 determination coefficient (R2) and 0.029 Root Mean Square Error (RMSE).

oai:ojs.ejournal.undip.ac.id:article/1620 2014-12-30T01:00:58Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1620 2014-12-30T01:00:58Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 4 (2009): Jurnal Ilmu Kelautan; 183-188 Tahir, Amiruddin; Fakultas Perikanan dan Ilmu Kelautan-Institut Pertanian Bogor Jl. Rasamala Kampus IPB Darmaga-Bogor Telp/Faks: 0251 8624 360/0811113882 Amiruddin.tahir@yahoo.com Boer, Mennofatria; Fakultas Perikanan dan Ilmu Kelautan-Institut Pertanian Bogor Jl. Rasamala Kampus IPB Darmaga-Bogor Telp/Faks: 0251 8624 360/0811113882 Susilo, Setyo Budi; Fakultas Perikanan dan Ilmu Kelautan-Institut Pertanian Bogor Jl. Rasamala Kampus IPB Darmaga-Bogor Telp/Faks: 0251 8624 360/0811113882 Jaya, Indra; Fakultas Perikanan dan Ilmu Kelautan-Institut Pertanian Bogor Jl. Rasamala Kampus IPB Darmaga-Bogor Telp/Faks: 0251 8624 360/0811113882 2012-02-06 06:50:35 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1620 id Indonesia adalah negara kepulauan yang diperkirakan akan mengalami ancaman dampak pemanasan global dan kenaikan muka laut.&nbsp; Pemanasan global juga akan meningkatkan kerentanan pulau-pulau kecil.&nbsp; Kajian kerentanan pulau-pulau kecil merupakan bagian dari pengelolaan pulau-pulau kecil berkelanjutan.&nbsp; Penelitian ini bertujuan untuk menghitung serta memproyeksikan kerentanan pulau-pulau kecil,&nbsp; dan menyusun strategi adaptasi pulau-pulau kecil.&nbsp; Penelitian dilakukan di Pulau Barrang Lompo-Makasar pada Bulan Nopember 2009. Prinsip dasar analisis data adalah mentransformasikan data lapang (kuantitatif dan kualitatif) ke dalam nilai skor untuk menghitung indeks kerentanan pulau. Indeks kerentanan Pulau Barrang Lompo adalah 8,33 (kategori sedang) dengan perubahan parameter kenaikan muka laut dan perendaman pada 2 tahun ke depan.&nbsp; Elevasi dan kemiringan Pulau Barrang Lompo sangat rendah, dan pada tahun 2100 diperkirakan lebih dari 80 % daratan pulau ini terendam.&nbsp; Strategi adaptasi yang diusulkan adalah pengembangan konservasi laut sekitar 50 % dari habitat pesisir, pembangunan bangunan pelindung pantai dan relokasi pemukiman penduduk. Kata kunci: pulau-pulau kecil, kerentanan, indeks. &nbsp;Indonesia consist of many islands, especially small islands. Small islands are vulnerable to the impact of global warming and sea level rise. Small islands vulnerability assessment is part of the sustainability small island management.&nbsp; The research aims to formulate the small islands vulnerability index, to simulate and to predict the vulnerability dynamic of small islands, to develop adaptation strategies of small islands. The research conducted on Barrang Lompo Island located in Makasar on Nopember 2009.&nbsp; Data collection through observation, measurement, and depth interview.&nbsp; The principle of data analysis is by means of transformation of quantitative and qualitative data into scoring value to produce the small island vulnerability index.&nbsp; The results showed that vulnerability index for Barrang Lompo Island is 8.33 (moderate), coastal inundation until 2100 reach 80 % of the land area.&nbsp; The suggested adaptation strategies are conservation of 50 % of coastal habitat, sea wall construction and resettlement. Key words: Small island, vulnerability, index. &nbsp;

oai:ojs.ejournal.undip.ac.id:article/16971 2021-10-13T03:59:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/16971 2021-10-13T03:59:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 1 (2018): Ilmu Kelautan; 1-18 https://ejournal.undip.ac.id/index.php/ijms/article/download/16971/41537 Wen, Colin K. C.; Department of Life Science, Tunghai University, Chen, Li-Shu; National Museum of Marine Science and Technology Shao, Kwang-Tsao; Biodiversity Research Center, Academia Sinica, Taipei 115, Taiwan 2018-03-03 15:31:32 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/16971 en Spatial and temporal variations in the species composition of assemblages are common in many marine organisms, including fishes. Variations in the fish species composition of subtidal coral reefs have been well documented, however much less is known about such differences for intertidal fish assemblages. This is surprising, given that intertidal fishes are more vulnerable to terrestrial human disturbances. It is critical to evaluate the ecology and biology of intertidal fishes before they are severely impacted by coastal development, especially in developing countries such as those in the tropical western Pacific region where coastal development is rapidly increasing. In this study, we investigated the species composition, abundance, biomass and species number (richness) for intertidal fish assemblages in subtropical (northern) and tropical (southern) Taiwan across four seasons by collecting fishes from tidepools using clove oil. We also examined the gut contents of collected fishes to identify their trophic functional groups in order to investigate regional and seasonal variations for different trophic groups. We found significant differences in the species composition of tidepool fish assemblages between subtropical and tropical Taiwan. Bathygobius fuscus, Abudefduf vaigiensis and Istiblennius dussumieri were dominant species in subtropical Taiwan, whereas Bathygobius coalitus, Abudefduf septemfasciatus and Istiblennius lineatus were dominant in tropical Taiwan. Other species such as Bathygobius cocosensis, Abudefduf sordidus and Istiblennius edentulus were common in both regions. For trophic groups, omnivores and detritivores had or showed trends towards higher species numbers and abundances in the subtropical region, whereas herbivores, planktivores and general carnivores had or showed trends towards higher species numbers and biomass in the tropical region. Overall, many intertidal fish species and trophic groups showed differences in abundance, biomass and species number between subtropical and tropical Taiwan. Further studies on large scale geographical gradients in trophic groups and species compositions in the Indo-west Pacific region are encouraged to assist with ecosystem monitoring and assessment. Keywords: Intertidal fishes, spatio-temporal pattern, feeding guild, diet

oai:ojs.ejournal.undip.ac.id:article/2321 2012-03-02T20:33:46Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2321 2012-03-02T20:33:46Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 3 (2007): Jurnal Ilmu Kelautan; 139-145 Suryoputro, Agus AD; Jurusan Ilmu Kelautan, FPIK Universitas Diponegoro Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2321 en Penelitian ini dilaksanakan di wilayah pesisir Pacitan. Tujuan dari penelitian ini adalah mengetahui kondisis geomorfologi di wilayah pesisir Pacitan Metode penelitian yang digunakan adalah interpretasi foto udara dan pengamatan lapangan. Hasil penelitian yang diperoleh adalah bentuk lahan di wilayah pesisir Telang Ria terdiri dari bentuk lahan asal Marin dan Fluvial Berdasarkan relief, litologi dan proses bentuk lahan Marin dapat digolongkan menjadi satuan bentuk lahan dataran alluvial, dataran banjir dan gosong sungai. Di wilayah pesisir Tamperan terdapat bentuk lahan asal Marin, Denudasional dan Solusional. Berdasarkan relief, litologi dan prosesnya, bentuk lahan asal Marin apat digolongokan menjadisatuan bentuk ;ahan gisik; bentuk lahan asalDenudasional dapat digolongkan menjadi satuan bentuk lahan perbukitan terkikis; bentuk lahan asal Solusional dapat digolongkan menjadi perbukitan karst, wilayah pesisir Srau terdapat bentuk lahan Marin dan Solusional. Berdasarkan relief, litologi, dan proses, bentuk lahan Marin dapat digolongkan menjadi gisik dan benting gisik, bentuk lahan Solusional dapat digolongkan menjadi dataran alluvial karst dan perbukitan karst Kata kunci : bentuk lahan asal, satuan bentuk lahan

oai:ojs.ejournal.undip.ac.id:article/38067 2021-12-05T18:30:07Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/38067 2021-12-05T18:30:07Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 3 (2021): Ilmu Kelautan; 197-206 Ighwerb, Mostafa Imhmed; Faculty of Marine Resources, Asmarya Islamic University Hutabarat, Johannes; Department of Aquaculture, Faculty of Fisheries and Marine Science, Diponegoro University Yudiati, Ervia; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Pribadi, Rudhi; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University 2021-09-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/38067 Dissolved oxygen, Penaeus merguiensis, pH, temperature, salinity en The water quality found on the surface is usually better than that accumulated at the seabed and more bottomless sea. When recycled, water usually brings many materials along the path, all the way to reaching its end. Water quality varies from place to place, season, and different types of rock and soil it passes through also influences the possessed quality. By employing Penaeus merguiensis larvae produced by the Marine Research Center Hatchery owned by Jepara's government, this study analyzes varying effects in three nominal salinities (28, 32, and 36 ppt) and types of diets (Diet A: 100% live feed; Diet B: 100% FRIPPAK; Diet C: a combination of Diet A and Diet C, 50 % each) and finds the optimum water quality parameters such as dissolved oxygen, pH, and temperature on the growth of the newly introduced Penaeus merguiensis larvae. The results show that two nominals of water salinities (28 and 32 ppt) with Diet A works well, supporting the growth from most Zoea to Postlarvae-1: Zoea-1 at 28 ppt with Diet A; Zoea-2 at 32 ppt with Diet A; Zoea-3 at 32 ppt with Diet A; Mysis-1 at 28 ppt with Diet A; Mysis-2 at 28 ppt with Diet C; Mysis-3 at 28 ppt with Diet A; Postlarva-1 at 28 ppt with Diet A. All shrimp prefers temperature ranging from 31-32.4 °C with dissolved oxygen of 4.9-5.74 ppm and pH 7.0-8.1. 

oai:ojs.ejournal.undip.ac.id:article/48994 2023-12-06T06:26:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/48994 2023-12-06T06:26:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 3 (2023): Ilmu Kelautan; 251-259 Nugraha, Aditya Hikmat; Department of Marine Science, Faculty of Marine Science and Fisheries, Raja Ali Haji Maritime University Anggraini, Rika; Department of Marine Science, Faculty of Marine Science and Fisheries, Raja Ali Haji Maritime University Desrica, Ramona; Department of Marine Science, Faculty of Marine Science and Fisheries, Raja Ali Haji Maritime University Hidayati, Jelita Rahma; Department of Marine Science, Faculty of Marine Science and Fisheries, Raja Ali Haji Maritime University Addini, Indri; Carbonethics Indonesia Foundation Halim, Muhamad; Seaweed and Seagrass Research Unit (SSRU), Department Biology, Faculty of Science, Prince of Songkla University 2023-09-18 14:36:37 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/48994 Enhalus acoroides; physiological response; seeds; temperature en Increasing sea surface temperatures as an effect of global warming can affect the survival of marine organism, among these marine organisms is seagrass. Temperature is one factor that can determine seagrass's physiological response in maintaining its life, including in the early stages of life in seagrass seedlings. This research aims to study the effect of temperature on the physiological response of Enhalus acoroides seedlings such as growth rate, leaf tissue anatomy, and chlorophyll content. The method used was an experiment in the laboratory. The seagrass seedlings were grown in an aquarium with three sea water temperature treatments (28°C, 31°C and 35°C) for 8 weeks of maintenance. The choice of sea water temperature treatment of 28°C (A) as a control is the optimal temperature range for seagrass, the treatment temperature of 31°C (B) refers to previous study, i.e. the temperature in the area of origin of the seagrass meadow, and the treatment temperature of 35°C (C) is considered as an estimate of temperature under the scenario of. The growth rate and the average leaf length were more optimal with a high chlorophyll content found at a temperature treatment of 28°C. The highest anatomical size of leaf tissue in the upper and lower epidermis was observed at 31°C, while the most extensive mesophyll tissue was observed at 35°C. In this study, temperature significantly affected the growth rate, average leaf length, anatomical structure of mesophyll tissue, and chlorophyll content of the Enhalus acoroides seedlings.

oai:ojs.ejournal.undip.ac.id:article/67088 2024-12-23T10:10:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/67088 2024-12-23T10:10:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 4 (2024): Ilmu Kelautan; 567-575 Herida, Azalia Puspa; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Kusumaningrum, Hermin Pancasakti; Biotechnology Study Program, Department of Biology. Faculty of Science and Mathematics, Universitas Diponegoro Zainuri, Muhammad; Department of Oceanography, Faculty of Fisheries and Marine Science, Universitas Diponegoro Sabdono, Agus; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Subagiyo, Subagiyo; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Wahyuningsih, Candra; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro 2024-12-11 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/67088 Seaweed; Sulfated Polysaccharide; Karimunjawa; Antiviral; SARS-CoV-2 en SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) is a virus responsible for the infectious disease of COVID-19 (Coronavirus Disease 2019), whose development is still being monitored. One way to deal with the virus’s development is by searching for natural-based medicines that prevent and treat SARS-CoV-2 infection. The abundant biodiversity can be used as a source of treatment. Among many natural resources, seaweed is one of the natural resources rich in bioactive components. Sulfated polysaccharide is one of the potential bioactive compounds in seaweed because it has antiviral effects and the potential to treat SARS-CoV-2. This research aims at increasing the potential of Karimunjawa green seaweed sulfate polysaccharides for antiviral capabilities in SARS-CoV-2 through molecular docking. This research began with identifying the morphology of Karimunjawa seaweed. Identify the components of sulfated polysaccharide compounds based on literature studies according to the species that have been identified. Analysis of the antiviral ability of SARS-CoV-2 based on its binding ability to the SARS-CoV-2 target protein through a molecular docking computational program and testing drug compounds using the Lipinski rule. Based on the research results, it is known that the seaweed obtained from Karimunjawa based on morphology, belongs to the genus Kappaphycus. Molecular docking with a ligand and spike glycoprotein (6LZG) resulted in the hexadecanoic acid compound having a binding free energy of -5.3 kcal.mol-1, which was the compound with the lowest yield compared to other test compounds. The prediction of the physicochemical properties of all test compounds fulfills Lipinski's five rules and has the potential to be used as medicinal compounds.

oai:ojs.ejournal.undip.ac.id:article/1850 2017-08-19T22:47:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1850 2017-08-19T22:47:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 2 (2011): Ilmu Kelautan; 78-85 Rumahlatu, Dominggus; Program Studi Pendidikan Biologi, FKIP Universitas Pattimura, Jl. Dr. Tamaela Ambon. Telp/Fax. 0911-312343. HP.08134300711, e-mail: dominggus_amq@yahoo.co.id 2012-02-12 08:19:58 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1850 id Biomonitoring merupakan suatu pendekatan untuk mengestimasi status pencemaran di laut yang baik. Pada penelitian ini, dilakukan analisa konsentrasi logam berat kadmium (Cd) pada air, sedimen dan bagian tubuh Deadema setosum yang berasal dari perairan pulau Ambon. Sampel yang diperoleh dianalisa konsentrasi Cd dengan menggunakan Atomic Absorbsion Spectrofotometer (AAS). Hasil analisa konsentrasi Cd pada air 0.010.03 ppm dan sedimen 0.17-0.32 ppm, sedangkan pada bagian tubuh Deadema setosum yaitu duri, cangkang, gonad, dan usus berturut-turut 0.30-1.19, 0.31-0.85, 1.30-1.39, dan 1.31-1.95 ppm. Hasil analisis hubungan logam berat Cd pada air dengan kadar logam berat Cd pada bagian tubuh D. setosum menunjukan suatu hubungan yang tidak signifikan. Tapi hubungan yang signifikan ditunjukan pada hasil analisis hubungan antara logam berat Cd pada sedimen dengan kadar logam berat Cd pada bagian tubuh D. setosum. Hasil penelitian ini menunjukan bahwa perairan pulau Ambon telah tercemar logam berat Cd dan D. setosum dapat digunakan sebagai biomonitoring pencemaran logam berat di laut. Kata kunci: Logam Berat Kadmium, Deadema setosum, Biomonitoring&nbsp;Biomonitoring is a good approach to estimate the status of pollution in the marine enviroments. In this research, the analysis of heavy metal concentrations of cadmium (Cd) in water, sediment and body compartments Deadema setosum derived from the island of Ambon were performed. Samples were obtained and then analyzed the concentration of Cd using atomic absorption spectrophotmeter (AAS). Results of analysis of Cd concentration in water are 0:01 to 0:03 ppm and the sediment are 0:17 to 0:32 ppm, whereas the body parts of D. setosum are spines, shells, gonads, and intestines in a row 0:30 to 1:19, 0.31-0.85, 1:30 to 1:39, and 1.31-1.95 ppm. The results of analysis of heavy metals Cd relationship in the water with heavy metals Cd levels in the body of D. setosum showed&nbsp; that the relationship&nbsp; is not significant. But the significant relationship is shown in the results of analysis of the relationship between heavy metal Cd in sediments with heavy metals Cd levels in the body of D. setosum. The results of this study indicate that the waters of the island of Ambon has been polluted by heavy metals Cd and D. setosum can be used as a biomonitoring of heavy metal pollution at the sea. Key words: Heavy Metal Cadmium, Deadema setosum, Biomonitoring

oai:ojs.ejournal.undip.ac.id:article/19361 2019-03-26T05:30:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19361 2019-03-26T05:30:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 3 (2002): Jurnal Ilmu Kelautan; 152-157 Sabdono, Agus; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro 2009-03-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19361 en Plasmid (pPP202) dari Vibrio natriegens diintroduksi secara laboratoris dengan elektrotransformasi pada inang bakteri Escherichia coli dH5α. Pulsed Field Gel Electrophoresis (PFGE) digunakan untuk mengisolasi plasmid DNA. Plasmid pPP202 mengandung gen yang menyandi degradasi parsial senyawa 2,4-diklorofenosi asetat (2,4-D). Bakteri E. coli dH5α tidak memiliki gen yang diperlukan untuk meneralisasi 2,4-D pada khromosomnya. Asumsi tersebut memungkinkan untuk dilakukannya studi transfergen dengan menyeleksi transconjugant pada media indikator EMBA yang mengandung 2,4-D sebagai sumber karbon. Sehingga isolat yang mengandung plasmid pPP202 pada inang E. coli bisa dideteksi dengan melihat kesamaan warna dengan koloni V. natriegens PP202 yang berwarna merah. Selanjutnya, transconjugant tersebut diuji lagi pada media Zobel 12216E + 200 ppm 2,4-D yang dibandingkan dengan koloni negatif yang berwarna putih.Kata kunci : plasmid; transfergen; transconjugant   A plasmid (pPP202) of Vibrio natriegens was introduced on host Escherichia coli dH5α, with electrotransformation Pulsed Field Gel Electrophoresis (PFGE) was used to isolate the DNA plasmid. Genes on this plasmid encode partiaI 2.4-dichlorophenpxyacetic acid (2.4-D) degradation. The E. coli dH5α lacks the chromosomal genes necessary for mineralization of 2.4-D, and this fact allows presumptive transconjugants obtained in gene transfer studies to be selected by plating on EMBA indicator media containing 2.4-D as the carbon source. Use of this approach enabled detection of plasmid pPP202 transfer to E. coli where previously it had not been detected. Thus, all of the 2,4-D-degrading isolates of E. coli that contained a plasmid pPP202 whose red colony colour was similar to the colony colour of V. natriegens Strain PP202, were considered as transconjugants. In addition, transconjugants were observed at distinct times in Zobell 2216E + 200 ppm 2.4-D that supported transconjugant populations compared to controls (white colour) in which no gene transfer was detected.Keywords: plasmid; gene transfer; transconjugant

oai:ojs.ejournal.undip.ac.id:article/2359 2012-03-03T11:58:53Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2359 2012-03-03T11:58:53Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 3 (2004): Jurnal Ilmu Kelautan; 174-179 Nugraha, Wahyu A; Jurusan Ilmu Kelautan, Universitas Trunojoyo, Bangkalan, Madura Munasik, Munasik; Jurusan Ilmu Kelautan, FPIK Universitas Diponegoro, Semarang Wijatmoko, Wisnu; Jurusan Ilmu Kelautan, FPIK Universitas Diponegoro, Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2359 en Fungia fungites merupakan hewan karang soliter, hidup melekat maupun bebas dan bisa bergerak untuk berpindah tempat. F. fungites umum dijumpai di daerah tropik Indo-Pasifik. Penelitian ini dilaksanakan diPulau Burung, P. Cemara Kecil, dan P. Menjangan Kecil, Karimunjawa, Jepara. Pengambilan data di lapangan dengan menggunakan metode transek sabuk. Penelitian ini bertujuan untuk mengetahui distribusi dan struktur populasi karang F. fungites. Dari 6 titik pengamatan, 4 titik diantaranya mempunyai sebaran sampai kedalaman sekitar 12 m yaitu di Pulau Cemara Kecil sisi barat dan sisi timur, P. Burung sisi timur, dan P. Menjangan Kecil sisi timur; dan hanya 2 titik yang mempunyai sebaran sampai kedalaman 21 m yaitu P. Burung sisi barat, dan P. Menjangan Kecil sisi barat. Ukuran F. fungites yang ditemukan di Pulau Burung yang terkecil berdiameter 5 cm dan terbesar berdiameter 41 cm, di P. Cemara Kecil yang terkecil berdiameter 5 cm dan terbesar berdiameter 24 cm, sedangkan di P. Menjangan Kecil yang terkecil berdiameter 5 cm dan terbesar berdiameter 30 cm. Sedangkan kepadatan tertinggi ditemukan pada kedalaman 7-12 m. Tidak terdapat hubungan yang jelas antara kedalaman dengan distribusi F. fungites. Terdapat hubungan positif antara kedalaman dan ukuran rata-rata karang F. fungites.Kata kunci : Distribusi, Struktur Populasi, Soliter, Koloni, Fungia fingitesFungia fungites is an known as solitary coral, attachment and also free living and can make a move to migrate. F. fungites is very common in tropical Indo-Pasific area. This research was conducted at Burung Island, Cemara Kecil Island, and Menjangan Kecil Island, Karimunjawa, Jepara. Data were collected by using belt transect method. The aim of this research is to know the distribution and population structure of solitary coral F. fungites in Karimunjawa Island. From the six point observation, four points among them have the distribution until the depth of about 12 metres those are at the east side of Burung Island, the west and east side of Cemara Kecil Island, and the east of Menjangan Kecil Island. Only two point having distribution until the depth of 21 metres those are the west side of Burung Island, and the west side of Menjangan Kecil island.The smallest diameter of F. fungites was found in Burung Island is 5 cm and the highest diameter is 41 cm, in Cemara Kecil Island the smallest diameter is 5 cm and the biggest diameter is 24 cm, while in MenjanganKecil Island the smallest diameter is 5 cm and the biggest diameter is 30 cm. While the highest density is found in the depth of 7-12 metres. No clearly relationship beetween depth and distribution of F.fungites.There is positive relationship beetween depth and average size of F. Fungites.Key words : Distribution, Population structure, Solitary, Colony, Fungia fungites

oai:ojs.ejournal.undip.ac.id:article/42562 2022-09-06T08:34:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/42562 2022-09-06T08:34:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 2 (2022): Ilmu Kelautan; 151-158 Hudatwi, Mu'alimah; Department of Marine Science, Universitas Bangka Belitung Wijayanti, Diah permata; Department Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Ambariyanto, Ambariyanto; Department Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Hidaka, Michio; Faculty of Science, University of the Ryukyus 2022-06-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/42562 Fitness; Cassiopea; Symbiont; Symbiosis en The specificity of the relationship between cnidarian hosts and symbiotic dinoflagellates (zooxanthellae) differs among host species. Some cnidarian hosts can establish symbiotic relationship with various types of zooxanthellae, while others exhibit high fidelity to specific symbiont type. It is not known how compatibility or specificity of the relationship is determined. We hypothesized that some cnidarian hosts select symbiont type that leads to highest fitness when the host is flexible with symbiont type and more than one types of symbionts are available. As a first step to study this possibility, compatibility of clonal polyps of Cassiopea sp. with six strains of cultured zooxanthellae and the fitness of the host associated with different types of symbionts were studied. Polyp diameter was measured and the number of asexual buds were calculated as a measure of host fitness. The number of zooxanthellae in host and in asexual buds was also measured as a measure of symbiont fitness. Three strains KB8 (clade A), Y106 (clade A), and K100 (clade B) were compatible with the Cassiopea polyps, while other three strains, Y103 (clade C), K111 (clade D), and K102 (clade F) were incompatible. No clear difference in the fitness was found among the polyps inoculated with compatible and incompatible symbiont strains. In one experiment, a compatible strain Y106 seemed to decrease host fitness, but this should be checked by further studies. This study suggests that feeding regimes and long observation period might be important when fitness of hosts associated with different types of symbionts is investigated.

oai:ojs.ejournal.undip.ac.id:article/544 2020-10-25T22:26:47Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/544 2020-10-25T22:26:47Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 2 (2008): Jurnal Ilmu Kelautan; 67-72 Trisyani, Ninis Irawan, Bambang 2010-11-12 10:57:23 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/544 id Lorjuk (Solen vaginalis) adalah salah satujenis kekerangan (Pelecypoda) yang mempunyai nilai ekonomis tinggi.&nbsp;Biota tersebut dapat ditemukan berlimpah di Pantai timur Surabaya. Tujuan penelitian ini untuk mengetahui&nbsp;kelimpahan lorjuk dan kondisi ekologinya. Sampel diambil dari lima stasiun yang mewakjli habitat yang dihuni&nbsp;dan tidak dihuni lorjuk daribulan April-Desember 2007. Hasil penelitian menunjukkan bahwa lorjuk tidak ditemukan&nbsp;pada lokasi dengan substratyang kandungan lumpumya tinggi, dan lebih menyukai substrat dengan kandungan&nbsp;substratpasiryang tinggi. Kelimpahan lorjuk tertinggi ditemukan pada bulan Juni hingga September. Panjang&nbsp;cangkang lorjuk berkisar 1.8-6.9 cm dengan berat 0.16-9.6gr.Analisa hubungan panjang dan bobot lorjuk&nbsp;menunjukan nilai korelasi rata-rata 0.905, yang berarti pertumbuhan panjang seiring dengan pertambahan berat.&nbsp;Sebaran cangkangdidominasi ukuran 3-5cm denganprosentase 65%Kata&nbsp;kunci:&nbsp;Lorjuk, Solen vaginalis, kelimpahan, Surabaya

oai:ojs.ejournal.undip.ac.id:article/9710 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9710 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 3 (2015): Ilmu Kelautan; 163-169 Setyati, Wilis Ari; Program Studi Ilmu Kelautan Universitas Diponegoro, Mahasiswa Program Pasca sarjana PS Bioteknologi Universitas Gadjah Mada Martani, Erni; Program Studi Bioteknologi Universitas Gadjah Mada Triyanto, Triyanto Zainuddin, Muhammad; Program Studi Budidaya Perairan Fakultas Sains dan Teknologi Universitas Nahdlatul Ulama Jepara 2015-09-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9710 id Budidaya perikanan laut dan payau menghasilkan sejumlah besar limbah organik yang dibuang ke lingkungan sekitarnya. Sebagian besar limbah organik ini berasal dari sisa pakan, dan feses. Faktor yang menyebabkan terjadinya penurunan produksi budidaya udang adalah munculnya penyakit dan penurunan kualitas air yang dikarenakan adanya akumulasi bahan organik. Penelitian ini bertujuan untuk mengetahui kinetika pertumbuhan dan aktivitas protease bakteri sedimen mangrove dari Karimunjawa - Jepara yang berpotensi sebagai kandidat konsursium probiotik dengan kemampuan aktifitas bioremediasi. Pertumbuhan bakteri isolat 36K memiliki Fase lag (adaptasi) pada waktu kultivasi jam ke-0 hingga jam ke-4. Sedangkan pada jam ke-6 hingga jam ke-30,  isolat 36K  telah  memasuki fase logaritmik (eksponensial) yang dicirikan dengan adanya pertumbuhan yang siknifikan. Pada waktu pertumbuhan jam ke-30 diperoleh nilai OD sebesar 1,939±0,0125 dengan berat kering biomassa bakteri sebesar 1,325±0,043 mg.ml-1, laju pertumbuhan  spesifik (µ) sebesar 0,1446 jam-1, jumlah generasi 8,7609 dan waktu generasi 4,794 jam. Selanjutnya waktu pertumbuhan jam ke-36 hingga jam ke-42, sel isolat 36K  mengalami fase pertumbuhan yang relatif tetap yaitu memasuki fase stasioner. Berikutnya adalah fase kematin pada jam ke-42 hingga jam ke-48, terjadi penurunan laju pertumbuhan yang disebabkan oleh kekurangan materi pertumbuhan seperti vitamin dan unsur mineral. Hasil pengamatan menunjukkan bahwa kadar protein diawal sampai akhir penelitian mengalami penurunan sebesar  97,365%. Nilai laju penurunan kadar protein di media kultur bakteri adalah 0,255±0,005 mg.ml-1jam-1. Produksi enzim protease isolat 36K  dilakukan  ketika  biakan berumur 2 jam hingga 6 jam dengan aktivitas optimum dicapai pada 6 jam masa inkubasi fase eksponensial pertumbuhan bakteri. Kata kunci: sedimen, mangrove, bioremediasi, pertumbuhan, protease  Marine and brackishwater culture produced large number of organic waste, mostly from leftover feed and faeces, which normally released to the nearby water system and becoming source of deseases and reducing water quality.  The study was aimed to determine the growth kinetics and protease activity of 36k isolate from mangrove sediment of Karimunjawa, Jepara which possibly developed into probiotic consortium candidate with bioremediation activity capability. The study was able to describe the growth kinetics and protease activity of 36k isolate which has lag phase (adaptation) on the 0 to the first 4 hours. Meanwhile from 6th to 30th hours isolate 36k entering logarithmic phase (exponential) characterized by significant growth. At the 30th hours period the OD value was 1,939±0,0125, bacterial biomass dry weight of   1,325±0,043 mg.ml-1, specific growth rate (µ) was 0,1446 hours, number of generation 8,7609 dan regeneration time of  4,794 hour. Between 36 to 42 hours the growth of  36k isolate cell was relatively no difference indicating the stationer phase has reached followed by mortality phase between the 42–48 hours where the growth rate was decline due to the limitation of growth material such as vitamins and minerals.  The result also show that protein consentration was significantly decline up to   97,365%. The reduction of of protein content was 0,255±0,005 mg.ml-1.hour-1. The production of enzyme in cultured bacteria was conducted between first 2–6 hours and reach the optimum activity by 6 hours incubation i.e. at the exponential growth phase. The substrate consumption by 36K bacteria isolate was indicated by the decline of reduced sugar with average rate of substrate consumption of 2,0557 g.g-1. Keywords: sediment, mangrove, bioremediasion, growth, protease

oai:ojs.ejournal.undip.ac.id:article/67455 2025-12-21T07:49:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/67455 2025-12-21T07:49:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 3 (2025): Ilmu Kelautan; 329-344 Syamsuddin, Maura Fayza Dwinanda; Marine Science Department, Fisheries and Marine Sciences Faculty, Brawijaya University Nevandra, Adinda Prameswari Aisyah; Marine Science Department, Fisheries and Marine Sciences Faculty, Brawijaya University Yona, Defri; Marine Science Department, Fisheries and Marine Sciences Faculty, Brawijaya University Marine Resources Exploration and Management Research Group, Fisheries and Marine Sciences Faculty, Brawijaya University Yamindago, Ade; Marine Science Department, Fisheries and Marine Sciences Faculty, Brawijaya University Sari, Syarifah Hikmah Julinda; Marine Science Department, Fisheries and Marine Sciences Faculty, Brawijaya University Marine Resources Exploration and Management Research Group, Fisheries and Marine Sciences Faculty, Brawijaya University Yanuar, Adi Tiya; Marine Science Department, Fisheries and Marine Sciences Faculty, Brawijaya University 2025-09-10 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/67455 Pollution,;Tourism; Beach Cleanliness; Environmental Assesment; Waste Evaluation en Tourist activity significantly impacts coastal ecosystems, often leading to increased marine debris pollution. This study examines the influence of tourism on beach cleanliness by analyzing marine debris composition, abundance, and Clean Coast Index (CCI) at four recreational beaches in Prigi Bay, Trenggalek, Indonesia (Cengkrong, Prigi, Karanggongso, and Mutiara). Sampling was conducted in March–April 2024, using a 5×5 m quadrat transect method placed at 20 m intervals along the shoreline in the backshore zone. The Mann-Whitney U test was applied to assess differences in debris accumulation between weekdays and weekends. Results indicated that plastic debris was the dominant type across all sites, with debris abundance slightly higher on weekends (54%) than weekdays (46%). Moreover, the mass of accumulated debris was significantly greater on weekends (1.93 items.m⁻², 8.86 g.m⁻²) than on weekdays (1.57 items.m⁻², 4.69 g.m⁻²), primarily due to an increase in larger debris items (10–100 cm), likely associated with tourism-related waste such as food packaging and recreational items. Despite these fluctuations, all beaches exhibited "extremely dirty" CCI scores (&gt;20), indicating persistent pollution beyond tourism activity. Additional contributing factors may include inefficient waste management, fishing-related debris, and marine transport mechanisms. These findings underscore the urgent need for comprehensive waste management strategies, including source reduction, regular cleanups, improved waste disposal infrastructure, and public awareness campaigns, to mitigate long-term environmental and socio-economic impacts in Prigi Bay. Furthermore, integrating this measure into sustainable coastal tourism planning is crucial to balance recreational use with environmental preservation.

oai:ojs.ejournal.undip.ac.id:article/2232 2012-02-27T12:13:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2232 2012-02-27T12:13:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 2 (2006): Jurnal Ilmu Kelautan; 112-118 Suryono, Chrisna Adi; Jurusan Ilmu Kelautan F. Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2232 en Kawasan Segara Anakan mempunyai hutan mangrove yang paling luas di Pulau Jawa. Penelitian ini bertujuan untuk mengetahui struktur populasi dan distribusi mangrove di Segara Anakan Cilacap. Metode yang digunakan dalam penelitian ini adalah metode survey, sedangkan pengambilan sampel dengan menggunakan Point Centered Quarter Method (PCQM). Data yang telah diperoleh dianalisa untuk memperoleh nilai kepadatan relatif, dominansi relatif, frekuensi relatif dan nilai penting. Hasil penelitian menunjukan bahwa struktur populasihutan mangrove Segara Anakan Cilacap masih cukup baik dengan H&rsquo;=2,427 &ndash; 2,076 dan e = 0,686 &ndash; 0,902. Jenis mangrove yang didapatkan 10 jenis Avecinia marina, A. alba, Soneratia caseolaris, S. alba, Rhizophora apiculata, R. mucronata, Bruguiera cylindrica, B. gymnorhiza, Aegiceras corniculatum dan Nypa fruticans. Jenis mangrove yang mendominansi adalah Avecinia marina (NP= 58 - 73,5 %) dan Soneratia caseolaris (NP= 62,1 &ndash; 69,8 %)Kata kunci: Populasi, Mangrove, Segara Anakan.The mangrove areas in Segara Anakan Cilacap is the widest mangroves in the Java Island, but now that mangrove has been decreased in large. The aims of the research were to understand the population structureand distribution. The Point Centered Quarter Method (PCQM) was used to take data samplers along the tracks. The data was collected analyzed to find relative density, relative dominance, relative frequency andthe important value of each species. The result showed that the population structure at Ujung Alang Segara Anakan Cilacap was still good condition which H&rsquo;= 1,427 &ndash; 2,076, e= 0,686 &ndash; 0,902. There were 10 species found : Avecinia marina, A. alba, Soneratia caseolaris, S. alba, Rhizophora apiculata, R. mucronata, Bruguiera cylindrica, B. gymnorhiza, Aegiceras corniculatum and Nypa fruticans. The mangrove dominance was Avecennia marina (IV= 58 - 73,5 %) and Sonneratia caseolaris (IV = 62,1 &ndash; 69,8 %).Key words : Population, Mangrove, Segara Anakan

oai:ojs.ejournal.undip.ac.id:article/21521 2021-10-13T03:30:29Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/21521 2021-10-13T03:30:29Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 2 (2019): Ilmu Kelautan; 81-90 https://ejournal.undip.ac.id/index.php/ijms/article/download/21521/57430 Yusal, Muh Sri; Postgraduate Program of Environmental Science, Universitas Gadjah Mada Marfai, Muh Aris; Faculty of Geography, Universitas Gadjah Mada Hadisusanto, Suwarno; Faculty of Biology, Universitas Gadjah Mada Khakhim, Nurul; Faculty of Geography, Universitas Gadjah Mada 2019-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/21521 abundance; indicator; losari coast; Makassar; meiofauna; pollutant en The zone of Losari Coast is an icon of Makassar city, however increase activity of surrounding communities causes a decrease in the water quality. Meiofauna is an effective benthic organism used as an indicator of water quality. This study assessed the meiofauna abundance and physical-chemical parameters as water quality indicator in the Losari Coast, Makassar. The sampling method in this study was purposive sampling. The resuts showed that total meiofauna abundance identified was 66791 indv.m-2, composed of 12 phylum and 91 species or genera. Stations at the estuary of the Jeneberang and Tallo River are two sites with high level of abundance, this condition allows presence of organic contaminants triggers the high growth of meiofauna in these locations. Dissolved Oxygen is below its supposed level in waters. Acidity, phosphate and nitrate content at some of research stations exceed the threshold of their allowed presence in waters set by Indonesia government. Ostracoda, oligochaeta, polychaeta, tunicata and ciliophora are phylums with a high level of abundance, because the phylum has  high adaptability to pollutant. Good water quality is indicated by a variety of biota living in the waters, the range of diversity and uniformity indices shows that meiofauna species are categorized highly diverse and evenly distributed. The dominance index shows that there is no species was dominant, except stations around  Losari reclamation project. Temperature, current velocity, depth, brightness, salinity, pH, DO, nitrate-seawater, and phosphate-seawater correlate with meiofauna abundance. The results as a consideration for the management or monitoring of coastal environments.

oai:ojs.ejournal.undip.ac.id:article/4688 2017-08-19T22:45:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/4688 2017-08-19T22:45:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 3 (2012): Ilmu Kelautan; 119-124 Widianingsih, Widianingsih; Laboratorium Biologi Kelautan, Jurusan Ilmu Kelautan, FPIK Universitas Diponegoro Jl. Prof.Dr. Soedharto, Tembalang, Semarang, Hartati, Retno; Laboratorium Biologi Kelautan, Jurusan Ilmu Kelautan, FPIK Universitas Diponegoro Jl. Prof.Dr. Soedharto, Tembalang, Semarang, Hadi, Endrawati; Laboratorium Biologi Kelautan, Jurusan Ilmu Kelautan, FPIK Universitas Diponegoro Jl. Prof.Dr. Soedharto, Tembalang, Semarang, Iriani, Valentina R; Divisi Pembenihan Balai Besar Pengembangan Budidaya Laut Lampung Jl. Yos Sudarso, Desa Hanura, Kec. Padang Cermin, Pesawaran Lampung 35454 2012-09-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/4688 Direktorat Jenderal Pendidikan Tinggi, Kemendikbud, Republik Indonesia. en Fotoperiod memainkan peranan penting dalam proses fotosintesis pada mikroalga Nannochloropsis oculata. Fotoperiod akan mempengaruhi kadar total lipid pada berbagai jenis mikroalga. Penelitian ini bertujuan untuk determinasi kandungan lipid total mikroalga Nannochloropsis oculata yang dikultur pada berbagai kondisi fotoperiod Rancangan acak lengkap dengan tiga ulangan diterapkan pada penelitian ini. Perlakuan pada penelitian ini adalah fotoperiod 4 jam terang-20 jam gelap, 8 jam terang-16 jam gelap, 12 jam terang-12 jam gelap, dan 24 jam terang. N. oculata dikultur pada erlenmeyer 250 mL dengan sistem aerasi kontinyu dan pencahayaan 3000 lux, salinitas 33 ppt dan medium Conway. Hasil penelitian menunjukkan bahwa kandungan lipid total pada N. oculata tertinggi ditemukan pada perlakuan fotoperiod 12 jam terang-12 jam gelap) (31,8±3,03%-dw) dan kemudian diikuti pada fotoperiod 8jam terang - 16 jam gelap (25,2±2,19%-dw) dan fotoperiod 24 jam terang (23,2 %-dw). Pada perlakuan fotoperiod 8 jam terang-16 jam gelap dan fotoperiod 12 jam terang-12 jam gelap pada media pemeliharaan N.oculata menunjukkan hasil kadar lipid total yang lebih besar pada fase stasioner dibandingkan dengan eksponensial.Kata kunci: Nannochloropsis oculata, total lipid, fotoperiodPhotoperiod has important role on the photosynthesis process of microalgae Nannochloropsis oculata. Photoperiod also influences on total lipid content of various microalgae. This research has purpose to examine the effect of nutrient phosphate and nitrate composition to the total lipid content of N. oculata belong to class Eustigmatophyceae. There were four treatments of photoperiod as follows; (a) photoperiod A (4:20 hour light:dark);(b) photoperiod B (8:16 hour light:dark); photoperiod C (12:12 hour light:dark); (and (d) photoperiod D (24 hour light). There were three replicates for each treatment. The volume of culture medium was 250 mL for each treatment with continuously aeration and illumination (3000 lux). According to the research, the highest total lipid content of N. oculata had been found on the treatment of photoperiod 12:12 hour light:dark 31,8 ± 3,03 %-dw, and then followed by photoperiod 8:16 hour light dark as amount 25,2 ± 2,19 %-dw and 24 hour light (23,2 ± 1,99%-dw), and then followed by photoperiod 24 hour light. Differences of photoperiod 8:16 hour light:dark and photoperiod 12:12 hour light:dark on culture medium of N. oculata showed result that there were differences of total lipid content on the stationary and exponential phase. The highest percentage of total lipid was fund in cell of N. oculata grown under treatment of photoperiod 12:12 hour light:dark. The treatment of photoperiod 8:16 hour light:dark and 12:12 hour light:dark in the N. oculata culture showed result that the total lipid content on stationary phase was greater than exponential phase.Key words: Nannochloropsis oculata, total lipid, photoperiod

oai:ojs.ejournal.undip.ac.id:article/52877 2023-05-21T03:05:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/52877 2023-05-21T03:05:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 1 (2023): Ilmu Kelautan; 113-124 Muskananfola, Max Rudolf; Department of Aquatic Resources, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Latifah, Nurul; Department of Aquatic Resources, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Hartoko, Agus; Department of Aquatic Resources, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Febrianto, Sigit; Department of Aquatic Resources, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Winterwerp, Johan Christian; Faculty of Civil Engineering and Geosciences, Department of Hydraulic Engineering, Delft University of Technology 2023-03-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/52877 CO2 flux ; pCO2 seawater; Dissolved Inorganic Carbon, Semarang Bay en The CO2 characteristics of the Semarang Bay system on the Northern coast of Java were investigated to understand the roles in carbon dioxide flux. The flux of carbon dioxide at the sea surface between seawater and atmosphere is essential for mitigating atmospheric CO2.  The aims of this study were to assess the variation of CO2 partial pressure seawater (pCO2sea) and CO2 flux and to analyse the water quality variable which has the larger influence on CO2 flux in the waters of Semarang Bay. The variables in this study were temperature, pH, salinity, and DO. Different methods were adopted in the analysis of water samples: spectrophotometric to measure chlorophyll-a and phosphate and titration method to measure Total Alkalinity (TA) and Dissolved Inorganic Carbon (DIC). A CO2 meter was used to measure the CO2atm. The lowest CO2 flux value was (1.86 mmol CO2 m-2 day-1) during the morning period while the pCO2sea reached 461.04 μatm and CO2 flux 83.79 mmol CO2 m-2 day-1 at night. At noon time, with increased temperature, pCO2sea was 461.04 μatm, and CO2 flux was 83.79 mmol CO2 m-2 day-1. The high concentration of chlorophyll-a ranged between 3.55–4.11 mg.L-1.  This chlorophyll-a concentration has a negative correlation with CO2 flux, and it was found that TA and DIC concentrations have no relationship with CO2 flux. Based on PCA analysis, it was found that the variability of CO2 flux in Semarang Bay is influenced by the variability of pCO2sea, sea surface temperature and kwa (affected by wind speed).

oai:ojs.ejournal.undip.ac.id:article/591 2012-02-27T23:57:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/591 2012-02-27T23:57:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 1 (2007): Jurnal Ilmu Kelautan; 53-58 Rinitasih, Ita; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang Tilp./faks. (024) 7474698 Widianingsih, Widianingsih 2010-11-22 06:26:21 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/591 id Beberapa bivalve yang hidup di habitat padang lamun dipengaruhi oleh berbagai faktor antara lain tegakan&nbsp;dan jenis lamun, jenis substrat, kandungan bahan organik pada sedimen serta dipengaruhi oleh parameter lingkungan dan kualitas air. Pengambilan sampel bivalve dilakukan secara random dengan memperhatikan&nbsp;mintakat perairan yang memiliki hamparan padang lamun yang cukup luas. Berdasarkan hasil penelitian&nbsp;Thaiassia hemprichii mendominansi jenis lamun dengan nilai kerapatan 195 ind/m2&nbsp;sampai dengan 598,3 ind/m2, Anadara ferruginea mendominasi bivalve di perairan Teluk Awur dengan nilai kelimpahan rata-rata 2,25&nbsp;ind/m2., kemudian diikuti oleh Gafrarium tumidum. (1,75 ind/m2). Hal ini menunjukkan bahwa Anadara&nbsp;ferruginea dan Garrarium tumidum berassosiasi dengan lamun Thaiassia hemprichii. Pola sebaran A. ferruginea&nbsp;merata untuk semua stasiun, namun untuk G. tumidum pola sebaran cenderung mengelompok.Kata kunci&nbsp;: bivalve, lamun, kelimpahan, distribusiSome of bivalves that live in seagrass ecosystem have been influenced by many factors, those are seagrassspecies, substrate and organic matter that are found in sediment, environment and water qualities factors.Bivalve sampling were taken randomly which gave attention on the waters that has vast seagrass bed. Theresult showed that in Teluk Awur water, the most dominance of seagrass species is Thalassia hemprichiiwhich has density value 195 ind/m2 till 598.3 ind/m2. The dominance bivalve is Anadara ferruginea withaverage of abundance value 2.25 ind/m2 and then followed by Gafrarium tumidum (1,75 ind/m2). Weconclude that Anadara ferruginea and Gafrarium tumidum can grow well and associate with Thalassiahemprichii. According the result, distribution parttern A ferruginea has uniform, and for Gafrarium tumidumhas distribution parttern clumped.Key words: Bivalve, Seagrass.

oai:ojs.ejournal.undip.ac.id:article/9354 2017-10-27T08:50:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9354 2017-10-27T08:50:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 4 (2016): Ilmu Kelautan; 169-176 Yunarty, Yunarty; Bogor Agricultural University Yuhana, Munti; Bogor Agricultural University Widanarni, Widanarni; Bogor Agricultural University 2016-12-05 15:15:51 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9354 DIKTI Kemenristek; BBPBAP SITUBONDO Kementerian Kelautan Perikanan en White spot disease (WSD) is one of infectious disease in shrimp caused by white spot syndrome virus (WSSV). This study aimed to determine the dosage immunological effects and growth performances of microencapsulated synbiotic (Bacillus NP5 and mannan oligosaccharide) at different dosages on Pacific white shrimp.  The microencapsulated synbiotic   was administered as feed supplementation  against the co-infection of   WSSV and Vibrio harveyi. Synbiotic was encapsulated by spray drying method, further feed supplemented to Pacific white shrimp for 30 days at a  dosages of 0.5% (A), 1% (B), 2% (C) and control treatments, i.e. without any microencapsulated synbiotic administration as positive control (D) and negative control (E). The challenge test was performed on day 30 after feeding supplementation, then the experimental shrimps were injected by WSSV intramuscularly   at the infective dosage of 104 copies.-ml-1. Afterwards,   24 hours after WSSV injection the shrimps were immersed in water contained cells suspension of V. harveyi  at the cells population dosage of 106 CFU-.ml-1. All synbiotic treatments showed better results with the values of Total Haemocyte Count (THC), Phenoloxidase (PO) and Respiratory Burst (RB), were higher (P&lt;0.05) compared to positive control. The specific growth rates (SGR) of A, B and C showed higher than both controls of D and E. The feed conversion ratio (FCR) value of synbiotic treatments were lower (P&lt;0.05) than both controls. However, the administration of microencapsulated synbiotic have not been able to prevent heavy impact of WSSV and V. harveyi co-infection due to lower SR and mortality pattern which continued to increase.  Keywords: Synbiotic, Litopenaeus vannamei, WSSV, Vibrio harveyi, co-infection

oai:ojs.ejournal.undip.ac.id:article/2272 2012-02-29T00:02:02Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2272 2012-02-29T00:02:02Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 3 (2005): Jurnal Ilmu Kelautan; 149-157 Ghofar, Abdul; Faculty of Fisheries and Marine Science Diponegoro University, Kampus FPK Tembalang email: aaghofar@indosat.net.id Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2272 en Perikanan pelagik kecil dari empat ekosistem di Indonesia diperbandingkan, meliputi perairan pantai di sebelah selatan Jawa Timur, Selat Bali, Selat Alas dan Selat Sape. Pengkajian dimaksudkan untuk menentukan adatidaknya, dan kalau ada &ndash;bagaimana sifatnya, interaksi antar jenis-jenis ikan utama, dan antar ke empat perairan tersebut, sehingga dapat dimanfaatkan dalam mempertimbangkan pengembangan riset dan pengelolaan sumberdaya hayati laut pada masa-masa mendatang. Pengkajian ini menggunakan data tangkapan ikan dengan rentang-waktu 28 tahun, mulai 1976 sampai 2003, yang dikumpulkan dari pusat-pusat pendaratan ikan dan Dinas-dinas Kelautan dan Perikanan tingkat I dan Tingkat II di wilayah studi. Hasil pengkajian menunjukkan dengan jelas adanya ko-eksistensi antar sumberdaya ikan pelagis kecil di ke empat wilayah perairan. Interaksi kelompok jenis antar ke empat ekosistem, serta implikasinya terhadap riset kelautan dan perikanan dibahas pula dalam tulisan ini.Kata kunci: ikan pelagik kecil, indeks osilasi selatan, aliran-deras Indonesia, upwellingSmall pelagic fisheries of four ecosystems in Indonesia are compared, covering the south coast of East Java, Bali Strait, Alas Strait and Sape Strait, to explore potential interactions between major species, and ofdifferent localities, of small pelagic components caught, which may then be taken into fisheries research and management considerations. A 28-years catch data time series used for analysis were taken from major fishing harbours, landing places and fisheries offices, and go back as far as 1976-2003. There is a clear co-existence in the overall small pelagic resources within the areas studied. Interactions of the species group between ecosystems and their substantial implication in marine and fisheries research are also discussed in this paper.Key words: small pelagics, southern oscillation index, Indonesian through-flow, upwelling

oai:ojs.ejournal.undip.ac.id:article/29766 2021-10-13T00:57:32Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/29766 2021-10-13T00:57:32Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 3 (2020): Ilmu Kelautan; 127-134 https://ejournal.undip.ac.id/index.php/ijms/article/download/29766/86536 Indarjo, Agus; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Salim, Gazali; Department of Aquatic Resource Management, Faculty of Fisheries and Marine Science, Borneo University Tarakan Amir, Fahrizal; Department of Aquatic Resource Management, Faculty of Fisheries and Marine Science, Borneo University Tarakan Supriadi, Supriadi; Department of Aquatic Resource Management, Faculty of Fisheries and Marine Science, Borneo University Tarakan Soejarwo, Permana Ari; Research Center for Marine and Fisheries Socio Economics, Ministry of Maritime Affairs and Fisheries Republic of Indonesia Nugraeni, Christine Dyta; Department Technology of Fishery Product, Borneo University Tarakan Prakoso, Lukman Yudho; Indonesia Defense University Ambariyanto, Ambariyanto; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Firdaus, Muhammad; Department of Aquatic Resource Management, Faculty of Fisheries and Marine Science, Borneo University Tarakan Ransangan, Julian; Borneo Marine Research Institute, University Malaysia Sabah 2020-09-02 21:15:52 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/29766 Fish Characteristics; Growth Analysis; Layur Fish; Lepturacanthus savala; Von Bertalanffy Model en The city of Tarakan, Indonesia, benefits economically from abundant marine biological resources, one of which is the layur fish, known commercially as ribbonfish. The purpose of this study was to analyze the growth character of the layur fish (Lepturacanthus savala) obtained from the juata waters of Tarakan City.  The method of this quantitative and descriptive study was to analyze the growth of layur fish Lepturacanthus savala in the Juata waters off the coast from the city of Tarakan. Body shape, length, weight, and ratio sex data were collected from sites selected by the purposive sampling method based on trawl fishing catch. Secondary data, collected from interviews of fishing personnel, included the number of catches using trawling gear and trawl fishing location. The length ranges of male from 20,4 to 54,0 cm with an average length of 37,2±16.8 cm (n = 255) and the length ranges of female from 20,5 to 68 cm with an average length of  44,25±23.75 cm (n = 275). The results showed that maximum length of male layur fish was smaller than the maximum length of female fish, which were 59.352 cm at 267 d and 72.638 cm at 315 d, respectively. The result shows a negative allometric growth pattern male and female layur fish was found to be the same and sex ratio of male to female has a ratio of 1,0: 1,8 with a percentage of males at 48.11% and females at 51.89%. The majority of male and female fish exhibited a thin body shape (51,4% of male and 52% of female).

oai:ojs.ejournal.undip.ac.id:article/49217 2024-03-31T21:48:11Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/49217 2024-03-31T21:48:11Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 1 (2024): Ilmu Kelautan; 119-132 Firdaus, Mochamad Ramdhan; Research Center for Oceanography, National Research and Innovation Agency (BRIN), Indonesia Rachman, Arief; Research Center for Oceanography, National Research and Innovation Agency Fitriya, Nurul; Research Center for Oceanography, National Research and Innovation Agency Wijayanti, Lady Ayu Sri; Fisheries Department, Faculty of Agriculture, Gadjah Mada University Rozirwan, Rozirwan; Marine Science Department, Sriwijaya University Purwandana, Adi; Research Center for Oceanography, National Research and Innovation Agency Prayitno, Hanif Budi; Research Center for Oceanography, National Research and Innovation Agency Alfiansyah, Yustian Rovi; Research Center for Oceanography, National Research and Innovation Agency Research Center for Applied Microbiology, National Research and Innovation Agency Polar Biological Oceanography, Alfred Wegener Institute||Germany Sianturi, Oksto Ridho; Marine Biology Department, Bremen University Sugeha, Hagi Yulia; Research Center for Oceanography, National Research and Innovation Agency 2024-03-27 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/49217 Celebes sea; deep chlorophyll maxima; generalized additive model; Mollucas sea; nutrients en The chlorophyll-a is an important biological parameter that could act as a proxy to indicate the abundance of phytoplankton and the primary productivity of an aquatic ecosystem. This paper investigates the vertical and horizontal variability of chlorophyll-a in the waters of Sangihe and Talaud Islands, Indonesia, and its correlation with water environmental parameters. In this study, the distribution of chlorophyll-a, temperature, salinity, and nutrients (NO3 and PO4) from the surface to a depth of 200 m (photic zone) was measured at 29 research stations. The results showed that the distribution of chlorophyll-a in the waters of the Sangihe-Talaud Islands was varied vertically and horizontally. The waters around the Sangihe Islands generally exhibited a higher chlorophyll-a distribution and shallower Deep Chlorophyll Maxima compared to the water around the Talaud Islands. The concentration of chlorophyll-a varied between 0.0017 and 1.2155 mg.m-3, with most of the water column in Sangihe-Talaud considered oligotrophic, although some stations or depths were mesotrophic or slightly eutrophic. The maximum chlorophyll-a concentration was found in the sub-surface layer at depths between 46 and 101 m. The low N:P ratio (&lt;16) and N:Si ratio (&lt;1) indicate that the water columns of Sangihe-Talaud, up to a depth of 200m, were N-limited. Based on the GAM analysis, chlorophyll-a concentration in Sangihe-Talaud waters was primarily regulated by temperature, salinity, and the N:P ratio, with weak influence from phosphate and the N:Si ratio. The analysis also suggests that primary productivity in Sangihe-Talaud is sensitive to temperature changes, indicating its vulnerability to future warming events.

oai:ojs.ejournal.undip.ac.id:article/1611 2012-02-17T22:30:54Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1611 2012-02-17T22:30:54Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 3 (2009): Jurnal Ilmu Kelautan; 133-137 Ridlo, Ali; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang, Indonesia Telp/Fax. 0247474698; 08156557114; email: aliridlo26@yahoo.co.id Pramesti, Rini; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang, Indonesia Telp/Fax. 0247474698; 08156557114; email: aliridlo26@yahoo.co.id 2012-02-05 19:48:15 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1611 id Penelitian ini bertujuan untuk menganalisis potensi ekstrak dari rumput laut Dictyota sp., Gracilaria sp., Padina sp., dan Sargassum sp. sebagai imunostimulan sistem pertahanan tubuh non spesifik udang L. vannamei. Rumput laut diekstraksi dengan cara direbus dalam air mendidih selama 2 jam. Suplementasi ekstrak pada pakan udang buatan diberikan dengan dosis 10 g/kg pakan. Hasil penelitian menunjukkan adanya peningkatan jumlah hemosit dan aktivitas fagositosis udang L. vannamei akibat pemberian ekstrak rumput laut dibandingkan kontrol. Peningkatan tersebut terlihat pada&nbsp; jumlah hemosit udang L. vannamei&nbsp; yang diberi ekstrak Gracilaria sp. pada hari ke-8 , Dictyota&nbsp; sp. dan Sargassum sp pada hari ke 12,&nbsp; sedangkan&nbsp; peningkatan aktifitas fagositosis terjadi pada perlakuan dengan ekstrak Dictyota sp., Gracilaria sp. dan Sargassum sp. pada hari ke-8. Pemberian ekstrak Sargassum sp memberikan hasil terbaik yaitu untuk jumlah hemosit 1,127&plusmn;0,260 pada hari ke-12 dan aktifitas fagositosis 214,061&plusmn;15,955 pada hari ke- 8. Kata kunci : Imunostimulan, rumput laut, L. vannamei&nbsp;Study on application of seaweed Dictyota sp., Gracilaria sp., Padina sp. and Sargassum sp. extract as imunostimulant agent for non-specific defense system of white shrimp (L. vannamei) was conducted. Air - dried seaweed was extracted by boiling in water for 2 hours then fortified into shrimp feed pellet with concentration of 10g/kg pellet. Haematological parameters of Total Haemocyte Count (THC) and Phagocytosist Activity (PA) was then tested at 4, 8, 12 days period after initial treatment. The result showed that fortification of seaweed extract was increased the number of haemocyte was clearly shown at day 8 of Gracilaria sp. extract treatment and day 12 of Dictyota sp. and Sargassum sp. treatment. Meanwhile phagocytosist activity was clearly increased at day 8 of Dictyota sp., Gracilaria sp. and Sargassum sp treatment.&nbsp; Extract&nbsp; of Sargassum sp. gave&nbsp; the most significant effect with total haemocyte of 1,127 &plusmn; 0,260 at day 12th and phagocytosist activity of 214,061&plusmn; 15,955 at day 8th. Key words : Immunostimulant, seaweed, L. vannamei

oai:ojs.ejournal.undip.ac.id:article/15685 2021-10-13T05:31:18Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/15685 2021-10-13T05:31:18Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 3 (2017): Ilmu Kelautan; 155-160 Ngginak, James; Graduate School of Biology, Satya Wacana Christian University, Salatiga Mangibulude, Jubhar C; Halmahera University Rondonuwu, Ferdy S; Faculty of Science and Mathematics, Satya Wacana Christian University 2017-08-22 13:09:26 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/15685 en Sand lobsters (Panulirus homarus) are organisms that play an important role in supporting a society’s economy. Lobsters have a business appeal due to their high demand, enjoyable taste, as well as significant nutritional content. It is interesting that sand lobster eggs have a yellow orange color as an indicator of the presence of carotenoid content. Related with advancements in research and the utilization of carotenoids, this research identifies carotenoids and tests carotenoid antioxidants from sand lobster (Panulirus homarus) egg extract. In identifying carotenoids in sand lobster egg extract, HPLC (high performance liquid chromatography) (shimadzu LC-10AD, Japan) is used. In testing carotenoid antioxidants from sand lobster eggs, a DPPH method is utilized. The identification results with HPLC reveal that the sample contains carotenoids. The kinds of carotenoids identified are dinoxanthin, diadinoxanthin, zeaxanthin, lutein, astaxanthin, and violaxanthin. Among the six kinds of carotenoids identified, lutein is the type of carotenoid that has the highest concentration. These carotenoid compounds are detected in wavelengths of 400-500 nm. The test results of antioxidant power reveal that to hamper free radicals (IC50), a sample concentration of 6675.25 µg.ml-1 is needed. The ability to hinder free radicals from a sample extract is mostly conducted by lutein, zeaxanthin, and astaxantin. If seen from the analytical results, it can be surmised that sand lobster eggs contain carotenoids that can be used as a carotenoid source for humans.   Keywords : Sand Lobster, HPLC, Carotenoids, DPPH, Antioxidant

oai:ojs.ejournal.undip.ac.id:article/2303 2012-03-01T08:38:13Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2303 2012-03-01T08:38:13Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 1 (2005): Jurnal Ilmu Kelautan; 11-16 Fitri, Aristi Dian Purnama; Laboratorium Teknologi Penangkapan Ikan, Program Studi Pemanfaatan Sumberdaya Perikanan, Jurusan Perikanan, Fakultas Perikanan dan Kelautan Universitas Diponegoro, Semarang, Indonesia. Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2303 en Penelitian ini dilakukan untuk mengetahui hubungan antara ketajaman penglihatan dan jarak pandangpenglihatan pada ikan kerapu lumpur (Greasy grouper). Sejumlah lima belas ekor ikan kerapu lumpur dengan ukuran panjang total tubuh 140-350 mm TL dianalisis menggunakan prosedur histologi retina mata untuk mendapatkan jumlah kepadatan sel kon tertinggi sebagai dasar penentuan ketajaman penglihatan dan jarak pandang penglihatannya. Nilai kepadatan sel kon tertinggi adalah 404 sel/0,01 mm2 untuk ukuran panjang tubuh 110 mm BL dan 256 sel/0,01 mm2 untuk ukuran panjang tubuh 280 mm BL. Sedangkan nilai ketajaman penglihatan untuk ikan kerapu lumpur berturut-turut adalah 0,089 untuk ukuran panjang tubuh 110 mm BL dan 0,149 untuk panjang tubuh 280 mm BL. Dengan dasar ketajaman penglihatan yang dimiliki, maka diketahui pula jarak pandang maksimum penglihatan sejauh 1,8452 m untuk ukuran panjang tubuh 110 mm BL dan 3,0845 m untuk ukuran tubuh 280 mm BL.Kata kunci: Ikan kerapu lumpur (Epinephelus tauvina), Panjang tubuh, Kepadatan sel kon, Ketajamanpenglihatan, Jarak pandang maksimum.Objective of the study is to investigate relation between visual acuity and maximum sighting distance of Ephinephelus tauvina. Fifteen Ephinephelus tauvina of 140-350 mm total length TL was analyzed by usinghistological examination of their retinas to obtain highest density of cone cells as based on visual acuity and maximum sighting distance.The maximum cone densities were 404 cells/0.01 mm2 for the fish of 110 mm body length BL and 256 cells/0.01 mm2 for the fish of 280 mm body length BL. The visual acuity for each specimens, were 0.09 for fish with 110 mm body length BL and 0.149 for fish with 280 mm body length BL. Visual acuty as determine maximum sighting distance were 1.8452 m for 110 mm body length BL and 3.0845 m for 280 mm body length BL.Key words: Ephinephelus tauvina, Body length, Cells cone density, Visual acuity, Maximum SightingDistance.

oai:ojs.ejournal.undip.ac.id:article/38795 2021-10-13T00:51:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/38795 2021-10-13T00:51:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 2 (2021): Ilmu Kelautan; 125-134 Suryono, Suryono; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Ambariyanto, Ambariyanto; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Munasik, Munasik; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Wijayanti, Diah Permata; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Ario, Raden; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Pratikto, Ibnu; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Taufiq-Spj, Nur; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Canavaro, Syahrial V.; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Anggita, Tiara; Department of Oceanography, Faculty of Fisheries and Marine Science, Diponegoro University Sumarto, Bayu Kreshna Adhitya; Tropical Biosphere Research Center, University of the Ryukyus Cullen, Justin; Tasmania University 2021-06-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/38795 Physical parameters; Anthropogenic; Insitu; Line Intercept Transect; Manta Tow; Abiotic en Coral reefs currently are suffered from natural factors along with increasing anthropogenic activity. Panjang Island, a small reef island located in Jepara Regency, may also be experiencing such conditions. Therefore, this work was aimed to observe the condition of the coral cover of Panjang Island. Line intercept transect was applied to survey the coral cover and mortality index from fourteen stations. Insitu data consisted of the bottom substrate composition of the reefs and the physical parameters of the sea. The secondary data, i.e. coral reef area maps from 2001 to 2019 were taken from Landsat Image 7 and 8, data of wind were obtained from www.ogimet.com, while tidal data were collected from BMKG. The bathymetry was determined from the Geospatial Information Agency data, salinity global analysis forecast Phy 001.024 (CMEMS). Sea surface temperature (SST), and chlorophyll-a distribution were analyzed using ENVI software. The result showed that Panjang Island has a poor to the moderate condition of hard coral.  Two out of six categories of abiotic and dead coral were found to be high. The mortality index of coral was in the high category (average 0.52). During research periods the sea waters were characterized by high sea surface temperature (29.34-30.94°C), chlorophyll-a was also tended to be high (0-2.65 mg.m-3), and an average of salinity was high 32 ‰. The weak currents came to all sides of the island, therefore the coral reef was not exposed to extreme currents. The waves came from the east, then the energy decreases after being blocked by coral reefs on the eastern side of the island, so that coral reefs in the northeast and south sides were safer to be exposed. The results suggest that hydrodynamic ecology directly or indirectly affected the percentage of coral cover and mortality index at the reefs of Panjang Island.

oai:ojs.ejournal.undip.ac.id:article/7216 2020-04-17T05:59:29Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7216 2020-04-17T05:59:29Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 1 (2014): Ilmu Kelautan; 55-62 Pringgenies, Delianis; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Jl. H. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275 Renta, Person Pesona; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Jl. H. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275 2014-03-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7216 en Bakteri yang resisten terhadap beberapa jenis antibakteri ini dikenal dengan bakteri multi drug resistant (MDR).Untuk mengatasi permasalahan tersebut, perlu dilakukan pencarian senyawa antibiotik baru yang lebih efektif dan efisien dalam mengatasi permasalahan bakteri MDR. Penelitian bertujuan untuk mengetahui potensi bakteri yang bersimbiosis dengan gastropoda Pleuroploca trapezium sebagai sumber antibakteri MDR. Sampel Moluska dikoleksi dari perairan Ternate, Maluku. Tahapan penelitian meliputi isolasi bakteri, skrining  bakteri simbion yang potensi sebagai anti bakteri MDR, uji antibakteri, isolasi bakteri patogen klinis MDR; uji sensitivitas anti-bakteri, ekstraksi, amplifikasi dan sekuensing DNA. Hasil 16S urutan r-DNA dianalisis dan diedit menggunakan program Genetix dan diikuti dengan analisis urutan 16S rDNA. Hasil menunjukkan bahwa terdapat 19 isolat bakteri dengan 5 bakteri aktif yang berasosiasi dengan Pleuroploca trapezium. Berdasarkan besarnya zona hambat yang dibentuk dan konsistensi munculnya zona hambatan, isolat terbaik adalah TPT 4.7. Isolat ini memiliki hubungan yang dekat dengan Paracoccus  sp. MBIC4019 dengan homologi sebesar 95% yang menunjukkan kekerabatan ditingkat genus. Hasil penelitian ini memberikan harapan adanya potensi besar sebagai bahan antibakteri baru. Kata kunci: antibakteri, simbion, Pleuroploca trapezium, multi drugs resistantThe bacteria resistant to some antibiotics are known as multi drug resistant (MDR). To overcome the problem, it is needed to search for a new antibiotic compounds more effectively and efficiently. This study aims to identify potential from symbionts of Pleuroploca trapezium as a source of antibacteria MDR and identifying the bacteria that were active against the MDR. Samples were collected from Ternate, Maluku. Isolation of symbiotic bacteria, screening for bacteria which producing secondary metabolites as anti-MDR bacteria, antibacterial test, isolation of clinical pathogenic bacteria of MDR. Conducting anti-bacterial sensitivity test,  sensitivity test for antibacterial,  DNA exctraction, DNA amplification based on PCR method, DNA sequencing.  Result of 16S r-DNA sequence was then analyzed and edited using GENETYX program and followed by 16S rDNA sequence analysis. Screening of bacteria associated with P. trapezium resulted in 19 isolates with 5 active bacteria. Based on the size of the zone forming and the consistency of zone, so the best isolate is TPT 4.7. The identification shows that TPT 4.7 has a close relationship with the Paracoccus sp. MBIC4019 with homologi of 95%, which shows the relationship at the genus level. Its suggest that these results are very promising as a new antibacterial material. Keywords: antibacterial, symbiotic bacteria, Pleuroploca trapezium, multi drugs resistant

oai:ojs.ejournal.undip.ac.id:article/65906 2024-12-23T10:10:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/65906 2024-12-23T10:10:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 4 (2024): Ilmu Kelautan; 456-466 Fahrudin, Mokhamad; Division of Anatomy, Histology and Embryology, School of Veterinary Medicine and Biomedical Sciences, IPB University Gusdinar, Rizal; Division of Reproduction and Obstetrics, School of Veterinary Medicine and Biomedical Sciences, IPB University Arifiantini, Raden Iis; Division of Reproduction and Obstetrics, School of Veterinary Medicine and Biomedical Sciences, IPB University Prasetyaningtyas, Wahono Esthi; Division of Anatomy Histology, and Embryology, School of Veterinary Medicine and Biomedical Sciences, IPB University Adnyane, I Ketut Mudite; Division of Anatomy Histology, and Embryology, School of Veterinary Medicine and Biomedical Sciences, IPB University Elmanaviean, Muhammad; Wersut Seguni Indonesia Animal Park Nugraha, Arifin Budiman; Division of Parasitology and Medical Entomology, School of Veterinary Medicine and Biomedical Sciences, IPB University Karja, Ni Wayan Kurniani; Division of Reproduction and Obstetrics, School of Veterinary Medicine and Biomedical Sciences, IPB University 2024-12-11 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/65906 dolphin; sperm; preservation; motility; viability; liquid-storage en Indo-Pacific bottlenose dolphin (Tursiops aduncus) is a marine mammal that lives in relatively small populations. The geographic ranges of this species are susceptible to the effects of human activities, thereby necessitating conservation efforts to prevent extinction. Therefore, this study aimed to evaluate the daily quality of dolphin sperm after several days of refrigeration. The sperm of two male dolphins were stored at 4oC for 4 days, and the quality was observed daily to determine the motility, viability, membrane integrity, and sperm abnormalities. Sperm samples were divided into four groups, consisting of two centrifuged followed by the removal of seminal plasma, and two groups without centrifugation, containing 100x106 and 200x106 sperm/ml each. After liquid storage, the motility of sperm was 63-75% with no significant reduction in the first 3 days. Sperm viability following storage was 65-75% and the percentage with abnormal morphology ranged from 2-6%. Furthermore, there was no significant increase in abnormal morphology of sperm on any day of storage for 3 days. Sperm membrane integrity was 36-49%, with no significant reduction in the membrane integrity in the first 2 days. There was no significant difference in sperm quality, although centrifugation and removal of seminal plasm had a slight effect. The results of this study showed that Indo-Pacific bottlenose dolphin sperm could be stored for a short period as liquid storage while maintaining a quality that allows for future use.

oai:ojs.ejournal.undip.ac.id:article/1839 2017-08-19T22:47:30Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1839 2017-08-19T22:47:30Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 1 (2011): Ilmu Kelautan; 9-15 Permata W, Diah; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jalan Prof. Soedharto SH, Tembalang, Semarang, 20725, E-mail: diah_permata@mail.com Indrayanti, Elis; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jalan Prof. Soedharto SH, Tembalang, Semarang, 20725 Subagiyo, Subagiyo; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jalan Prof. Soedharto SH, Tembalang, Semarang, 20725 2012-02-11 14:35:13 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1839 id Binatang karang diketahui memiliki kandungan lemak dalam jaringan tubuhnya. Lemak dijumpai dalam bentuk lemak struktural atau tersimpan sebagai cadangan. Lemak tersebar dan berasosiasi dengan sel di polip maupun zooxanthellae. Kandungan dan komposisi jenis lemak dapat dimanfaatkan sebagai indikator kesehatan koloni karang. Metabolisme lemak dilaporkan berhubungan dengan proses reproduksi binatang karang. Komposisi dan kandungan lemak dapat digunakan untuk memprediksi waktu spawning pada karang Famili Acroporidae. Meski pengetahuan tentang kandungan lemak pada binatang karang memberi banyak manfaat, namun hingga kini di Indonesia penelitian tentang kandungan lemak pada binatang karang belum pernah dilakukan. Penelitian ini dilakukan untuk memberi gambaran komposisi asam lemak yang terdapat pada karang Acropora yang dikoleksi dari Kepulauan Karimunjawa. Komposisi asam lemak dianalisis dengan Kromatografi Gas. Hasil analisis komposisi asam lemak menunjukkan tidak terdapat perbedaan komposisi asam lemak antara Acropora humilis dan A. hyacinthus, yang dikoleksi dari Pulau Sambangan maupun Cemara Kecil. Kandungan lemak pada kedua species didominasi oleh asam palmitat (53-74%), asam stearat (10,2- 19,92%), dan asam oleat (4,8-8,75%). Perbedaan urutan dan jumlah asam lemak berikutnya, mengacu kepada perbedaan species. Karakteristik kandungan&nbsp; dan&nbsp; komposisi&nbsp; asam&nbsp; lemak&nbsp; binatang&nbsp; karang&nbsp; dapat&nbsp; digunakan untuk&nbsp; khemotaksonomi.&nbsp; Data komposisi lemak yang diperoleh juga dapat digunakan sebagai acuan kandungan asam lemak pada kondisi normal, mengingat bleaching sering terjadi pada kedua lokasi sampling. Kata kunci: Scleractinian, asam lemak, kesehatan karang, Acropora&nbsp;Corals contain large amounts of lipid in their tissues. Lipids may be used for cell structure or energy storage. Lipids were distributed among coral cells or zooxanthellae. Fatty acids analysis has been proved useful as biomarker in stress studies. Lipids also play key role in metabolism of gametogenesis and synchrony of coral spawning. Though fatty acids signature was reported useful for various studies, however, none of studies was done on fatty acids composition of Indonesian corals. The purpose of this study was to survey the lipid composition of Acropora humilis and A. hyacinthus collected from Sambangan and Cemara Kecil Island. Analysis was made of fatty acid composition using Gas Chromatography.&nbsp; Results show fatty acid composition of two corals species was similar regardless of sampling location. Composition of fatty acids was dominated by palmitic acid ranging from (53-74%), followed by stearic acid (10,2-19,92%) and oleic acid (4,8-8,75%) in both species. However, the order of dominancy of the next fatty acid is depend on coral species. Indeed, fatty acid signature was reported to be useful for chemotaxonomy of corals species. The data also useful as data base of lipid composition at normal condition, since bleaching was reported to occur repeatedly from the sampling locations. Key words: Scleractinian, fatty acids, coral physiology, Acropora

oai:ojs.ejournal.undip.ac.id:article/19352 2019-03-26T05:28:15Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19352 2019-03-26T05:28:15Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 2 (2002): Jurnal Ilmu Kelautan; 95-102 Yulianto, Bambang; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro 2009-06-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19352 en Efek toksisitas sublethal cadmium terhadap struktur insang dan epipodite dari udang Penaeus japonicus dipelajari. Setelah pemaparan selama 4 hari, kadmium merubah struktur insang dari udang, akumulasi hemocyte dalam vena dan Iamela, epithelium insang mengalami disorganisasi dan kanal hemolympha distal menjadi buntu. Struktur dari epipodite juga terganggu: cadmium menyebabkan nekrosis pada permukaan. Kerusakan struktur insang dan epipodit ini menjadi argumen penurunan kapasitas hypo- dan hyper-osmoregulasi udang ini. Kata kuncl: kadmium, struktur, Penaeus japonicus, insang, epipodite.  The effect of sublethal toxicity of cadmium on the structure of gill and epipodtte of the shrimp Penaeus japonicus was studied. After 4 days of exposure, cadmium affected the gill structure of shrimp: hemocyte accumulate in vessels/channelsand lamellas, the gill epithelium is disorganised and the distal hemolymphatic lacuna is clogged. The structure of epipodites is also altered: cadmium causes superficial necrosis. The damage of gill and epipodite structure becomes a reason on the decrease of hypo- and hyper­ osmoregulatory capacity in this shrimp.Keywords: cadmium, structure, Penaeus Iepontcus. gill, epipodite.

oai:ojs.ejournal.undip.ac.id:article/2344 2012-03-03T05:38:02Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2344 2012-03-03T05:38:02Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 4 (2004): Jurnal Ilmu Kelautan; 230-237 Ismunarti, Dwi Haryo; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Kampus Tembalang, Universitas Diponegoro, Semarang, Indonesia Subagiyo, Subagiyo; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Kampus Tembalang, Universitas Diponegoro, Semarang, Indonesia Azizah TN, Ria; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Kampus Tembalang, Universitas Diponegoro, Semarang, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2344 en Fungsi peluang poisson merupakan standar model untuk variabel cacah. Sebagai contoh banyaknya makrobenthos dan faktor-faktor oseanografi yang mempengaruhinya dapat didekati dengan model regresipoisson. Model regresi poisson dapat diduga menggunakan fungsi GLM (generalized linear models) dari program S-PLUS. Faktor-faktor oseanografi yang berpengaruh terhadap jumlah makrobenthos adalah salinitas, kecerahan, kecepatan arus, DO dan suhu.Kata kunci : peluang poisson, variabel cacah, makrobenthosThe poisson probability provides the standard models for count variable. As an example, the number of makrobenthos and oceanograpy factors could be approach a poisson regression model. The poissonregression can be fitted using the function GLM, which fits Generailized Linear Models in S-PLUS program. Oceanography factors as having an effect on the number of makrobenthos are salinity, kecerahan, kecepatanarus,DO dan suhu.Key words : poisson probability, count variable, makrobenthos

oai:ojs.ejournal.undip.ac.id:article/45630 2022-04-06T18:18:33Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/45630 2022-04-06T18:18:33Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 1 (2004): Jurnal Ilmu Kelautan; 14-19 Wirasatriya, Anindya; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Suprijanto, Jusup; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/45630 Perkembangan awal larva; salinitas; Pinctada fucata id Salah satu bagian dari usaha pembenihan adalah pemijahan, dimana salinitas merupakan faktor yang sangat penting terutama pada proses fertilisasi dan perkembangan awal larva sampai fase D-type. Penelitian ini bertujuan untuk mengetahui pengaruh salinitas terhadap perkembangan awal larva tiram mutiara (Pinctada fucata). Terdapat 4 perlakuan salinitas pada penelitian ini sebagai media perkembangan awal larva tiram mutiara, yaitu 27 ‰, 30 ‰, 33 ‰, dan 36 ‰• Hasil penelitian menunjukkan bahwa ternyata perbedaan salinitas sangat mempengaruhi perkembangan awal larva P. fucata baik dari segi waktu pembentukan D type maupun kenormalan bentuk larva yang dihasilkan. Salinitas media mempengaruhi tingkat kerja osmotik larva dan proses pembentukan cangkang. Salinitas optimum untuk perkembangan awal larva tiram mutiara (P. fucata) adalah 33 ‰ dimana waktu perkembangan awal larvanya berlangsung dalam waktu yang paling singkat yaitu 1053,33 menit dan tidak terjadi ketidaknormalan bentuk larva. Akibat terjadi peristiwa plasmolisis dan plasmolisis, pada salinitas 27 dan 36 terjadi ketidaknormalan bentuk larva yang dihasilkan.

oai:ojs.ejournal.undip.ac.id:article/519 2020-10-25T22:34:29Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/519 2020-10-25T22:34:29Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 1 (2008): Jurnal Ilmu Kelautan; 13-18 Hartoko, Agus Wirasatria, Anindya Helmi, Muhammad Rochaddi, Bhaskoro 2010-11-11 16:17:24 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/519 id Beberapa fenomena alam di kawasan pesisir dan kemudian menjadi bencana alam yang terjadi dalam kehidupan sehari hari diantaranya banjir, rob, longsor, gunung meletus, tsunami dan yang terjadi di Kota Semarang khususnya, adalah penurunan tanah (land-subsidence). Penelitian diiakukan dengan melakukan pengukuran perubahan ketinggian tanah berdasarkan 60 Titik Tinggi Geodesi (TTG-Bakosurtanal) maupun Bench Mark (BM) yang ada dikota Semarang dan data posisi koordinat masing-masing dengan GPS (Global Positioning System). Data geodetik yang diperoleh di transformasi menjadi data numerik, dan proses analisa geo-statistik diiakukan dengan metoda Kriging memakai perangkat lunak ER_Mapper 6.4 (Licensed user) dan Arc_GIS. Di samping data hasil pengukuran dilapangan, digunakan juga data Spaceshuttle Radar for Terrain Model (SRTM) untuk membentuk citra kontur 3 dimensi, juga menggunakan data citra Landsat_ETM. Berdasarkan data pengukuran yang diiakukan di lapangan dan rangkaian analisis spasial maka dapat dibuat plot laju penurunan tanah dan diketahui bahwa laju penurunan tanah Kota Semarang berkisar antara 1-9 cm/tahun, sehingga memerlukan pemetaan ulang, evaluasi tata ruang dan peraturan daerahKata kunci: penurunan tanah, kawasan pesisir, geo-statistik

oai:ojs.ejournal.undip.ac.id:article/9614 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9614 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 2 (2015): Ilmu Kelautan; 87-100 Horhoruw, Selfrida Missmar; Departemen Ilmu dan Teknolologi Kelautan Fakultas Perikanan dan Ilmu Kelautan Institut Pertanian Bogor Atmadipoera, Agus Saleh; Departemen Ilmu dan Teknolologi Kelautan Fakultas Perikanan dan Ilmu Kelautan Institut Pertanian Bogor Purba, Mulia; Departemen Ilmu dan Teknolologi Kelautan Fakultas Perikanan dan Ilmu Kelautan Institut Pertanian Bogo Purwandana, Adi; Pusat penelitian oseanografi-LIPI 2015-06-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9614 id Selat Makassar (SM) merupakan pintu masuk utama Arus Lintas Indonesia (Arlindo) membawa transport Arlindo sekitar 75% dari total 15 Sv.  Pengukuran mooring arus di Kanal Labani telah dilakukan sejak tahun 1996, namun pengukuran hidrografi yang mencakup seluruh kawasan SM jarang dilakukan. Kontur selat yang berupa kanal dengan keragaman batimetri sangat mempengaruhi karakteristik massa air yang bergerak di dalamnya sehingga diperlukan penelitian mencakup seluruh kawasan SM. Tujuan penelitian ini adalah mengkaji variasi spasial dan struktur arus dan massa air Arlindo di kawasan SM dari hasil ekspedisi EWIN Juni 2013. Data hidrografi yang digunakan terdiri dari 29 casts CTD yang tersebar di kawasan SM dan data arus di kedalaman 0-125 m dari shipboard ADCP sepanjang lintasan survei. Hasil penelitian menunjukkan Arlindo Makassar dicirikan arus jet kuat intensif di kedalaman termoklin (75-125 m), dimana pola alirannya mengarah ke selatan sampai barat daya di pintu masuk utara SM. Arus ini berlanjut sampai mendekati lintang 2°LS, yang selanjutnya arah alirannya berubah ke tenggara menyusuri lereng dangkalan Kalimantan yang mengarah ke Kanal Labani.  Arus jet berubah ke arah selatan sampai tenggara di kanal ini dan menjadi lebih kuat. Sirkulasi di sisi tepi barat laut SM terbentuk pusaran arus searah jarum jam. Stratifikasi massa air Arlindo Makassar didominasi massa air Pasifik Utara, yaitu North Pacific Subtropical Water (NPSW) di kedalaman termoklin dan North Pacific Intermediate Water (NPIW) di bawah termoklin. Terdapat variasi spasial massa air NPSW dan NPIW, dimana semakin kearah selatan nilai salinitas maksimum (minimum) NPSW (NPIW) semakin berkurang sekitar 0.03 psu. Ketebalan lapisan termoklin sisi timur selat lebih besar sehingga distribusi vertikal massa air Pasifik Utara tersebut cenderung lebih kuat di sisi timur sehingga ditemukan intensifikasi Arlindo ke arah barat Selat Makassar.

oai:ojs.ejournal.undip.ac.id:article/63337 2025-06-25T07:35:55Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/63337 2025-06-25T07:35:55Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 2 (2025): Ilmu Kelautan; 221-236 Afdal, Afdal; Research Center for Oceanography, National Research and Innovation Agency Bengen, Dietriech G.; Department of Marine Science and Technology, IPB University Wahyudi, A’an Johan; Research Center for Oceanography, National Research and Innovation Agency Rastina, Rastina; Department of Marine Science and Technology, IPB University Purwiyanto, Anna Ida Sunaryo; Marine Science Department, Faculty of Mathematics and Natural Science, Sriwijaya University Prayitno, Hanif Budi; Research Center for Oceanography, National Research and Innovation Agency Water Studies, School of Chemistry, Monash University||Malaysia Hamzah, Faisal; Research Center for Oceanography, National Research and Innovation Agency Suteja, Yulianto; Marine Science Department, Faculty of Marine and Fisheries, Udayana University Adi, Novi Susetyo; Directorate of Coastal Area and Small Islands Utilization, Ministry of Marine Affairs and Fisheries Republic of Indonesia Koropitan, Alan F.; Department of Marine Science and Technology, IPB University Jakarta Technical University of Fisheries (Politeknik Ahli Usaha Perikanan), Ministry of Marine Affairs and Fisheries Republic of Indonesia 2025-06-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/63337 CO2; ocean acidification; pH; aragonite saturation; Pari Island; Sire Bay en The increase in anthropogenic CO2 emissions has induced significant physical and biogeochemical alterations in oceans worldwide, including warming, acidification, and oxygen depletion. Coastal areas are particularly vulnerable due to intensified human activities and terrestrial influences, resulting in increased coastal ocean acidification driven by atmospheric CO2 absorption and regional biological and anthropogenic processes. However, research on the collective impact of land-sea interaction and air-sea CO2 exchange on coastal ocean acidification in severely disturbed areas, such as the small islands of Lombok and Pari in Indonesia, remains limited. This study aims to investigate the daily fluctuations in marine carbonate systems and aragonite saturation (Ωarag) levels in the vicinity of seagrass and coral reef habitats in Pari Island and Sire Bay, Lombok. Seawater samples were collected from Sire Bay, Lombok, and the coastal waters of Pari Island to analyze the carbonate systems, CO₂ flux, and metabolic processes. The findings indicate that Pari Island's coastal waters are more susceptible to ocean acidification than Sire Bay, Lombok, showing significantly lower pH values and Ωarag (P&lt;0.05), ranging from 7.60 to 8.00 and 1.04 to 2.54, respectively. This disparity arises from the decreased temperature and salinity in Pari Island's coastal waters during the northwest monsoon, coupled with the deteriorated state of the seagrass and coral reef ecosystems, altering the equilibrium of ecosystem productivity and calcification. The study underscores the necessity of adopting specific coastal management tactics to lessen the effects on fragile ecosystems, highlighting the urgency for additional studies to evaluate adaptive and conservation strategies to preserve coastal biodiversity and ecosystem services.

oai:ojs.ejournal.undip.ac.id:article/2223 2012-03-06T11:08:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2223 2012-03-06T11:08:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 3 (2006): Jurnal Ilmu Kelautan; 171-180 Khouw, Abraham Samuel; Faculty of Fisheries and Marine Sciences, Pattimura University, Ambon – Indonesia, Phone: 0911-351727, HP: 081343044295, E-mail: askhouw@web.de Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2223 en Pengujian terhadap dimensi tubuh dari limpet C. testudinaria mengindikasikan bahwa sampel yang dikoleksi dari tiga tingkatan zona pantai adalah berbeda nyata dalam panjang, lebar, tinggi, jarak antara puncak cangkang dari anterior, dan jarak antara puncak cangkang dari posterior. Keseluruhan hubungan antara panjang cangkang terhadap dimensi tubuh lainnya adalah alometrik negatif. Hubungan antara panjang cangkang dengan jarak apex-anterior dan apex-posterior mengindikasikan bahwa bentuk cangkang untuk limpet berukuran panjang 18 mm yang hidup pada zona bawah cenderung agak ke belakang sedangkan ukuran yang lebih besar cenderung agak ke depan. Studi morfometri pada rasio panjang cangkang terhadap lebar dan tinggi cangkang serta rasio keliling terhadap volume cangkang menunjukkan hasil yang sama dengan analisa pada dimensi tubuh yang mengindikasikan bahwa limpet yang menempati zona bawah adalah lebih lebar, tinggi dan lebih lancip dari limpet yang menempati zona atas dan tengah dari pantai.Kata kunci: Limpet, Cellana testudinaria, dimensi tubuh, zona pantai, allometri.An examination of the body dimensions of C. testudinaria indicated that specimens collected from the three different shore levels were significantly different in shell length (L), width (B), height (H), distance from apexto anterior margin (AA), and distance from apex to posterior margin (AP). The overall relationships between body dimensions and shell length were negatively allometric. The relationships of shell length to AA and APindicated that the apex of limpets living at the low shore level are shifted backward in individuals less than 18 mm in shell length, while it is shifted forward in larger limpets. Morphometric studies on the ratio of shelllength to shell width and shell height and the ratio of shell circumference to volume provided similar results as the analyses of the body dimensions, indicating that limpets inhabiting the low shore level were broader and taller and had more acute, backward shifted apex than those living at the high and middle shore levels.Key words: Limpet, Cellana testudinaria, body dimensions, shore levels, allometric.

oai:ojs.ejournal.undip.ac.id:article/17062 2021-10-13T03:32:07Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/17062 2021-10-13T03:32:07Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 1 (2019): Ilmu Kelautan; 1-6 Rasyid, Abdullah; Research Center for Oceanography, Indonesian Institute of Sciences Ardiansyah, Ardi; Research Center for Oceanography, Indonesian Institute of Sciences Pangestuti, Ratih; Research Center for Oceanography, Indonesian Institute of Sciences 2019-02-28 21:06:20 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/17062 Barru waters; nutrition; healthy food; red seaweed Indonesian Institute of Sciences en The nutrient composition of dried red seaweed Gracilaria gracilis collected from Barru waters, South Sulawesi including proximate, dietary fiber, minerals, fatty acid and amino acid profile has been investigated. The objective of this study was to evaluate the various nutritional parameters of G. gracilis for utilization in human nutrition. Results show that the content of moisture (19.045), protein (10.86%), ash (6.78%), fat (0.18%), carbohydrate (63.13%) and dietary fiber (27.48%) basis on the dry weight. The content of calcium (429.11 mg.100 g-1), sodium (290.89 mg.100 g-1), phosphor (57.01 mg.100 g-1), iron (15.20 mg.100 g-1) and potassium (1380.42 mg.100 g-1). Leucine was the major essential amino acid found to be 9374.22 mg.kg-1, while glutamic acid was the major non-essential amino acid found to be 10848.98 mg.kg-1. Palmitic acid was the major saturated fatty acid found to be 0.08%, while oleic acid was the major unsaturated fatty acid found to be 0.05%. The nutrient composition of G. gracilis was discussed in this study and suggested that the seaweed species have potentially be used as raw material or ingredient of a healthy food for human.

oai:ojs.ejournal.undip.ac.id:article/2417 2020-04-17T05:55:54Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2417 2020-04-17T05:55:54Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 1 (2012): Ilmu Kelautan; 39-48 Purwaningsih, Sri; Departemen Teknologi Hasil Perairan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor, Bogor 16680. Jln. Lingkar Kampus IPB Dramaga-Bogor Tlp./Fax. (0251) 8622915/(0251) 8622916, sripurwa65@yahoo.com; sripurwa65@gmail.com Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2417 en Beberapa komponen antioksidan dihasilkan oleh bahan pangan secara alamiah termasuk bahan dari hasil perairan. Keong Matah Merah (Cerithidea obtusa) merupakan komoditas perikanan yang biasa dikonsumsi masyarakat dan diyakini bisa digunakan sebagai obat. Tujuan penelitian ini adalah untuk menganalisis aktivitasantioksidan dan komposisi kimia dari Keong Matah Merah. Komposisi kimia Keong Matah Merah dianalisis dengan metode AOAC untuk kandungan proksimat, kandungan mineral dengan metode APHA, kandungan asam amino dengan metode AOAC . Penentuan aktivitas antioksidan dilakukan dengan metode Molyneux. Hasil penelitian menunjukkan bahwa Keong Matah Merah (Cerithidea obtusa) mempunyai kadar: air 77,5%, protein 13,8%, lemak 2,8%, dan abu 4,5%, makro mineral tertinggi natrium 283,45 mg/100 g dan terendah kalsium39,78 mg/100 g, kadar mikro mineral tertinggi selenium 39,25 mg/100 g dan terendah tembaga 0,29 mg/100 g. Kandungan asam amino esensial tertinggi isoleusin 4,82 % dan terendah arginin 0,95%, kandungan asam amino non-esensial tertinggi asam glutamat 12,08% dan terendah sistein 0,84%. Ekstrak metanol pada Keong Matah Merah mempunyai aktivitas sebagai antioksidan kuat dan mempunyai nilai IC50 58,19 ppm dengan pembanding vitamin C sebesar 3,55 ppm.Kata kunci: Keong Matah Merah, Cerithidea obtusa, gizi, antioksidanAntioxidant compounds are frequently produced by natural foods. Matah Merah Snail (Cerithidea obtusa) is one of fishery commodities which is commonly consumed by society and traditionally used for therapeutic purposes. The aim of this research was to investigate the nutrient composition and antioxidant activity of Matah Merah (C. obtusa). The nutrient compounds were analyzed using proximate contents according to AOAC method, mineral contents using APHA method, and amino acid contents using AOAC method. The results showed that Matah Merah Snail (Cerithidea obtusa) contained 77.5% of moisture, 13.8% of protein, 2.8% of fat, and 4.5% of ash. Analyses of macro- and micro-minerals revealed that the highest level of macro-minerals was sodium 283.45 mg/100 g and the lowest one was calcium 39.78 mg/100 g. The highest level of micro-minerals was selenium 39.25 mg/100 g and the lowest one was copper 0.29 mg/100 g. The highest content of essential amino acidswas isoleusin 4.82% and the lowest one was arginine 0.95%. The highest content of non-essential amino acids was glutamic acid 12.08% and the lowest one was cysteine 0.84%. Methanol extract of Matah Merah Snail (C.obtusa) displayed potential antioxidant activities with IC50 value of 58,19 ppm, with IC50 of vitamin C as positive control was 3,555 ppm.Key words: Matah Merah Snail, Cerithidea obtusa, nutrition , antioxida

oai:ojs.ejournal.undip.ac.id:article/49429 2023-05-21T03:05:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/49429 2023-05-21T03:05:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 1 (2023): Ilmu Kelautan; 12-26 Apriansyah, Apriansyah; Graduate School in Marine Sciences, IPB University Marine Science Department, Faculty of Mathematic and Natural Sciences, Tanjungpura University Atmadipoera, Agus S.; Department of Marine Science and technology, IPB University Jaya, Indra; Department of Marine Science and technology, IPB University Nugroho, Dwiyoga; Oceanographic Research Center, National research and Innovation Agency Akhir, Mohd. Fadzil; Institute of Oceanography and Environment, Universiti Malaysia Terengganu 2023-03-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/49429 evaluation; satellite; reanalysis; southern sunda shelf; CROCO modelling system en The Coastal and Regional Ocean Community Model (CROCO) was applied to simulate the three dimensional ocean circulation on the southern Sunda Shelf with a horizontal resolution of 1/18o and 40 vertical layers. This configuration is called as CROCO18-SSS. The initial and open boundary conditions were derived from a global reanalysis product at a resolution of 1/12o from the Copernicus Marine Environment Monitoring Service (CMEMS). The regional model was driven by atmospheric, tides, and river discharges data from a wide variety of datasets, each with a different resolution. To test the model performance and capabilities of the CROCO18-SSS model outputs including sea level anomaly, current velocity, temperature, salinity, and volume transport, we have compared in the simulation results with other reanalysis product and satellite-derived datasets. The CROCO18-SSS model outputs reproduced the regional ocean circulation well from observations and reanalysis products. For example, the reversal of the monsoonal current in the southern sunda shelf, as well as strong persistent southward Makassar throughflow and their interaction in the southern Makassar Strait, can be seen clearly. The vertical structure of the zonal current component was comparable to that of the reanalysis product reference. The seasonal shift in temperature and salinity, with the water becoming colder and saltier during the northwest monsoon and warmer and fresher during the southeast monsoon, was also accurately reproduced by the  CROCO18-SSS model.  Additionally, the mean volume transport calculated by the CROCO18-SSS model for the Makassar and Karimata Straits was comparable to that reported in previous studies.

oai:ojs.ejournal.undip.ac.id:article/582 2020-10-25T22:47:05Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/582 2020-10-25T22:47:05Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 4 (2008): Jurnal Ilmu Kelautan; 233-240 Nurdiana, Dian Ridwan Limantara, Leenawati Susanto, A. B. 2010-11-18 07:00:31 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/582 id Rumput laut merupakan salah satu kekayaan hayati laut Indonesia, yang belum dimanfaatkan secara optimal terutama dari jen is rumput laut coklat. Kandungan pigmen pada rumput laut sangat dipengaruhi oleh Faktor lingkungan tempat tumbuhnya. Perbedaan kedalaman menyebabkan intensitas cahaya matahari bervariasi pada setiap zona perairan sehingga menyebabkan perbedaan pada komposisi dan kestabilan pigmen pada tumbuhan laut tersebut. Penelitian komposisi dan fbtostabilitas pigmen pada Hauck dilakukan untuk mengetahui peran cahaya da/am mempengaruhi komposisi dan stabilitas pigmen dari kedalaman yang berbeda. Berdasarkan hasil analisa KCKT dan spektrofotometer Varian Cary 50 menunjukkan perbedaan kandungan pigmen pada perbedaan kedalaman. Pada kedalaman 3 m didominasi oleh klorofil a 36,13%, klorofilid a 22,54% dan total fukoxantin 31,97%; sedangkan pada kedalaman 6 m diperoieh klorofil a 34,78%, klorofilid a 20,26% dan total fukoxantin 27,79%. Perbedaan kandungan pigmen merupakan respon adaptasi terhadap lingkungan. Sedangkan fbtostabilitas pigmen pada kedalaman 6 m lebih tahan terhadap perlakuan cahaya UV-C dan sinarpolikromatik dibandingkan pada kedalaman 3 m. Hal ini berkaitan dengan mekanisme fotoproteksi karotenoid, terhadap klorofil.Kata kunci: Fotostabilitas, Fukoxantin, Kloroffl, Rumput laut

oai:ojs.ejournal.undip.ac.id:article/10245 2020-04-17T06:03:42Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/10245 2020-04-17T06:03:42Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 3 (2016): Ilmu Kelautan; 101-106 Jatmiko, Irwan; Research Institute for Tuna Fisheries Setyadji, Bram; Research Institute for Tuna Fisheries Ekawaty, Rani; Udayana University 2016-08-30 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/10245 Research Institute for Tuna Fisheries en Tuna is one of the important export commodities to increase government income. One of economically important tuna species is bigeye tuna (Thunnus obesus) which has a proportion of 21% of the total production of large tuna group. The objective of this study was to investigate the effects of different moon phase on the catch of bigeye tuna (T. obesus) in Eastern Indian Ocean. Data collection was conducted by the scientific observers from August 2005 to June 2014 in the tuna longline vessels were based in the port of Benoa, Bali. Moon phase data were collected from August 2005 to June 2014 from National Aeronautics and Space Administration (NASA). Catch data were calculated using the catch rate formula which defined as the number of catches per 100 hooks. The number of catch rate then was sorted into each moon phases and were analyzed using one-way Anova. This study covered 62 trips and 1,480 numbers of operations or sets was conducted from sampled vessels. The result showed that the average catch rate of bigeye tuna differed significantly among the moon phases. Tukey post-hoc tests showed that the average catch rate at full moon was the highest among the groups with around 0.3/100 hooks. This study showed that moon phase had significant effect on the catch of bigeye tuna (T. obesus) that increased the catch during full moon. Keywords: moon phase, catch rate, Eastern Indian Ocea, tuna, Thunnus obesus

oai:ojs.ejournal.undip.ac.id:article/76999 2026-02-27T19:11:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/76999 2026-02-27T19:11:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 1 (2026): Ilmu Kelautan; 8-14 Zeghdoudi, Essaid; Department of Ecology and Environment, Faculty of Nature, Life and Earth Sciences, University of Djillali Bounaama-Khemis Miliana Fisheries Laboratory, Faculty of Biological Sciences, University of Science Technology Houari Boumedienne Nouar, Ahmed; Fisheries Laboratory, Faculty of Biological Sciences, University of Science Technology Houari Boumedienne Cheurfa, Mohammed; Department of Biology, Faculty of Nature, Life and Earth Sciences, University of Djillali Bounaama-Khemis Miliana Noun, Chaimaa; Department of Biology, Faculty of Nature, Life and Earth Sciences, University of Djillali Bounaama-Khemis Miliana Mohammadi, Imane Kouider; Department of Biology, Faculty of Nature, Life and Earth Sciences, University of Djillali Bounaama-Khemis Miliana Putri, Wahyu Aristyaning; Department of Tropical Biology, Universitas Gadjah Mada Domingues, Valentina Fernandes; REQUIMTE/LAQV, ISEP, Polytechnic of Porto 2026-03-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/76999 Shrimp shell waste; Parapenaeus longirostris; Aristeus antennatus; bioactive compounds; antidiabetic activity; anti-inflammatory property en The valorization of marine by-products represents a promising approach for discovering novel bioactive compounds. This study presents a comparative phytochemical and bioactivity assessment of shrimp shell waste extracts from Parapenaeus longirostris and Aristeus antennatus species, which are prevalent on Algerian coasts. The objective of this study is to evaluate their potential as a source of biologically active compounds, with a particular focus on those compounds that possess anti-inflammatory and antidiabetic properties. The methodology entailed the extraction of chemical compounds. The subsequent procedure involved the utilization of shrimp residues, which were then subjected to a comprehensive compositional analysis. This analysis was then followed by an evaluation of their biological activity. The results obtained demonstrated the presence of biologically effective compounds, with the extracts exhibiting notable anti-inflammatory and antidiabetic activity. White shrimp (P. longirostris) was found to be particularly efficacious in both activities, showing particular promise in diabetes-related inhibition. This finding indicates the potential of valorization. It is evident that these marine by-products have the potential to serve as a promising natural resource for the development of value-added products. It is evident that these initiatives facilitate novel advancements in the domains of health and industry, thus underpinning the blue economy within the paradigm of sustainable development.

oai:ojs.ejournal.undip.ac.id:article/2263 2012-02-28T21:37:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2263 2012-02-28T21:37:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 4 (2005): Jurnal Ilmu Kelautan; 205-212 Saputra, Suradi W; Program Studi Manajemen Sumberdaya Perairan, FPIK, Universitas Diponegoro, Semarang, Indonesia, HP : 628156503017 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2263 en Penelitian ini bertujuan untuk mengkaji produksi maksimum berkelanjutan udang jari (Metapenaeus elegans) di Laguna Segara Anakan, Cilacap, Jawa Tengah. Pengambilan sampel dilakukan sejak Februari sampai dengan Desember 2004, menggunakan metode sistematik random sampling. Data frekuensi panjang karapas diperolehdari hasil tangkapan tiga unit apong pada sembilan stasiun pengamatan. Produksi udang jari dan jumlah trip diperoleh dengan pencatatan langsung terhadap 20% dari populasi apong. Hasil penelitian menunjukkan bahwa jumlah pesintas (survivor) udang jari selama tahun 2004 yang mencapai panjang karapas 3,5 mm sebanyak 196.554.781 ekor, menghasilkan produksi 168 ton, dengan nilai produksi Rp.1.726.744.150,00. Hasil analisis Thompson dan Bell diperoleh produksi maksimum berkelanjutan secara biologi (MSY) sebesar240 ton/tahun, dengan upaya optimum (fMSY) sebesar 61.842 trip apong/tahun. Produksi maksimum berkelanjutan secara ekonomi (MSE) sebesar 234 ton/tahun dengan nilai Rp.2.740.275.054,00, dengan upaya optimum (fMSE) sebesar 50.368 trip apong/tahun.Kata kunci: M.elegans, produksi maksimum berkelanjutan, Laguna Segara Anakan.This research aimed is to study the maximum sustainable yield of the Fine Shrimp (Metapenaeus elegans) in Segara Anakan Lagoon, Cilacap, Central Java. Field activities were conducted from February to December2004 employing sistematic random sampling. The carapace length frequency data were obtained from catches of three unit apongs on nine stations. Catches of Fine Shrimp and trips of apong were observed andmeasured from 20% of apong population. The results showed that the survivor of fine shrimp during 2004 with carapace length of 3,5 mm was 196,554,700 individuals and produced 168 tons, valued at calculatedRp.1,726,744,150.00. Thompson and Bell model was applied showing that biological maximum sustainable (MSY) is 240 ton/year, with optimum effort (f MSY) of 61,842 &ldquo;apong&rdquo; trip/year. Maximum sustainable yield ofeconomic (MSE) calculated to be 234 ton/year, valued at&nbsp; p.2,740,275,054.00, and optimum effort (fMSE) of 50,368 trip/year.Key words: M. elegans, Maximum sustainable yield, Segara Anakan Lagoon.

oai:ojs.ejournal.undip.ac.id:article/28649 2021-10-13T01:00:31Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/28649 2021-10-13T01:00:31Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 2 (2020): Ilmu Kelautan; 66-74 Mujiyanto, Mujiyanto; Research Institute for Fisheries Enhancement Garcia, Mheda G.; Ecosystems Research and Development Bureau Haryadi, Joni; Research Institute for Fisheries Enhancement Rahayu, Risnawati; Government of Marine and Fisheries Services Banten Budikusuma, R. Arif; Government of Marine and Fisheries Services Banten 2020-05-27 21:49:13 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/28649 percentage cover; habitats; coral reef; Tunda island en Coral reef is an important underwater ecosystem supporting people’s lives in coastal areas. One of the communities depending on the coral reef ecosystem for its food, livelihood, shoreline protection, and recreation needs is a community in Tunda Island. This research aims to analyze and determine the health status of coral reef in the island using a survey method. It was conducted in July 2018 and July 2019. Underwater photography transects were established at two depth areas of ± 3-4 m (shallow water) and ± 10-11 m (reef slope). Analysis of the results of live coral cover was divided into eight categories of groups based on CPCe output series 4.1. The values of coral reef cover at first depth (± 3-4 m) were 64.86% (east side of the island), 55.76% (north toward east side), and 32.22% (west side). The values of coral reef cover at second depth (± 10-11 m) were 36.36%, 25.00%, and 23.63% on the north toward east, east, and central north sides of the island, respectively. In shallow waters of Tunda Island, the coral reef health is classified as moderate to good, mostly those located on the east and the north toward the east sides. At reef slope, the coral reef health is classified as damaged to poor, particularly those located on the south and the south toward the west sides. The difference in the health values implies that most corals occur in shallow waters while deep corals differ from those near the surface and are not safe from impacts of the activities in the coastal area of Tunda Island.

oai:ojs.ejournal.undip.ac.id:article/7065 2017-08-19T22:44:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7065 2017-08-19T22:44:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 2 (2013): Ilmu Kelautan; 91-96 Suryono, Chrisna Adi; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Jl. Prof. Dr. Soedarto, Tembalang, Semarang, Indonesia. 50275 Rochaddi, Baskoro; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Jl. Prof. Dr. Soedarto, Tembalang, Semarang, Indonesia. 50275 2013-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7065 en Perkembangan aktivitas di wilayah pesisir menimbulkan terjadinya peningkatan polutan di lingkungan sekitarnya. Salah satu jenis polutan yang sering ditemukan adalah logam berat yang berbahaya. Penelitian ini menginvestigasi keterkaitan antara logam berat dalam air tanah dan logam berat yang ada pada sedimen laut dan air laut. Secara khusus, penelitian ini melihat enam logam berat yakni As, Hg, Cr, Pb, Cu dan Fe. Pengukuran kandungan logam dilakukan dengan AAS (Atomic Absorption Spectophotometry). Konsentrasi logam berat telah ditemukan dalam sedimen laut, air tanah dan air laut di daerah pesisir Tugu Semarang. Secara nyata terlihat bahwa seluruh logam menurun konsentrasinya dari sedimen, air laut dan air tanah, dan konsentrasi tertinggi terdapat dalam sedimen laut dan terendah terdapat pada air tanah. Konektivitas logam berat dalam sedimen, air laut dan air tanah diakibatkan oleh perubahan pH dan salinitas pada sedimen dan air. Peningkatan aktivitas reklamasi, buangan air limbah baik dari industri maupun pemukiman kemungkinan menyebabkan peningkatan logam berat di wilayah pesisir Tugu Semarang. Hasil penelitian ini menegaskan adanya konektivitas kandungan logam berat dalam air tanah, sedimen dan air laut di wilayah pesisir kota Semarang. Kata kunci: logam berat, sedimen, air laut, air tanah, Semarang Rapid development in coastal areas has lead to an increase in pollutants in the surrounding environment. One of the types of pollutants that are commonly found heavy metals. This study investigates the connectivity of heavy metals in ground water and heavy metals that exist in marine sediments and seawater. Six metals (As, Hg, Cr, Pb, Cu and Fe) in coastal areas in Tugu Semarang were examined. These metals were found ini marine sediment, groundwater and seawater in coastal areas. There is gradual decreased of the metal concentrations in sediment, seawater and groundwater, and the highest concentration of metals was found in marine sediment and the lowest in coastal groundwater. The connectivity of metals in marine sediment, groundwater and seawater predicted due to changes in pH and salinity of sediment and water. The increasing number of reclamation, waste water disposal from industrial and urban areas may has caused the increasing of heavy metals concentration in the coastal areas. The results of this study confirmed the presence of connectivity of heavy metals in the groundwater, sediment and seawater in the coastal area of ​​Semarang. Keywords: metals, sediment, groundwater, seawater, Semarang

oai:ojs.ejournal.undip.ac.id:article/2293 2012-03-01T08:43:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2293 2012-03-01T08:43:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 2 (2005): Jurnal Ilmu Kelautan; 85-89 Indrayati, Elis; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Kelautan, Universitas Diponegoro, Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2293 en Teluk Ekas merupakan teluk semi tertutup di bagian selatan Pulau Lombok dan berhadapan langsung dengan Samudera Indonesia. Potret ekosistem Teluk Ekas dibangun melalui model trofik Teluk Ekas (1999 &ndash; 2000) dengan menggunakan software Ecopath with Ecosim versi 5.0 Beta. Ekosistem Teluk Ekas (1999-2000) terdiri atas 18 functional group meliputi 7 grup ikan, 6 grup invertebrata, 2 grup produsen primer, lumbalumba, karang dan detritus yang terdistribusi dalam 4 trophic level dengan lumba-lumba sebagai pemangsa tertinggi. Ekosistem Teluk Ekas (1999-2000) masih berada dalam tahap perkembangan dengan rasio produksi / respirasi (Pp/R) adalah 2,034 dan produksi / biomasa (P/B) adalah 5.4 per tahun.Kata kunci : Teluk Ekas, potret ekosistem, Ecopath with EcosimTeluk Ekas is a semi-enclosed bay on the south of Lombok island and is connected to the Indian Ocean..Snapshoot of Ekas Bay (1999 &ndash; 2000) was constructed by Ecopath with Ecosystem 5.0 Beta software. TheEkas Bay ecosystem spans over more than four trophics level and dolphin being the top predator. Thetrophic model consist of 18 functional groups i.e. 7 fish groups, 6 invertebrata groups, 2 primary producers, coral, dolphin and detritus. Result indicates that ratio between total production and total respiration (Pp /R) is 2.034 and ratio between production and biomass (P/B) is 5,4. Result suggests that the Ekas Bay to be on development stage.Key words: Ekas Bay, ecosystem snapshoot, Ecopath with Ecosim

oai:ojs.ejournal.undip.ac.id:article/59904 2024-03-31T21:48:11Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/59904 2024-03-31T21:48:11Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 1 (2024): Ilmu Kelautan; 48-60 Bersaldo, Michael Jeriel Inocentes; College of Science and Mathematics, Mindanao State University-Iligan Institute of Technology Institute of Fisheries and Marine Sciences, Southern Philippines Agri-business and Marine and Aquatic School of Technology Lacuna, Maria Lourdes Dorothy G.; College of Science and Mathematics, Mindanao State University-Iligan Institute of Technology Orbita, Maria Luisa S.; College of Science and Mathematics, Mindanao State University-Iligan Institute of Technology Tampus, Annielyn D.; College of Science and Mathematics, Mindanao State University-Iligan Institute of Technology Avenido, Pedro M.; Institute of Fisheries and Marine Sciences, Southern Philippines Agri-business and Marine and Aquatic School of Technology Macusi, Edison D.; Institute of Agriculture and Life Sciences, Davao Oriental State University 2024-03-27 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/59904 fragments; fiber; fisheries; goat fish; ; plastic ingestion; plastic pollution en Microplastic (MP) study in the Philippines is gaining attention because of the recent trends in macro-microplastic study worldwide and there is already a call for research to help the degrading marine environment in the country. No study in Malita, Davao Occidental was conducted to document microplastic contamination. To address this gap, 30 goat fishes collected in 6 sampling stations were dissected and microplastic were extracted, counted, and characterized. Results revealed that 96.67% of samples were contaminated with microplastic. In terms of microplastic type, fiber was most dominant than fragments, in microplastic hue, color black was the most common and microplastic with size ranging from 50 to 500µm were usually observed. Comparable amount of microplastic was obtained in fish guts across stations (P&gt;0.05) which means that fish ingestion of microplastic were evident in the area. Based on Correlation, the length (r2=0.13), wet weight (r2=0.17) and gut wet weight (r2=0.29) of the fish does not tell the amount of microplastic ingested by each yellow stripped goat fish since there is a weak relationship between the two parameters. The result suggests, Malita’s seawater is already polluted with microplastic and demersal fishes that practice high site fidelity were very susceptible to microplastic ingestion. A stronger solid waste management policy must be implemented and activities such coastal clean ups and information drives must be initiated by all stakeholders. Further, microplastic investigation in seawater and sediments must be conducted to have a more detailed study of the whole extent of microplastic contamination in Malita, Davao Occidental.

oai:ojs.ejournal.undip.ac.id:article/7167 2017-08-19T22:43:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7167 2017-08-19T22:43:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 4 (2013): Ilmu Kelautan; 225-230 Trianto, Agus; Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Kampus Tembalang, Semarang, Indonesia. 50275 Laboratorium Natural Product, UPT Lab Terpadu, Universitas Diponegoro Kampus Tembalang, Semarang,Indonesia. 50275 Nissa, Radisya N; Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Kampus Tembalang, Semarang, Indonesia. 50275 Wijayanti, Diah Permata; Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Kampus Tembalang, Semarang, Indonesia. 50275 Rifai, Azis; Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Kampus Tembalang, Semarang, Indonesia. 50275 Ismunarti, Dwi Haryo; Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Kampus Tembalang, Semarang, Indonesia. 50275 ., Destio; Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Kampus Tembalang, Semarang, Indonesia. 50275 2013-12-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7167 en Spons adalah salah satu sumber bahan hayati laut yang potensial. spons Amphimedon sp. terbukti memiliki potensi sebagai senyawa bioaktif anti kanker. Namun, pemanfaatan spons dari alam akan memberikan dampak yang buruk terhadap lingkungan, khususnya populasi organisme tersebut. Melalui budidaya spons dapat diaplikasikan untuk menyediakan bahan bioaktif dalam jumlah yang cukup secara berkesinambungan. Penelitian ini bertujuan untuk mengetahui laju pertumbuhan dan tingkat kelulushidupan spons Amphimedon sp. yang dibudidayakan melalui transplantasi secara in situ di perairan Pulau Panjang, Jepara, Jawa Tengah. Spons ditransplantasikan pada perairan laut dengan jarak 6 m dan 1 m dari dasar, dengan 2 ukuran awal eksplan (3cm x 3cm x 1,5cm dan 6cm x 6cm x 1,5cm). Laju pertumbuhan dihitung berdasarkan pertambahan volume eksplan. Hasil penelitian menunjukkan bahwa ukuran awal eksplan memberikan pengaruh yang nyata terhadap laju pertumbuhan. Sebaliknya, perbedaan kedalaman tidak memberikan pengaruh yang nyata terhadap laju pertumbuhan spons. Laju pertumbuhan eksplan spons Amphimedon sp berkisar 3,01±1,60 cm3.hari-1 sampai dengan 3,43±1,08 cm3.hari-1. Kelulushidupan eksplan spons mencapai 100%. Hasil ini menegaskan bahwa untuk usaha budidaya spons sebaiknya menggunakan ukuran awal eksplan besar. Disamping itu perairan Pulau Panjang terbukti memiliki perairan yang sesuai untuk budidaya spons. Kata kunci: akuakultur, eksplan, spons, bahan bioaktif  Sponge is known as important marine natural product sources. Sponge Amphimedon sp. has been proven to have anticancer substances. However, direct exploitation of sponge from nature will give a bad impact to the marine environment. Sponge aquaculture can be applied for sufficiently and sustainably supply of bioactive compounds. In order to obtain data on growth and survival rates of transplanted sponge Amphimedon sp. in Panjang Island-Jepara waters, this in situ research was conducted. The sponges were explanted  at 6 m and 1 m above the sea floor with two initial approximate size (3cm x 3cm x 1.5cm and 6cm x 6cm x 1.5cm). The growth rate was indicated by volumetric increment. The results showed that initial explants size gave a significant effect on the growth rates of the sponge. On the other hand, two different depths of culture did not give significant effect. The explant growth rates range from 3.01±1.60 cm3.day-1 to  3.43±1.08 cm3.day-1. Survival rate of the sponge during the experiment was 100%. This result confirms that for the cultivation of sponges should use larger explants initial size. It also suggests that Panjang Island water has proven suitable for sponges cultivation activities. Keywords: aquaculture, explant, sponges, bioactive substance

oai:ojs.ejournal.undip.ac.id:article/62666 2024-12-10T15:14:41Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/62666 2024-12-10T15:14:41Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 3 (2024): Ilmu Kelautan; 359-371 Putra, I Wayan Sumardana Eka; Departement of Marine Science, Post-Graduate School, IPB University Naval Hydro-Oceanography Center (Pushidrosal), Indonesian Navy Naval College of Technology (STTAL), Indonesian Navy Atmadipoera, Agus Saleh; Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University Manik, Henry Munandar; Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University Harsono, Gentio; Faculty of Defence Technology, Republic Indonesia Defence University Naval Hydro-Oceanography Center (Pushidrosal), Indonesian Navy Purwandana, Adi; Research Center for Oceanography, National Research and Innovation Agency Hascaryo, Anom Puji; Naval Hydro-Oceanography Center (Pushidrosal), Indonesian Navy 2024-09-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/62666 Indonesian Seas; internal waves; singlebeam echosounder; jala citra; turbulent water en Indonesian seas have been known as the hotspot for internal waves (IWs) generation sites. The sinking tragedy of the Indonesian Naval Submarine, KRI Nanggala 402 on 21 April 2021 in the northern Bali Sea was highlights the need of detecting, mapping, and characterizing internal waves in Indonesian waters are compulsory mainly in the Indonesian Archipelago Sea Lanes (IASLs). IASLs is a gateway for sea crossings which can be used by civil navigations, intercontinental trade, and foreign military. This study focused on mapping the distribution and characteristics of internal waves qualitatively using EA 600 Single beam Echosounder (SBES) of the Indonesian Naval Vessel, KRI Rigel 933 during The Jala Citra Expedition 2-2022 Banda. The measurements were conducted around the IASLs route in the Bali Waters, Banda Waters and Buru Waters. The results show that the typical high-frequency non-linear internal waves (HFNWs) with an amplitude of less than 10 m were observed intermittently during the expedition, detected mostly in the narrow passages, rough topography and shallowing waters. Typical characteristics of internal solitary waves (ISWs) were also observed with typical amplitudes of ~20 – 65 m. An ISWs extreme events found in this study verified the "turbulent water" that was reported in in the IASLs around the Underwater Seamount (US) Nieuwerkerk waters, in 1925 during the Snellius Expedition. The detection of internal wave events using acoustic equipment, the single beam echosounder is considered effective which can later be used as the guidance for marine activities in the water column.

oai:ojs.ejournal.undip.ac.id:article/1679 2017-08-19T22:48:51Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1679 2017-08-19T22:48:51Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 3 (2010): Ilmu Kelautan; 170-178 Aslamyah, Siti; Jurusan Perikanan, Fakultas Ilmu Kelautan dan Perikanan, Universitas Hasanuddin, Jalan Perintis Kemerdekaan Km 10, Makassar 90245 Telp./faks. +62-0411-586025; HP. 081342765705, e-mail siti_aslamyah_uh@yahoo.co.id Fujaya, Yushinta 2012-02-08 22:43:46 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1679 id Ekstrak bayam mengandung fitoekdisteroid yang dikenal sebagai stimulan molting pada kepiting.&nbsp; Selain melalui injeksi,&nbsp; aplikasi&nbsp; ekstrak&nbsp; bayam&nbsp; melalui&nbsp; pakan&nbsp; buatan&nbsp; juga&nbsp; terbukti&nbsp; mampu&nbsp; mempercepat&nbsp; molting&nbsp; dan pertumbuhan kepiting bakau.&nbsp; Kendala yang dihadapi pakan buatan yang digunakan masih mahal karena berbahan dasar ikan dengan kandungan protein yang tinggi,&nbsp; sehingga perlu diformulasi pakan buatan khusus kepiting yang berkualitas, murah dan ramah lingkungan, serta disukai oleh kepiting.&nbsp; Tujuan dari penelitian ini untuk mengevaluasi pakan buatan berbahan dasar limbah pangan yang diperkaya ekstrak bayam yang dapat memberikan respon molting dan pertumbuhan terbaik pada kepiting, serta efisien di produksi dalam skala besar.&nbsp; Empat pakan buatan dengan berbagai kadar protein (P) dan karbohidrat (K) digunakan pada penelitian ini, yaitu pakan A (46,84% P; 33,33% K), B (41,57% P; 38,29% K), C (35,62% P; 44,32% K), dan D (30,62% P; 49,13% K), sebagai kontrol pakan berbahan dasar non limbah. Selama penelitian, kepiting dipelihara secara individu dalam karamba yang di letakkan di tambak.&nbsp;&nbsp; Hasil penelitian menunjukkan bahwa pakan D dengan kadar protein 30,62% dan karbohidrat 49,13%&nbsp; serta diperkaya dengan ekstrak bayam (700 ng/g kepiting) memberikan hasil terbaik dalam menginduksi molting kepiting bakau.&nbsp; Dapat disimpulkan, pakan buatan yang digunakan&nbsp; sebaiknya mempunyai kadar nutrien yang seimbang dan merupakan campuran berbagai bahan baku pakan agar kandungan nutriennya saling melengkapi. Kata kunci : Ekstrak bayam, kepiting bakau, limbah pangan, molting, pakan buatan&nbsp;Spinach extracts contains phytoecdysteroid, a substance which is well known to stimulante molting in crabs. In addition through injection, artificial feed that contains spinach extract had been proven to accelerate molting and growth on mud crabs. The problem faced in utilizing the artificial feed is related to its expensive cost, since it&rsquo;s mainly produced from fish based materials with a very high protein concentration. Thus, it is essential to formulate a special artificial feed for crabs which have a quality, inexpensive, environmentally friendly, and liked by the crabs. The purpose of this study was to evaluate artificial feed made from food waste enriched with spinach extracts, which can provide the best growth response and molting in crabs, as well as efficient to be produced in large scale. Four artificial diets with different protein levels (P) and carbohydrates (K) used in this study were feed A (P: 46,84%; K: 33,33%), B (P: 41,57%; K: 38,29%), C (P: 35,62%; K: 44,32%) and D (P: 30,62%; K: 49,13%), and as control is feed derived from non-waste materials. During the test, crab was culture individually in cages placed in ponds. The results showed that the feed D with 30,62% of protein and 49,13% of carbohydrates and enriched with spinach extract (700 ng/g crab), gives the best results in inducing molting of mud crabs. In conclusion, artificial feed should consist of a mixture of various raw materials, so that their nutrients can be balanced and complementary. Key words :&nbsp; Spinach extract, mud crab, food waste, molting, artificial feed

oai:ojs.ejournal.undip.ac.id:article/19318 2019-03-26T05:29:35Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19318 2019-03-26T05:29:35Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 1 (2002): Jurnal Ilmu Kelautan; 27-32 Desrina, Desrina; Laboratoriurn Parasit dan Penyakit Ikan, Program Studi Budidaya Perairan. Jurusan Perikanan Fakultas Perikanan dan Kelautan Universitas Diponegoro, Semarang, Indonesia 2008-01-08 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19318 en Informasi sebaran geografis parasit ikan hias laut di Indonesia sangat dibutuhkan untuk membuat peraturan tentang Ialulintas ikan dan penanganan penyakit. Penelitian ini bertujuan untuk mengetahui jenis parasit, prevelensi dan intensitas parasit ikan kepe kepe garis (Chaetodon octofasciatus) dari pantai Jepara, Jawa Tengah. Jumlah ikan yang diperiksa adalah 60 ekor. Ikan diperoleh dari nelayan desa Bandengan, Jepara. Pemeriksaan ikan dilakukan di Laboratorium Pengembangan Wilayah Pantai (LPWP) Fakultas Perikanan. dan Kelautan, Universitas Diponegoro di Jepara, selama Mei - Agustus 200I. lkan diperiksa dalam keadaan seger. Pengamatan ektoparasit dilakukan pada lamella insang, preparet ules lendir tubuh, dan sirip. Pemeriksaan endoparasit ikan dilakukan melalui pengamatan organ-organ dalam yang terlebih dahulu dibedah, dan kemudian diletakkan dalam petridish yang berisi air laut. Gejala klinis yang terlihat dicatat dan parasit yang ditemui diidentifikasi pada waktu segar dan setelah diawetkan. Prevalensi dan intensitas parasit juga dihitung. Parasit yang ditemukan terdiri atas tiga spesies ektoperasit yaitu Cryptocaryon irritans, Ergasilus, dan Actinocleidus sp.. Endoparasit yang ditemukan adalah Lecithocirium neopacificum dan Ichthyophonus hoferi. Prevalensi infestasi secara umum termasuk tinggi yaitu 78% akan tetapi prevalensi setiap spesies rendah sampai sedang , berkisar 6,67-40% dan intensitas parasit rendah yaitu 0,92- 25,32 individu. Kata kunci: parasit, ikan Kepe-Kepe. jepara  Data of geographical distribution of parasites of marine ornamentel fish in lndonesia is needed to construct regulation offish transportation. The purposes of this study were to determine parasites, prevalence and intensity of parasites of emperor butterfly fish (Chaetodon octofasciatus) from Jepara Coast. A total of 60 fresh fish were examined from May to August 2001. Fish were obtained from fishermen at Bandengan village Jepara and examined at the Coastal Development Laboratory (LPWP). Jepara. Ectoparasitic examination was carried out by examining gill lamellae, smear from the skin and fins. Fish was then necropsied. Each organ was placed in a petridish containing sea water and sliced. Parasites found were examined using a compound microscope. Any clinical signs was also noted. Parasites were identified alive as well as the preserved one. Prevalence and intensity of parasites were calculated. Parasites found consisted of three species of ectoparasites namely Cryptocaryon irritans, Ergasilus sp. and Actinocleidus sp. Endoparasites found were Lecithocirium neopacificum and Ichthyophonus hoferi, 78% of fish examined were infected which was relatively high. However, prevalence of each parasite species was ranged from low to moderate (6.67-40%) and intensity were fairly low (0 92-25.32 individu).Keywords: parasite, emperor butterfly fish, Jepara

oai:ojs.ejournal.undip.ac.id:article/2335 2012-03-03T05:38:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2335 2012-03-03T05:38:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 4 (2004): Jurnal Ilmu Kelautan; 180-185 Subagiyo, Subagiyo; Laboratorium Eksplorasi dan Bioteknologi Kelautan, Jurusan Ilmu Kelautan, FPIK, Universitas Diponegoro, Semarang, Indonesia Setyati, Wilis A; Laboratorium Eksplorasi dan Bioteknologi Kelautan, Jurusan Ilmu Kelautan, FPIK, Universitas Diponegoro, Semarang, Indonesia Ridlo, Ali; Laboratorium Eksplorasi dan Bioteknologi Kelautan, Jurusan Ilmu Kelautan, FPIK, Universitas Diponegoro, Semarang, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2335 en Benalu adalah tumbuhan epifit parasit yang hidup menempel dan menghisap makanan dari tumbuhan inangnya. Selama proses penyerapan makanan ini akan ikut pula semua senyawa yang dibentuk oleh mangrove sebagai alat pertahanan diri, maka tumbuhan benalu yang hidup pada tumbuhan mangrove juga mempunyai kemampuan khusus untuk beradaptasi terhadap senyawa-senyawa yang dibentuk oleh tumbuhan mangrove. Sehingga dimungkinkan untuk ditemukannya jenis-jenis senyawa baru yang mempunyai potensi anti fungi. Senyawa-senyawa aktif ini kemudian dapat dikembangkan lebih lanjut dalam rangka pengendalian penyakit baik bagi manusia maupun dalam bidang budidaya perikanan, peternakan maupun pertanian. Penelitian dilakukan dengan metode experimental. Ekstrak kasar diperoleh dengan metode masrasi menggunakan methanol sebagai pelarutnya. Sedangkan fraksinasi dilakukan dengan metode kromatografi kolom menggunakan methanol-chloroform (20:1) sebagai eluennya. Aktivitas antifungal diuji dengan metode paper disk. Ada 5 variasi konsentrasi fraksi yang diuji yaitu 50 ug/disk, 10 ug/disk, 5 ug/disk, 1 ug/disk dan 0,5 ug/disk. Hasil studi parasit-host menunjukan bahwa dilokasi penelitian (kawasan mangrove Teluk Awur-Jepara) C. filiformis terdapat sebagai parasit pada tumbuhan mangrove Lumnitzera sp dan Excoecoria aggaloca. Sedangkan hasil uji aktivitas antijamur menunjukan bahwa semua fraksi menunjukanaktivitas antijamur terhadap jamur Trichoderma hanya pada pengamatan 24 jam pertama. Aktivitas anti jamur terhadap Fusarium ditunjukan oleh semua fraksi, dan aktivitas terhadap Aspergillus ditunjukan olehfraksi fraksi 1 dan fraksi 5.Kata kunci : bioaktivitas, antifungal, extract batang, C filiformis, benalu mangroveMistletoe as arboreal parasitic plant, hold and absorb their nutrient from host. During nutrient absorption, all of metabolites (include secondary metabolites) which host producing will be absorbed too. For thatmistletoe must have capability to developing strategies to adapt. The one of adaptation strategies is creating bioactive compounds, and predicted that between bioactive compounds have antifungal activity.Extraction and fractination of stem of C. filiformis, and testing of its antifungal activity were done. Stem of C. filiformis was extracted in methanol. Crude extract was fractionated chromatograhically using methanolchloroform (20:1) as eluent. Antifungal was tested using agar disc-diffusion methods. There are 5 variation concentration, which tested, 50 ug/disc, 10 ug/disc, 5 ug/disc, 1 ug/disc and 0,5 ug/disc. Theresult showed that C. filiformis found as parasite on Lumnitzera sp and Excoecoria aggaloca. Antifungal test toward C. filiformis fractions showed that Fusarium and Trichoderma were inhibited by all of fractionswhile Aspergillus was inhibited only by fraction 1 and fraction 5.Key words : bioactivity, antifungal, stem extract, C. filiformis, misletoe

oai:ojs.ejournal.undip.ac.id:article/40637 2022-06-18T08:23:33Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/40637 2022-06-18T08:23:33Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 1 (2022): Ilmu Kelautan; 20-28 Adharini, Ratih Ida; Departemen Perikanan, Fakultas Pertanian, Universitas Gadjah Mada Yuniarga, Tesya Ranma; Departemen Perikanan, Fakultas Pertanian, Universitas Gadjah Mada Prasetya, Nindya Larasaty; Departemen Perikanan, Fakultas Pertanian, Universitas Gadjah Mada Rachman, Faizal; College of the Environment and Ecology, Xiamen University 2022-02-13 11:22:14 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/40637 Coverage; Density; Diversity; Harapan Island; Seagrass en Seagrass is an aquatic biota that is ecologically and economically beneficial. This study aims to determine the community structure of seagrass in Harapan Island, Seribu Islands, Indonesia. The research was conducted using purposive sampling method, that divided into two sites which is considered to represent the ecology’s condition of Harapan Island. The site 1 was located adjacent to the mangroves area, while the site 2 was placed near a reclamation development and ship anchoring. Every site had three subsites as replications, each was 50 meters apart. Water parameters temperature, salinity, turbidity, pH, dissolved oxygen (DO), depth, and organic compound of each site were measured. The results showed that coverage of seagrass in site 2 is higher than site 1 that categorized as frequent-common coverage. The site 2 had the density of 220 individuals seagrass per square meter that dominated by Cymodocea rotundata. The highest diversity index was found in the site 1 at 1.15, with the lowest dominance index being 0.39. The distribution pattern in site 1 is clustered and uniform, while site 2 is uniform. The Importance Value Index in site 1 was 114,8 by Halodule uninervis, while site 2 was 125,5 by C. rotundata. It is thought that the low diversity of seagrass at the site 2 due to it was near a reclamation development and ship anchoring that disturb the abundance and community structure of seagrass in Harapan Island. Habitat destruction and anthropogenic impact of seagrass need to be minimized to support environmental coastal and fisheries sustainability.

oai:ojs.ejournal.undip.ac.id:article/446 2014-12-23T07:52:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/446 2014-12-23T07:52:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 1 (2009): Jurnal Ilmu Kelautan; 14-22 Suyarso, Suyarso 2010-11-03 10:24:04 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/446 id Penelitian pematang pantai purba telah dilakukan di Pulau Bunguran, Kepulauan Natuna pada Agustus 2006&nbsp;dan Juni 2007. Penelitian dilakukan dengan menyusun penampangpematang pada empat lokasi menggunakan&nbsp;metode geodetik disertai dengan analisis lingkungan fisik, oseanografi, morfometri dan sedimentologi. Tujuan&nbsp;penelitian membahas status pematang dan kurun waktu terbentuknya dalam kaitannya terhadap kurva muka&nbsp;laut. Hasil penelitian mengungkapkan bahwa pematang pantai purba terletak pada ketinggian antara 200 hlngga 350 cm di atas muka laut sekarang. Pematang tersebut merupakan peninggalan proses susut laut yang terjadi sejak 6 ribu tahun lampau. Pematang purba di Kepulauan Natuna telah dimanfaatkan sebagai&nbsp;tempatpemukiman karena selain merupakan tempat aman terhadap ancaman gelombang khususnya pada musim baratjuga tersedianya air tanah yang memadai. &nbsp; Kata kunci :&nbsp;pematang pantai purba, kurva muka laut, Natuna

oai:ojs.ejournal.undip.ac.id:article/8826 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8826 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 1 (2015): Ilmu Kelautan; 33-37 Pramono, Heru; Department of Marine, Faculty of Fisheries and Marine, Kampus C Universitas Airlangga, Jl. Mulyorejo, Surabaya. 60115 Indonesia Suciati, Pipin; Department of Marine, Faculty of Fisheries and Marine, Kampus C Universitas Airlangga, Jl. Mulyorejo, Surabaya. 60115 Indonesia Andriyono, Sapto; Department of Marine, Faculty of Fisheries and Marine, Kampus C Universitas Airlangga, Jl. Mulyorejo, Surabaya. 60115 Indonesia 2015-03-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8826 en Saluran pencernaan merupakan lingkungan kompleks yang terdiri atas berbagai spesies bakteri. Saluran pencernaan biota perairan terdiri atas bakteri aerob dan anaerob yang mampu memproduksi senyawa antibakteri dan enzim. Tujuan penelitian ini adalah untuk mengisolasi bakteri asam laktat yang menghasilkan protease dan senyawa bakteriosin-like dari saluran pencernaan kepiting bakau. Isolasi dan karakterisasi isolat dilakukan menggunakan media MRS. Supernatan netral bebas sel isolat telah diuji dengan menggunakan disc difusi agar terhadap bakteri patogen dan pembusuk. Uji produksi enzim protease telah diuji dengan metode disc diffusion agar menggunakan media kasein agar. Di antara seratus isolat, terdapat 96 isolat menunjukkan zona bening di MRS + CaCO3,, katalase negatif, dan bakteri Gram positif. Tiga puluh empat isolat bakteri asam laktat menghasilkkan protease dan hanya empat isolat (yaitu IKP29, IKP30, IKP52, dan IKP94) menunjukkan penghambatan yang kuat terhadap bakteri patogen dan pembusuk. Terdapat tiga pola inhibisi dari keempat isolate terhadap Bacillus subtilis, Staphylococcus aureus, Eschericia coli, dan Salmonella sp. Empat isolat tersebut berpotensi untuk dimanfaatkan sebagai starter pada produksi fermentasi produk hasil perikanan. Penelitian ini adalah penelitian pertama terkait isolasi bakteri asam laktat yang menghasilkan protease dan bakteriosin dari saluran pencernaan dari kepiting bakau.Kata kunci: Bakteri Asam Laktat, Bakteriosin-like substance, Protease, Scylla  sp. Digestive tract is complex environment consist of large amount of bacteria’s species. Fish intestine bacteria consist of aerobic or facultative anaerob bacteria which can produce antibacterial and enzym. The objectives of this research were to isolated lactic acid bacteria that produce bacteriocin-like and protease from mud crab digestive tract. Isolation and characterization of isolates were conducted employing media MRS.  Neutralized cell free supernatant of isolates were tested using disc diffusion agar of against pathogenic and spoilage bacteria to indicate bacteriocin-like-producing lactic acid bacteria. Protease-producing isolate was tested using disc diffusion method in casein agar. Among a hundred isolates, 96 isolates were showed clear zone in MRS+CaCO3,, catalase negative, and Gram positive bacteria. Thirty four isolates produced protease and only four isolates (i.e. IKP29, IKP30, IKP52, and IKP94) showed strong inhibition against pathogenic and spoilage bacteria. There were three patterns of inhibition among three isolates against Bacillus subtilis, Staphylococcus aureus, Eschericia coli, and Salmonella sp. All three isolates showed potential uses for produce starter culture for fishery product fermentation purpose. This is the first report of isolation lactic acid bacteria that produced protease and bacteriocin-like from digestive tract of mud crab. Keywords: Lactic acid bacteria, Bacteriocin-like substance, Protease, Scylla  sp.

oai:ojs.ejournal.undip.ac.id:article/67893 2025-06-15T08:04:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/67893 2025-06-15T08:04:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 1 (2025): Ilmu Kelautan; 135-144 Handoko, Dadang; Marine Technology Study Program, Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, IPB University Manik, Henry Munandar; Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University Hestirianoto, Totok; Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University Priandana, Karlisa; Department of Computer Science, Faculty of Mathematics and Natural Science, IPB University Hasan, Rozaimi Che; Department of Generative AI, Faculty of Artificial Inteligence, Universiti Teknologi Malaysia 2025-03-08 15:59:02 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/67893 Pari Island; Multibeam Echosounder System (MBES); Backscatter; Seafloor Classification en Seafloor classification is essential for understanding sediment distribution, marine habitat characteristics, and resource management. Therefore, this study aimed to classify seafloor sediment in the Pari water, Indonesia using high-frequency (400 kHz) backscatter data obtained through the Multibeam Echosounder T-50P. The Angular Range Analysis (ARA) method was applied to analyze backscatter intensity variations across different incidence angles, to enhance the accuracy of sediment classification in this shallow marine environment. Data acquisition was collected using the T-50P, which captured high-resolution acoustic signals from varying angles to generate angular response curves. Analysis was conducted in the curves were then analyzed to differentiate sediment types, with ground-truth sediment samples collected to validate classification outcomes. The result showed that backscatter intensity mosaic had an intensity range of -27 dB to -37.5 dB. Applying ARA enabled the identification of 12 sediment classes, including sandy silt, coarse silt, and clayey sand. Sediment distribution maps, generated via FMGT and visualized with ArcGIS, indicated a predominance of fine-grained sediments. The FMGT-based classification tended to prioritize finer sediment categories, likely due to the acoustic limitations in detecting granular details. Conversely, the in-situ analysis of 15 sediment samples revealed medium sand as the predominant sediment type, accompanied by smaller proportions of coarse sand and coral fragments. The discrepancies between the in-situ sampling and FMGT results were primarily due to the operational frequency of the MBES system, which limits the acoustic signal's penetration to the surface of the seabed. This highlights the importance of in-situ sampling to complement acoustic data, especially in accurately seabed characterization. 

oai:ojs.ejournal.undip.ac.id:article/2191 2014-07-10T17:03:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2191 2014-07-10T17:03:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 4 (2006): Jurnal Ilmu Kelautan; 227-233 Z.A., Muchlisin; Jurusan Ilmu Kelautan Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Syiah Kuala, Banda Aceh 23111 Rudi, Edi; Jurusan Ilmu Kelautan Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Syiah Kuala, Banda Aceh 23111 Muhammad, Muhammad; Jurusan Ilmu Kelautan Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Syiah Kuala, Banda Aceh 23111 Setiawan, Ichsan; Jurusan Ilmu Kelautan Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Syiah Kuala, Banda Aceh 23111 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2191 en Penelitian tentang perbedaan jenis pakan dan jumlah ransum harian kepiting bakau (Scylla serrata) telah dilakukan yang bertujuan untuk mencari pakan alternative dan jumlah pakan harian yang sesuai untuk budidaya kepiting bakau. Metode yang digunakan adalah eksperimen lapangan dengan dua factor perlakuan yaitu perbedaan jenis pakan (ikan rucah, usus ayam dan keong mas) dan jumlah ransom harian (10%, 15%, 20%). Kepiting dipelihara dalam keramba jaring (1m x 1m x 1m) dengan padat tebar 9 ekor/karamba dan dipelihara selama enam minggu. Hasil penelitian menunjukkan bahwa perbedaan jenis pakan dan jumlah ransom harian tidak mempengaruhi secara nyata pertumbuhan dan kelangsungan hidup kepiting bakau.Namun demikian, ikan rucah sebayak 20% memberikan hasil pertumbuhan yang lebih tinggi dibandingkan jenis pakan lainnya. Sementara itu, angka kelangsungan hidup yang tinggi diperoleh pada pemberian keong mas 10% dan 15%.Dengan demikian dapat disimpulkan bahwa pemberian keong mas and usus ayam dapat digunakan sebagai pakan alternative dalam budidaya kepiting bakau, namun demikian pemakaian ikan rucah sebagai pakanmemiliki peran penting dalam budidaya kepiting.Kata kunci : Kepiting bakau (Scylla serrata), keong mas (Pomacea canaliculata), ikan rucah dan usus ayamThe study of feed differences and feeding ration of mud crab (Scylla serrata) on the growth, and survival rate was done. The objective of the present study is to find alternative feeds and daily rations for mud crabculture. Field experimental was used in this study and two factors were evaluated namely type of feed (trash fish, chicken intestine and golden snail) and daily ration of 10%, 15% and 20%. The crabs were reared in poly ethylene cages with stocking density of 9 crabs /cage for six weeks. The result shows that the differences of feed types and daily rations were no significant affected on growth performance and survival rate of mudcrab. However, feed of trash fish 20% have resulted in a higher growth performance than other feeds and higher survival rates were found at feed of golden snail 10% and 15%. Therefore, it is concluded that goldensnail and chicken intestine are possible to be used as alternative feeds for mud crab culture. However trash fish is still play a vital role in crab culture.Key words: Mud crab (Scylla serrata), golden snail (Pomacea canaliculata), trash fish and chicken intestine.

oai:ojs.ejournal.undip.ac.id:article/16267 2021-10-13T03:39:19Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/16267 2021-10-13T03:39:19Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 4 (2018): Ilmu Kelautan; 145-155 Akbar, Nebuchadnezzar; Marine Science Departement. Faculty of Marine Science and Fisheries, Khairun University Irfan, M.; Aquaculture Departement, Faculty of Marine Science and Fisheries, Khairun University Aris, Muhammad; Aquaculture Departement, Faculty of Marine Science and Fisheries, Khairun University 2019-01-04 12:20:41 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/16267 Thunnus obesus; phylogeography; haplotype; fixation index en The bigeye tuna (Thunnus obesus) is a migratory fish which can be found in the Atlantic, Indian and Pacific oceans. This fish has a commercial value and has been exploited worldwide including in Indonesia. The exploitation might affect the genetic diversity and population structure. The fact that the population stock resource is abundant and following fishing activities are increasing, study on population genetic and phylogeography canbe used as information to determine the status of the fish population based on genetic data. The study was conducted to investigate population genetic, and phylogeography of bigeye tuna in the North Moluccas and South Mollucas Seas, Indonesia. A total of 60 tissue bigeye tuna samples were collected from two study sites. The samples were amplified using mitochondrial DNA control region. Within population genetic diversity was revealed of 0.985 and 1.00 in North Moluccas and in south Moluccas, respectively, while between populations was 0.989. The genetic distance within population of North Moluccas (0.029) and South Mollucas (0.24) was very low, and all population was 0.027. The genetic distance between population of North Mollucas and South Mollucas was 0.025, South Mollucas and all population was 0.023, and all population with Norht Mollucas was 0.027. The genetic distance of North Mollucas and Pacific Ocean was 0.029, South Mollucas and Pacific Ocean was 0.023, North Mollucas, South Mollucas and Indian Ocean was 0.32. The Fst value between populations (0.990) showed that the two populations were not genetically different. A similar result showed from the phylogenetic trees analysis which individual of bigeye tuna was randomly clustred between North Moluccas and South Mollucas population, indicating that they were genetically close and from the same population. The population bigeye tuna from the North Mollucas and the South Mollucas exhibits no apparent phylogeographic distribution.

oai:ojs.ejournal.undip.ac.id:article/2382 2022-04-06T18:18:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2382 2022-04-06T18:18:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 1 (2004): Jurnal Ilmu Kelautan; 41-49 Yusuf, M.; Jurusan Ilmu Kelautan-FPIK UNDIP, Kampus Tembalang Semarang - 50239 Handooyo, Gentur; Jurusan Ilmu Kelautan-FPIK UNDIP, Kampus Tembalang Semarang - 50239 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2382 en Perairan pulau Tirangcawang secara nyata menerima buangan limbah yang berasal dari sejumlah pabrik yang berada di hulu sungai Karanganyar dan Tapak. Limbah ini mengakibatkan terjadinya pencemaran yang dampaknya menurunkan kualitas air dan membahayakan bagi kehidupan organisme perairan khususnya hewanmakrobenthos. Tujuan penelitian adalah untuk mengetahui dan mengkaji: (1) kualitas lingkungan perairan, (2) struktur komunitas hewan makrobenthos, dan (3) strategi adaptasi hewan makrobenthos terhadap lingkungan perairan yang telah tercemar. Metode penelitian yang digunakan yaitu studi kasus. Pengambilan sampel dilakukan sebanyak tiga kali ulangan, dengan interval 14-15 hari. Analisis data yang digunakan untuk mengetahui kualitas perairan menggunakan Baku Mutu Air Laut. Analisis untuk mengetahui struktur komunitas hewan benthos yaitu menghitung kelimpahan individu jenis, nilai indeks&nbsp; eanekaragaman jenis (H&rsquo;) dan keseragaman jenis (E). Sedangkan untuk mengetuhui strategi adaptasi menggunakan metode Grafik Frontier. Berdasarkan hasil pengukuran parameter fisika-kimia air menunjukkan bahwa beberapa parameter seperti COD, N-NO2, dan logam berat Cu, Cd, Pb, Ni ternyata nilainya telah melebihi batas yang diinginkan dalam Baku Mutu Air Laut. Berdasarkan hasil perhitungan Nilai indeks H&rsquo; dan E hewan makrobenthos, yaitu berkisar dari rendah sampai dengan sedang. Berdasarkan nilai ini, jika dikaitkan dengan tingkat pencemaran, maka dikatakan bahwa kualitas perairan di daerah penelitian telah tercemar kategori ringan sampai dengan sedang. Pola strategi adaptasi organisme makrobenthos terbagi dua, yaitu: (1) mengarah ke stadia III (kondisi ekosistemmasih baik atau stabil), tedapat pada stasiun I, II, III, dan IV; dan (2) mengarah ke stadia I (kondisi ekosistem labil) terdapat di stasiun V, VI, VII.Kata kunci : pencemaran perairan, strategi adaptasi, makrozoobenthosTirangcawang island waters received waste from factories lie along the rivers. The waste gave pollution which cause the quality of water decrease, so it will bring sea organisms in dangerous condition especiallymacrozoobenthos. The aim of this research is to investigate the quality of water environment and the community structure of makrozoobenthos as well as macrozoobenthos adaptation strategy in relation with polluting material. The research method is case study. The sample were taken three times with 14-15 days. Interval analysis data to on the waters quality by comparing to Sea Water Quality Standard. The result of water physical and chemical parameters measurement showed that COD, N-NO2 and heavy metals Cu, Cd, Pb, Ni valued appearred higher that those stated in Sea Water Quality Standard. The diversity indeces value of macrozoobenthos showed between low to medium level; so based that the waters quality in this location were polluted in the low up to the medium category. Design of adaptation strategy for the macrobenthic organism had two type i.e. stadia III or stabil and good ecosystem condition at station I, II, III, IV; and stadia I or not good and labil ecosystem condition at on V, VI,VII.Key words : waters pollution, adaptation strategy, macrozoobenthos

oai:ojs.ejournal.undip.ac.id:article/40765 2026-05-21T04:27:19Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/40765 2026-05-21T04:27:19Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 4 (2022): Ilmu Kelautan; 315-329 Junaidi, Muhammad; Department of Aquaculture, Faculty of Agriculture, University of Mataram Diniarti, Nanda; Department of Aquaculture, Faculty of Agriculture, University of Mataram Cokrowati, Nunik; Department of Aquaculture, Faculty of Agriculture, University of Mataram Mukhlis, Alis; Department of Aquaculture, Faculty of Agriculture, University of Mataram Astriana, Baiq Hilda; Department of Marine Sciences, Faculty of Agriculture, University of Mataram Conway, Flaxen D. L.; School of Public Policy, Oregon State University 2022-12-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/40765 suitability site; floating net cage culture; multi-criteria analysis; GIS en Spiny lobster is as a very promising culture commodity to be developed due to their high demand in the domestic and global markets. The selection of the suitable location was one of determining factors for the success of lobster cultivation. Various criteria are required for the location of lobster cultivation, both technically and biologically. This research aimed to analyze the suitability sites for lobster culture in floating cages using Multi-criteria Analysis and Geographic Information System (GIS). The research was conducted in May 2018 in North Lombok Regency Water, West Nusa Tenggara. A survey method was applied and used primary and secondary data. Data collected were grouped into 3 categories i.e. oceanographic parameter (water depth, current, wave, and transparency), water quality (temperature, salinity, pH, dissolved oxygen, nitrate, and phosphate), and socio-economic and institutional parameters (legality, easy access, labor availability, and market). Primary data were obtained by measuring oceanography and water quality parameters at 23 observation points on eight transects perpendicular to the coast. Socio-economic and institutional data were obtained from the relevant agencies. Data analysis was done by combining Multi-criteria Analysis and GIS. The result of this research shows that the water condition still supports mariculture activity. The total area covered by this research was 9,087 ha, of which 1,226 ha were found very suitable for lobster culture using floating cage. 

oai:ojs.ejournal.undip.ac.id:article/558 2020-10-25T22:42:05Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/558 2020-10-25T22:42:05Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 3 (2008): Jurnal Ilmu Kelautan; 167-170 Widianingsih, Widianingsih Ridho, Ali Hartati, Retno Harmoko, Harmoko 2010-11-15 05:42:58 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/558 id Penelitian ini bertujuan untuk mengetahui kandungan nutrisi Spirulina platensis yang dikultur pada media Walne, teknis dan kontrol. Kelimpahan S. plantesis tertinggi dicapai pada kuitur dengan media walne, demikian juga kandungan protein, karbohidrat, air, abu dan lemaknya. Pada media Walne, kandungan protein, karbohidrat dan lemak S. plantesis berturut-turut sebesar 50,05&plusmn;0,53; 15,48&plusmn;0,47; dan 0,51&plusmn;0,12%. Sedangkan, pada media teknis, kandungan protein, karbohidrat dan lemak pada S. plantesis berturut-turut adalah 16,23&plusmn;0,4; 12,57&plusmn;0,22; dan 0,18&plusmn;0,03%.&nbsp; Perbedaan ini disebabkan oleh kandungan nutrient yang ada pada media kuitur.Kata kunci : Spirulina platensis, media walne, media teknis, nutrisi

oai:ojs.ejournal.undip.ac.id:article/10042 2020-04-17T06:02:09Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/10042 2020-04-17T06:02:09Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 1 (2016): Ilmu Kelautan; 37-44 Manuputty, Agnestesya; Bogor Agricultural University Lumban Gaol, Jonson; Bogor Agricultural University Agus, Syamsul Bahri; Bogor Agricultural University 2015-03-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/10042 Syamsul Bahri Agus, Bogor Agricultural University,Departemen of Marine Science and Technology en Seagrass has an important role in coastal areas, so it’s sustainability need to be maintained. One effort to preserve it is sustainable manner management of segrass based on the spatial data using remote sensing techniques. The aim of this study was to map seagrass ecosystems and to determining the accuracy level from classification results that obtained by the WorldView-2 images. This study was conducted in Karang Bongkok and Kotok Islands in August 2014 and March 2015. The satellite images data used on this study was WorldView-2 satellite images at the acquisition date of October 5, 2013. The method used to conduct image processing data is Depth Invariant Index (DII) using Support Vector Machine (SVM) classification. The result shows that seagrass mapping in Karang Bongkok and Kotok Islands using DII transformation has 19.5112 ha areas with 72% accuracy on Karang Bongkok Island and 2.5704 ha areas with of 83% accuracy on Kotok Island. Key words: Seagrass mapping, DII, SVM, Karang Bongkok, Kotok Island.

oai:ojs.ejournal.undip.ac.id:article/70213 2026-02-11T19:42:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/70213 2026-02-11T19:42:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 4 (2025): Ilmu Kelautan; 497-506 Sanjayasari, Dyahruri; Fisheries and Marine Science Faculty, Jenderal Soedirman University Research Centre of Biodiversity and Maritime for Research and Community Service Institute of Jenderal Soedirman University Septriono, Wahyu Adi; Fisheries and Marine Science Faculty, Jenderal Soedirman University Supono, Supono; Research Centre for Fishery, National Research and Innovation Agency Amron, Amron; Fisheries and Marine Science Faculty, Jenderal Soedirman University Samudra, Sesilia Rani; Fisheries and Marine Science Faculty, Jenderal Soedirman University Permatasari, Mahardhika Nur; Fisheries and Marine Science Faculty, Jenderal Soedirman University Irawan, Hery; Fisheries and Marine Science Faculty, Jenderal Soedirman University Imlani, Ainulyakin Hasan; Mindanao State University-Tawi-Tawi College of Technology and Oceanography Sanga-Sanga 2025-12-20 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/70213 carbohydrate; survival; juvenile abalone; Haliotis squamata; biochemical composition; hypoxia en Abalone (Haliotis squamata) is a high value marine mollusk with significant aquaculture potential in Indonesia. However, the production of this species faces major constraints, especially during the grow-out phase, due to high juvenile mortality during transport, primarily caused by hypoxic stress. This study investigated the effect of high carbohydrate diets on the physiological response and survival of juvenile abalone under simulated dry shipping-induced hypoxia. A total of 120 juveniles were fed five diets (Gracilaria sp. as a control, and formulated feeds with 25%, 35%, 45%, and 55% carbohydrate content) for 30 days prior the hypoxia treatment. The juveniles were then subjected to hypoxic conditions for 6, 12, and 24 h. All abalones survived the feeding period, but only individuals fed with 55% carbohydrate survived after 24 h of hypoxia. Abalones receiving 45% and 55% carbohydrate diets showed the highest protein and carbohydrate accumulation, respectively. Biochemical analysis revealed that hypoxia triggered a decrease in protein content, stable lipid levels, and fluctuating carbohydrate reserves. These results highlight the critical role of carbohydrates in supporting abalone under hypoxic stress and suggest that carbohydrate enriched diets could reduce mortality during dry transport and improve aquaculture outcomes.

oai:ojs.ejournal.undip.ac.id:article/2254 2012-02-28T11:41:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2254 2012-02-28T11:41:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 1 (2006): Jurnal Ilmu Kelautan; 31-36 Sulaiman, Muhammad; Staf Pengajar Politeknik Pertanian (Politani), Pangkajene Kepulauan, Sulawesi Selatan, Indonesia Jaya, Indra; Fakultas Perikanan dan Ilmu Kelautan IPB, Bogor, Indonesia Baskoro, Mulyono S; Fakultas Perikanan dan Ilmu Kelautan IPB, Bogor, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2254 en Makalah ini menguraikan tentang hasil penelitian tingkah laku ikan di sekitar daerah pencahayaan selama proses penangkapan melalui pendekatan akustik. Tujuan studi adalah mengidentifikasi pola tingkah laku ikan yang berhubungan dengan operasi penangkapan ikan yang menggunakan cahaya. Secara khusus akan dianalisis pola sebaran ikan sebelum dan setelah proses penangkapan, pola kedatangan ikan dan pola tingkah laku ini di sekitar sumber pencahayaan. Penelitian dilakukan di perairan Kabupaten Barru, Selat Makassar (4&deg; 19&rsquo; 19,9" Lintang Selatan &ndash; 119&deg; 16&rsquo; 201" Bujur Timur) dengan menggunakan instrumen side scan sonar. Analisis deskriptif dilakukan untuk menjelaskan pola tingkah laku ikan pada daerah yang disinari. Hasil penelitian menunjukkan kawanan ikan akan ada yang langsung menuju ke sumber cahaya dan ada yang tidak, dan datang pada berbagai kedalaman tergantung pada kedalaman renangnya masing-masing. Kecepatan gerak kawanan ikan mendekati bagan&nbsp; berkisar 0,57 m/detik dan di sekitar pencahayaan sebesar 0,21 m/detik. Kawanan ikan cenderung bergerak dalam pola yang teratur mengelilingi sumber cahaya, dan akan semakin terkonsentrasi di sekitar daerah tangkapan&nbsp; pada saat lampu yang berada di bawah bingkai bagan dipadamkan. Di dalam daerah pencahayaan, pola distribusi ikan cenderung berbentuk bola (spherical) dan berbentuk pita (ribbon) secara vertikal di luar daerah pencahayaan Kata kunci: pendekatan akustik, tingkah laku ikan&nbsp;This paper describes the results of fish behavior study&nbsp; around illuminated area during capture process through acoustic approach. The objective of this study is to identify the pattern of fish behavior related to the operation of fishing gear using light. This research specifically aims to analyze the pattern of fish distribution before and after the capture process, to analyze the arrival pattern and to analyze fish behavior around the light source. This research was conducted in Barru Regency waters, Makassar Strait (4&deg; 19&rsquo; 19,9" S. Lat. &ndash; 119&deg; 16&rsquo; 201" E. Lon.) using Side Scan Sonar Instrument. Descriptive analysis was employed to examine the behavioral pattern around the given illumination area. The result shows that there are some fish came directly to the light source and&nbsp; stay in the vicinity of the illuminated area while others are outside of that area. The fish school&nbsp; approaching the illuminated area was found at the depth of 5-10 meters and 20-30 meters. The fish school movement speed approaching the Bagan Rambo reached 0.57 m/s and 0.21 m/s when fish school was around the illuminated area. The fish school tends to move in regular pattern encircling the light source and became concentrated once the light is turned off. In the illuminated area the shape of the fish school tend to be spherical, while outside of the area is tend to be in the shape of ribbon. Key words: acoustic approach, fish behaviour

oai:ojs.ejournal.undip.ac.id:article/27585 2021-10-13T01:00:33Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/27585 2021-10-13T01:00:33Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 1 (2020): Ilmu Kelautan; 1-6 Kurniasih, Eka Maya; Marine Science Department, Faculty of Fisheries and Marine Science, Diponegoro University Sembiring, Andrianus; Yayasan Biodiversitas Indonesia Pertiwi, Ni Putu Dian; Yayasan Biodiversitas Indonesia Anggoro, Aji Wahyu; Department of Ecology and Evolutionary Biology, University of California Cahyani, Ni Kadek Dita; Department of Ecology and Evolutionary Biology, University of California Dailami, Muhammad; Faculty of Fisheries and Marine Science, Universitas Brawijaya Ambariyanto, Ambariyanto; Marine Science Department, Faculty of Fisheries and Marine Science, Diponegoro University Wijayanti, Diah Permata; Marine Science Department, Faculty of Fisheries and Marine Science, Diponegoro University Meyer, Christopher P.; Department of Invertebrate Zoology, Smithsonian National Museum of Natural History 2020-03-08 09:15:09 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/27585 cryptic species; decapoda; diversity; dead coral head; Raja Ampat en Cryptic organisms that live within the interstices of reef habitats contribute significantly to coral reef biodiversity. One example of this cryptic biodiversity is the high abundance of decapods in dead coral heads that associated with various biota. However, this diversity poorly studied especially species identification and species richness. This study aims to estimate the decapods diversity in Raja Ampat, Papua, using Pocillopora dead coral head method as semi-quantitative sampling approach. Raja Ampat in Papua is chosen because it situated in the center of Coral Triangle marine hotspot. Data were collected from 10 dead coral heads of genus Pocillopora from 10-meter depth near the islands of Kri and Misool. This study observed a total of 205 individuals Decapoda from Kri Island and 672 Individual from Misool Islands. Species richness observation (Chao1 and ACE) of the total samples reports only 11 families of decapoda detected in this study. Rarefaction curve reach an asymptote after all after all ten dead coral were analyzed; indicating that additional sample collection would not change estimates of diversity found in this study. The Shannon-Wiener index diversity on the Kri Island showed lower diversity value (2.09) compared to Misool Island (2.18). In the future, this research can be used as a basis for understanding the diversity of coral reefs as well as for management and conservation of coral reef ecosystems.

oai:ojs.ejournal.undip.ac.id:article/5133 2017-08-19T22:45:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/5133 2017-08-19T22:45:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 4 (2012): Ilmu Kelautan; 190-198 Rahmawati, Susi; Pusat Penelitian Oseanografi, Lembaga Ilmu Pengetahuan Indonesia Jl. Pasir putih I No. 1 Ancol Timur, Jakarta 14430 Telp./Fax. (021) 67413850/64711948, e-mail: susi005@lipi.go.id, Fahmi, Fahmi; Pusat Penelitian Oseanografi, Lembaga Ilmu Pengetahuan Indonesia Jl. Pasir putih I No. 1 Ancol Timur, Jakarta 14430 Telp./Fax. (021) 67413850/64711948 Yusup, Deny S; Departemen Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana, Bali, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/5133 en Salah satu peran ekologis padang lamun adalah tempat pemeliharaan ikan yang ditunjang oleh struktur vegetasi lamun. Keberadaan lamun dapat memengaruhi kelimpahan ikan pada suatu perairan dangkal. Penelitian ini bertujuan mengidentifikasi kondisi lamun dan fungsi lamun sebagai area pemeliharaan ikan dalam menunjang kelimpahan ikan. Penelitian dilakukan di Perairan Kendari, Sulawesi Tenggara. Stasiun penelitian ditentukan pada enam lokasi, yaitu tiga lokasi bervegetasi lamun dan tiga lokasi tanpa vegetasi lamun. Parameter penelitian antara lain struktur komunitas lamun dan kelimpahan ikan. Data dianalisis secara statistik dengan one way ANOVA dan korelasi Person program Grahpad Prism 5.0 (Trial session). Penutupan lamun rata-rata berkisar antara 25 - 51% dan kerapatan berkisar 327,78 - 597,22 ind m-2.Struktur komunitas pada ketiga vegetasi lamun tidak berbeda secara signifikan. Ikan tercatat 73 jenis dan 1815 individu, antara lain ikan-ikan yang biasa ditemukan di ekosistem lamun seperti Apogon margaritophorus, Lutjanus gibbus, dan Achreichthys tomantosus. Jenis ikan yang paling melimpah adalah Siganus canaliculatus dengan rata-rata kelimpahan 0,378 ind m-2. Rata-rata kelimpahan ikan lebih besar pada stasiun bervegetasi dibandingkan stasiun yang tidak bervegetasi. Kerapatan lamun memiliki korelasi positif terhadap kelimpahan ikan (p&lt;0,05). Kondisi lamun di Perairan Kendari tergolong cukup baik dan dapat menunjang kekayaan dan kelimpahan ikan pantai.Kata kunci: kerapatan lamun, peran ekologi, pemeliharaan ikan, SulawesiOne of ecological role of seagrass is as nursery area which hold by their own vegetation structure. Seagrass community can influence the abudance of fish in a shallow water. This study aimed to identify the seagrass bed condition as nursery area for supporting fish abudance. The study was conducted in Kendari Waters, South-East Sulawesi. Research station was set in six location .i.e. three location at seagrass vegetated and three location without seagrass. Parameter of the study was community structure of seagrass and abudance of fish. Data were analised statistically using one way ANOVA and Person correlation Grapad Prism 5.0 (Trial session). Mean of seagrass coverage was about 25 to 51% and density 327.78 to 597.22 ind m-2. There were no difference on community structure of seagrass at each location. There were 73 species of fish and 1815 individuals, there were fish that usually find in seagrass ecosystem for example Apogon margaritophorus, Lutjanus gibbus, and Achreichthys tomantosus. The most abundant species was Siganus canaliculatus (Siganidae) with mean abundance 0.378 ind m-2. Mean of fish abundance was higher in vegetated area than unvegetated. Seagrass density positively correlated with fish abundace (p&lt;0.05). Seagrass community in Kendari Water showed a fairly good and good condition to support coastal fishes richness and abundance.Key words: seagrass density, ecologi role, nursery area, fish communities, Sulawesi

oai:ojs.ejournal.undip.ac.id:article/57926 2023-12-27T19:14:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/57926 2023-12-27T19:14:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 4 (2023): Ilmu Kelautan; 313-320 Amal, Ikhlasul; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Yudiati, Ervia; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Sedjati, Sri; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Ighwerb, Mostafa Imhmed; Department of Fisheries and Marine Sciences, Asmarya Islamic University 2023-12-06 06:51:33 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/57926 Alginate; Edible film; Ginger Oil; Shrimp en Litopenaeus vannamei is a world trade commodity that has a high economic value but is easily degraded. To maintain the quality, post-harvest peeled shrimp needs to be coated. The research objective was to determine the effectiveness of adding edible coatings with a formulation of alginate and ginger oil combination as a natural preservative for shrimp. The research method used was laboratory experimental with a completely randomized design (CRD). The treatments were additional peeled shrimp with different concentrations of alginate, i.e. 0 g, 1.5 g, and 3.0 g with two repetitions. The addition of 100 ml aquadest, 4 g CaCl2, 15 mL glycerol, and 1.5 mL of ginger oil was administered in every treatment. Total Plate Counts (TPC), Escherichia coli, and Vibrio cholerae were determined in initial condition, 3rd, and 6th days after the storage time in a 40C refrigerator.  The edible film test with 5 repetitions, including thickness, tensile strength, and break elongation. The results on TPC (5.00 x 105 CFU.g-1) and TPC of V. cholerae (Negative.25 g-1) show that all the treated shrimp meet the standard value (SNI 3457:2021) requirements. Most Probably Number of E. coli in alginate addition of 0 and 1.5 g i.e. &lt;3 MPN.g-1 treatments, do not meet the requirements. The bacterial test and edible film mechanical properties showed that the addition of 3.0 g alginate was the most effective treatment compared to other treatments (α=0.05). A formulation of alginate and ginger oil combination is an effective edible coating for reducing the pathogenic bacteria of peeled shrimp L. vannamei.

oai:ojs.ejournal.undip.ac.id:article/1410 2017-08-19T22:49:45Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1410 2017-08-19T22:49:45Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 1 (2010): Ilmu Kelautan; 53-58 Atmodjo, Warsito; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Tembalang, Semarang, Telp/Fax. (024) 7476498, 0812326091280, warsito_osigeo@yahoo.com 2012-01-30 23:18:47 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1410 id Penelitian ini dilakukan untuk menganalisis sebaran sedimen, faktor arus serta gelombang yang mempengaruhinya di perairan delta Sungai Bodri. Penelitian ini dilakukan pada bulan Mei sampai Juni 2006.&nbsp; Metode eksploratif digunakan dalam penelitian ini, sampel sedimen diambil dengan stratied purpose sampling berupa sedimen suspensi muara sungai dan sedimen dasar perairan Delta Sungai Bodri. Hasil penelitian menunjukkan bahwa sebaran sedimen delta pada Sungai Bodri adalah gosong pasir (swas bar) dan pola akumulasi gosong pasir sejajar dengan garis pantai. Komposisi sedimen delta berupa lanau pasiran, pasir lanauan, dan pasir. Faktor hidrooseanogra&nbsp; yang mempengarihi sebaran sedimen delta Sungai Bodri yang dominan adalah debit Sungai Bodri&nbsp; 9,17 - 54,48 m3/dt.; input sedimen suspensi 0,26 &ndash; 0,42 kg/dt.; MSL pasut 58,65 cm.; LLWL pasut 37 cm.; HHWL 98 cm.; kedalaman perairan (-11) cm sampai (-111) cm.; kecepatan arus (0,16 to 0,68) m/dt.; arah arus Utara (210&deg;-267&deg;) Timur; tinggi gelombang (0,08-1,5) m dan arah gelombang Utara (200&deg;-318&deg;) Timur. Faktor oseanografi yang dominan pembentuk sebaran sedimen delta Sungai Bodri adalah gelombang. Kata Kunci : delta, sedimen, Sungai Bodri&nbsp;The pattern distribution of sediment of River Bodri delta and oceanographic factor influenced them are studied during May until June 2006. Explorative&nbsp; methods was apllied, the sample of sediment i.e. suspended and bottom sediment were taken from river mouth of Bodri. The results showed that&nbsp; the pattern sediment accumulation at delta River Bodri are swas bar and the sediment were spreaded out parallel with the coastal line. Component of sediment delta concist of sandy silt, silty sand and sand. Factor of hidro-oceanography which built distribution pattern of sediment delta of River Bodri as follows : The value of deschart River Bodri is 11,3315 m3/sec.; sediment suspention input 0,0835 kg/sec.; mean sea level of tides 58,65 cm.; height waters of low tides 37 cm.; height water of height tides 98 cm.; depth of subsurface waters (-11) cm to (-111) cm.; velocity of suurents is (0,16 to 0,68) m/ sec.; the trend of currents is North (2100-2670) degree East; height of wave (0,08-1,5) m and bearing of wave North (2000-3180) degree East. The dominant agent of oceanographic factors of pattern sediment accumulation in delta of River Bodri was waves energi. Key Words : delta, sediment, Bodri River

oai:ojs.ejournal.undip.ac.id:article/13417 2021-10-13T06:09:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/13417 2021-10-13T06:09:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 2 (2017): Ilmu Kelautan; 49-58 Abfa, Iqna Kamila; Satya Wacana Christian University Radjasa, Ocky Karna; Marine Science Department Universitas Diponegoro Susanto, A B; Faculty of Fisheries and Marine Science Diponegoro University Nuryadi, Handung; Faculty of Fisheries and Marine Science Diponegoro University Karwur, Ferry F.; Graduate School of Biology Satya Wacana Christian University 2017-06-06 06:44:52 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/13417 en During the past two decades research on marine bacteria has highlighted the tremendous potential of symbiotic-microorganisms as a source of bioactive secondary. One of the potential of the bacterial symbionts is producing a natural pigment, and these organisms can be used as a sustainable source of natural pigments. Carotenoid is one of the most important pigments that has important roles in physiological and molecular processes of microorganisms, as well as for human health. The objective of this study is to analyze carotenoid pigments from marine bacterial symbionts from sponge and to identify bacterial symbionts that produce carotenoid pigments. Pigment analysis was performed by a UV-VIS spectrophotometer and High Performance Liquid Chromatography (HPLC). Molecular bacterial identification was performed based on 16S rDNA sequence. The isolation of bacterial symbionts from C. vaginalison Zobell 2216E medium resulted in one bacterium, CB-SP5, positively synthesized carotenoids. By reverse phase HPLC analysis, the carotenoid pigments in the bacterial symbionts were identified as diadinoxanthin, fucoxanthin, neoxanthin, dinoxanthin, anddiadinochrome. CB-SP5 shared the highest level of 16S rDNA gene sequence similarity with Psychrobacter celer (99%). Keywords : carotenoid, sponge, bacterial symbiont, 16S rDNA.

oai:ojs.ejournal.undip.ac.id:article/32047 2022-05-19T09:28:26Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/32047 2022-05-19T09:28:26Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 4 (2020): Ilmu Kelautan; 165-172 Pratama, Munawir Bintang; The University of Edinburgh Venugopal, Vengatesan; The University of Edinburgh Ajiwibowo, Harman; Institut Teknologi Bandung Ginting, Juventus Welly; Center for Coastal Research and Development Novico, Franto; Marine Geological Research and Development Center of Indonesia 2020-11-26 09:05:37 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/32047 Numerical modelling; Tide; Delft3D; Calibration; Sunda Strait en In the past years, Indonesian people put more attention to Sunda Strait located between Java and Sumatra Islands, one of the busiest straits occupied with residential, recreational, fisheries, transportation, industrial and mining activities. Previous works on numerical modelling of tidal flow hydrodynamics of the Sunda Strait have resulted in good agreement against field data; however, the calibration of the models used was not described in detail. This paper presents the process of setting up the model, extensive calibration, validation and prediction of tidal currents for the Sunda Strait. A two-dimensional tidal-driven model is constructed using Delft3D, an open-source developed by Deltares. Four different bathymetry datasets, four different boundary condition configurations, and various bed roughness values are used, and their suitability in predicting tidal water level and current are investigated. It is found that changing the bathymetry and boundary conditions improve the model validation significantly. GEBCO_2019 bathymetry dataset outperforms the Batnas, even though it has a coarser resolution. For boundary conditions, the combination of water level and current velocity results in a better validation compares to using water level or current velocity only. However, the bed roughness shows an insignificant influence in predicting tidal conditions. The averaged current velocity is lower at the Southern than the Northern side of the strait due to a larger cross-section, consequence of deeper water. High tidal currents of magnitude around 2 m.s-1 are seen at the bottleneck of the strait.

oai:ojs.ejournal.undip.ac.id:article/7092 2017-08-19T22:43:57Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7092 2017-08-19T22:43:57Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 3 (2013): Ilmu Kelautan; 172-178 Yusuf, Syafyudin; Fakultas Ilmu Kelautan dan Perikanan, UNHAS, Kampus Tamalanrea Km 10 Makassar, Indonesia 90345 Jompa, Jamaluddin; Fakultas Ilmu Kelautan dan Perikanan, UNHAS, Kampus Tamalanrea Km 10 Makassar, Indonesia 90345 Zamani, Neviaty P.; Fakultas Perikanan dan Ilmu Kelautan, IPB, Kampus Dramaga, Bogor, Indonesia 16680 Junior, M. Zairin; Fakultas Perikanan dan Ilmu Kelautan, IPB, Kampus Dramaga, Bogor, Indonesia 16680 2013-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7092 en Perairan laut tropis seperti di Indonesia yang memiliki variasi lingkungan yang hampir konstan– diduga periode pemijahan karang melebar sampai beberapa bulan dan pada fase bulan yang berbeda, sehingga sulit menentukan waktu pemijahannya dalam skala bulan, hari dan jam. Penelitian ini akan memberikan informasi pola reproduksi dan sinkronisasi pemijahan beberapa jenis karang Acropora spp di Kepulauan Spermonde, Makassar. Sebanyak tujuh jenis karang Acropora spp. diamati kematangan atau kemunculan gonad dan pemijahannya di alam (in situ) dan atau di laboratorium (ex situ) di Marine Station Universitas Hasanuddin. Pola reproduksi menunjukkan spawning berlangsung setiap musim hujan pada bulan Februari-Maret selama tiga tahun berturut-turut. Pemijahan berlangsung secara sinkron dan broadcasting pada awal bulan purnama (0 BP sampai +2 BP), pada jam 18:10–19:00). Bersamaan dengan itu, kondisi lingkungan pemijahan berlangsung  saat puncak pasang tinggi dengan suhu rata-rata harian perairan 30,3ºC dan curah hujan yang masih tinggi di bulan Maret. Informasi ilmiah ini akan bermanfaat untuk mengembangkan riset dan tehnik reproduksi karang di alam dan laboratorium sebagai upaya merestorasi dan merepopulasi jenis karang tertentu. Kata kunci : Acropora spp, reproduksi seksual, Kepulauan Spermonde It has been thought that Indonesian marine tropical waters have less environmental variability, so that spawning period of coral extend for several months and occured during different lunar phases. Therefore the timing of coral spawning in a year cannot be predicted especially for monthly, daily and hourly scales. This study was aimed to investigate the reproductive pattern, and the environmental cues of Acropora spp. in Spermonde Islands  reefs of Makassar. Spawning corals have been determined the presence of mature gonad and spawning event in their habitats (in situ) and in the laboratory (ex situ) of Marine Station of Barrang Lompo Island, Hasanuddin University. Here we showed that seven species of Acropora spp. spawned in February and March of rainy season for consecutive three years (2010, 2011, 2012). The multispecific broadcasting spawning took place in lunar period (0–2 AFM) at 06:10–07:00 pm). The spawning time occured in high tide and the temperature was 30,3oC. This study will be useful for development of coral reproduction research and technique in both field and laboratory as an effort to restore coral reef and enhance coral population in particular. Keywords:  Acropora spp, sexual reproduction, Spermonde Islands

oai:ojs.ejournal.undip.ac.id:article/59240 2024-10-04T07:32:43Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/59240 2024-10-04T07:32:43Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 2 (2024): Ilmu Kelautan; 261-272 Martono, Martono; Center for Climate and Atmospheric Research, National Research and Innovation Agency Santoso, Heru; Center for Climate and Atmospheric Research, National Research and Innovation Agency Nurlatifah, Amalia; Center for Climate and Atmospheric Research, National Research and Innovation Agency Felix, Mark Jayson; Philippine Space Agency 2024-06-20 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/59240 Mindanao Eddy; Halmahera Eddy; trend, El Niño; La Niña en Global warming, due to increasing greenhouse gases, has increased the frequency of El Niño Southern Oscillation events and influenced ocean dynamics. This research determined the trends of Mindanao Eddy’s and Halmahera Eddy’s over 28 years (1993–2020). The data used in this research consist of sea surface currents, surface wind, sea surface height, and NIŇO3.4 index. Determination of eddy currents was done using the Automated Eddies Detection method. The results showed that the Asian-Australian monsoon and El Niño Southern Oscillation events influence the characteristics of the Mindanao Eddy and Halmahera Eddy. During the Asian monsoon, the position of the Mindanao Eddy and Halmahera Eddy shifts southward, while during the Australian monsoon, it shifts northward. During El Niño, the position of the Mindanao Eddy turns eastward with a smaller diameter, but the position of the Halmahera Eddy does not shift. Conversely, during La Niña, the position of the Halmahera Eddy turns northwestward with a smaller diameter, while the position of the Mindanao Eddy remains unchanged. The shift of the Mindanao Eddy during the El Niño event is closely related to the weakening of the North Equatorial Current and the strengthening of the North Equatorial Countercurrent. On the other hand, the shift of the Halmahera Eddy during the La Niña event is related to the strengthening of the South Equatorial Current as a source of water masses for the New Guinea Coastal Current. The velocity of the Mindanao Eddy and Halmahera Eddy experienced an increasing trend in 1993-2020.

oai:ojs.ejournal.undip.ac.id:article/1625 2014-12-30T01:00:58Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1625 2014-12-30T01:00:58Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 4 (2009): Jurnal Ilmu Kelautan; 207-214 Sala, R.; Department of Marine Science, the State University of Papua Jl. Gunung Salju, Manokwari 98314, Indonesia. Email: ridwansala@yahoo.com 2012-02-06 07:17:20 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1625 en The objectives of this study are to detect the changes in size composition of skipjack tuna, and to examine any association that may exist between skipjack tuna and other tunas taken from the northeastern Indonesian waters. Data were collected through a field survey by taken samples of catch of commercial fisheries in the study areas. Results of the study revealed that size composition of skipjack taken by pole-and-liners tended to be stable over the observation periods and was dominated by size class larger than 2.5 kg. However, there was a tendency of domination of skipjack for size class less than 1 kg, particularly taken by Bitung&rsquo;s purse-seiners fishing around North Sulawesi water. It was also revealed that skipjack taken by the commercial fishery show a strong association with other tuna, especially yellowfin tuna. Key words : skipjack, size composition, commercial fishery, northeastern waters of Indonesia &nbsp;Penelitian ini bertujuan untuk mengevaluasi perubahan komposisi ukuran cakalang yang tertangkap dan asosiasi yang mungkin ada antara cakalang dan tuna yang lain pada hasil tangkapan di kawasan utara perairan Indonesia bagian timur. Data penelitian ini diperoleh melalui survey lapangan dengan mengambil sampel hasil tangkapan dari perikanan komersial di lokasi penelitian. Dari hasil penelitian ini terungkap bahwa komposisi ukuran cakalang yang tertangkap oleh huhate (pole-and-liner) cenderung stabil dan didominasi oleh ukuran lebih besar dari 2,5 kg. Akan tetapi untuk cakalang yang tertangkap oleh pukat cincin didominasi oleh ukuran yang kurang dari 1 kg, terutama yang tertangkap di perairan sekitar Sulawersi Utara. Hasil penelitian ini juga mendapatkan adanya korelasi yang erat antara ikan cakalang dan tuna ekor kuning yang tertangkap oleh perikanan komersial. Kata kunci : cakalang, komposisi ukuran, perikanan komersial, perairan bagian utara kawasan timur Indonesia.

oai:ojs.ejournal.undip.ac.id:article/12978 2021-10-13T03:57:28Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/12978 2021-10-13T03:57:28Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 2 (2018): Ilmu Kelautan; 81-86 Maslukah, Lilik; The Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Adisaputro, Didi; Institut Teknologi Sumatera Pranowo, Widodo Setiyo; The Department of Hydrography, Indonesian Naval Postgraduate School (STTAL) 2018-06-21 21:26:41 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/12978 en A precise quantification of the sea surface partial pressure of carbon dioxide (pCO2(water)) at the water surface is required in order to define the role of the sea in air-sea exchange of CO2. Even though the pCO2(water) can be measured directly, the semi-empirical model has seen numerous application in determining the pCO2 (water) due to a time-and cost-efficient. This study aims to compare the pCO2 and FCO2 (Flux of CO2) calculated using Zhai and Zhu algorithm with the underway datasets of pCO2 obtained during the scientific cruise of CISKA-SPICE III in April 2013. The partial pressure of CO2 (pCO2) was measured using a high-accuracy electrochemical instrumentation underway HydroC/CO2 FT (flow through) with an error ±1 μ atm. Furthermore, in order to calculate the pCO2 and the FCO2 employing widely used algorithms, some data were needed including wind speed, sea surface temperature and chlorophyll-a extracted from MODIS (Moderate Resolution Imaging Spectroradiometer). According to the results obtained, the difference between the pCO2 and FCO2 derived from those two algorithms are significant. The underway datasets of pCO2 are ranging from 409.52-544.01 µatm. Meanwhile, the pCO2 derived using the Zhai algorithm and Zhu algorithm are between 405.003–422.79 µatm and 398.94-752.06 µatm respectively. The FCO2 are varied between 0.02–0.06 molC.m-2.day-1 (Zhai algorithm), 0.02-0.57 molC.m-2.day-1  (Zhu algorithm) dan 0.04-0.23 molC.m-2.day-1 (the underway datasets). A comparison of the two results reveals that pCO2 derived using Zhai algorithm is closer with the underway datasets compared with the result of pCO2 calculated using Zhu algorithm with the MRE (Mean Relative Estimation Error) as large as 19.4% and 39% respectively. Taken together, these results suggest that the Zhai algorithm is more appropriate to determine algorithms for estimating the air-sea exchange of carbon dioxide in the Malacca Straits.Keywords: carbon dioxide, Malacca Straits, pCO2, FCO2, Zhai and Zhu algorithm

oai:ojs.ejournal.undip.ac.id:article/2326 2012-03-03T01:51:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2326 2012-03-03T01:51:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 4 (2007): Jurnal Ilmu Kelautan; 181-186 Patikawa, Jesaya A; Jurusan Manajemen Sumberdaya Perairan, Fakultas Perikanan dan Ilmu Kelautan Universitas Pattimura – Poka, Ambon Telp. (0911) 352002; HP. 081343048859; E-mail. boypattikawa@yahoo.com Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2326 en Studi tentang pertumbuhan kerang bulu, Anadara antiquata dilakukan di perairan pantai Passo, Teluk Ambon bagian dalam.&nbsp; Data pertambahan panjang diperoleh melalui&nbsp; pemberian tanda dan tangkap ulang.&nbsp; Parameter pertumbuhan, umur maksimum dan hubungan panjang berat diduga dengan menggunakan metode Gulland dan Holt plot dan dengan persamaan yang dikemukan oleh Pauly. Nilai estimasi parameter pertumbuhan yaitu L&yen;,, K dan t0 adalah berturut-turut 101,6 mm, 0,23/thn dan - 0,986 tahun.&nbsp; Umur maksimum yang dapat dicapai kerang bulu adalah 12,04 tahun.&nbsp; Hubungan panjang berat memperlihatkan pertumbuhan yang isometrik. Kata kunci: Pertumbuhan, kerang bulu, Anadara antiquata &nbsp; Study on the growth of mangrove cockle (Anadara antiquata) was conducted in intertidal area of Passo, inner Ambon bay.&nbsp; Size increment data were&nbsp; collected by means of tagging and recapture.&nbsp; Growth parameters, life span and length-weight relationship were estimated using Gulland and Holt plot using the formula proposed by Pauly. Estimated&nbsp; growth parameters i.e., L&yen;,, K dan t0 were 101.6 cm, 0.23/ yr and &ndash; 0,986 year&nbsp; respectively.&nbsp; The life span of this species estimated to be 12.04 years.&nbsp; Length-weight relationship showed&nbsp; isometric growth. Key words : Growth, mangrove cockle, Anadara antiquata

oai:ojs.ejournal.undip.ac.id:article/39036 2022-02-13T04:23:18Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/39036 2022-02-13T04:23:18Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 4 (2021): Ilmu Kelautan; 225-236 Iskandar, Mochamad Riza; Research Center for Oceanography, Indonesian Institute of Sciences Purwandana, Adi; Research Center for Oceanography, Indonesian Institute of Sciences Surinati, Dewi; Research Center for Oceanography, Indonesian Institute of Sciences Zheng, Wang; Key Laboratory of Ocean Circulation and Waves, and Institute of Oceanology, Chinese Academy of Sciences 2021-12-06 01:29:27 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/39036 Halmahera Sea; water masses; vertical mixing; cruise; salinity; temperature en Halmahera Sea is one of the locations in the eastern route of Indonesian Throughflow (ITF), where high salinity water is mainly transported by the ITF. The description of water mass in the Halmahera Sea from the perspective of water mass, and related mixing is important. It is not only useful for understanding water mass features, but it can also be used to determine the strength of the turbulent mixing, and so allow how it relates to the water transformation. Here, we report the water mass properties and estimation of mixing quantities in the Halmahera Sea from the CTD profiles based on recent onboard observations during the IOCAS cruise in November 2016. The water mass analysis was done by examining the characteristics of water types in the Temperature-Salinity (T-S) diagram. The mixing estimation uses the density profile derived from temperature and salinity profiles and the quantification of vertical turbulence observed by density overturn. Halmahera Sea is to be found as the location where the thermocline salinity changes abruptly, it is shown from the erosion of salinity maximum in the density of 22-26σθ decreased from the north to the south of the basin. It is associated with strong mixing with spots of higher vertical diffusivity in the thermocline and intermediate layer. In the upper layer, the mixed layer depth in the Halmahera Sea is relatively shallow with an average of about 16.95 m and it is associated with weak wind stress during this month.

oai:ojs.ejournal.undip.ac.id:article/51417 2024-03-31T21:48:11Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/51417 2024-03-31T21:48:11Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 1 (2024): Ilmu Kelautan; 1-14 Fadhlurahman, Yusuf Nauval; Department of Geography, Faculty of Mathematics and Natural Sciences, Universitas Indonesia Manessa, Masita Dwi Mandini; Department of Geography, Faculty of Mathematics and Natural Sciences, Universitas Indonesia Semedi, Jarot Mulyo; Department of Geography, Faculty of Mathematics and Natural Sciences, Universitas Indonesia Efriana, Anisya Feby; Department of Geography, Faculty of Mathematics and Natural Sciences, Universitas Indonesia Haidar, Muhammad; Department of Civil Engineering, The University of Tokyo Mapping Surveyor, Geospatial Information Agency||Indonesia 2024-03-27 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/51417 Seagrass; Development; Lyzenga; Unsupervised; Tourism en The shallow waters around Derawan Island are renowned for their beauty, attracting a significant number of tourists. Since the 2008 National Sports Week (PON) in East Kalimantan, the construction of inns and jetties has enhanced both accommodation and accessibility on the island. However, this development has also impacted the seagrass beds in the surrounding shallow waters. This study examines the changes in the area and density of seagrass beds from 2003 (prior to the PON activities) through to 2011 (a few years post-PON) and in 2021 (the most recent conditions), assessing the effects of lodging and jetty construction on these beds. Data were collected via field surveys using the photo transect method, and the benthic habitat map was created using Landsat 8 OLI Imagery, applying the Lyzenga water column correction algorithm and unsupervised classification method. The Normalized Difference Building Index (NDBI) algorithm and land digitization were utilized to track the development of the inns and jetties, revealing a rapid, widespread increase in construction throughout the island's southern region (R-square = 0.59). The study findings indicate a significant degradation of seagrass meadows between 2003 and 2021, particularly near populated areas on the southern coast, resulting in decreased density levels.

oai:ojs.ejournal.undip.ac.id:article/8516 2020-04-17T06:00:30Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8516 2020-04-17T06:00:30Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 3 (2014): Ilmu Kelautan; 139-148 Sulisyati, Rohmani; Balai Taman Nasional Karimunjawa Jl. Sinar Waluyo Raya no. 248 Semarang, 50273, Indonesia Poedjirahajoe, Erny; Fakultas Kehutanan, Universitas Gajah Mada Jl. Agro Bulaksumur Yogyakarta 55281, Indonesia WF, Lies Rahayu; Fakultas Kehutanan, Universitas Gajah Mada Jl. Agro Bulaksumur Yogyakarta 55281, Indonesia Fandeli, Chafid; Fakultas Kehutanan, Universitas Gajah Mada Jl. Agro Bulaksumur Yogyakarta 55281, Indonesia 2014-09-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8516 en Karakteristik terumbu karang di suatu lokasi wisata perlu diketahui agar terumbu karang tetap dapat melangsungkan fungsinya dengan optimal. Penelitian ini bertujuan untuk mengetahui karakteristik terumbu karang di zona pemanfaatan wisata Taman Nasional Karimunjawa. Dilakukan pada bulan November 2013 pada 14 lokasi. Pengamatan terumbu karang dengan metode line intercept transect untuk melihat substrat dasar berdasar lifeform. Transek dilakukan pada dua kedalaman yaitu 3 meter dan 6–8 m untuk mewakili perairan dangkal dan dalam. Analisis kualitatif dilakukan untuk melihat tutupan karang keras serta pengukuran nilai indeks keanekaragaman, keseragaman dan dominasi. Hasil pengukuran kondisi fisik perairan termasuk dalam perairan produktif yang dapat menunjang kehidupan organisme di dalamnya. Kondisi terumbu karang pada daerah dangkal ditemukan 15 famili, 41 genus dan 104 species karang. Persentase tutupan karang keras termasuk kategori sedang – sangat baik. Keanekaragaman jenis yang melimpah sedang hingga tinggi dengan kondisi komunitas antara labil hingga stabil dan hampir tidak ditemukan dominasi jenis tertentu. Pada daerah dalam terdapat 15 famili, 39 genus dan 99 species. Tutupan karang keras sedang – baik, dengan keanekaragaman jenis melimpah tinggi dan stabil serta tidak ada jenis yang dominan. Genus Acropora dan Porites dapat ditemui pada seluruh lokasi. Karakteristik terumbu karang berkaitan dengan letak keberadaan pulau, terumbu karang pada pulau terlindung cenderung mempunyai komunitas yang stabil. Kata kunci: terumbu karang, tutupan karang keras, lifeform Coral  reef characteristic in the recreational area should be known to establish the function optimally. This study aims to quantify the characteristic of coral reef throughout tourism utilization zone of Karimunjawa National Park. Surveys were conducted  during November 2013 at 14 locations. Substrate cover was collected using line intercept transect methods. Transects were deployed at two depth i.e 3 meters and 6–8 meters to represent the shallow and the deep water. Qualitative analysis were done to measure the hard coral cover and diversity index, evenness index and domination. The result showed that physical condition of aquatic environment was productive water that can support living organisms. For shallow water there were 15 families, 41 generas and 104 species of hard coral. Hard  coral cover ranged from 36,5-82% and it was categorized as fair–excellent. Species abundance is moderate to high which a condition of community between unstable to stable and hardly found dominance of a specific species. While the deep water there were 15 families, 39 generas and 99 species corals. Hard coral cover ranged from 39,5-67,9% it was categorized as fair into good, with high species diversity and abundance of stable and there is no dominant species. Acropora and Porites genus can be found in all locations. Coral reef characteristic associated with the location where the island, the protected island tend to have stable community. Keywords: coral reef, hard coral cover, lifeform

oai:ojs.ejournal.undip.ac.id:article/69281 2025-06-15T08:04:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/69281 2025-06-15T08:04:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 1 (2025): Ilmu Kelautan; 31-42 Satyawan, Noar Muda; Capture Fisheries Program, Marine and Fisheries, Polytechnic of Jembrana Suhery, Noveldesra; Capture Fisheries Program, Marine and Fisheries, Polytechnic of Jembrana Kelana, Perdana Putra; Capture Fisheries Program, Marine and Fisheries, Polytechnic of Dumai Triyono, Heri; Aquatic Resources Management Technology Program, Jakarta Technical University of Fisheries Prasetyo, Ganang Dwi; Fishing Technology Program, Marine and Fisheries, Polytechnic of Kupang Prayitno, Muhamad Riyono Edi; Marine Technology Program, Marine and Fisheries, Polytechnic of Pangandaran Tiku, Mathius; Fishing Technology Program, Jakarta Technical University of Fisheries 2025-03-08 15:58:59 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/69281 Clupeidae; nursery area; spawning area; spawning season en Larva represents the initial phase of a fish’s life after hatching from the egg. Studies on fish larvae aim to provide seasonal information, as well as identify spawning and nursery areas, especially economically important fish species, to support the sustainability of fishery resources. This study aimed to gather information on the abundance, diversity, and distribution of fish larvae in the waters of the Bali Strait. Sampling was carried out from August to November 2024, using a trawl net at five observation stations. The larval samples were preserved with 4% formalin and subsequently identified and counted using a microscope at the Capture Fisheries Laboratory of Marine and Fisheries Polytechnic of Jembrana. This study found 22 families of fish larvae, with abundance ranging from 38 to 433 individuals per 1000 m3. Spatially, the highest abundance was recorded at the Perancak station, followed by Tuwed, Sumbersari, Cupel, and Jimbaran. Temporarily, fish larvae with high abundance were found from September to November. The larval composition was dominated by the families Clupeidae, Gobiidae, Bramidae, and Carangidae. Shannon-Wiener Index (H') of fish larvae ranged from 0.64 to 2.18, indicating that the level of diversity and stability of the community was at a low–moderate level. The highest diversity was found at Tuwed station. The distribution of fish larvae is influenced by oceanographic characteristics, fish behavior, and the availability of natural food sources, such as plankton.

oai:ojs.ejournal.undip.ac.id:article/1954 2017-08-19T22:46:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1954 2017-08-19T22:46:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 3 (2011): Ilmu Kelautan; 119-124 Nurjanah, Nurjanah; Departemen Teknologi Hasil Perairan Fakultas Perikanan dan Ilmu Kelautan IPB Jl. Lingkar Akademik Kampus IPB Darmaga Bogor 16680, Telp 0251 8622915/fax 0251 8622916 Hp 08128488213. Email : inun_thp10@yahoo.com Izzati, Laili; Departemen Teknologi Hasil Perairan Fakultas Perikanan dan Ilmu Kelautan IPB Jl. Lingkar Akademik Kampus IPB Darmaga Bogor 16680, Telp 0251 8622915/fax 0251 8622916 Abdullah, Asadatun; Departemen Teknologi Hasil Perairan Fakultas Perikanan dan Ilmu Kelautan IPB Jl. Lingkar Akademik Kampus IPB Darmaga Bogor 16680, Telp 0251 8622915/fax 0251 8622916 2012-02-17 06:26:18 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1954 id Kerang pisau (Solen spp) merupakan salah satu jenis moluska dari kelas Bivalva yang banyak ditemukan di daerah pantai berlumpur di perairan Kabupaten Pamekasan Madura.Tujuan penelitian adalah menentukan aktivitas antioksidan dan komponen bioaktif yang terkandung dalam kerang pisau. Pengujian yang dilakukan meliputi analisis aktivitas antioksidan dengan metode DPPH, dan uji fitokimia. Kerang pisau memiliki aktivitas antioksidan yang terlihat dari nilai LC50 yang diperoleh. Nilai LC50 dari ekstrak kloroform sebesar 2008,52 ppm, ekstrak etil asetat 1593,87 ppm dan ekstrak metanol 1391,08 ppm. Ekstrak kasar kerang pisau mengandung alkaloid, steroid, dan flavonoid. Kerang pisau dapat dinyatakan sebagai salah satu jenis kerang-kerangan penghasil senyawa antioksidan dan dapat dikembangkan, baik dalam bidang pangan maupun farmasi. &nbsp;Kata kunci:&nbsp; Aktivitas antioksidan, kerang pisau (Solen spp), senyawa bioaktif.&nbsp;Razor clams (Solen spp) were commonly found in muddy Pamekasan waters, Madura. This research was conducted to determine the potential of razor clams as one type of shellfish producing antioxidant compounds. The tests included quantitative test of antioxidant activity by DPPH method, and phytochemical test. Razor clams has antioxidant activity as showed on the LC50 values obtained. LC50 value of chloroform, ethyl acetate, and methanol extract were 2008 2 ppm, 1593,87 ppm and 1391,08 ppm, respectively. The crude extract of razor clams is contained 3 bioactive components in the forms of alkaloids, steroids,and flavonoids. Razor clams can be expressed as one type of shellfish-producing antioxidant compounds and can be developed, both in food and pharmaceutical fields. &nbsp;Key words: antioxidant activity, razor clams (Solen spp), bioactive compound.

oai:ojs.ejournal.undip.ac.id:article/19366 2019-03-26T05:30:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19366 2019-03-26T05:30:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 3 (2002): Jurnal Ilmu Kelautan; 180-186 Sulardiono, Bambang; Jurusan Perikanan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Ario, Raden; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro 2009-03-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19366 en Penelitian inl bertujuan untuk mengetahul beban pencemaran (fisika dan klmia) dan hubungannya dengan kualitas perairan pesisir. Materi yang digunakan adalah ssmpel air dan substrat dasar yang diambil mingguan dari beberapa stasiun yang dipertlmbangan sebagal daereh lingkungan pesislr Kota Semarang yang terkena beban pencemaran. Data kualltas perairan terukur dibandingkan dengan baku mutu lingkungan sebagai Keputusan Menteri Kependudukan dan Lingkungan Hidup (Kep. 02/MENKLH/I/1988). Analisis juga dilakukan terhadap hubungan beban pencemaran dengan kualitas perairannya. Hasil penelitian menunjukkan bahwa parameter kualitas perairan yang melampaui ambang batas baku mutu lingkungan untuk kehidupan organisme adalah kecerehan, BOD, COD, Muatan padatan tersuspensi (MPT), dan H2S . Sedangkan beban pencemaran dan kualitas perairan cenderung pada kondisl tlngkat sedang. Produktivitas perairan tinggi kecuali di muara Sungal Babon, yang diduga dlpengaruhi oleh kegiatan manusia di daerah hulu sungal sepertl kegiatan industrl, pemukiman, dan pelabuhan.Kata kunci: pencemaran; perairan pesisir; Kota Semarang  The increasing development activities in Semarang coastal area such as industrial, urbanisation and agricultural has lead to increasing of westeload into the coastal waters and finally has caused the disturbance of the ecosystem. The aims of the research were to investigate the pollution status based on physical and chemical characteristics of the seawater and the relationship between westeload and Water quality at Semarang coastal area. Sample analysis were done at Ecodevelopment Coastal Laboratory, Jepara. The result showed that the water quality which exceeded the quality threshold according to “Kep.02/MENKLH/I/1988" for the sea organism activities were turbidity, Dissolved/ Particuled Organic Matter (DOM/ POM), COD, BOD. and H2S . The pollution status and water quality on Semarang coastal tended to be at medium level condition. The water productivity was high, except at the canal "Babon" rivers which may be caused by human activities impact such as industrial, urbanisation, and harbour.Keyword: Pollution; coastal waters; Semarang city

oai:ojs.ejournal.undip.ac.id:article/2364 2012-03-04T14:48:48Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2364 2012-03-04T14:48:48Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 2 (2004): Jurnal Ilmu Kelautan; 90-95 Wirasatriya, Anindya; Jurusan Ilmu Kelautan, Universitas Diponegoro, Tembalang-Semarang Telp (024)7474698 Widowati, Ita; Jurusan Ilmu Kelautan, Universitas Diponegoro, Tembalang-Semarang Telp (024)7474698 Hartati, Retno; Jurusan Ilmu Kelautan, Universitas Diponegoro, Tembalang-Semarang Telp (024)7474698 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2364 en Pemeliharaan spat merupakan salah satu kegiatan dalam pembenihan tiram mutiara. Masa peralihan antara larva menjadi spat merupakan masa yang kritis, dimana terjadi perubahan sifat organisme dari planktonis menuju sesil bentik. Pada masa ini kolektor yang sesuai sangat dibutuhkan sebagai tempat penempelan spat. Penelitian pendahuluan menunjukkan bahwa tali polyethilen merupakan bahan kolektor yang cukup baik untuk penempelan tiram mutiara, tetapi belum ada informasi mengenai diameter tali yang digunakan. Penelitian inibertujuan untuk mengetahui diameter tali polyethilen yang terbaik untuk penempelan spat tiram mutiara (Pinctada maxima) ditinjau dari jumlah dan ketahanan spat yang menempel.Penelitian ini bersifat eksperimentaldengan 5 perlakuan. Kolektor tali polyethilen dengan 5 diameter tali yang berbeda yaitu 500mm, 1500mm, 2500mm, 3500mm dan 5000mm disediakan sebagai tempat penempelan spat. Hasil penelitian menunjukkan bahwa diameter tali polyethilen terbaik untuk spat kolektor adalah 500mm dan 1500mm. Pada diameter 500mm, jumlah rata-rata penempelan spat mencapai 134,67 ekor dan persentase rata-rata spat yang terlepas pada uji ketahanan mencapai 8,42 %. Sedangkan pada diameter 1500mm jumlah rata-rata penempelan spat mencapai 138,33 ekor dan persentase rata-rata spat yang terlepas pada uji ketahanan mencapai 9,16%.Kata kunci : Tali PE, Spat Pinctada maxima, Jumlah dan Ketahanan PenempelanMaintaining spat is one of parts done in pearl oyster hatchery . The transition period from larval to spat is a critical period due the change of the planktonic character to the sesile benthic character. In this period, theavailable collector is needed for spat attachment. The formerly reseach showed that polyethilen rope was good enough for spat attachment but there was no information about the diametre that been used. Thepurpose of this research is to know the best diametre of polyethilen rope as collectors of pearl oyster spat (Pinctada maxima) attachment , viewed from the number and strength of spat attachment.The character ofthis research is experimental with 5 treatment. For spats attachment, collectors from polyethilen rope with 5 different diametres were prepared. They were 500mm, 1500mm, 2500mm, 3500mm and 5000mm. The result of the research showed that the best diametre of polyethilen rope for spat collector were 1500mm and 500mm. In 500mm diametre the mean number of spat attachment was 134, 67 and the mean percentage of falling spat in strength test was 8,42 %. In 1500mm diametre the mean number of spat attachment was 138,33 and the mean percentage of falling spat in strength test was 9,16 %.Key words : PE rope, Pinctada maxima Spat, Number and Strength of attachment

oai:ojs.ejournal.undip.ac.id:article/46977 2022-12-05T16:33:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/46977 2022-12-05T16:33:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 3 (2022): Ilmu Kelautan; 189-198 Susanti, Feni; Lab. Aquatic Resources Management, Department of Fisheries, Faculty Agriculture, Universitas Gadjah Mada Adharini, Ratih Ida; Lab. Aquatic Resources Management, Department of Fisheries, Faculty Agriculture, Universitas Gadjah Mada Rahmi, Kurnia; Lab. Aquatic Resources Management, Department of Fisheries, Faculty Agriculture, Universitas Gadjah Mada Kartikasari, Dini; Lab. Aquatic Resources Management, Department of Fisheries, Faculty Agriculture, Universitas Gadjah Mada Kandasamy, Ganesan; Department of Botany, Ayya Nadar Janaki Ammal College (Autunomous) 2022-09-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/46977 COI; words; DNA barcoding; seaweed; mtDNA en Seaweed is one of the most abundant biological resources in Indonesia. The number of species of Gracilaria spp. in Indonesia encourages the need for studies on diversity. This study aims to identify species diversity and phylogeny analysis of Gracilaria spp. found in Gunungkidul Regency, Yogyakarta. The sample collection was taken in February 2020 at Sepanjang and Krakal Beaches and in September 2020 at Siung and Watukodok Beaches, Gunungkidul, Yogyakarta. This research uses the methods of sample preservation, DNA isolation/extraction, DNA amplification, and COI mtDNA gene sequencing. Molecular identification of Gracilaria spp. successfully performed by DNA barcoding method using a commercial kit (Genaeid Genomic DNA Mini Kit (Plant)). Gracilaria spp. successfully amplified with primers GazF1 and GazR1 encoding the mtDNA COI gene at annealing temperature of 44°C; 44.4°C and 44.6°C. Species Gracilaria spp. that found were G. salicornia (from Sepanjang and Krakal Beach), G. edulis (from Siung Beach), G. arcuata (from Watu Kodok Beach) and Gracilaria sp. (from Krakal Beach). The species of the Krakal Beach specimen of Gracilaria sp. is unknown, however it belongs to the genus Gracilaria, so further identification of the sample is needed. G. arcuata (from Watu Kodok Beach) is recognized as a species of G. arcuata, however it is 12.8 percent genetically distant from the source. Genetic diversity on the Sepanjang, Krakal, and Watu Kodok beaches is included in the high diversity category, while Siung Beach does not have diversity. This research found four species of Gracilaria spp. based on molecular identification in Gunungkidul, Yogyakarta.

oai:ojs.ejournal.undip.ac.id:article/549 2020-10-25T22:31:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/549 2020-10-25T22:31:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 2 (2008): Jurnal Ilmu Kelautan; 103-112 Kusumah, Hadi 2010-11-12 11:26:54 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/549 id Penelitian telah&nbsp;dilaksanakan&nbsp;di&nbsp;Laut Jawa&nbsp;antara&nbsp;perairan utara Jawa Tengah dan perairan selatan&nbsp;Kalimantan Tengah pada bulan November&nbsp;2004 dengan menggunakan KR. Barunajaya VIII. Tujuan&nbsp;penelitian mempelajari&nbsp;parameter fisika dan kandungan khlorofil-a di&nbsp;Laut Jawa. Current meter ADCP telah digunakan&nbsp;untuk mengukur&nbsp;arus dan CTD91 1pls&nbsp;digunakan untukmengukur&nbsp;parameter&nbsp;massa&nbsp;air suhu,&nbsp;salinitas,&nbsp;transmisi cahaya dan&nbsp;khorofil-a. Hasil yang didapatkan bahwa suhu disepanjang&nbsp;pantai utara Jawa Tengah&nbsp;mempunyaisuhu lebih&nbsp;panas dibandingkan&nbsp;dengan&nbsp;suhu sebelah selatan Pulau&nbsp;Kalimantan&nbsp;dan suhu terendah diperoleh di tengah&nbsp;Laut Jawa karena adanya pengaruh dari masa air Laut&nbsp;Flores. Salinitas&nbsp;terendahdiperoleh&nbsp;dipantai utara Jawa Tengah dan sebelah selatan Pulau Kalimantan dibandingkandengan&nbsp;salinitas maksimum didapatkan di tengan&nbsp;Laut Jawa karena adanya pengaruh darimasa&nbsp;air Laut Flores.&nbsp;Transmisi&nbsp;cahaya disebelah pantai utara Jawa&nbsp;Tengah dan selatan Pulau Kalimantan lebih keruh karena&nbsp;adanya&nbsp;pengaruh&nbsp;daratan.&nbsp;Sebaliknya transmisi cahaya&nbsp;yang tinggi diperoleh di tengah Laut&nbsp;Jawa.&nbsp;Klorofil-a di&nbsp;perairan pantai utara dan&nbsp;dekat&nbsp;dasar&nbsp;Jawa Tengah&nbsp;dan sebelah&nbsp;selatan&nbsp;Pulau Kalimantan&nbsp;relatif&nbsp;lebih tinggi dibandingkan dengan&nbsp;di tengah&nbsp;laut dan bagian&nbsp;permukaan. Ada tiga koloni&nbsp;group&nbsp;yang nyata keterkaitan antara salinitas,&nbsp;suhu, transmisi&nbsp;cahaya, kedalaman&nbsp;dengan kandungan klorofil-a.Kata kunci:&nbsp;salinitas, klorofil-a, Laut Jawa

oai:ojs.ejournal.undip.ac.id:article/10053 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/10053 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 4 (2015): Ilmu Kelautan; 195-206 Pringgenies, Delianis; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Jumiati, Masnah; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Ridho, Ali; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro 2015-12-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/10053 id Terjadinya resistensi antibiotik menjadi permasalahan dalam dunia kesehatan. Peningkatan kemampuan patogen dalam menahan efek obat menyebabkan timbulnya resistensi. Beberapa bakteri patogen pada manusia dilaporkan telah mengalami resistensi terhadap lebih dari satu kelas antibiotik. Untuk mengatasi permasalahan tersebut, maka perlu dilakukan pencarian senyawa antibiotik baru yang lebih efektif dalam mengatasi permasalahan bakteri Multi-drug Resistant (MDR). Metabolit sekunder yang diproduksi oleh invertebrata laut  mempunyai prospek sebagai bahan obat dari laut. Nudibranch diduga mampu menghasilkan metabolit sekunder sebagai mekanisme pertahanan diri. Tujuan dari penelitian ini adalah untuk mengetahui fraksi dari ekstrak nudibranch Jorunna funebris yang menunjukkan bioaktivitas terhadap bakteri Multi-drug Resistant (MDR). Proses ekstraksi dilakukan dengan metode maserasi. Fraksinasi dengan Kromatografi Kolom Terbuka (KKT). Uji aktivitas antibakteri menggunakan metode difusi agar. Analisis komponen senyawa dengan GC-MS. Hasil penelitian menunjukkan bahwa 8 fraksi ekstrak nudibranch J. funebris menunjukkan aktivitas antibakteri. Hasil uji aktivitas menunjukkan fraksi I paling aktif terhadap 5 bakteri uji yaitu Klebsiella, Pseudomonas, Escherichia coli, Enterobacter 5 dan Enterobacter 10 dengan rata-rata zona hambatan secara berurutan sebesar 12,78 mm; 12,51 mm; 15,47 mm; 14,09 mm dan 12,46 mm. Fraksi II paling aktif terhadap bakteri Coagulase Negative Staphylococcus dengan rata-rata zona hambatan sebesar 12,70 mm. Analisis GC-MS menunjukkan bahwa dalam fraksi II terdapat senyawa 1-oktadekanol yang berpotensi sebagai antibakteri. Kata kunci : nudibranch, Jorunna funebris, antibakteri, multi-drug resistant, 1-oktadekanol Emergence of antibiotic resistance become a problems on medical world. Increasing pathogen ability to hold the antibiotic effect caused resistance. Several human-patogen bacteria were resistance to one or more classes of antibiotics. To solve those problems, it is necessary to search new antibiotic compounds that more effective to solve the problem of Multi-drug Resistant (MDR). The secondary metabolite produced by marine invertebrates have prospect as a marine biomedical. Nudibranch may produce the secondary metabolite as chemical defense mechanism. The purpose of the research was to obtain fraction from extract nudibranch Jorunna funebris that capable of bioactivity for Multi-drug Resistant (MDR) bacteria. Extraction process was conducted with maceration method. Crude extracts were fractionated by Open Column Chromatography. Antibacterial activity test was done using disk diffusion method. Chemical compounds were analyzed with GC-MS. The result showed that 8 fractions of nudibranch J. funebris extract showed antibacterial activity. Activity test showed fraction I has ability to inhibit Klebsiella, Pseudomonas, Escherichia coli, Enterobacter 5 and Enterobacter 10 with average value of inhibitory zone was 12,78 mm; 12,51 mm; 15,47 mm; 14,09 mm and 12,46 mm. Fraction II has ability to inhibit Coagulase Negative Staphylococcus with mean inhibitory zone was 12,70 mm. GC-MS analyses showed 1-octadecanol from fraction II, that capable as antibacterial compound. Key words: nudibranch, Jorunna funebris, antibacterial, multi-drug resistant, 1-octadecanol

oai:ojs.ejournal.undip.ac.id:article/71187 2025-12-21T07:49:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/71187 2025-12-21T07:49:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 3 (2025): Ilmu Kelautan; 382-394 Sharif, Hamad Maalim; Institute of Oceanography and Environment, Universiti Malaysia Terengganu Zanzibar Fisheries and Marine Resources Research Institute|Tanzania Minhat, Fatin Izzati; Faculty of Science and Marine Environment, Universiti Malaysia Terengganu Yunus, Kamaruzzaman; Department of Marine Science, Kulliyah of Science, International Islamic University Malaysia Naim, Erick; Graduate School of Environmental Science, Hokkaido University Shaari, Hasrizal; Institute of Oceanography and Environment, Universiti Malaysia Terengganu Faculty of Science and Marine Environment, Universiti Malaysia Terengganu 2025-09-10 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/71187 South China Sea; Sunda shelf; Tropical; Sea level; Biogenic Silica; Calcium Carbonate en The Holocene epoch was marked by significant climatic fluctuations that shaped marine productivity across tropical coasts. This study reconstructs Holocene paleoproductivity along the East Coast of Peninsular Malaysia, specifically Terengganu (TER16-GC13C) and Kelantan waters (KELC17) using core sediments. A multi-proxy approach was applied, analysing biogenic silica (BSi), total organic carbon (TOC), calcium carbonate (CaCO₃), and elemental ratios (Ca/Al, Ca/Fe, Ba/Al) to evaluate changes in productivity in response to sea-level and monsoonal variability. Results indicate distinct temporal patterns: the early Holocene showed elevated BSi and TOC linked to enhanced nutrient influx during rapid sea-level rise. While the mid-Holocene exhibited reduced carbonate deposition due to strong terrigenous input associated with the East Asian Summer Monsoon and the late Holocene was marked by increased CaCO₃ deposition reflecting reduced riverine input and greater biogenic production during sea-level highstand decline. Elemental ratios corroborate these shifts, highlighting the dynamic interplay between terrigenous and marine sources.These findings demonstrate that sea-level change was a dominant driver of productivity variations, modulated by monsoonal strength. The strong correlation between terrigenous proxies and grain size underlines the role of hydrodynamics in sediment delivery. This study contributes an integrated Holocene paleoproductivity reconstruction for East Coast Peninsular Malaysia, providing a regional baseline that complements South China Sea records. The results enhance understanding of tropical shelf ecosystem sensitivity to climate variability, offering a reference framework for assessing future climate change impacts on coastal productivity. 

oai:ojs.ejournal.undip.ac.id:article/633 2012-02-28T08:33:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/633 2012-02-28T08:33:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 2 (2007): Jurnal Ilmu Kelautan; 93-96 Pramest, Rini Nirwani, Nirwani 2012-02-28 15:01:50 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/633 Penelitlan tentang organ reproduksi baik secara morfblogi dan anatomi G. gigas khususnya pada fase karposporofit sangat penting untuk dilakukan, mengingat bahwa jenis rumput laut ini bernilai ekonomis tinggi. Penelitian ini bertujuan untuk mengetahui struktur organ reproduksi baik secara morfologi maupun anatomi pada Fasekarposporofit dari rumput laut G. gigas. Hasil penelitian menunjukkan bahwa secara morfologi organ reproduksi G. gigas pada fase karposporofit dapat terlihat jelas tanpa alat karena sistokarp yang berupa bintil/tonjolan menyebar di permukaan talus. Sedangkan secara anatomi ditemukan dalam satu talus terdapat sistokarp yang matang dan ada yang masih muda. Hal ini berkaitan dengan letak dan diameter sistokarp serta tingkat kematangan karpospora.Kutakunci : karposporofit, karpospora, sistokarp

oai:ojs.ejournal.undip.ac.id:article/22158 2021-10-13T01:07:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/22158 2021-10-13T01:07:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 3 (2019): Ilmu Kelautan; 146-152 Mulyaningrum, Sri Redjeki Hesti; Research Institute for Coastal Aquaculture and Fisheries Extension Suwoyo, Hidayat Suryanto; Research Institute for Coastal Aquaculture and Fisheries Extension Paena, Mudian; Research Institute for Coastal Aquaculture and Fisheries Extension Tampangallo, Bunga Rante; Research Institute for Coastal Aquaculture and Fisheries Extension 2019-09-04 16:17:01 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/22158 epiphyte; cultivation; K. alvarezii; carrageenan Research Institute for Coastal Aquaculture and Fisheries Extension en Kappaphycus alvarezii which is widely cultivated at sea is susceptible to other algae that drift away and attach as epiphyte. This study aims to identify epiphyte on seaweed farming K. alvarezii and its effect on carrageenan quality. The study was conducted on K. alvarezii seaweed farming area in Jeneponto, South Sulawesi. Sample of epiphyte was obtained from four stations. Epiphyte was identified in laboratory based on its morphological characteristics and calculated its density. Carrageenan yield and gel strength of healthy seaweed and those infected one were analyzed in laboratory in triplicates for each sample. Data were statistically analyzed using independent samples t-test analysis. Present study showed that there were 6 epiphytes species on the seaweed farming area, namely: Entheromorpha intestinalis, Ceramium sp., Neosiphonia apiculata, Chaetomorpha crassa, Hypnea sp., and Gracilaria sp. The average of epiphytic density in cultivation area was (24.26±9.64)%. Healthy seaweed and infected one had significantly different carrageenan yield and gel strength (P&lt;0.05). Healthy seaweed had higher carrageenan yield (48.17±1.62)% and gel strength (1130.76±8.42) g cm-² than infected seaweed which had carrageenan yield (42.47±0.23)% and gel strength (958.22±10.85) g cm-².

oai:ojs.ejournal.undip.ac.id:article/4693 2017-08-19T22:45:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/4693 2017-08-19T22:45:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 3 (2012): Ilmu Kelautan; 154-163 Adrim, Muhammad; Pusat Penelitian Oseanografi – LIPI, Jln. Pasir Putih 1, Ancol Timur, Jakarta Utara 1048, Harahap, Syawaludin Alisyahbana; Fakultas Perikanan dan Ilmu Kelautan-UNPAD, Kampus Jatinangor, Jalan Raya Bandung-Sumedang Km. 21, Jawa Barat-UBR 40600 Wibowo, Kunto; Pusat Penelitian Oseanografi – LIPI, Jln. Pasir Putih 1, Ancol Timur, Jakarta Utara 1048. 2012-09-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/4693 en Keberadaan ikan karang merupakan salah satu bioindikator terhadap kondisi terumbu karang yang baik. Penelitian ikan karang di perairan Kendari bertujuan untuk mengetahui komposisi jenis, kelimpahan, sebaran, dan struktur komunitas ikan karang di perairan tersebut. Pengumpulan data dilakukan bulan Juli 2011 pada lima lokasi di bagian utara dan selatan Kendari. Data dihimpun dengan menggunakan teknik Underwater Visual Census (UVC) dan metode transek (Line Intersept Transect, LIT) dengan peralatan SCUBA. Total jenis ikan karang terkumpul sebanyak 111 jenis yang mewakili 24 famili, terdiri dari 31 jenis ikan target (ikan konsumsi), 17 jenis ikan indikator (indicator species), dan kelompok major 63 jenis. Kelornpok ikan pangan (target) yang dominan; Caesio cuning, Siganus vulpinus dan Ctenochaetus striatus. Jenis yang paling dominan dari ikan indikator adalah Chaetodon octofasciatus. Sedangkan kelompok lainnya (major yang dominan) adalah Pomacentrus smithii, Chrysiptera rollandi, Chrysiptera springeri, dan Pomacentrus alexanderae. Nilai Indeks keanekaragaman berkisar 1,36– 3,23. Indeks dominasi Margalef (d) berkisar 4,74–8,66. Indeks kemerataan Pielou (J’=H’/logeS) diperololeh pada kisaran 0,38–0,81 . Hasil analisis kluster pada matrik kesamaan Bray-Curtis 37 % diperoleh dendrograrn yang menunjukkan dua pengelompokan stasiun. Berdasarkan ordinasi sampel dengan MDS diperoleh dari kesamaan (stress= 0) dengan jelas menunjukkan dua komunitas yang berbeda. Hasil penelitian ini diharapkan dapat menjadi masukan sebagai data dasar untuk pengelolaan daerah pesisir bagi pemerintahan daerah (PEMDA).Kata kunci: ikan karang, struktur komunitas, indeks ekologi, perairan Kendari.Coral reef Fishes is one of bio-indicators for good condition coral reef ecosystem. A study on coral reef fishes in the Kendari waters was aimed to find out species composition, abundance, distribution and community structure of coral reef fishes in that area. The study was conducted in July 2011 at five locations on the northern and southern part of Kendari waters. Data were gathered using SCUBA with underwater visual census (UVC) and line transect (Line Intersept Transect, LIT methods). A total of 111 species of 24 families of coral reef fishes were gathered, consisted of  31 species of target fishes, 17 indicator species and 63 species of major group fishes. The target fishes were dominated by Caesio cuning, Siganus vulpinus and Ctenochaetus striatus. Indicator species was dominated by Chaetodon octofasciatus and major group fishes were dominated by Pomacentrus smithii, Chrysiptera rollandi, Chrysiptera springeri, and Pomacentrus alexandera.The Shannon-Wiener diversity indices were ranged between 1.36 and 3.23, the Margalefs index of richness ranged from 4.74 and 8,66 while Evenness indices of Pielou were ranged from 0.38 to 0.81. The cluster analysis of Bray Curtis index of simmilarity showed two groups on the dendogram at 37% similarity level, while the multidimensional similarity analysis (stress = 0) was also shown two different communities. The result of the study could be useful to baseline data to coastal management area to local government authority (PEMDA).Key words: coral reef fish, community structure, ecology index, Kendari waters

oai:ojs.ejournal.undip.ac.id:article/51137 2023-11-03T06:35:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/51137 2023-11-03T06:35:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 2 (2023): Ilmu Kelautan; 148-160 Rozirwan, Rozirwan; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Muhtadi, Muhtadi; Environmental Management Study Program, Graduate Program, Sriwijaya University Ulqodry, Tengku Zia; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Nugroho, Redho Yoga; Environmental Management Study Program, Graduate Program, Sriwijaya University Khotimah, Nadila Nur; Environmental Management Study Program, Graduate Program, Sriwijaya University Fauziyah, Fauziyah; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Putri, Wike Ayu Eka; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Aryawati, Riris; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Mohamed, Che Abd Rahim; Faculty of Science and Technology, Universiti Kebangsaan Malaysia 2023-06-09 15:44:51 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/51137 Insecticidal; Mangrove; Phytochemical; Toxicity en Toxic bioactive compounds can be obtained from various mangrove plants that have the potential to be developed in agriculture as bioinsecticides. The coast of South Sumatra has relatively abundant Avicennia marina and Excoecaria agallocha vegetation. This study was conducted to analyze the bioactivity of insecticides and the phytochemical profiles of mangrove leaves A. marina and E. agallocha was extracted with methanol, ethyl acetate, and n-hexane from the most toxic extract fraction. Samples were obtained from the Barong River in Sembilang National Park, Banyuasin Regency. The insecticidal activity of the samples was carried out on Gryllus bimaculatus and Tenebrio molitor. Furthermore, the phytochemical profile was analyzed using GC-MS. Based on the results of insecticidal activity on G. bimaculatus, the respective LC50 values of A. marina and E. agallocha extracts for the hexane fraction were 12,562 mg.L-1 and 15,464 mg.L-1, ethyl acetate 9,986 mg.L-1 and 10,292 mg.L-1, methanol 6,454 mg.L-1 and 6,969 mg.L-1. Whereas in T. molitor, the LC50 values for the hexane fraction were 10,682 mg.L-1 and 11,070 mg.L-1, ethyl acetate 9,065 mg.L-1 and 9,269 mg.L-1, methanol 4,799 mg.L-1, and 5,408 mg.L-1. The results of GC-MS analysis on the methanol extract of A. marina leaves which contained phytochemical compounds such as alcohol, lauric acid, myristic, linoleic, elaidate, stearate, endogenous, olead, phthalic ester, and siloxane. Based on the insecticide toxicity category, the insecticidal activity of both A. marina and E. agallocha leaves extracts were low and non-toxic. Further research is needed regarding variations in anti-insecticide of mangrove extract measurements in the future studies.

oai:ojs.ejournal.undip.ac.id:article/2185 2014-07-10T17:03:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2185 2014-07-10T17:03:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 4 (2006): Jurnal Ilmu Kelautan; 181-192 Khouw, Abraham Samuel; Faculty of Fisheries and Marine Sciences, Pattimura University, Ambon – Indonesia, Phone: 0911-351727, HP: 081343044295, E-mail: askhouw@yahoo.com Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2185 en Distribusi, kelimpahan, dan biomassa dari limpet C. testudinaria digambarkan secara terpisah untuk zona pantai bagian atas, tengah, dan bawah. Total 2402 ekor limpet diperoleh selama 12 bulan (dari Oktober 2001 sampai 2002). Rata-rata densitas adalah 11.12 &plusmn; 4.51 ind.m-2. Densitas tertinggi berada pada zona atas dan tengah daripada zona bawah. Analisa varian menunjukkan perbedaan nyata antar zona, bulan, dan interaksi zona-bulan. Pola penyebaran limpet adalah berkelompok. Rata-rata biomass tahunan diestimasi sebesar 1013&plusmn; 748 mg AFDW.m-2 (21.8 kJ.m-2). Biomassa tertinggi 3236 mg AFDW.m-2 atau 69.9 kJ.m-2 ditemukan pada bulan September 2002, sementara terrendah pada bulan Maret 2002 sebesar 544 mg AFDW.m-2 atau 11.7 kJ.m-2. Rata-rata biomassa pada musim hujan 619 mg AFDW.m-2 atau 13.4 kJ.m-2 lebih rendah dibandingkan pada musim kemarau yakni 899 mg AFDW.m-2 atau 19.4 kJ.m-2.Kata kunci: Limpet, Cellana testudinaria, distribusi, kelimpahan, biomassa&nbsp;The distribution, abundance, and biomass of the tropical limpet C. testudinaria are described separately for the high, middle and low shore levels. A total of 2402 limpets were obtained in 12 monthly collections (from October 2001 to September 2002). The mean density over the whole period was 11.12 &plusmn; 4.51 ind.m-2. The density tended to be higher at the high (15.79 &plusmn; 7.54 ind.m-2) and the middle (14.67 &plusmn; 13.99 ind.m-2) than at the low shore level (2.90 &plusmn; 2.44 ind.m-2). Analysis of variance showed significant density differences among shore levels, months, as well as a significant interaction between shore levels and months. The smallscale dispersion patterns did not show any seasonal variability. They were strongly clumped throughout the year and at each shore level. The mean annual population biomass was estimated to be 1013 &plusmn; 748 mg AFDW.m-2 (21.8 kJ.m-2). The highest biomass (3236 mg AFDW.m-2 or 69.9 kJ.m-2) occurred in September 2002, whilst the lowest (544 mg AFDW.m-2 or 11.7 kJ.m-2) was in March 2002. The monthly mean biomass (619 mg AFDW.m-2 or 13.4 kJ.m-2) of the rainy season was lower than that (899 mg AFDW.m-2 or 19.4 kJ.m-2) of the dry season.Key words: Limpet, Cellana testudinaria, distribution, abundance, biomass

oai:ojs.ejournal.undip.ac.id:article/10504 2021-10-13T06:11:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/10504 2021-10-13T06:11:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 1 (2017): Ilmu Kelautan; 31-39 Aryawati, Riris; Sriwijaya University Bengen, Dietriech G.; Marine Sciences Department, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University Prartono, Tri; Marine Sciences Department, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University Zulkifli, Hilda; Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University 2017-03-01 04:24:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/10504 en Phytoplankton in the ocean has an important role in forming the base of food chain,  responsible in primary production. Its abundance and number of phytoplankton species will indirectly affect the level of water’s fertility. This study aimed to determine the presence of phytoplankton as bio-indicators of water quality in terms of abundance, diversity index, uniformity index, and saprobic coefficient in coastal waters of South Sumatera. The study was conducted on May 2013 - February 2014, at ten stations during high and low tides. Phytoplankton samples were taken vertically using plankton nets,  cone-shaped with a diameter of 30 cm, length 100 cm and mesh size 30 μm. The study found 41 genera of phytoplankton, consisted of family Bacillariophyceae (26 genera), Dinophyceae (7 genera) Cyanophyceae (7 genera) and Chlorophyceae (1 genus). The highest number of genera was recorded while low tides in November (24 genera), and the lowest was on May while high tides (16 genera). The highest abundance of phytoplankton was recorded in August during high tides (2,68 x 107 cell.m-3), and the lowest was in May during high tides (6,59 x 105cell.m-3). The diversity index (H'),  the uniformity index (E), and the dominance index (D) ranged between 0,64–3; 0,15–0,71 and 0,15–0,83 respectively.  Keywords: phytoplankton, abundance, diversity index, South Sumatera coast.

oai:ojs.ejournal.undip.ac.id:article/2278 2017-08-19T22:46:16Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2278 2017-08-19T22:46:16Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 4 (2011): Ilmu Kelautan; 229-235 Sarjito, Sarjito; Program Studi Budidaya Perairan, Jurusan Perikanan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Jl. Prof. Soedarto, Kampus UNDIP Tembalang, Semarang. Telp./Fax. 0247474698 email : sarjito_msdp@yahoo.com Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2278 en Ikan Kerapu Bebek (Cromileptis altivelis) sakit diperoleh dari keramba jaring apung di Karimunjawa. Penelitian ini bertujuan untuk mengkaji causative agent utama vibriosis pada ikan kerapu bebek &nbsp;(C. altivelis) dari &nbsp;karamba jaring apung di perairan Karimun Jawa. &nbsp;Sebanyak tujuh isolat vibrio diisolasi dari bagian luka maupun ginjal kerapu bebek sakit yang menunjukkan gejala vibriosis. &nbsp;Hasil uji postulat koch dan pathogenisitasnya dari enam isolat,&nbsp; diperoleh bahwa tiga isolat (isolat&nbsp; JT 07; JT 10 dan JT 20 ) yang mengakibatkan 100% dan merupakan agensia penyebab utama vibriosis pada ikan Kerapu Bebek . Oleh karena itu,&nbsp; pada penelitian ini hanya tiga isolat ini yang akan dilakukan uji selanjutnya. Teknik&nbsp; molekuler gen 16S rDNA (amplifikasi 16S DNA ribosom) digunakan untuk karakterisasi ketiga causative agent utama secara komprehensif. Berdasarkan analisis sekuen gen 16S rDNA, data menunjukkan bahwa isolat JT 07 memiliki kekerabatan terdekat dengan Vibrio olivaceus (99%); isolat JT 10 dengan&nbsp; V. damsella (99%) &nbsp;dan isolat JT 20&nbsp; dengan &nbsp;V. alginolyticus&nbsp; (98%).&nbsp;Kata kunci: &nbsp;causative agent, Vibriosis, &nbsp;molekuler,&nbsp; Kerapu bebekMoribound Humpbeck Grouper fish (Cromileptis altivelis) was taken from the cages of Karimunjawa. The research aim was to find out the main causative agent of vibriosis on humpbeck grouper (C. altivelis)&nbsp; from Karimunjawa waters. Seven&nbsp; isolates of Vibrio were isolated from external wound and kidney of the humpbeck grouper fish (C. altivelis) which showed the clinical signs of vibriosis. Based on the koch postulate and pathogenecity test results indicated that three vibrios &nbsp;(isolate JT 07; JT 10 and JT 20 ) act as a main causative agents of vibriosis which caused mortality of&nbsp; 100% to E. fuscogutatus.&nbsp; Because of highest mortality as pathogenicity indicator, the three isolates were continued to investigate. A complementary molecular techniques of 16S rDNA genes (amplified 16S ribosomal DNA) was used to give a comprehensive characterization of these isolates.&nbsp; On the basis of the results of sequen analysis, our data showed that JT 07; JT 10 and JT 20 isolates were closely related to Vibrio olivaceus (99.0%); V. damsella (99%)&nbsp; and&nbsp; V. alginolyticus&nbsp; (98%) respectively.. Key Words : Causative agent, Vibriosis, molecular,&nbsp; humpbeck grouper &nbsp;

oai:ojs.ejournal.undip.ac.id:article/7070 2017-08-19T22:44:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7070 2017-08-19T22:44:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 2 (2013): Ilmu Kelautan; 79-83 Satrioajie, W. Nugroho; UPT. Balai Konservasi Biota Laut, Lembaga Ilmu Pengetahuan Indonesia Jl. Y Syaranamual Guru-guru, Poka Ambon, Indonesia. 97233 Anggoro, Sutrisno; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Jl. Prof. Soedarto, S.H. Tembalang, Semarang, Indonesia. 50275 Irwani, Irwani; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Jl. Prof. Soedarto, S.H. Tembalang, Semarang, Indonesia. 50275 2013-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7070 en Salah satu spesies dalam genus Anadara yang dimanfaatkan sebagai sumber bahan pangan alternatif adalah Anadara pilula. Pengetahuan mengenai biologi jenis kerang ini sangat terbatas karena kurang populer dibandingkan dengan A. granosa. Penelitian ini bertujuan untuk menganalisis karakteristik morfometri, biometri dan pertumbuhan kerang bulu A. pilula. Sampel kerang bulu diperoleh di perairan Kota Tegal. Pengukuran panjang, tebal, dan tinggi cangkang serta berat total kerang dilakukan dengan menggunakan jangka sorong. Sedangkan berat kerang diukur dengan timbangan elektronik. Hasil penelitian menunjukkan antar dimensi (panjang, tebal, dan tinggi) cangkang mempunyai hubungan yang erat (r≥0,8) dengan pertumbuhan panjang cangkang lebih mendominasi, diikuti pertumbuhan tebal kemudian tinggi cangkang. Sifat pertumbuhan demikian menyebabkan bentuk cangkang A. pilula hampir membulat. Kondisi yang sama juga ditemukan pada hubungan antara dimensi cangkang dengan berat total yang bersifat alometri negatif (b&lt;3), dimana pertumbuhan linier cangkang lebih cepat dari pada pertambahan berat A. pilula. Hasil ini berpengaruh terhadap faktor kondisi kerang dan dapat digunakan untuk menentukan ukuran terbaik dalam memanfaatkan kerang ini. Kata kunci: Anadara pilula, morfometri, biometri, pertumbuhan One of species in genus Anadara which is used as food alternative resources is Anadara pilula (Reeve, 1843). The knowledge of this species is very limited because it has not been well studied than A. granosa (Linnaeus, 1758). This research aims to analyse characteristic of morphometric, biometric and growth of A. pilula from Tegal waters.  Measurement of length, thick and height of shells as well as total weight of cockle were measured from December 2009 to February 2010. The result showed that there was strong correlation ((r≥0,8) in the dimensions of the cockle shells, the growth of shells length was more dominant than thick and height. This phenomenon cause the form of A. pilula is nearly circular. There were relationship between dimensions of cockle shells with total weight (alometri negative, b&lt;3) which was meant that growth of cockle shells is faster than weight and influenced the condition factor of cockles. This also can be used in determining the best of harvest size. Keywords: Anadara pilula, morphometric, biometric, growth characteristic

oai:ojs.ejournal.undip.ac.id:article/56707 2024-10-04T07:32:43Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/56707 2024-10-04T07:32:43Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 2 (2024): Ilmu Kelautan; 181-190 Purnawan, Syahrul; Laboratory of Marine Acoustics, Faculty of Marine and Fisheries, Universitas Syiah Kuala Marine Technology Study Program, Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, IPB University Manik, Henry M.; Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, IPB University Manik, Agustina Sartika; Marine Technology Study Program, Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, IPB University Elson, La; Marine Technology Study Program, Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, IPB University Kang, Myounghee; Department of Maritime Police and Production System, Institute of Marine Industry, Gyeongsang National University 2024-06-20 23:50:41 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/56707 Lancang Island; fisheries Acoustic; single beam; Echo integration; TSc; Simrad EK15 en Sound propagates effectively through the water column, establishing hydroacoustic technology as a premier method for underwater exploration, including the mapping of aquatic ecological resources. While the fisheries sector is considered pivotal in aquatic resource studies, mapping fisheries remains challenging due to the distinct distribution patterns exhibited by fish within the water column, which are intricately linked to their habitat preferences. In this study, the hydroacoustic method was employed to analyze the distribution of fish in the waters surrounding Lancang Island, Seribu Islands, Jakarta.  This analysis utilized the target strength (TS) value alongside oceanographic parameters. Acoustic data was collected using a 200 kHz single beam echosounder based on parallel transects encircling the waters of Lancang Island. CTD was utilized to collect oceanographic data to acquire temperature and salinity profiles within the water column. The acoustic data processing was conducted using the post-processing software SONAR 5-pro. The analysis was performed based on acoustic cells, obtained by dividing segments every 100 m horizontally and layers every 5 m vertically, thereby obtaining the Target Strength per cell (TSc) and volume backscattering strength (SV) values from each cell. The results showed that the highest average TSc value was found in the depth range of 26-31 m at -46.98 dB, and the highest SED biomass was also found in the same depth range at 26.6 kg.ha-1. Based on the analysis of water temperature and salinity, it was found that these factors significantly influence the distribution of fish in the waters of Lancang Island (R-square= 0.1276 and P&lt; 0.05). This finding also indicates the presence of other parameters affecting fish distribution in Lancang waters, with the type of substrate and habitat emerging as potential determining factors, notably in coral reef environments.  

oai:ojs.ejournal.undip.ac.id:article/1616 2012-02-17T22:38:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1616 2012-02-17T22:38:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 3 (2009): Jurnal Ilmu Kelautan; 160-163 Purnama Fitri, Aristi Dian; Jurusan Perikanan, FPIK Universitas Diponegoro, Jl. Hayam Wuruk 4A Semarang-50241. Telp-Fax. (024)8313759, (024)8311525 aristi_dian@undip.ac.id ; asrining@yahoo.com Asriyanto, Asriyanto; Jurusan Perikanan, FPIK Universitas Diponegoro, Jl. Hayam Wuruk 4A Semarang-50241. Telp-Fax. (024)8313759, (024)8311525 aristi_dian@undip.ac.id ; asrining@yahoo.com Sutanto, Heri; Jurusan Fisika, Fak. MIPA-Universitas Diponegoro, Kampus FMIPA Jl. Prof. Soedarto, Tembalang Semarang. Telp-Fax. 08156648670, (024)7460039 Email : herisutanto@undip.ac.id 2012-02-05 20:33:19 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1616 id Kerapu macan (Epinephelus fuscoguttatus) memproduksi suara selama melakukan berbagai aktivitas termasuk pada saat makan. Penelitian lebih mendalam untuk mengetahui apakah E. fuscoguttatus dapat merespons frekuensi suara disekelilingnya, belum pernah dilakukan. Tujuan penelitian adalah mengetahui karakteristik frekuensi suara E. fuscoguttatus dan mengetahui pola tingkah lakunya ketika mendeteksi sumber suara. Metode penelitian adalah eksperimental laboratories, dengan tahapan penelitian adalah mengetahui frekuensi dan intensitas suara E. fuscoguttatus saat makan, serta mengetahui pola tingkah laku E. fuscoguttatus saat adanya sumber suara. Acoustic behaviour&nbsp; yang dihasilkan E. fuscoguttatus ketika makan adalah berkisar 16-32 Hz (58,9 dB) pada ratarata panjang total tubuh 100 mm dan berkisar 16-128 Hz (55,8 dB) dengan rata-rata panjang total tubuh 250 mm. Tidak adanya gelembung renang dan garis gurat sisi yang tidak terlihat jelas, menyebabkan E. fuscoguttatus tidak merespons sumber suara yang diberikan (sebagai atraktor) skala laboratorium. Kata kunci : Kerapu macan (Epinephelus fuscoguttatus), Acoustic behaviour &nbsp;&nbsp; Grouper (Epinephelus fuscoguttatus) produced sound when conducting some activities including feeding. The objective of research was to determine the sound frequency characteristic of E. fuscoguttatus and to investigate known the behavior pattern when the fish detects source of sound. The method of research was experiment laboratories, with research step was known frequency and intensity of sound E. fuscoguttatus when feeding activity, and known behavior pattern E. fuscoguttatus when detecting of source of sound.&nbsp; Acoustic behaviour&nbsp; E. fuscoguttatus when feeding was range from 16-32 Hz (58.9 dB) at average on 100 mm TL and range from&nbsp; 16-128 Hz (55.8 dB) with average on 250 mm. E. fuscoguttatus didn&rsquo;t had swim bladder and linea lateralis not distinct, caused E. fuscoguttatus didn&rsquo;t response with&nbsp; source sound (as attractor) in a&nbsp; laboratory scale. Key words : Epinephelus fuscoguttatus, Acoustic behavior

oai:ojs.ejournal.undip.ac.id:article/12814 2021-10-13T04:01:35Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/12814 2021-10-13T04:01:35Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 4 (2017): Ilmu Kelautan; 201-212 https://ejournal.undip.ac.id/index.php/ijms/article/download/12814/29382 Setiawan, Riza Yuliratno; Universitas Gadjah Mada Wirasatriya, Anindya; Department of Oceanography, Faculty of Fisheries and Marine Sciences, Diponegoro University Shaari, Hasrizal Bin; School of Marine and Environmental Sciences, Universiti Malaysia Terengganu 21030 Kuala Terengganu, Terengganu, Malaysia Setyobudi, Eko; Department of Fisheries, Faculty of Agriculture, Universitas Gadjah Mada Rachman, Faizal 2017-12-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/12814 en The Ba/Ca ratio of planktic foraminifera carbonate serves as a new geochemical proxy for seawater Ba/Ca and thus providing information on modern and past salinity and freshwater discharge. In this study the applicability of Ba/Ca ratio of core-top Globigerinoides sacculifer collected off the eastern tropical Indian Ocean (ETIO) for paleoceanographic reconstructions was investigated. In doing so, we conducted a series of cleaning experiments for Ba/Ca extraction by using different reductive solutions. Our new results suggest that the Ba/Ca ratio of G. sacculifer cannot be utilized as a tracer for modern and past salinity changes in the ETIO region off the Sunda Strait. We suggest that the existence of seasonal upwelling adds an additional signal to the seawater Ba/Ca in the ETIO, and thus complicates the interpretation of G. sacculifer Ba/Ca as a freshwater tracer. Moreover, our cleaning experiment results show that the cleaning protocol of Mg/Ca, DTPA, and hydroxylamine can be used to extract valuable Ba/Ca ratios from planktic foraminifera tests. Keywords: G. sacculifer Ba/Ca, foraminifera cleaning experiments, the Sunda Strait.

oai:ojs.ejournal.undip.ac.id:article/2308 2012-03-01T08:38:13Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2308 2012-03-01T08:38:13Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 1 (2005): Jurnal Ilmu Kelautan; 41-49 Suradi, Suradi; Staf Pengajar PS. Manajemen Sumberdaya Perairan FPIK, Universitas Diponegoro, Semarang Sukimin, Sutrisno; Staf Pengajar PS. Air Sekolah Pascasarjana dan FPIK, Institut Pertanian Bogor, Bogor Boer, Menofatria; Staf Pengajar PS. Air Sekolah Pascasarjana dan FPIK, Institut Pertanian Bogor, Bogor Affandi, Ridwan; Staf Pengajar PS. Air Sekolah Pascasarjana dan FPIK, Institut Pertanian Bogor, Bogor Monintja, Daniel R; Staf Pengajar PS. TKL Sekolah Pascasarjana dan FPIK, Institut Pertanian Bogor, Bogor Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2308 en Penelitian aspek reproduksi dan daerah pemijahan udang jari (Metapenaeus elegans) di perairan SegaraAnakan Cilacap, dilakukan sejak Maret sampai Desember 2004. Penelitian bertujuan untuk mengetahui beberapa aspek reproduksi dan pengkajian musim dan daerah pemijahan udang M. elegans di perairan Segara Anakan. Metode peneltian yang digunakan survei post facto. Daerah penelitian dibedakan menjadi 3 wilayah perairan. Penentuan zona berdasarkan dua aspek, yaitu aspek ekologis dan aspek daerah penangkapan (fishing ground) alat tangkap apong. Pada setiap zona ditentukan tiga lokasi sampling. Sampel udang pada setiap stasiun diambil 30 ekor udang betina terbesar, sehingga terkumpul 270 ekor udang sampel. Hasil penelitian menunjukkan bahwa M. elegans memijah sepanjang tahun, dengan dua puncak musim pemijahanyaitu bulan April/Mei dan November/Desember. Daerah pemijahan udang jari (M. elegans) adalah perairan laguna bagian tengah. Meskipun pada lokasi pemijahan terjadi pendangkalan akibat laju sedimentasi yang tinggi dan menjadikan perairan keruh serta kondisi salinitas yang berfluktuasi tinggi, namun pemijahan tetap terjadi di perairan tersebut.Kata kunci : aspek reproduksi, daerah pemijahan, udang jari, laguna Segara Anakan.Study on the reproduction and spawning ground of Metapenaeus elegans in Segara Anakan Lagoon Cilacap&nbsp; was conducted from March to December 2004. This study was aimed at investigating some reproductiveaspects and to discover the spawning ground M. elegans. The research was used survey post facto method. The researh area was divided into three waters zone. The zone was determinated based on two aspect, i.e. ecological aspect and fishing ground aspect. Three sampling station determined of each zone. The shrimp&nbsp; sample was taken from three unit apong (set net) cathces. 30 biggest male shrimp were took off from in each, so 270 male shrimp collected. The result showed that M. elegans spawned along the year with two peaks of spawning season, i.e. April/May and November/December. Spawning ground of fine shrimp (M. elegans) was found in lagoon waters, despite high turbidity, high sedimentation rate and high salinityfluctuation in the water.Key words: reproduction aspect, spawning ground, M. elegans, Segara Anakan Lagoon.

oai:ojs.ejournal.undip.ac.id:article/36877 2021-12-05T18:30:07Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/36877 2021-12-05T18:30:07Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 3 (2021): Ilmu Kelautan; 165-172 Putra, I Nyoman Giri; Faculty of Marine Science and Fisheries, Universitas Udayana Puspitha, Ni Luh Putu Ria; Faculty of Marine Science and Fisheries, Universitas Udayana Suryaningtyas, Endang Wulandari; Faculty of Agricultural and Environmental Sciences (AUF), Rostock University Suryaningtyas, Endang Wulandari; Faculty of Agricultural and Environmental Sciences (AUF), Rostock University 2021-09-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/36877 Aquarium Trade; Banggai cardinalfish; Bali Strait; Control Region mtDNA; Exotic Species; Invasive en The living marine aquarium trade has been known to mediate various aquatic invaders to spread and established a new population outside of their natural home range. In most cases, the introduce species cause a cascaded effect which harm the native species and their ecosystem. The successful of the invasion event often related to the genetic properties of the introduced species. Therefore, using a molecular approach based on a mitochondrial DNA marker, the present work aimed to evaluate the population genetic structure of the introduced P. kauderni population in Bali Strait. Samples were collected from four sites in Gilimanuk Bay, Bali Strait. Our results showed  a high haplotype diversity and low nucleotide diversity that might be a signal of a bottleneck. Overall, we found five haplotypes comprising two unique haplotypes and three shared haplotypes. Genetic structure was detected in some localities, which indicates Pterapogon kauderni might originated from various genetically distinct populations. However, we could not conclusively determine the observed patterns of the genetic structure within each site. These patterns are likely related to the multiple introduction event of P. kauderni in Bali Strait. Additional samples from both side (introduced and native habitat) combined with more rapidly evolving markers may describe the structure more clearly.

oai:ojs.ejournal.undip.ac.id:article/7558 2020-04-17T06:00:02Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7558 2020-04-17T06:00:02Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 2 (2014): Ilmu Kelautan; 105-112 Pribadi, Rudhi; Jurusan Ilmu kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jl. H. Prof. Sudarto, SH, Tembalang Semarang, Indonesia. 50275. Muhajir, Achmad; Jurusan Ilmu kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jl. H. Prof. Sudarto, SH, Tembalang Semarang, Indonesia. 50275. Widianingsih, Widianingsih; Jurusan Ilmu kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jl. H. Prof. Sudarto, SH, Tembalang Semarang, Indonesia. 50275. Hartati, Retno; Jurusan Ilmu kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jl. H. Prof. Sudarto, SH, Tembalang Semarang, Indonesia. 50275. 2014-06-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7558 en Pemangsaan sering mentebabkan kegagalan propagul mangrove untuk tumbuh menjadi individu baru. Pemangsaan terjadi saat propagul masih bergantung pada pohon induk atau pra-penyebaran maupun setelah terlepas dan jatuh dari pohon induk atau paska-penyebaran. Penelitian ini bertujuan untuk mengetahui tingkat pemangsaan propagul Rhizophora mucronata Lamk., R. stylosa Griff. dan R. apiculata Blume di Desa Pasar Banggi, Kabupaten Rembang, Jawa Tengah. Penelitian terdiri dari 3 tahap yaitu penelitian pendahuluan untuk mengetahui dominasi spesies, penelitian deskriptif pada pra-penyebaran tentang pemangsaan propagul pra-penyebaran dan penelitian eksperimental untuk mengetahui hubungan antara dominasi spesies dengan tingkat pemangsaan propagul paska-penyebaran. Tingkat pemangsaan propagul pra-penyebaran R. stylosa terbukti paling tinggi tingkat pemangsaannya yaitu 61,06% (kisaran 45,40-76,05%), disusul R. apiculata 58,18% (47,41-68,00%) dan terendah R. mucronata 11,88% (7,06-15,71%). Selama 18 hari pengamatan tingkat pemangsaan propagul R. stylosa paling rendah di stasiun yang didominasi R. stylosa (46,67%) dibandingkan di stasiun yang di dominasi R. apiculata (63,33%) maupun R. mucronata (83,33%). Pemangsaan propagul R. mucronata paling tinggi di stasiun yang didominasi R. mucronata (95%) dibandingkan di stasiun yang di dominasi R. apiculata (55%) maupun R. stylosa (45%). Pemangsaan propagul R. apiculata paling rendah di stasiun yang didominasi R. apiculata (50% ) dibandingkan di stasiun yang di dominasi R. stylosa (70%) maupun R. mucronata (73,33%). Hasil penelitian ini berhasil membuktikan teori dominance-predation pada spesies R. stylosa dan R. apiculata, namun tidak pada R. Mucronata. Kata kunci: pemangsaan, propagul, pra-penyebaran, paska-penyebaran, mangrove  Propagule predation on mangrove in some extent reduced its viability to grow into seedling. The predation could happened before (pre-dispersal) or after (post-dispersal) the propagule drop from the tree.The reasearch was conducted in Pasar Banggi, Rembang District, Central Java. The aim was to investigate the predation rate of Rhizophora mucronata Lamk., R. stylosa Griff. and R. apiculata Blume propagules pre-dispersal and post-dispersal. Firstly, preface experiment for find domination spesies in the location, Second, with applied descriptive-based survey sampling and field experiment methods. Than all propagules of five replication trees were harvested and checked for its condition on pre-dispersal step. The third, with post-dispersal study there were twenty propagules from each spesies and tied them with used nylon string and placed on the forest floor for 2 until 18 days and checked its condition every 2 days after placement. This study is also set for tested the Smith’s theory on propagule predation related to tree domination. Rhizophora stylosa propagule was  most predated before they fall (mean 61,06%, range 45,40-76,05%), followed by R. apiculata (mean 58,18%, range 47,41-68%) and the lowest isR. mucronata with mean 11,88% (range 7,06-15,71%). After 18 days of experiment in the field R. stylosa propagule in R. stylosa–dominated area was the lowest predated (mean 46,67%) compared to propagule in the area dominated by R. apiculata (63,33%) and also in R. mucronata area (83,33) Predated R. mucronata propagule is the highest in the R. mucronata dominated area (mean 95%) compared with R. apiculata dominated area (mean 55%) and also in R. stylosa dominated area (45%). Pradated of R. apiculata propagule is the lowest in the domination area of R. apiculata (50% ) compared with R. stylosa area domination with (mean 70%) also R. mucronata (73,33%). The result showed that the theory of dominance-predation can be proved only for R. stylosa and R. apiculata spesies, but not for R. mucronata spesies. Keywords : propagule, predation, pre-dispersal, post-dispersal, mangrove

oai:ojs.ejournal.undip.ac.id:article/67501 2024-12-23T10:10:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/67501 2024-12-23T10:10:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 4 (2024): Ilmu Kelautan; 519-529 Shintianata, Dienda; Research Center for Radiation Process Technology, Research Organization for Nuclear Energy, National Research and Innovation Agency Lubis, Ali Arman; Research Center for Radiation Process Technology, Research Organization for Nuclear Energy, National Research and Innovation Agency Sugiharto, Untung; Research Center for Radiation Process Technology, Research Organization for Nuclear Energy, National Research and Innovation Agency Andini, Faza Putri; Research Center for Radiation Process Technology, Research Organization for Nuclear Energy, National Research and Innovation Agency Meiliastri, Sonia Saraswati; Research Center for Radiation Process Technology, Research Organization for Nuclear Energy, National Research and Innovation Agency Elias, Md Suhaimi; Analytical Chemistry Application Group, Waste and Environmental Technology Division, Malaysian Nuclear Agency 2024-12-11 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/67501 mangrove sediment; heavy metals; ICP-OES; geochronology; sediment flux en The dynamics of heavy metal concentrations in the sediments of mangroves are crucial for understanding the health and sustainability of these ecosystems. This study, conducted in a conservation area of Ujung Kulon National Park (UKNP) in Indonesia, investigated the distribution of heavy metals in mangrove sediments, which are vital in trapping these potentially harmful substances due to their absorption, sedimentation, and bioaccumulation capabilities. By analyzing sediment cores from different intertidal zones (interior, fringe, and mudflat) through Inductively Coupled Plasma - Optical Emission Spectrometry (ICP-OES), this study examined concentrations and distribution patterns of six heavy metals: manganese (Mn), copper (Cu), zinc (Zn), cobalt (Co), chromium (Cr), and Iron (Fe). The results indicated that the average concentration of heavy metals followed a decreasing order of Fe&gt; Mn &gt; Zn &gt; Cu &gt; Cr&gt; Co across all locations. All of the heavy metals in the interior and fringe increased gradually from the year 1900 to the present; on the contrary, the mudflat decreased over the same period. Enrichment Factor (EF) and Geo Accumulation Index (Igeo) were used to evaluate heavy metal pollution levels comprehensively. The study revealed temporal trends in heavy metal concentrations, highlighting the need for further research to mitigate these contaminant's effects on mangrove ecosystems. By integrating the EF, the Igeo index, and quality standards, the research demonstrates that UKNP is likely pristine. Furthermore, this work emphasizes the need to utilize dated environmental archives to reconstruct historical patterns in trace metal pollution in locations where long-term environmental studies remain particularly limited

oai:ojs.ejournal.undip.ac.id:article/1844 2017-08-19T22:47:30Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1844 2017-08-19T22:47:30Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 1 (2011): Ilmu Kelautan; 41-48 Subagiyo, Subagiyo; Laboratorium Ilmu Kelautan, PS. Ilmu Kelautan, Universitas Diponegoro Kampus Ilmu Kelautan - Tembalang - Semarang Telp 024 7474698 Email: subagiyo_kelautan@yahoo.co.id Djunaedi, Ali; Laboratorium Ilmu Kelautan, PS. Ilmu Kelautan, Universitas Diponegoro Kampus Ilmu Kelautan - Tembalang - Semarang Telp 024 7474698 2012-02-12 06:44:43 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1844 id Strategi penyehatan ikan secara terpadu merupakan salah satu upaya yang paling efektif dalam pengendalian penyakit serta perlindungan lingkungan pada budidaya akuatik.&nbsp; Pengembangan probiotik menduduki peran fungsional yang penting bersamaan dengan pengembangan vaksin dan immunostimulan. Penelitian ini bertujuan untuk menseleksi bakteri probiotik yang akan dikembangkan sebagai materi dasar untuk mengkonstruksi konsorsium probiotik dengan target fungsional di saluran pencernaan ikan kerapu. Salah satu kriteria seleksi ditetapkan berdasarkan desain konstruksi konsorsium gut probiotik yaitu kemampuan menghasilkan senyawa antibakteri terhadap bakteri pathogen dan kemampuan menghasilkan enzim pencernaan diantaranya adalah enzim proteolitik ekstraseluler. Penelitian ini dilakukan dengan metode eksplorasi dan eksperiment laboratoris. Ikan kerapu macan secara aseptic diambil saluran pencernaannya, kemudian dihancurkan menggunakan mortar. Penanaman bakteri dilakukan dengan metode pour-plate pada medium nutrient agar. Deteksi aktivitas antibakteria dilakukan dengan metode difusi agar menggunakan paper disk sedangkan deteksi produksi enzim proteolitik ekstraseluler dilakukan dengan metode tusukan pada media yang diperkaya dengan skim milk. Hasil seleksi berdasarkan kriteria seleksi yang telah ditetapkan diperoleh 8 isolat bakteri potensial untuk dapat dikembangkan sebagai konsorsium probiotik. Ke 8 isolat ini mempunyai kemampuan untuk&nbsp; menghasilkan senyawa antibakteri yang aktif terhadap 4 jenis vibrio (V. parahaemolyticus, V. vulnivicus, V. harveyii, dan V.anguilarum) serta menghasilkan enzim proteolitik ekstraseluler yang diperlukan untuk mencerna senyawa yang bersifat protein yang merupakan komponen utama pakan ikanKata kunci: Probiotik, pengendalian penyakit, antibakteri, enzim proteolitik, saluran&nbsp; pencernaan, ikan kerapu&nbsp;The strategy to healhty fish in an integrated manner is one of the efforts that is the most effective to environmentally friendly disease control. The development of probiotics occupied the functional role that is important along with the development of the vaccine and immunostimulant. This research aimed to select the candidates of probiotic bacteria that will be developed as basic material to construct the probiotic consortium with the functional target in the digestion tract&nbsp; of the grouper fish. The one of selection criteria was appointed based on the construction of the gut probiotic consortium is the capacity to produce the antibacterial compound against the pathogen, and the capacity to produce proteolitic enzymes. The research was carried out with the exploration and experimenal laboratory methods The intestine was removed from the fish of the tiger grouper, afterwards was destroyed by mortar. The planting of the bacteria was carried out with the pour-plate method in nutrient agar medium. Antibacterial activity was detection by agar diffusion method using paper disk, while the detection capability to produce extracellular proteolitic enzymes was carried out by using enrichment media with skim milk. The Results of selection obtained eight bacterial isolates that can be developed potentially as the consortium of gut probiotic. The eight bacterial isolates were able to produce antibacterial compounds (that was active against&nbsp; V. parahaemolyticus, V. vulnivicus, V. harveyii, and V.anguilarum) and extracellular proteolitic enzymes Key words: Probiotic, diseases control, antibacteria, proteolitic enzyme, gastrointestinal tract, grouper

oai:ojs.ejournal.undip.ac.id:article/19357 2019-03-26T05:28:15Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19357 2019-03-26T05:28:15Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 2 (2002): Jurnal Ilmu Kelautan; 127-130 Widowati, Ita; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Suprijanto, Jusup; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Suprapto, Djoko; Jurusan Perikanan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro 2009-06-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19357 en Analisa kualitatif reproduksi kerang kipas-kipas Amusium sp dari perairan Weleri-Kendal Jawa Tengah telah dilakukan selama bulan Maret sampai Juni 2001. Data kualitatif didapatkan setiap bulan berdasarkan kriteria tingkat kematangan gonad dan index gonad. Hasil penelitian menunjukkan bahwa pada bulan Maret dan April, gonad dalam keadaan matang (tingkat kematangan gonad VI), dengan indeks gonad 13,86 % dan 13,87 %. Bulan Mei-Juni indeks gonad menurun menjadi 8,49 % dan 3,97 %, dimana diduga berkaitan dengan masa pemijahan.Kata kunci: Amusium sp, indeks gonad, tingkat kematangan gonad   Qualitative analysis of reproductive organ of the scallop Amusium sp from Weleri - Kendal waters was carried from March to June 2001 In Weleri-Kendal (Central Java). Data were compiled monthly based on staging criteria and gonad indices. Scallop were generally ripe by March-April (stage of VI), with gonad index 13.86 % and 13.87 %. From May -June, gonad indices decreased 8.49 % and 3.97 %, it was suggested that it correlated with their spawning periods.Keywords: Amusium sp, gonad indices, gonadal maturity stages.

oai:ojs.ejournal.undip.ac.id:article/2355 2012-03-03T11:58:53Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2355 2012-03-03T11:58:53Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 3 (2004): Jurnal Ilmu Kelautan; 141-152 Mulidin, Mulidin; Jurusan Fisika FMIPA Unhalu, Kampus Bumi Tridharma, Anduonohu, Kendari e-mail: muliddin@plasa.com Sugianto, Denny N; Program Studi Oseanografi, Jurusan Ilmu Kelautan FPIK UNDIP Semarang e-mail: dennysugianto@yahoo.com Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2355 en Penelitian ini dilakukan sebagai upaya untuk penelusuran keefektifan hutan mangrove dalam mereduksi penjalaran energi gelombang melalui model analitik. Disipasi energi dalam domain frekuensi ditentukan dengan meninjau hutan mangrove sebagai medium acak yang memiliki karakteristik tertentu dengan menggunakan ukuran dan lokasi dari batang-batang pohon mangrove. Persamaan pengatur nonlinier dilinierisasi dengan menggunakan konsep minimalisasi dalam tinjauan stokastik dan interaksi antara batang dan akar-akar mangrove diperkenalkan melalui modifikasi koefisien gesek. Contoh-contoh perhitungan sebagai penerapan dari model analitik ini dilakukan pada jenis mangrove Rhizophora dan Ceriops. Hasil penelitian menunjukkan bahwa peredaman energi gelombang tergantung pada kerapatan hutan mangrove dan tergantung pula pada diameter dari batang dan akar mangrove.Kata kunci: model analitik, hutan mangrove, peredaman energi gelombangThis research conduct the analytical model to predict the attenuation of wind-induced random surface waves that propagate through the mangrove forest. The energy dissipation in the frequency domain is determinedby treating the mangrove forest as a random media with certain characteristics using the geometry of mangrove trunks and their locations. Initial nonlinear governing equations are linearized using the concept of minimalization in the stochastic sense and interactions between mangrove trunks and roots have been introduced through the modification of the drag coefficients. Examples of calculations of this analytical model was carried out for mangrove forests which occupied by Rhizophora and Ceriops species. The resulting rate of wave energy attenuation depends strongly on the density of the mangrove forest, and on diameter of mangrove roots and trunks.Key word : analytical model, mangrove forest, wave energy attenuation

oai:ojs.ejournal.undip.ac.id:article/39037 2022-09-06T08:34:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/39037 2022-09-06T08:34:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 2 (2022): Ilmu Kelautan; 111-123 Rachman, Arief; Plankton Laboratory, Research Center for Oceanography, Indonesian Institute of Science Thoha, Hikmah; Plankton Laboratory, Research Center for Oceanography, Indonesian Institute of Science Intan, Mariana Destila Bayu; Plankton Laboratory, Research Center for Oceanography, Indonesian Institute of Science Sianturi, Oksto Ridho; Plankton Laboratory, Research Center for Oceanography, Indonesian Institute of Science Witasari, Yunia; Research Center for Limnology and Aquatic Resources, National Research and Innovation Agency, Cibinong Science Center Wibowo, Singgih Prasetyo Adi; Plankton Laboratory, Research Center for Oceanography, Indonesian Institute of Science Iwataki, Mitsunori; Graduate School of Agricultural and Life Sciences, University of Tokyo 2022-06-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/39037 sediment; cyst bank; harmful dinoflagellate en Dinoflagellate cysts have an important role for their bloom dynamics, which are commonly deposited along fine sediment grains and become the source of the next bloom. This study aimed to describe the cyst banks species composition, and their relationship with the sediment particles size and plankton composition in the coast of Pangkajene, South Sulawesi. Cysts observed in this study were extracted from seabed sediments collected from 9 sites. A potential cyst bank, with a cyst density of 240 cysts.g-1 sediment wet weight was found at PK-19, located in proximity to a large harbour complex. Although unusual, cyst density was significantly and positively correlated with the percentage of gravel. In contrast, the diversity of cysts seems to be affected by the percentage of fine sediments, such as silt and clay. None of the sediment composition was found strongly and significantly affecting both cyst density and diversity. A southward increase in cyst density was similar to the trend in the cell density of its planktonic form. Cysts of Protoperidinium spp., Scrippsiella spp., and Pheopolykrikos hartmannii were common and abundant in the sediment. Aside from Protoperidinium spp., most dinoflagellate species found in cyst form were absent from the water column. The occurrence of cysts of harmful dinoflagellates with records of devastating blooms in other coastal areas in Indonesia, such as Margalefidinium polykrikoides, Pyrodinium bahamense, and Gymnodinium catenatum, signifies a need to regularly monitor the area around Pangkajene coast to mitigate impacts of future blooms.

oai:ojs.ejournal.undip.ac.id:article/540 2020-10-25T22:36:07Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/540 2020-10-25T22:36:07Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 1 (2008): Jurnal Ilmu Kelautan; 43-48 Endrawati, Hadi Zaenuri, Muhammad Kusdiyantini, Endang Kusumaningrum, Hermin Pancasakti 2010-11-11 19:39:30 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/540 id Keberhasilan kultivasi copepoda diantaranya dipengaruhi oleh jenis pakan fitoplankton. Penelitian ini bertujuan untuk mengetahui densitas copepoda yang diberi pakan Chlorella sp. dan Tetraselmis chuii. Penelitian ini dilaksanakan dari Mei hingga Desember 2005 di Laboratorium Biologi Oseanografi UNDIP. Copepoda diambil per bulan dari bulan Mei hingga Oktober 2005, dari Perairan Demak. Kultivasi copepoda menggunakan 6 beker bervolume 2 L dengan densitas awal 100 ind. / L dan 6 akuarium bervolume 20 L dengan densitas awal 1000 ind. / L. Chlorella sp. dengan densitas 15.200 sel / ml dan Tetraselmis chuii dengan densitas 11.000 sel / ml yang berasal dari Balai Besar Pengembangan Budidaya Air Payau (BBPBAP) Jepara, digunakan sebagai pakan copepoda. Determinasi densitas copepoda dilakukan per minggu dari setiap perioda kultivasi ( 3 minggu ). Perioda kultivasi diulang per bulan selama 6 bulan. Parameter suhu, salinitas dan pH diukur setiap hari. Copepoda yang dikultivasi pada media 2 I dan 201 dengan pakan Tetraselmis chuii menunjukkan densitas rata - rata berturut-turut 227 - 303 ind. / L, dan 2534 - 3808 ind. / L. Densitas copepoda pada media 2 L dan 20 L dengan pakan Chlorella sp. menunjukkan rata - rata 297 -377 ind. / L pada media 2 l, serta 3241 - 4824 ind. / L. Pakan Chlorella sp. dan Tetraselmis chuii memberikan kontribusi densitas copepoda dengan model yang sama. Mesklpun demikian pakan Chlorella sp. menghasilkan densitas copepoda yang lebih tinggi dibandingkan Tetraselmis chuii pada dua volume media kultivasi yang berbeda. Kata kunci: Copepoda, Chlorella sp., Tetraselmis chuii, densitas

oai:ojs.ejournal.undip.ac.id:article/9705 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9705 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 3 (2015): Ilmu Kelautan; 127-134 Wibowo, Pra Luber Agung; Coastal Resources Management Program, Diponegoro University, Hartoko, Agus; Coastal Resources Management Program, Diponegoro University, Ambariyanto, Ambariyanto; Faculty of Fisheries and Marine Science, Diponegoro University, 2015-09-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9705 en Vast development of urban cities in coastal area has caused rapid degradation of the environment. Coastal zone vulnerability is mainly influenced by sea level rise, land subsidence, storm surge, sediment transport, socio-economic and coastal management policies. Present study investigates the main factor influences coastal vulnerability of developing coastal urban city at north coast of Java. Two factors were observed in the study; firstly land subsidence was observed by geodetic and leveling methods. Secondly, tidal inundation was measured by field work and participatory mapping. Tidal inundation model was performed using spatial model. Physical vulnerability model was conducted by scoring and weighting. The results show that Average rate of land subsidence between 2003-2014 is -0,021 (0,0-0,091) m.yr-1. Tidal inundation in 2014 covering 1286.29 hectares, where the highest impact happened at brackish water pond (969.63 ha). Tidal inundation prediction on 2031 will inundate ​​1786.76 ha, which the largest tidal inundation is in the residential area (646.85 ha). Coastal zone vulnerability in the research areas predominantly was influenced by land subsidence, and classified in moderate vulnerable. Land subsidence happened due to most of research areas are consists of alluvial plains morphology units that are still in consolidation process. Land subsidence conditions strongly influence the extent of tidal inundation in the future. Keywords: land subsidence, tidal inundation, vulnerability, coastal zones Pesatnya perkembangan kota di daerah pesisir menyebabkan degradasi lingkungan secara cepat. Kerentanan wilayah pesisir sangat dipengaruhi oleh kenaikan permukaan laut, penurunan tanah, gelombang badai, transport sedimen, kebijakan sosial ekonomi dan manajemen pesisir. Penelitian ini meneliti faktor utama yang mempengaruhi kerentanan pesisir pada pengembangan kota pesisir di pantai utara Jawa. Dua faktor yang diamati dalam penelitian ini; pertama penurunan tanah diamati dengan metode geodetik dan leveling. Kedua, genangan rob diukur dengan survei lapangan dan pemetaan partisipatif. Model genangan rob dilakukan dengan menggunakan model spasial. Model kerentanan fisik dilakukan dengan scoring dan pembobotan. Hasil penelitian menunjukkan bahwa rata-rata tingkat penurunan tanah antara tahun 2003-2014 adalah -0.021 (0,0-0091) m.th-1. Genangan rob pada 2014 seluas 1.286,29 ha, dimana dampak tertinggi terjadi di area tambak (969,63 ha). Prediksi genangan rob pada 2031 akan menggenangi 1.786,76 ha, dimana genangan rob terbesar berada di area perumahan (646,85 ha). Kerentanan wilayah pesisir di wilayah penelitian dominan dipengaruhi oleh penurunan tanah, dan diklasifikasikan dalam kerentanan sedang. Penurunan tanah terjadi karena sebagian besar daerah penelitian terdiri dari unit morfologi dataran aluvial yang masih dalam proses konsolidasi. Kondisi penurunan tanah sangat mempengaruhi luasan genangan rob di masa depan. Kata kunci: penurunan tanah, genangan rob, kerentanan, kawasan pesisir

oai:ojs.ejournal.undip.ac.id:article/70639 2025-06-25T07:35:55Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/70639 2025-06-25T07:35:55Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 2 (2025): Ilmu Kelautan; 289-300 Himawa, Daenk; Department of Oceanography, Faculty of Fisheries and Marine Science, Diponegoro University Wirasatriya, Anindya; Department of Oceanography, Faculty of Fisheries and Marine Science, Diponegoro University Kunarso, Kunarso; Department of Oceanography, Faculty of Fisheries and Marine Science, Diponegoro University Wetchayont, Parichat; Disaster Management Program, Faculty of Science and Health Technology, Navamindradhiraj University 2025-06-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/70639 Global warming; Coastal upwelling; SST; IOD; ENSO en This study examines the unclear role of wind-driven upwelling through Ekman transport and pumping, along with the combined effects of the Indian Ocean Dipole (IOD) and El Niño-Southern Oscillation (ENSO) trends on the warming rate of Sea Surface Temperature (SST) along the southern coast of Java. Using data from 1940 to 2023, we investigated how IOD, ENSO, Ekman transport, and Ekman pumping influence SST trends. Our results reveal a cooling trend in SST near the coast during the upwelling period and a warming trend across the entire area during the non-upwelling period. The cooling SST weakens the easterly winds passing through the coastal areas, reducing upwelling intensity, as indicated by the weakening of Ekman transport. However, Ekman pumping, another proxy for upwelling, shows a strengthening trend. Our comparison along coastal areas suggests that the increase in Ekman pumping is more robust than the decrease in Ekman transport, leading to an overall intensification of upwelling. Additionally, we observed positive trends in IOD and ENSO during the upwelling period. These trends significantly enhance the upwelling process and are responsible for the observed cooling trend in SST. Thus, while wind-driven upwelling through Ekman transport and pumping plays a crucial role as a key process, its intensification is primarily driven by the trends in IOD and ENSO.

oai:ojs.ejournal.undip.ac.id:article/2228 2012-02-27T12:13:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2228 2012-02-27T12:13:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 2 (2006): Jurnal Ilmu Kelautan; 87-94 Rositasari, Ricky; Bidang Dinamika Laut, Pusat penelitian Oseanografi- LIPI- Jakarta Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2228 en Foraminifera bentik adalah salah satu organisme yang mampu berasosiasi dengan lingkungan tercemar. Pengamatan foraminifera dilakukan di wilayah sekitar Teluk Jakarta mulai dari pesisir sampai perairan laut terbuka. Hasil penelitian menunjukkan terdapat perbedaan komposisi jenis pada foraminifera yang terdapat di daerah muara, teluk dan laut terbuka, serta munculnya abnormalitas pada morfologi cangkang Ammonia beccarii. Perbedaan komposisi jenis serta kemunculan cangkang abnormal ini merupakan respon foraminifera terhadap pengaruh beberapa faktor lingkungan.Kata kunci: komposisi, foraminifera bentik, pencemaranBenthic foraminifera is one of the taxa which able to adapt in polluted environment. The observation had been conducted in Jakarta Bay including estuarine, coastal area and open shore. The result shows that there were differentiation on species composition on the coastal area, inner cove and open shore. There were also abnormalities on the test morphology on Ammonia beccarii. The differentiation on species composition and the appearance of abnormal test assume as the influence of environment factors.Key words: composition, benthic foraminifera, pollution

oai:ojs.ejournal.undip.ac.id:article/14846 2021-10-13T03:30:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/14846 2021-10-13T03:30:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 2 (2019): Ilmu Kelautan; 91-98 Afandy, Zulfikar; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Bogor Agricultural University Damar, Ario; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Bogor Agricultural University Agus, Syamsul Bahri; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Bogor Agricultural University 2019-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/14846 coral reef; sustainability; marine protected area; abundance en The continuity of coral reef ecosystem highly depends on the new coral larvae recruitment process. Hence, the information regarding distribution, the abundance of corals, and its relation to other variables are highly important in that ecosystem management. Research was conducted at nine stations represented each zone at the conservation area of Kapoposang Marine Tourism Park (TWP Kapoposang). This research aims at seeking for spatial variations of the abundance of coral recruitment at three primary zones monitored (core zone, sustainable fishing zone and utilization zone) and we further identified its relations with spatial variation of herbivorous fishes abundance and  coral cover’s condition at those zones. The coral recruitment observation employed transect quadrat sampling method with size of 1x1 meter and 10 times repetition at a similar depth, and the coral recruitment abundance measurement in natural habitat based on the amounts of juvenile corals has been defined as coral colony with size of ≤10 cm. Overall, this research has found 534 coral juveniles consisted of 19 genera and 7 families, and the average of juvenile coral density stood at 5.34±4.45 SE.m-2. The coral reef recruitment category at TWP Kapoposang could be classified as high and its abundance spatial distribution showed no significant differences between each zone, as well as not influenced by either herbivorous fish abundance variable or the percentage of live coral cover.

oai:ojs.ejournal.undip.ac.id:article/3645 2017-08-19T22:45:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/3645 2017-08-19T22:45:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 2 (2012): Ilmu Kelautan; 81-86 Supriyantini, Endang; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Semarang, Indonesia. Telp./Fax 0247474698 Ismunarti, Dwi Haryo; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Semarang, Indonesia. Telp./Fax 0247474698 Ridlo, Ali; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Semarang, Indonesia. Telp./Fax 0247474698 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/3645 en Pengetahuan tentang asupan nutrisi yang sesuai untuk kerang totok Polimesoda erosa sangat penting selain untuk meningkatkan kegunaan diet mikroalga juga untuk mengetahui dosis pakan alami Tetraselmis chuii dan Skeletonema costatum yang paling efisien terhadap pertumbuhan kerang totok. Biota yang digunakan dalam penelitian ini adalah kerang totok ukuran 3-4 cm yang diperoleh dari perairan sekitar P. Gombol, Segara Anakan, Cilacap. Wadah yang digunakan adalah akuarium berukuran 30x30x30 cm dengan volume media 2 liter. Metode yang digunakan adalah eksperimental laboratorium dengan rancangan acak lengkap, 3 perlakuan dan 3 ulangan, yaitu campuran T. chuii 36 x 104 sel/ml dan S. costatum 9 x 104 sel/ml (pakan T1); T. chuii 27 x104 sel/ml dan S. costatum 18 x 104 sel/ml (pakan T2) dan T. chuii 18 x 104sel/ml dan S. costatum 27 x 104 sel/ml (pakan T3). Pakan diberikan sekali sehari, pemeliharaan dilakukan selama 3 bulan. Pengukuran beratyang dilakukan seminggu sekali dan dianalisis Specific Growth Rate (SGR) dan Food Convertion Ratio (FCR). Hasil penelitian menunjukkan bahwa campuran pakan T. chuii dan S. costatum memberikan pengaruhpertambahan berat yang berbeda nyata (p&lt; 0,05), tetapi tidak memberikan pengaruh yang nyata terhadap SGR dan FCR kerang Totok (p &gt; 0,05). Pakan campuran T. chuii 27 x 104 sel/ml dan S. costatum 18 x 104 sel/ml meningkatkan nilai SGR namun mempunyai nilai FC yang besar.Kata kunci: Kerang Totok, Polimesoda erosa, Tetraselmis chuii, Skeletonema costatumKnowledge on ideal feeding dose for kerang totok P. erosa is needed to improved the use of microalgae diet and to investigate the most efficient natural feeding dose of T. chuii and S. costatum on growth of kerang totok (P. erosa). The organism used on this study was Kerang Totok size 3-4 cm which harvested from P. Gombol, Segara Anakan, Cilacap. Experiment was conducted in 30cm x 30cm x 30 cm aquarium filled with 2 liter of water each. A fully randomized design of laboratorium experimental method was applied for the study with three treatment i.e; 36 x 104 cell/ml T. chuii : 9 x 104 cell/ml S. costatum (T1); 27 x 104 cell/ml T. chuii : 18 x 104 cell/ml S. costatum (T2) and 18 x 104cell/ml T. chuii : 27 x 104 cell/ml S. costatum (T3), single feed dose per day at 08.00 WIB for 3 month period. Three replications were set up for each treatment. Parameter measured during the study were weight (weekly measurement), Specific Growth Rate (SGR) and Food Convertion Ratio (FCR). The result showed that feeding dose of T. chuii and S. costatum significantly affect the mean weekly weight gain (p&lt; 0,05) but not to mean of SGR or FCR (p &gt; 0,05). Mixture of 27 x 104 sel/ml T. chuii : 18 x 104 sel/ml S. costatum) tend toincrease the SGR values but give bigger FCR during the study period.Key words: Kerang Totok, Polimesoda erosa, Tetraselmis chuii, Skeletonema costatum

oai:ojs.ejournal.undip.ac.id:article/51452 2023-05-21T03:05:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/51452 2023-05-21T03:05:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 1 (2023): Ilmu Kelautan; 81-89 Susetyo, Andhi; Aquatic Resources Management Master Program, Faculty of Fisheries and Marine Science, Universitas Diponegoro Suseno, Heny; Radioisotope for Ecology Study, Research Center for Radioisotope, Radiopharmaceutical, and Biodosimetry Technology. Research Organization of Nuclear Energy, National Research and Innovation Agency Muslim, Muslim; Department Oceanography, Faculty of Fisheries and Marine Science, Universitas Diponegoro Munir, Miftakul; Radioisotope for Ecology Study, Research Center for Radioisotope, Radiopharmaceutical, and Biodosimetry Technology. Research Organization of Nuclear Energy, National Research and Innovation Agency Pujiyanto, Anung; Radioisotope for Ecology Study, Research Center for Radioisotope, Radiopharmaceutical, and Biodosimetry Technology. Research Organization of Nuclear Energy, National Research and Innovation Agency Yusof, Noor Fadzilah Binti; Malaysian Nuclear Agency 2023-03-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/51452 microplastic; polystyrene; bioaccumulation; , labelling; Zn-65radiotracer; en Plastic waste is a solid that is difficult to decompose but can turn into environmental microplastics. Microplastics are sizes between 0.1 μm–5 mm, highly prolific anthropogenic pollutants affecting terrestrial, freshwater, and marine ecosystems. The purpose of this study was to determine the ability of Babylonia spirata to accumulate and eliminate polystyrene microplastics. This experiment uses the nuclear applications technique. The experiment consists of two methods: manufacturing microplastics and biokinetics. The manufacture of microplastics labeled Zn-65 is based on the reaction of polystyrene sulfonate with zinc to form polystyrene sulfonate Zn resin. This microplastic labeled Zn-65 is very stable in the aquatic environment, so it is used for bioaccumulation experiments. Biokinetics includes acclimatization/adaptation of the organism for seven days, bioaccumulation consists of the organism accumulating microplastics labeled Zn-65 for seven days, and depuration for seven days that were placing the organism accumulating microplastics labeled Zn-65 in water free of contamination and biokinetics calculations include the BCF (Biocontration Factor), ku (uptake constant), ke (depuration constants), and t1/2 (half-life). The experimental results show that the ability to bioaccumulate polystyrene microplastics from seawater (BCF) is 79.2 to 304.31 ml.g-1. This bioaccumulation is affected by the microplastic content in the water. The biological half-life of the microplastic is 14.54 to 41.78 d. There is a relationship between the concentration and the Ku, Ke and BCF. the polystyrene content. The experimental results show that microplastics bioaccumulate in a marine organism so that they can move through the food chain and are ultimately harmful to humans.

oai:ojs.ejournal.undip.ac.id:article/587 2012-02-27T23:57:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/587 2012-02-27T23:57:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 1 (2007): Jurnal Ilmu Kelautan; 24-30 Litaay, Magdalena; Jurusan Biologi F. MIPA Universitas Hasanuddin, Makassar Peneliti Pusat Penelitian Terumbu Karang UNHAS, Makassar Jl. Perintis Kemerdekaan Km 10, Kampus UNHAS Tamalanrea, Makassar 90245 Email: magdalenalitaay@yahoo.com Gobel, Risco B.; Jurusan Biologi F. MIPA Universitas Hasanuddin, Makassar Abdullah, As'adi; Jurusan Biologi F. MIPA Universitas Hasanuddin, Makassar Peneliti Pusat Penelitian Terumbu Karang UNHAS, Makassar Jl. Perintis Kemerdekaan Km 10, Kampus UNHAS Tamalanrea, Makassar 90245 Lejab, Serii; Jurusan Biologi F. MIPA Universitas Hasanuddin, Makassar 2010-11-22 06:00:09 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/587 id Telah dilakukan studi kualitas media pemeliharaan larva lola merah dan kima sisik. Pengambilan sampel air dilakukan pada 4 stasiun yaknh A (sumber air laut); B: penyaringan I (ijuk); C (filter bagganda WA dan I 'A); dan D (airdalam bak budidaya). Pemeriksaan mikrobiologis meliputi uji kuantitatif (SPC dan MPN) dan kuaiitatif (makroskopi, mikroskopis dan uji biokimia). Hasil analisis SPC menunjukkan total bakteri pada stasiun A, B, C dan D (5.0 x 107; 1.8 x 10s; 8.0 x 10* dan 8.6 x 105 bakteri/ml), sedangkan MPN: 11 x 102; 4.3 x 10'; 0.73 x 10' dan 11 x 102 bakteri/ml). Hasil pengamatan morfologi koloni bakteri pada stasiun A, teridentifikasi 6 isolat (A 1, AZ, A3, A4, A5, dan A6), Stasiun B,C dan D masing-masing ada 4 isolat Isolat A1, AZ, A3, A4, Bl, BZ, Cl, CZ, DI dan DZ bersifatgram positif, sedangkan A5, A6, B3,B4, C3, C4, D3 dan D4 bersifatgram negatif. Isolat Al, AZ, A4, Bl, BZ, Cl, CZ, Dl dan DZ membentuk spora, sementara A3, A5, A6, B3, B4, C3, C4, D3 dan D4 tidak membentuk spora. Isolat yang teridentifikasi memiliki kesamaan sifat dengan bakteri genera Escherichia, Bacillus, Micrococcus, Pseudomonas dan Streptomyces. Sistem filtrasi air laut masih layak.Kata kunci: bakteri laut, Trochus niloticus L, Tridacna squamosaThe study on the quality of larval rearing media of the top shell and scally giant clam had been done. Watersamples was collected at 4 station: A) sea water; B: filtarion I; C: filtration 2 (fillter bag 10 &frac14; and 1 &frac14; ); D:inside larval rearing tank. Microbiology assay including quantitaive (SPC and MPN), and qualitative test(macroscopy, microscopic and biochemistery) were conducted on samples. The SPC results shows total bacteriaat station A, B, C and D are 5.0 x 107; 1.8 x 106; 8.0 x 104 and 8.6 x 106 bacteria/ml, while MPN indicates:11x 102; 4.3 x 101; 0.73 x 101 dan 11 x 102 bacteria/ml, respectively. Six isolates bacteria were identified atstation A (A1, A2, A3, A4, A5, and A6), and four isolates in station B,C and D. Isolates A1, A2, A3, A4, B1,B2, C1, C2, D1 and D2 are gram positive, while A5, A6, B3, B4, C3, C4, D3 and D4 are gram negative.Isolates A1, A2, A4, B1, B2, C1, C2, D1 and D2 form spore, on the other hand isolates A3, A5, A6, B3, B4,C3, C4, D3 and D4 not. Identifed isolates show similar characteristics of genera Escherichia, Bacillus, Micrococcus,Pseudomonas and Streptomyces. Filtration system is in vapour condition.Key words: marine bacteria, Trochus niloticus, Tridacna squamosa

oai:ojs.ejournal.undip.ac.id:article/11315 2020-04-17T06:03:50Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/11315 2020-04-17T06:03:50Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 3 (2016): Ilmu Kelautan; 143-150 Muslim, Muslim; Oceanography Study Program, Diponegoro University, Suseno, Heny; Marine Radioecology Group, Center for Radiation Safety Technology and Metrology - National Nuclear Energy Agency Saodah, Siti; Oceanography Study Program, Diponegoro University, 2016-09-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/11315 en Karimunjawa islands are located in the middle of the Java Sea, approximately 83 km northwest of Jepara city. These islands have become an Indonesian marine tourism destination and since 2001 had been designated as a national park. The Indonesian government has chosen Muria peninsula in the district of Jepara, Indonesia as a site for a potential nuclear power plant (NPP). The purpose of this study was to determine the current level of radiocesium (137Cs) activity and forecast its spread if an NPP is operated at Jepara. To determine the distribution of 137Cs in Karimunjawa waters, a sampling of water was done in six stations. Simulation modeling was used to map the distribution of 137Cs should an NPP be constructed in Jepara. The results showed that 137Cs activity in Karimunjawa waters ranges from 0.12 to 0.39 mBq.L-1 with an average of 0.24 mBq.L-1. This value is slightly higher than previous studies in the coastal waters of Gresik, which had an average activity of 0.200 mBq.L-1 because the waters around Karimunjawa have a lower dilution rate than the coastal waters of Gresik. However, these values were considerably lower than those in the waters of Northeast Japan before the Fukushima nuclear power plant accident which registered 137Cs activity at 2-3 mBq.L-1.This indicates that 137Cs in Karimunjawa is not entirely from Fukushima rather from the global fallout. The 137Cs distribution model suggests that after 15 days, a leakage in the Muria Peninsula nuclear plant will not contaminate Karimunjawa waters because the current in the Java Sea is relatively weak and dominant in the westward direction. Thus, when an NPP leak only runs for 15 days, Karimunjawa waters remain safe.Keyword: 137Cs, Karimunjawa, NPP, modeling, Muria Peninsula

oai:ojs.ejournal.undip.ac.id:article/67713 2026-02-27T19:11:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/67713 2026-02-27T19:11:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 1 (2026): Ilmu Kelautan; 61-70 Menajang, Febry Susane Ivonne; Fisheries Resources Management, Faculty of Fisheries and Marine Sciences, Sam Ratulangi University Rondonuwu, Ari Berty; Fisheries Resources Management, Faculty of Fisheries and Marine Sciences, Sam Ratulangi University Kambey, Alex Denny; Fisheries Resources Management, Faculty of Fisheries and Marine Sciences, Sam Ratulangi University Kepel, Rene Charles; Fisheries Resources Management, Faculty of Fisheries and Marine Sciences, Sam Ratulangi University 2026-03-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/67713 DNA barcoding; COI gene; first record; Paracentropogon rubripinnis; Nematalosa come; estuarine fish en The Totok and Makalo River estuaries in North Sulawesi, Indonesia, serve as vital habitats teeming with fish biodiversity, supporting coastal ecosystems and local fisheries. This study aimed to identify fish species and elucidate their genetic relationships through DNA barcoding of the Cytochrome Oxidase I (COI) gene. Fish samples were collected from both estuaries using nets and traps, followed by molecular analysis involving polymerase chain reaction (PCR) amplification and Sanger sequencing. The results confirmed the presence of 11 fish species, including Osteomugil engeli, Polydactylus plebeius, and Gazza minuta, with high identification accuracy (over 98% sequence similarity to reference databases). Notably, Paracentropogon rubripinnis and Nematalosa come were recorded for the first time in North Sulawesi waters, expanding the known distribution of these species. Significant genetic variation was detected in P. rubripinnis, potentially indicating cryptic speciation or local adaptation to environmental gradients. Phylogenetic analysis revealed close genetic affinities between certain species and populations from Taiwan and Bangladesh, suggesting historical migration patterns or shared ancestry, possibly facilitated by ocean currents. These findings underscore the rich genetic diversity in these estuaries, which are influenced by factors like salinity, temperature, and anthropogenic pressures. The study emphasizes the urgency of conservation strategies, including habitat protection and sustainable fishing practices, to preserve biodiversity and maintain ecosystem services. By providing baseline data on species composition and genetic connectivity, this research contributes to broader efforts in marine biodiversity monitoring and informs policy for coastal management in Indonesia's biodiversity hotspots. 

oai:ojs.ejournal.undip.ac.id:article/2268 2012-02-29T00:02:02Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2268 2012-02-29T00:02:02Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 3 (2005): Jurnal Ilmu Kelautan; 119-125 Hartati, Retno; Laboratorium Biologi Kelautan, Jurusan Ilmu Kelautan, Universitas Diponegoro Semarang Widowati, Ita; Laboratorium Biologi Kelautan, Jurusan Ilmu Kelautan, Universitas Diponegoro Semarang Ristadi, Yoki; Laboratorium Biologi Kelautan, Jurusan Ilmu Kelautan, Universitas Diponegoro Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2268 en Kerang Totok (Polymesoda erosa) merupakan jenis bivalvia yang banyak ditemukan di kawasan hutan mangrove di Segara Anakan, Cilacap. Tujuan penelitian ini adalah untuk mengetahui struktur gonad kerang totok pada beberapa tingkat kematangan gonad melalui studi histologis. Enampuluh sampel kerang totok diambil dari Pulau Gombol, Laguna Segara Anakan, Cilacap, selama bulan Mei sampai Agustus 2002 untuk diamati gonadnya secara makroskopis dan histologis. Hasil penelitian menunjukkan bahwa pada sampel kerang jantan dan betina ditemukan tiga tingkat kematangan gonad dan stadia gonad yang Belum dapat diidentifikasi jenis kelaminnya. Diameter oosit meningkat sejalan dengan tingkat kematangan gonadnya dengan kisaran 38 &ndash; 100 &mu;m. Diameteroosit rata-rata pada tigkat kematangan gonad I, II dan III berturut-turut adalah 58,8 &mu;m; 66,4 &mu;m and 77,2 &mu;m.Kata kunci : Histologi, gonad, tingkat kematangan gonad, Polymesoda erosaMangrove clam, Polymesoda erosa is an economically valuable bivalvia species which is commonly consumed and has a potential to be cultured in Indonesia. The aim of this research was to understand gonad structure ofthe clams at different gonad maturity stages by histologycal study. The samples were taken monthly on May to August 2002 at Gombol iskand of Laguna Segara Anakan, Cilacap. Sixty samples were used examinevisually for gonad maturity and then were studied histologically. The results of present works revealed that there were 3 gonad maturity stage of the samples both at female and male samples as well as unidentifiedsex samples. Diameter of oocytes increased following the maturity of the gonad. The rage of diameter oocytes wer 38 &ndash; 100 &mu;m. Average diameter of oocyte during gonad maturity stage 1, 2 and 3 were 58,8 &mu;m; 66,4 &mu;m and 77,2 &mu;m respectively.Key words : Histology, gonad, maturity stage, Polymesoda erosa

oai:ojs.ejournal.undip.ac.id:article/28728 2021-10-13T00:57:09Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/28728 2021-10-13T00:57:09Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 3 (2020): Ilmu Kelautan; 103-109 Yuniati, Renni; Dermatology and Venereology Department, Faculty of Medicine, Diponegoro University Sulardiono, Bambang; Aquatic Resources Department, Fisheries and Marine Science Faculty, Diponegoro University 2020-09-02 21:15:51 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/28728 sea cucumber; Spirulina; inflammation; diclofenac; edema inhibition rate en Sea cucumber, Holothuria scabra, can be found abundantly in Indonesian seas, which is also known to possess several medicinal properties. Spirulina platensis is another marine resources that has recently been extensively researched for its medicinal ability, such as anti-inflammatory effect. This study aims to evaluate the efficacy of H. scabra extract combined with S. platensis extract in reducing inflammation. This study uses male Wistar rats as the study animal. Inflammation was induced by injecting carrageenan solution into the mice paw. Combination of H. scabra and S. platensis extract with various combination ratio (1:1; 1:2; and 2:1) was applied to the mice paw. Diclofenac sodium was used as the standard control therapy. Edema inhibition rate and anti-inflammatory efficacy were measured by analyzing the edema size and calculating the edema difference. Combination of H. scabra and S. platensis with 1:1 ratio has the largest edema inhibition volume compared to the other treatments. H. scabra and S. platensis combination outperforms the positive diclofenac sodium control group in terms of edema inhibition. The highest anti-inflammatory effect is obtained in the combination of H. scabra and S. platensis with 1:2 ratio, however, the anti-inflammatory efficacy is not as potent as the positive control. The effectivity of Holothuria scabra and Spirulina platensis extract in reducing the edema might be caused by their ability to reduce the levels of several inflammatory markers, including IL-6, NO, MMP9, and COX-2. This result suggests that H. scabra and S. platensis combination has anti-inflammatory effect shown in mice paw edema model.

oai:ojs.ejournal.undip.ac.id:article/13848 2021-10-13T05:32:07Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/13848 2021-10-13T05:32:07Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 3 (2017): Ilmu Kelautan; 121-125 https://ejournal.undip.ac.id/index.php/ijms/article/download/13848/32853 https://ejournal.undip.ac.id/index.php/ijms/article/download/13848/32854 Muhaemin, Moh; University of Lampung Soedharma, Dedi; Bogor Agricultural University (IPB) Madduppa, Hawis H; Bogor Agricultural University (IPB) Zamani, Neviaty Putri; Bogor Agricultural University 2017-08-22 13:09:25 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/13848 en Glutathione (GSH), as a wide range of low molecular weight, which found in marine microalgae and event bacteria, are essential to prevent photooxidation and productivity loss from these Radical Oxigen Species (ROS). Symbiodinium, endo-symbiont of corals, were exposed with different UV radiation combined with irradiance treatments to explore biomass specific initial response. Intracellular glutahione was observed as potential adaptive response of Symbiodinium population under environmental specific stress. The result showed that GSH production increased significantly with increasing irradiance and/or UV levels. GSH concentration was fluctuated among populations exposed by different irradiance treatments, but not effected by UV and irradiance exposure. GSH production as a response of UV exposure was higher than irradiance treatments. Both these high correlative fluctuation of intracellular GSH production and the presence of both treatments indicated protective specific adaptation of Symbiodinium under specific environmental stress, respectively. Keywords: zooxanthellae, irradiance, glutathione (GSH), corals, Fungia

oai:ojs.ejournal.undip.ac.id:article/2299 2017-08-19T22:46:16Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2299 2017-08-19T22:46:16Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 4 (2011): Ilmu Kelautan; 211-218 Wijaya, Yushinta; Fakultas Ilmu Kelautan dan Perikanan Universitas Hasanuddin, Jalan perintis Kemerdekaan Km 10 Tamalanrea Makassar. No telp/Fax:0411-586025. HP:08152521799, email: fyushinta@yahoo.com Aslamyah, Siti; Fakultas Ilmu Kelautan dan Perikanan Universitas Hasanuddin, Jalan perintis Kemerdekaan Km 10 Tamalanrea Makassar. No telp/Fax:0411-586025. HP:08152521799 Usman, Zainal; Sekolah Usaha Perikanan Menengah Negeri Kab. Bone, Sul-sel Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2299 en Salah satu teknologi produksi kepiting cangkang lunak adalah menggunakan vitomolt untuk menstimulasi molting.&nbsp; Penelitian bertujuan menganalisis respon molting, pertumbuhan, dan mortalitas kepiting bakau setelah diberikan vitomolt melalui injeksi dan pakan buatan. Penelitian dilaksanakan pada bulan Mei - Juli 2011, di Crabs Research Station yang terletak di Kabupaten Maros. Ada tiga perlakuan suplementasi vitomolt, yakni; secara tunggal melalui injeksi, kombinasi injeksi-pakan buatan, dan tanpa suplementasi vitomolt (kontrol), Hasil penelitian menunjukkan bahwa suplementasi vitomolt melalui injeksi dengan dosis 15 &micro;g/g kepiting memberikan respon persentase molting tertinggi, yakni (84,00&plusmn;5,48%), namun kombinasi injeksi (15 &micro;g/g kepiting) dan pakan buatan (32.375 mg/kg pakan) memberikan respon molting yang lebih cepat.&nbsp; Pada minggu kedua setelah perlakuan, kepiting yang molting pada perlakuan kombinasi adalah 14%, dibandingkan perlakuan lainnya, masing-masing 8% untuk perlakuan secara tunggal melalui injeksi dan 2% untuk kontrol.&nbsp; Suplementasi vitomolt tidak memberikan pengaruh yang signifikan terhadap pertumbuhan setelah molting, namun memberikan pengaruh yang siginifikan pada mortalitas.&nbsp; Mortalitas kepiting yang mendapat suplementasi vitomolt lebih rendah (6-8%) dibandingkan tanpa suplementasi vitomolt (24%). Kata kunci: vitomolt, injeksi, pakan buatan, kepiting cangkang lunak &nbsp; One of the soft shell crab production technology is by application vitomolt to stimulate molting. The study aims to analyze the response of molting, growth, and mortality of mangrove crabs after being given vitomolt through injection and artificial feed. The experiment was conducted between May-July 2011, at Crabs Research Station in Maros Regency. There were two treatments of vitomolt and a control in this experiment, namely single treatment by injection, combination treatment by injection-artificial feed, and without vitomolt supplementation (control),&nbsp; Results showed that supplementation of vitomolt through injection at a dose of 15 mg / g crab had highest percentage of molting (84.00 &plusmn; 5.48%), but a combination among injection (15 &micro;g / g of crab) and artificial feed (32 375 mg / kg of feed) give faster molting response.&nbsp; On the second weeks after treatment, there were 14% of crab had been molting in combination treatment, compared other treatments, respectively 8% for a single treatment by injection and 2% for control. &nbsp;Vitomolt supplementation did not have a significant influence on growth after molting, but it gives a significant effect on mortality. Mortality of crabs that got vitomolt supplementation was lower (6-8%) compared without vitomolt supplementation (24%). Key words: vitomolt, Injection, artificial feed, soft shell crab

oai:ojs.ejournal.undip.ac.id:article/38050 2021-10-13T00:50:57Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/38050 2021-10-13T00:50:57Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 2 (2021): Ilmu Kelautan; 87-94 Bachtiar, Imam; Department of Science Education, FKIP, Universitas Mataram Odani, Shingo; Faculty of Letters, Chiba University 2021-06-01 13:34:59 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/38050 bau nyale; Lombok; Polychaete; swarming; cultural tourism; prediction, hypothesis en Mass spawning dates of nyale worms (Eunicidae) have been scientifically predictable since 2019. The month of spawning is consistently following the pattern of the February full moon, while the date of spawning is consistently on the 20th of the lunar calendar. There are particular years with February only spawning, March only spawning, and split spawning in both February and March. The existing prediction of the split spawning, however, was constructed with very little available data. The present study aimed to revisit the split spawning prediction using the Metonic cycle, a 19-year lunisolar cycle. The results show that the spawning prediction very much follows the Metonic Cycle. There are minor dates on split spawning to be revised, when February full moon rises on 14th February. The revised hypothesis is that split spawning is very likely to occur when the full moon rises between the 7th to 13th of February. When February full moon appears before the 7th of February, single spawning will take place on the fifth day after the March full moon.  When February full moon befalls after the 13th of February, single spawning will occur on the fifth day after the February full moon. The revised prediction method has only 2 (two) deviances in 114 years of simulation dates. The present study is the first to suggest the link between Polychaete spawning patterns and the Metonic Cycle.

oai:ojs.ejournal.undip.ac.id:article/7212 2020-04-17T05:59:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7212 2020-04-17T05:59:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 1 (2014): Ilmu Kelautan; 19-26 Solihuddin, Tubagus; Puslitbang Sumber Daya Laut dan Pesisir, Jl. Pasir Putih 1, Ancol Timur, Jakarta, Indonesia 11048 Kusumah, Gunardi; Loka Penelitian Sumber Daya dan Kerentanan Pesisir, Jl. Padang-Painan Km.16, Padang, Indonesia 25611 2014-03-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7212 en Peningkatan produk-produk perikanan melalui industrialisasi dengan menekankan pada pengembangan perikanan budidaya laut yang membutuhkan data pendukung lingkungan laut termasuk sediment dasar laut. Penelitian lingkungan sedimen di Perairan Pemangkat bertujuan untuk mendapatkan informasi mengenai komposisi sedimen permukaan dasar laut, konsentrasi mineral logam dan total padatan tersuspensi. Beberapa sampel sedimen permukaan telah diambil pada transek yang telah ditentukan di sekitar Pantai Pemangkat dan telah dilakukan analisis mengikuti prosedur analisis granulometri, sedangkan metode AAS diterapkan untuk menentukan konsentrasi mineral logam. Selain itu, beberapa sampel air laut juga telah diambil menggunakan botol Nansen untuk mendapatkan total padatan tersuspensi. Informasi tersebut sangat bermanfaat bagi manager dan atau pemerintah daerah dalam menilai, merencanakan dan mengelola kawasan peisir dan lingkungan laut. Standar kualitas air yang dikeluarkan oleh Kementerian Negara Lingkungan Hidup digunakan sebagai acuan untuk mengkalibrasi hasil penelitian. Studi ini menunjukkan dominasi sedimen lumpur dan tingginya konsentrasi TSS, mengindikasikan bahwa Perairan Pemangkat tidak direkomendasikan untuk pengembangan kawasan perikanan budidaya laut. Kata kunci: sedimen, mineral logam, total padatan tersuspensi Increasing fisheries products through industrialisation with emphasizing on marine aquaculture development requires supporting data on marine environments including seafloor sediments. Research on sedimentary environments of the inshore of Pemangkat region was aimed to obtain seafloor sediment composition, heavy metal and total suspended solid (TSS) concentrations. Some surface sediments samples were collected in transects across the selected Pemangkat coast and analysed following the procedure of granulometric analysis, whilst AAS (Atomic Absorption Spectroscopy) was applied to determine heavy metal concentrations (e.g. Hg, Pb, Cd, Cu, and Zn). Additionally, water samples were also collected using Nansen bottle to derive TSS concentrations. This sort of information will be valuable for manager and/or local government to assess, plan and manage coastal zone and marine environment. A standard of water quality issued by the State Ministry for Environment was then used as a reference to calibrate the results. This study showed silt (mud) sediment dominance and high TSS concentrations, indicating that the inshore Pemangkat region was not highly recommended for marine aquaculture development. Keywords: sediment, heavy metal, total suspended solid

oai:ojs.ejournal.undip.ac.id:article/53798 2024-12-10T15:14:41Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/53798 2024-12-10T15:14:41Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 3 (2024): Ilmu Kelautan; 414-424 Ernawati, Ernawati; Fishery Products Technology, Faculty of Agriculture, Yudharta University Adam, Moh. Awaludin; Research Center for Marine and Land Bioindustry, National Research and Innovation Agency Faculty of Science and Technology, Ibrahimy University Widiastuti, Irawati Mei; Aquaculture, Faculty of Animal Husbandry and Fisheries, Tadulako University Insivitawati, Era; Polytechnics of Marine and Fisheries, Ministry of Maritime Affairs and Fisheries Nikmatullah, Muhammad; Research Center for Biology, National Research and Innovation Agency Riyadi, Putut Har; Department of Fisheries Post Harvest Technology, Faculty of Fisheries and Marine Science, Universitas Diponegoro Azra, Mohamad Nor; Institute of Marine Biotechnology, Universiti Malaysia Terengganu 2024-09-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/53798 anti-menopausal; bioactive; estrogen; phytoestrogen; Rhizophora en Mangrove is a tropical forest that stores millions of benefits ecologically, biologically, and economically. Rhizophora fruit extract contained bioactive compounds components derived from natural ingredients and scientifically proven to have positive effects on health, among others, to prevent cancer, etc. This study aimed to investigate the potential of R. mucronata ethanol extract as an estrogen receptor β agonist for anti-menopausal purposes. Using a Completely Randomized Design (CRD), 25 mice were divided into five groups: a normal control group (NK), an ovariectomy control group (Ovx), and three ovariectomized groups (Ovx D1, D2, and D3) receiving different doses of the extract (200, 400, and 800 mg.kg-1 BW, respectively). The extract was administered orally, and various measurements were taken, including flavonoid content, using densitometry thin layer chromatography (TLC) and FTIR for functional group characterization. The study found a high rutin content (13.29%) in the fruit. Twelve compounds with potential estrogenic activity were identified, which were analyzed using SwissAdme software. Estradiol levels in serum increased with higher doses of the extract over four weeks. In silico and in vivo analysis showed 5 (five) selected compounds from the ethanol and ethyl acetate fractions with highest (most negative) to lowest binding affinity as candidates for anti-menopausal drugs. The administration of R. mucronata Lam. fruit extract in Ovx D1, Ovx D2 and Ovx D3 gave significantly different effects to each other on rat blood serum estradiol hormone levels. In this study, the dose 400 mg.L-1 BW rat gave P&gt;5 increasing blood serum estradiol levels of ovariectomized rats.

oai:ojs.ejournal.undip.ac.id:article/1789 2017-08-19T22:48:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1789 2017-08-19T22:48:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 4 (2010): Ilmu Kelautan; 221-230 Siswanto, Aries Dwi; Jurusan Ilmu Kelautan, Universitas Trunojoyo Madura, PO. BOX 2, Jl Raya Telang, Kamal, Bangkalan, Jawa Timur, Telp +62-31-3013234, 3011146, fax +62-31-3011506 Emali:ariesdwisiswanto@yahoo.co.id Pratikto, Widi Agoes; Jurusan Teknik Kelautan, ITS, Kampus ITS, Keputih, Surabaya, 60111, Indonesia Email: pratikto@oe.its.ac.id, suntoyo@oe.its.ac.id Suntoyo, Suntoyo; Jurusan Teknik Kelautan, ITS, Kampus ITS, Keputih, Surabaya, 60111, Indonesia Email: pratikto@oe.its.ac.id, suntoyo@oe.its.ac.id 2012-02-11 06:29:58 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1789 id Perairan pantai di Kabupaten Bangkalan merupakan kawasan strategis pengembangan kawasan pesisir, terutama pasca Jembatan Suramadu. Meningkatnya pemanfaatan areal pantai berpotensi menimbulkan gangguan terhadap ekosistem dan keseimbangan pantai, salah satunya dengan konversi tanaman bakau menjadi areal pertambakan maupun pemukiman. Luasan bakau yang rendah memiliki kerentanan relatif tinggi terhadap gelombang dan arus laut yang potensial menyebabkan erosi, sehingga terjadi kemunduran garis pantai (retrogration coast) yang bersifat erosi aktif. One-line model berdasarkan persamaan CERC merupakan salah satu metode pemodelan numerik untuk mengetahui perubahan garis pantai, dengan salah satu parameter utama adalah gelombang. Angin digunakan untuk mendapatkan properties gelombang, dan dilakukan analisa refraksi. Model divalidasi menggunakan citra Landsat. Estimasi model menunjukkan ada perubahan garis pantai pada hampir sebagian besar sel, terutama pada sel 96 dan 316. Garis pantai di lokasi penelitian relatif stabil, kecuali di daerah dermaga Kamal dan sekitar Suramadu.Kata Kunci : Oneline-model, Stabilitas pantai&nbsp;The Shoreline Stability Analysis at Bangkalan Regency. Coastal waters in the Bangkalan regency made up a strategic area for the development of coastal areas, especially after the Suramadu bridge was built. Development of the coastal area cause an increase the utilization of coastal areas in which it might cause to interference of the ecosystem and the beach equilibrium, one of them is change the mangrove ecosystem into both aquaculture and residences. The small mangrove area has a vulnerability is relatively high as compared to the waves and ocean currents causing erosion. As a result, there are retrogration coast that are actively erosion. One-line model based on CERC equation is one of the numerical modeling to know shoreline changes with main parameters is wave. Wind speed used to wave properties for refraction analyze. The validation of model used satellite imagenary. The model prediction showed no changes in the shoreline for the most of cells, especially at 96 and 316 cells Result of model was any shoreline changes The shoreline in this study relatively stable, except in the Kamal dock area and surrounding Suramadu bridge Key words : Oneline-model, Coastal stability

oai:ojs.ejournal.undip.ac.id:article/19322 2019-03-26T05:29:35Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19322 2019-03-26T05:29:35Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 1 (2002): Jurnal Ilmu Kelautan; 43-50 Listyani, Theopila; Jurusan Teknik Geologi, Sekolah Tinggi Teknologi Nasional, Yogyakarta Rochaddi, Baskoro; Jurusan Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro 2008-01-08 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19322 en Keberadaan air tanah asin di daerah pesisir Jakarta seringkali dianggap sebagai akibat adanya intrusi air laut pada akifer airtanah. Kandungan isotop oksigen dan hidrogen contoh airtanah yang didukung oleh data TDS airtanah, kondisi geologi dan hidrogeologi dianalisis untuk mengetahui genesa airtanah asin di daerah penelitian. Hasil analisis menunjukkan bahwa : Airtanah asin pada Akifer II merupakan air konat. khususnya yang berada di utara garis pantai purba 4.500 tahun lalu. Airtanah yang terletak an tara garis pantai 4.500 dan 40.000 tahun yang lalu merupakan air konat yang sudah dipengaruhi recharge lokal. Sedangkan airtanah yang terletek di selatan garis pantai 40.000 tahun lalu merupakan air konat yang bercampur dengan airtanah yang telah mengalami evolusi.Kata kunci: airtanah asin, lsotop, air konet, evolusi.  Saline groundwater in coastal area of jakarta oftenly belived as a result of sea water intrusion to groundwater aquifer. Oxygen dan hydrogen isotope composition together with data on TDS, geology and hydrogeology have been analyzed to understand the origin of saline groundwater in the research area. Result of this analysis shows that: Saline groundwater in Aquifer II is connate water, especially in the north of paleo coast line of 4,500 years ago. Groundwater between paleo coast line of 4,500 and 40.000 years ago is connate water which has been mixed with local recharge. Whereas, groundwater in the south of paleo coast line of 40,000 years ago is connate water which has been mixed with evolutionary groundwater.Keywords: saline groundwater, isotope, connate water, evolution. 

oai:ojs.ejournal.undip.ac.id:article/2340 2012-03-03T05:38:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2340 2012-03-03T05:38:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 4 (2004): Jurnal Ilmu Kelautan; 206-210 Erlina, Antik; Balai Besar Pengembangan Budidaya Air Payau, Jepara Amini, Sri; Pusat Riset Pengolahan Produk dan Sosial Ekonomi Kelautan dan Perikanan, Badan Riset Kelautan dan Perikanan, Jakarta Endrawati, Hadi; Laboratorium Biologi Laut, Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Jalan Prof. Soedarto, UNDIP Tembalang, Semarang, 50275 Zainuri, Muhamad; Laboratorium Biologi Laut, Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Jalan Prof. Soedarto, UNDIP Tembalang, Semarang, 50275 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2340 en Potensi fitoplankton sebagai pakan alami bagi biota laut di derajat tropic diatasnya telah diketahui. Selanjutnya upaya kultivasi secara massal dilakukan untuk pemenuhan kebutuhan hatchery. Penelitian ini bertujuan untuk mengetahui nilai nutrisi pakan alami Skeletonema costatum, Thallassiosiera sp, Chlorella sp. dan Chaetoceros calcitrans dari hasil produksi kultivasi massal. Laboratorioum Alga Pakan Alami, Balai Besar Pengembangan Budidaya Air Payau Jepara. Isolate 5 ml dari setiap jenis fitoplankton digunakan sebagai sumber pada kultivasi dengan media gallon 20 liter selama 15 hari atau sampai dengan tercapainya puncak populasi. Transfer ke media 1 ton dilakukan setelah puncak populasi tersebut. Kedua jenis media memanfaatkan pupuk dari formula Conwy. Densitas fitoplankton diamati setiap hari dengan menggunakan haemocytometer. Setelah tercapai puncak populasi, maka fitoplankton akan dipanen dengan menyaringnya dengan 2 &mu;m. Hasil panendigunakan untuk analisis nutrisi. Kandungan nutrisi fitoplankton menunjukkan kisaran nilai protein : 21.85 &ndash; 37 % ; lemak : 2.41 &ndash; 10 % dan karbohidrat : 17 &ndash; 21 %. Sedangkan asam lemak menunjukkan kisaran nilai yang cukup tinggi, khususnya pada omega 3 : 0.911 &ndash; 3.738 % ; omega 6 : 15.591 &ndash; 38.002 % dan omega 9 : 0.292&ndash;15.112 %. Nilai nutrisi tersebut tidak berbeda dengan kultivasi laboratoris.Kata kunci : Kandungan Nutritif, Alga, Skeletonema costatum, Thallassiosiera sp, Chlorella sp,. Chaetoceros calcitrans, Kultivasi Massal.The potential mean of the phytoplankton as natural feed for higher tropic level biota in the sea is already known. While the study to mass cultivation as the requirement for natural feed of marine biota larvae wasalready develop in the hatchery, and need to explore into mass cultivation for an alternative purpose. The aim of the study is to determine the nutrition contents of four type phytoplankton, Skeletonema costatum,Thallassiosiera sp, Chlorella sp. and Chaetoceros calcitrans based on mass cultivation. The research was conducted in the Laboratory of Natural Food, Brackishwater Aquaculture Development and Research Center,Jepara. The 5 ml isolate of each phytoplankton were cultivate in the 20 litter gallon for 15 days or until the reach of the density. After the peak density of every phytoplankton, it will transfer into 1 ton media. Eachtreatment was three replicate. Each approach using the enrichment media based on Conwy formula. The density was daily monitor using haemocytometer. After the reach of peak population density, the algae was filtered using 2 &mu;m screen. The algae then store in the refrigerator for nutritive determination. The average nutritive content in the algae show a range value of protein : 21.85 &ndash; 37 % ; lipid : 2.41 &ndash; 10 % andcarbohydrate : 17 &ndash; 21 %. While the lipid acid show a high range value, especially for omega 3 : 0.911 &ndash; 3.738 % ; omega 6 : 15.591 &ndash; 38.002 % aand omega 9 : 0.292 &ndash; 15.112 %. The nutritive value is notdifferent than the one of laboratory cultivation.Key words : Nutritive Contents, Algae, Skeletonema costatum, Thallassiosiera sp, Chlorella sp,. Chaetoceros calcitrans, mass cultivation.

oai:ojs.ejournal.undip.ac.id:article/41026 2022-06-18T08:23:33Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/41026 2022-06-18T08:23:33Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 1 (2022): Ilmu Kelautan; 61-72 Soemodinoto, Arisetiarso; Oceans Program, Yayasan Konservasi Alam Nusantara Pedju, Mirza; Freelance Consultant 2022-03-02 15:15:07 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/41026 MPA; marine protected area; evaluation; effectiveness; policy; regulations en The management effectiveness evaluation of marine conservation areas (MCAs) in Indonesia is often conducted assuming that they are likely to be evaluated periodically. However, for good and reliable results, it is recommended to perform the evaluability assessment prior to any evaluation to determine whether an MCA can be evaluated or not. This study aims to assess the evaluability of MCAs managed by the Ministry of Marine Affairs and Fisheries (MMAF) by reviewing their management plans and effectiveness evaluation tools. By employing a qualitative approach, this study found that (i) the management plans are not conceived to support an effective management of MCAs in the field or the evaluation of management effectiveness; and (ii) the current guidelines for evaluating MCA management effectiveness do not evaluate the expected achievements of management actions relative to biodiversity conservation goals and objectives. As a result, MCAs under MMAF direct supervision are not evaluable, and hence, the evaluations are pointless from a biodiversity conservation perspective. To address this discrepancy, it is recommended that the management effectiveness evaluation should only be applied to MCAs with an effectiveness-oriented management plan and should employ tools or guidelines that are devised to evaluate the achievement of MCA conservation goals and objectives.

oai:ojs.ejournal.undip.ac.id:article/460 2012-02-27T07:01:14Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/460 2012-02-27T07:01:14Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 2 (2009): Jurnal Ilmu Kelautan; 84-88 Manik, Henry M. 2010-11-03 12:57:45 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/460 en Indonesia merupakan salah satu negara yang memiliki potensi perikanan tuna yang besar. Pendugaan populasi ikan tuna selama ini menggunakan statistik perikanan. Pendekatan statistik memiliki keterbatasan antara lain membutuhkan waktu yang lama, akurasi yang diragukan dan luas cakupan perairan yang sempit. Untuk itu perlu diupayakan metode baru yang memberikan informasi yang akurat, komprehensif, mutakhir dan berkelanjutan tentang ikan tuna. Salah satu metode mutakhir yang dapat mengetahui kondisi ikan tuna adalah metode akustik. Penerapan teknologi akustik memiliki kelebihan antara lain mudah dalam pengoperasian instrumen, akurasi dan presisi yang tinggi, dapat melakukan pemantauan dan kuantifikasi stok ikan secara kontinu, in situ dan real time dalam pemrosesan serta analisis data. Untuk aplikasi metode akustik tersebut maka penelitian dasar untuk menghitung sifat refleksi akustik atau dikenal dengan Target Strength (TS) dari ikan tuna dilakukan menggunakan echo sounder. Hasil yang diperoleh adalah hubungan nilai TS terhadap panjang ikan dan volume gelembung renang terhadap ikan tuna mata biru (Thunnus obesus) dan tuna sirip kuning (T. albacares). Target Strength (TS) ikan tuna mata biru lebih besar 3 dB dari ikan tuna sirip kuning pada ukuran yang sama. Hasil ini berhubungan dengan perbedaan volume gelembung renang dari kedua spesies tersebut. Hubungan antara TS dan volume gelembung renang ikan tuna dibahas dalam hasil penelitian ini. Implikasi hasil riset ini adalah tersedianya data dasar penelitian akustik terhadap ikan tuna di Indonesia.Kata kunci: ikan tuna, target strength (TS), split beam echo sounder&nbsp;Indonesia has a big potency of tuna fisheries. Unfortunately, a quantification method for tuna fish resources is not understood well. Usually, the estimation of tuna fish population using statistic method. This method has a limitation such&nbsp;as time consuming, less accuration and small area covered. For this reason, a novel method was used to give&nbsp;the high accuration, comprehensiveness, modern technology and real time monitoring of tuna fisheries. One of&nbsp;the modern method to detect and quantify tuna is underwater acoustics. The application of acoustic method has many advantages such as easy to operate the instrument, high accuration and precision, continuously monitoring and quantification, real time data processing and analysis. For this purpose, a research programme was carried out in order to study the acoustic wave reflection or target strength (TS) of tuna fish using an echo sounder (QES). The relationships between TS to fork length (FL) and swimbladder volume, for bigeye tuna (Thunnus obesus) and yellowfin tuna (T. albacares) are investigated. The TS of bigeye tuna was about 3 dB higher than yellowfin tuna when comparing species at the same size. The result can be correlated to the swimbladder volume difference between species. The relationship between TS and swimbladder volume was quantified for both species. The implication of this research is the avalaibility of tuna fish database using underwater acoustic technique.&nbsp; &nbsp; Key words :&nbsp;tuna fish, target strength, split beam echo sounder

oai:ojs.ejournal.undip.ac.id:article/8960 2017-10-27T08:50:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8960 2017-10-27T08:50:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 1 (2015): Ilmu Kelautan; 38-44 Ariyanti, Yanti; Department of Biology, Faculty of Mathematic and Natural Sciences, Bogor Agricultural University, Bogor 16680, Indonesia. Farajallah, Achmad; Department of Biology, Faculty of Mathematic and Natural Sciences, Bogor Agricultural University, Bogor 16680, Indonesia. Arlyza, Irma Shita; Research Center for Oceanography Laboratory, Indonesian Institute of Sciences (Pusat Penelitian Oseanografi, LIPI), Jakarta, Indonesia. 2015-03-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8960 en Cephalopholis merupakan salah satu genera terbesar dalam subfamili Epinephelinae yang memiliki banyak species. Secara fenotip, C. urodeta dewasa mirip dengan juvenil C. sonnerati karena memiliki ciri mencolok yaitu garis yang menyudut pada sirip ekor. Untuk memahami hubungan genetik pada spesies ikan ini, maka dilakukan analisis molekuler menggunakan ruas gen CO1. Sejumlah spesies ikan (famili Serranidae) dikumpulkan dari wilayah Sulawesi Selatan seperti Sinjai dan Kepulauan Selayar. Karakter fenotip diidentifikasi menggunakan buku katalog spesies kerapu dunia FAO, kemudian sampel yang diduga C. urodeta secara morfologi dipisahkan. Jaringan yang digunakan sebagai sumber DNA adalah jaringan otot bagian dorsal. Berdasarkan sebagian runutan gen CO1, diyakini bahwa sampel tersebut adalah C. urodeta. Runutan basa nukleotida dari sampel dibandingkan dengan 22 runutan basa nukleotida C. urodeta dari GenBank. Berdasarkan rekonstruksi pohon filogeni, C. urodeta dari Sinjai dan Kepulauan Selayar mengelompok dengan C. urodeta dari berbagai tempat seperti Polynesia, Mariana Utara, Filipina, pulau-pulau di sekitar Madagascar (Ouest, St. Gilles, Canyon, Cimetiere, Jaune) dan Adaman, sedangkan sampel dari Laut Arab di lepas pantai India berada pada cabang yang terpisah. Penelitian ini menyatakan bahwa C. urodeta yang melibatkan beberapa tempat dari berbagai perairan seperti Samudera Pasifik bagian Selatan (Polynesia), Samudera Pasifik bagian Utara (Northern Mariana), Laut China Selatan (Filipina), Teluk Bengal (Andaman), Laut Laccadive (reunion of Ouest, St. Gilles and Cimetiere), Laut Arab dan Indo Pasifik Barat (Indonesia) memiliki perbedaan jarak genetik yang kecil. Hal ini berimplikasi pada pemahaman pola migrasi spesies tersebut dan sebagai bahan pertimbangan pengambilan kebijakan konservasi. Kata kunci: Cephalopholis urodeta, CO1, filogenetik, Serranidae, Sulawesi Selatan Cephalopholis is one of the largest genera belonging to Subfamilly Epinephelinae, which has various species. Phenotypically, an adult C. urodeta similar to a juvenile of C. sonnerati, since both of them have a striking trait, two white oblique stripes or bands on the caudal fins. This work was conducted to investigate the genetic relationships of this species using CO1 gene segment. Fish were collected from several sampling point in South Sulawesi areas such as Sinjai and Selayar Island. The phenotypic characterizations were identified using the FAO species catalogue of groupers of the world, and the species that seemed to have C. urodeta morphology then separated. Tissue samples from dorsal muscle tissue were used as the source of DNA. Using part of the CO1 gene sequence, it can be confirmed that our samples are exactly C. urodeta species. The 22 C. urodeta sequences from GeneBank compared with our sequences. Interestingly, because based on the phylogenetic tree, our sequences clustered with the other C. urodeta sequences from several part of the world except the Arabian Sea off the coast of India, which is a separate branch. The present study reveals less genetic distance in C. urodeta than some other parts of the ocean as follows; South Pacific Ocean (Polynesia), North Pacific Ocean (Northern Mariana), South China Sea (Philippines), Andaman, west coast of Réunion Island, Arabian Sea and Indo West Pacific (Indonesia). This has implications for understanding the migration pattern of the species and may affect conservation policy decisions. Keywords: Cephalopholis urodeta, CO1, phylogenetics, Serranidae, South Sulawesi

oai:ojs.ejournal.undip.ac.id:article/67221 2025-06-25T07:35:55Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/67221 2025-06-25T07:35:55Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 2 (2025): Ilmu Kelautan; 183-191 https://ejournal.undip.ac.id/index.php/ijms/article/download/67221/222526 Kusuma, Hollanda Arief; Department of Electrical Engineering, Faculty of Engineering and Maritime Technology, Universitas Maritim Raja Ali Haji Suhendra, Tonny; Department of Electrical Engineering, Faculty of Engineering and Maritime Technology, Universitas Maritim Raja Ali Haji Ilhamdy, Aidil Fadli; Department of Fisheries Products Technology, Faculty of Marine Science and Fisheries, Universitas Maritim Raja Ali Haji Ilhami, Carel Candigia Sahid; Department of Electrical Engineering, Faculty of Engineering and Maritime Technology, Universitas Maritim Raja Ali Haji Setyono, Dwi Eny Djoko; Research Center for Food Technology and Processing, National Research and Innovation Agency Lubis, Muhammad Zainuddin; College of Oceanography and Ecological Science, Shanghai Ocean University Geomatics Technology Program, Politeknik Negeri Batam||Indonesia 2025-06-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/67221 Multiple Linear Regression; Visible Light; Infrared Light; Instrument; Seaweed en This study explores the spectral characterization of seaweed, Kappaphycus alvarezii, using the SparkFun Triad Spectroscopy Sensor AS7265x to assess the relationship between water content and light intensity. This research aims to provide a foundation for non-destructive monitoring of post-harvest seaweed quality using spectral techniques. The SeaSpec device was constructed using an ESP32 microcontroller, a TFT display, and the AS7265x sensor. Seaweed samples were collected from the coastal area of Karimun Islands and subjected to a controlled drying process at 40°C to determine the water content in the seaweed. The spectral data were recorded across 18 channels in the visible and infrared spectra, highlighting distinct patterns that correlate with varying moisture levels. A multiple linear regression analysis was employed to determine the contributions of individual spectral channels to water content prediction, revealing that each channel has its own unique contribution to the model. Coefficient of determination (R²), percentage error (%), and percentage accuracy (%) were also used to assess model performance. The results indicated that higher water content corresponds to increased light intensity. The analysis indicated that the visible spectrum outperformed the infrared spectrum in predictive accuracy, with an R² value of 0.79 compared to 0.61 for the infrared spectrum. This indicates that the visible light spectrum is more effective in predicting water content in K. alvarezii. The findings underscore the potential of spectral analysis as a reliable method for assessing the physico-chemical properties of seaweeds, advancing the use of optical sensors in aquaculture and environmental monitoring while paving the way for future research.

oai:ojs.ejournal.undip.ac.id:article/2218 2012-03-06T11:08:35Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2218 2012-03-06T11:08:35Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 3 (2006): Jurnal Ilmu Kelautan; 141-145 Muslim, Muslim; Department of Marine Science Diponegoro University, Semarang, Indonesia Telp. 62.24.7474698 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2218 en Distribusi 90Sr di daerah laut lepas dan pantai Korea-Jepang-Rusia-China telah diteliti sejak 30 Juni sampai 2 Agustus 2000. Pengambilan sampel permukaan air laut dilakukan di Laut China Timur, Laut Jepang (LautTimur), Laut Okhotsk dan Barat laut Samudera Pacific. Salinitas, temperatur dan konsentrasi 90Sr bervariasi dan tidak menunjukkan saling berhubungan. Temperatur lebih didominasi oleh pengaruh posisi lintang. Konsentrasi 90Sr banyak dipengaruhi oleh beberapa faktor seperti sumber limbah buangan radioaktif dan faktor fisika. Dilaut Jepang distribusi konsentrasi 90Sr lebih didominasi oleh pengaruh jarak dari tempat sumber pembuangan limbah radioaktif, tetapi di lokasi-lokasi lain dipengaruhi oleh faktor kondisi fisik.Kata kunci: 90Sr, laut lepas, daerah pantai, faktor fisika.Distribution of 90Sr in the high seas and coastal regions of Korea-Japan-Russia-China have been measured from 30 June 2000 to 2 August 2000. The surface seawaters were collected from East China Sea, Japan Sea (East Sea), Okhotsk Sea and Northwest Pacific Ocean. Salinity, temperature and 90Sr concentration were variable, and did not show correlation each others. The temperature levels dominantly influenced by latitude effect position. The 90Sr activities ranged from not detectable to 2.22 mBq/l (mean: 1.18, n:23). The distribution of 90Sr concentrations were more uniform in the coastal regions than in the high seas regions. The concentration of 90Sr in this study area were caused by some factors such as from source radioactive waste discharge and physical factors condition. The distribution 90Sr in Japan Sea generally was influenced by distance factor from radioactive waste discharge, but the other locations were influenced by physical factors condition.Key words: 90Sr, high seas, coastal regions, physical factors.

oai:ojs.ejournal.undip.ac.id:article/15084 2021-10-13T03:39:52Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/15084 2021-10-13T03:39:52Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 4 (2018): Ilmu Kelautan; 187-198 Jamaludin, Siani La; Postgraduate Biology Education Study Program, Pattimura University Rehena, Johanis Fritzgal; Biology Education Study Program, Faculty of Teacher Training and Education Science, Pattimura University Seumahu, Cecilia Anna; Biology Department, Faculty Mathematics and Science, Pattimura University Rumahlatu, Dominggus; Biology Education Study Program, Faculty of Teacher Training and Education Science, Pattimura University 2019-01-04 12:20:42 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/15084 Bekasang; Protease; Gonad Sea Urchins Pattimura University en Bekasang of gonad sea urchin is one of the traditional fermentation products which generally involves microorganism spontaneous fermentation. Fermented paste products have a long shelf life and are processed quite easily using protease enzymes. Good exploration of producing protease from bakasang is needed to obtain the protease enzyme-producing microorganism with different characters. The method used in this research is screening with clear zone, measuring the activity of crude extract of protease enzyme characterization of bacteria through gram staining. Identification of potential microorganisms through 16S rRNA sequence. The results showed that there were eight isolates of protease enzyme-producing bacteria (G1, G2, G3, G4, G5, G6, G7, and G8) indicated by clear zones around single-colonic bacterial streaks. Only five bacterial isolates (G1, G4, G6, G7, and G8) were tested for the enzyme activity. These isolates have characteristics of positive gram bacteria. The interpretation of the results of molecular analysis using PCR and BLASTN sequences of 16S rRNA gene from five bacterial isolates, showed the identity of bacteria as: G1 was Staphylococcus piscifermentans strain CIP103958 with 99% similarity; Isolate G4 was Staphylococcus saprophyticus strain ATCC 15305 with 99% similarity; Isolate G6 was Staphylococcus condimenti F-2 strain with 99% similarity; Isolate G7 was Bacillus amyloliquefaciens subsp. plantarum strain FZB42 with 99% similarity; And G8 isolates was Lactobacillus plantarum strain JCM 1149 with 99% similarity.

oai:ojs.ejournal.undip.ac.id:article/2413 2020-04-17T05:55:33Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2413 2020-04-17T05:55:33Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 1 (2012): Ilmu Kelautan; 8-14 Pratiwi, Rianta; Penelitian Oseanografi-Lembaga Ilmu Pengetahuan Indonesia (LIPI). Jln. Pasir Putih 1, Ancol Timur, Jakarta 14330.Tel/fax: 021.64715038, 021.64711848. E-mail: r_pratiwi_99@yahoo.com Astuti, Oce; Fakultas Perikanan dan Ilmu Kelautan, UNHALU Tel/fax:0401.393872. E-mail: oce-fish@yahoo.com Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2413 en &nbsp;Walaupun wilayah laut dan pesisir sangat penting untuk kehidupan rakyat dan bangsa Indonesia, secara nyata perairan Kendari belum digarap secara optimal, terutama kondisi dan potensi perikanan, khususnya kepadatan dan keanekaragaman krustasea. Penelitian ini bertujuan untuk mengungkapkan dan mengidentifikasi potensi sumber daya laut di pulau-pulau kecil disekitar perairan Kendari. Penelitian dilakukan dengan cara koleksi bebas menyusuri mangrove. Data yang diambil dari penelitian ini adalah data krustacea non ekomomis dan ekonomis serta data pendukung&nbsp; lingkungan (suhu, pH dan salinitas). Hasil penelitian menunjukkan parameter lingkungan di beberapa lokasi masih relatif baik untuk kehidupan krustasea di daerah mangrove. Diperoleh 377 individu, 15&nbsp; jenis, 12 famili dan 1 ordo individu krustasea. Kepadatan krustasea di setiap lokasi berbeda-beda. Indeks keanekaragaman (1,121-3,744) dan indeks keseragaman (0.360-0.610) termasuk sedang, yang menggambarkan bahwa penyebaran individu relatif sama serta indeks dominansi pada penelitian ini termasuk tinggi (0,190-0,620). Dengan diperolehnya data keanekaragaman krustasea di perairan Kendari sudah sepatutnya harus lebih dicermati lagi kondisi lingkungan dan keberadaan krustasea secara periodik karena krustasea merupakan salah satu rantai makanan yang juga penting di dalam ekosistem pesisir. Kata kunci: Krustasea, keanekaragaman, mangrove, perairan KendariAlthough the marine and coastal areas are very important for the life of the people and nation of Indonesia, Kendari waters significantly have not worked optimally, especially the condition and potential of fisheries, particularly the density and diversity of crustaceans. This study aims to reveal and identify the potential of marine resources in small islands around the waters of Kendari. Research carried out by way of free collection along the mangrove. Data from this study are from non economical, economical crustaceans and environmental data (temperature, pH and salinity) as well as to supporting the environmental. The results shows several areas of environmental parameters is still relatively good for the life of crustaceans in mangrove areas. Provided 377 individuals, 15 species, 12 families and 1 order of individual krustaseans. Krustasean densities at each location is different. Diversity index (1.121-3.744) and Similarity index (0,360-0,610) catagories in medium grade, which illustrates that the spread of crustacea is relatively the same. Index of dominance in this study was high (0.190-0.620). By obtaining data of&nbsp; diversity crustaceans in the waters of Kendari, should be more rutiny and &nbsp;should have been more better protecting the environmental conditions and also the presence of crustaceans periodically because crustaceans are one of the food chain are also important in the coastal ecosystem.Key words: Crustaceans, diversity, mangrove forests, waters Kendari

oai:ojs.ejournal.undip.ac.id:article/46014 2026-05-21T04:27:19Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/46014 2026-05-21T04:27:19Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 4 (2022): Ilmu Kelautan; 349-357 Alamsyah, Ridha; Aquatic Resources Management, Faculty of Agriculture, Universitas Muhammadiyah Sinjai Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University Zamani, Neviaty P.; Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University Bengen, Dietriech G.; Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University Nurjaya, I Wayan; Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University Soto, Derek; Department of Life Science, National Taiwan Normal University 2022-12-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/46014 Morphodynamics; variability; adaptability; future; survive en One of the determining variables that influences coral growth morphology is the aquatic environment. Reef corals are unusual organisms with plant-like development patterns. Reef growth is influenced greatly by the aquatic environment, particularly hydro-oceanography. The same type of coral can have different morphological forms. This mismatch in form can lead to type identification mistakes. There is still a lack of research on morphological changes as an impact of coral plasticity in responding to environmental variables. The goal of this work is to compile a bibliography of coral morphological plasticity studies. Publish or Perish (PoP) program locates the Scopus database and processes the articles. After screening, 101 of the 138 articles found in the Scopus database are eligible to be found. Mendeley reference manager software is then used to handle the selected references. After maintaining the database, use VOSviewer software to classify and visualize the data. The findings suggest that the research topic was chosen based on keywords. Coral morphological plasticity research is primarily focused on the terms coral colonies and species. Small-scale coral morphology, morphological variability, and coral morphometrics are among the topics that have received little attention. The possibility of conducting research on the three subjects is still open. There are still many unanswered mysteries about coral. This work is crucial to research since it illustrates the direction of future plans for exposed coral morphology and plasticity. This review serves as a useful starting point for future coral morphology and plasticity research.

oai:ojs.ejournal.undip.ac.id:article/563 2020-10-25T22:45:41Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/563 2020-10-25T22:45:41Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 4 (2008): Jurnal Ilmu Kelautan; 203-208 Wulandari, Sri Yulina Yulianto, Bambang Sukristiyo, Sukristiyo 2010-11-15 06:10:02 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/563 id Logam beratmerupakan salah satu polutanyangsering ditemukan dan menyebar diperairan estuarin. Penelitian ini bertujuan untuk mengetahui pola sebaran logam berat Pb dan Cd dalam kolom air di Muara Sungai Babon dan Seringin Semarang. Sampel air diambil di delapan stasiun dan dianalisa dengan AAS. Hasil penelitian menunjukkan bahwa dalam kolom air, rata-rata kandungan logam berat Pb sebesar 0,038-0,128 ppm, dan Cd sebesar 0,021-0,076ppm. Nilai ini sudah melampaui ambang batas baku mutu sebagaimana yang ditetapkan oleh Kep Men KLH Rl No 51/2004. Pola sebaran logam berat timah hitam (Pb) dan cadmium (Cd) cenderung menurun konsentrasinya pada perairan yang menuju ke arah lautKata kunci: Pb, Cd, air, pola sebaran

oai:ojs.ejournal.undip.ac.id:article/9183 2020-04-17T06:02:49Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9183 2020-04-17T06:02:49Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 2 (2016): Ilmu Kelautan; 65-76 Wiyoto, Wiyoto; Program Diploma Institut Pertanian Bogor Sukenda, Sukenda; Department of Aquaculture, Faculty of Fisheries and Marine Science, Bogor Agricultural University Jl. Lingkar Kampus IPB Darmaga, Bogor, Jawa Barat 16680 Harris, Enang; Department of Aquaculture, Faculty of Fisheries and Marine Science, Bogor Agricultural University Jl. Lingkar Kampus IPB Darmaga, Bogor, Jawa Barat 16680 Nirmala, Kukuh; Department of Aquaculture, Faculty of Fisheries and Marine Science, Bogor Agricultural University Jl. Lingkar Kampus IPB Darmaga, Bogor, Jawa Barat 16680 Djokosetiyanto, Daniel 2016-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9183 Vocational Study Program, Bogor Agricultural University en Sediment quality has been considered as one of the prime factors influencing the environment quality that support maximum shrimp production.The aim of the study was toevaluate the effects of sediment redox potential and shrimp stocking density on the profile of some sediment and water quality parameters. Two factors randomized factorial design was applied, with stocking density (60 and 120 shrimps.m-2) as the first variable and sediment redox potential (-65 mV, -108 mV and -206 mV) as the second variable. Some significant changes in TP, total Mn, and total S concentrations in the sediment were observed after the experimentation (P&lt;0.05). Sediment redox potential significantly affected the dissolved oxygen, TAN, NO2, NO3, and H2S concentrations in the water. Whereas shrimp stocking density affected all water quality parameters except H2S concentration. Significant interactions between redox potential and stocking densities were observed in the nitrite and alkalinity concentrations. The significant effects of both shrimp density and redox potential on the sediment and water parameters in particular those that are known to directly affect the shrimp welfare (e.g. oxygen, ammonia, nitrite and H2S) indicate that these variables are of important aspects in shrimp pond management. Furthermore, the results clearly showed that -206mV redox potential significantly reduced the dissolved oxygen concentration in the sediment-water interface and increased the generation of H2S in water column. Thereby, this redox potential level is not advisable for shrimp culture system. Keywords: redox potential, stocking density.

oai:ojs.ejournal.undip.ac.id:article/69578 2026-02-11T19:42:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/69578 2026-02-11T19:42:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 4 (2025): Ilmu Kelautan; 574-585 Zubaida, Vina; Marine Science Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro Haryanti, Dwi; Marine Science Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro Munasik, Munasik; Marine Science Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro Wijayanti, Diah Permata; Marine Science Department, Faculty of Fisheries and Marine Science, Universitas Diponegoro Singh, Tanya; Sesoko Station, Tropical Biosphere research center, University of the Ryukyus 2025-12-20 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/69578 Coral Bleaching; Symbiodiniaceae; DNA Barcoding; Cladocopium; Karimunjawa en Recently, there has been a global decline of coral reef ecosystems, primarily caused by major threats such as global warming. This phenomenon has a significant negative impact on coral reefs, including rising sea temperatures that trigger of coral bleaching. Composition of symbiotic algae, Symbiodiniaceae, in corals determines how corals respond to environmental stress.  This study aimed to investigate the community of the symbiotic algae during bleaching event by applying molecular identification technique. Coral bleaching samples from different genera were randomly collected from three different location around Sambangan Island, Karimunjawa at the depth of 1 – 2 m. DNA Barcoding of Internal Transcribed Spacer (ITS1, 5.8 rRNA and ITS2) gene were performed. Our result shows that four types of Symbiodiniaceae were closely related to the symbiotic algae found in this study, i.e. Cladocopium goreaui, Cladocopium sp., Symbiodinium sp. Clade C, and Symbiodinium sp. C1. The phylogenetic tree analysis showed that all the Symbiodiniaceae species found formed a single clade with a low genetic distance value. All of these species belong to the same genus Cladocopium. This type of symbiotic algae is known to have broad tolerance to temperature changes and other stress factors. 

oai:ojs.ejournal.undip.ac.id:article/2259 2012-02-28T21:37:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2259 2012-02-28T21:37:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 4 (2005): Jurnal Ilmu Kelautan; 177-184 Ghofar, Abdul; Faculty of Fisheries and Marine Science Diponegoro University, Semarang, Indonesia e-mail: aaghofar@indosat.net.id Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2259 en Pengelolaan perikanan laut di Selat Bali mencakup wilayah berairan seluas 2,500km2 Selat Bali terutama dipengaruhi oleh perairan dari Samodera Hindia, dan hampir tidak ada pengaruh dari laut Flores dan laut Bali. Perikanan di Selat Bali bersifat perikanan tunggal (purse seine) dan mempunyai target yang jelas (ikan lemuru) serta menerapkan teknologi yang relatif telah maju. Meskipun begitu, secara alamiah perikanan Selat Bali melibatkan 2 propinsi Bali dan Jawa Timur, dan meliputi 4 kabupaten, sehingga administrasi maupun pendekatan-pendekatan yang dilakukan cukup kompleks. Perencanaan dan pengelolaan perikanan di Selat Bali sampai dewasa ini lebih menitikberatkan pada usaha-bersama para pemangku kepentingan. Sementara hal itu secara formal dapat diterima, perkembangan dalam perikanan terakhir membuktikan perlunya keterlibatan secara riil masyarakat pesisir/nelayan dalam proses perencanaan dan pengelolaan sejak awal. Selain itu diperlukan pengkajian sumberdaya perikanan secara partisipatif, dimana metode standard pengkajian ilmiah dimudahkan sedemikian sehingga masyarakat nelayan dapat menganalisis dan mempraktekkan sendiri pada sumberdaya,ekosistem dan kehidupan mereka. Hanya dengan cara demikian dapat diharapkan timbulnya rasa kepemilikan mereka atas sumberdaya dan ekosistem pendukungnya. Hal ini akan memacu kesadaran akan keberlanjutan sumberdaya, yang pada gilirannya akan menentukan nasib usaha perikanan, pendapatan dan kehidupan mereka.Kata kunci: Rencana Pengelolaan Perikanan, proses partisipatif, kepemilikan, berkelanjutan, perikananbertanggungjawabThe marine fisheries management of the Bali Strait covers an area of about 2,500km2. The Bali Strait is primarily influenced by the relatively deeper Indian Ocean - than the Flores and Bali seas. The Bali Strait fishery is mono-typed (purse seine), clearly targeted (lemuru, Oil Sardine), and technologically advanced. However, the nature of the presence of two provinces for the Bali Strait (and including 4 districts) brings about a rather complicated administration procedures and approach. It can be remarked that the present management putmore weight on the collaborative effort among all stakeholders. While it is formally acceptable, recent development in the fishery clearly suggests an increasing need of the involvement of fishing communities inplanning and management processes, at its earliest stage. This is particularly vital to be applied in the Bali Strait. In addition there is an urgent need to apply participatory research in the fishery, so that standardscientific fisheries research methodology should be lowered-down one level in order that the fishers can understand and perform simple analysis of their own natural resources, ecosystem and livelihood. Only withthese two actions can the fishers be expected to have the ownership and to &ldquo;help themselves&rdquo; toward sustainability of marine resources and securing their fishery, improving their welfare and livelihood.Key words: Fisheries Management Plan, participatory process, ownership, sustainability, responsible fisheries

oai:ojs.ejournal.undip.ac.id:article/27574 2021-10-13T00:59:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/27574 2021-10-13T00:59:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 1 (2020): Ilmu Kelautan; 39-44 Wijayanto, Andri; Master of Coastal Resources Management, Department of Aquatic Resources Management, Fisheries and Marine Sciences Faculty, Diponegoro University Widowati, Ita; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Winanto, Tjahjo; Faculty of Fisheries and Marine Science, Jenderal Soedirman University 2020-03-08 09:15:11 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/27574 Gelidium latifolium; domestication; weight growth; survival; culture media; semi-outdoor en Gelidium latifolium is one of red seaweed types potentially can be developed as an industrial raw material. Since Gelidium is currently taken from ocean, the availability of seaweed from aquaculture is necessary to overcome the small number of its availability in nature. In Indonesia, G. latifolium cultivation has not been carried out so that domestication is required. The use of macro and micro nutrients in growth media is essentially needed for the domestication process. Domestication requires fast media and place for growth. The purpose of this study is to determine the growth of biomass and the survival of G. latifolium in different culture media. The study was conducted in a semi-outdoor research laboratory. The method used in this research is laboratory experimental method and Completely Randomized Design (CRD) with the treatment applied using 3 types of culture media (Urea: Za: TSP) by comparison (A) 100: 50: 50% (2 g.L-1), (B) 75: 75: 50% (2 g.L-1) and (C) 75: 50: 75% (2 g.L-1), with 3 replications. The seaweed was kept in 10 L of water in aeration equipped aquarium and filled with 10 g of G. latifolium on each treatment. The best growth rate of G. latifolium biomass is 5.67± 0.58 g and 100±0% are survived in C culture medium with a concentration of 75% Urea: 50% ZA: 75% TSP (2 g.L-1).

oai:ojs.ejournal.undip.ac.id:article/6783 2019-08-26T01:59:38Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/6783 2019-08-26T01:59:38Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 1 (2013): Ilmu Kelautan; 30-38 Irwani, Irwani; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jl. Prof. Soedarto, S.H., Tembalang, Semarang, Indonesia. 50275. Afiati, Norma; Jurusan Perikanan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jl. Prof. Soedarto, S.H., Tembalang, Semarang, Indonesia. 50275. Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/6783 en Epibion merupakan organisme yang hidup melekat pada berbagai jenis substrat alamiah di dasar perairan dan berperan penting sebagai pemakan sisa. Bandengan dan Pulau Panjang adalah dua lokasi pantai berpasir yang terletak berdekatan di Kabupaten Jepara Jawa Tengah. Studi ini menginvestigasi epibion pada makrofit, yaitu makroalgae dan lamun di kedua lokasi, dengan metode survei. Epibion utama kedua jenis makrofit tersebut adalah mikroalgae dan mikrozoobentos, dengan jumlah dan keanekaragaman yang relatif tidak berbeda. Secara lebih detil, epibion utama makroalgae umumnya adalah mikroalgae planktonik dan mikrozoobentos, sedangkan epibion utama lamun adalah mikroalgae planktonik yang bersifat epifit. Struktur komunitas bentik yang mengandung Polychaeta dalam jumlah jenis dan jumlah individu terbanyak dibandingkan Crustacea dan Mollusca, dan tidak dijumpainya genera lamun pionir Halophila dan Halodule di kedua lokasi, mengindikasikan masih cukup baiknya kualitas hayati kedua pantai wisata tersebut. Kata kunci: epibion, lamun, makroalga,  pantai berpasir, Jepara Epibiont ​​is known as living organisms attached to various natural benthic substrates and plays an important role as scavenger. Bandengan and Pulau Panjang are two sandy beaches close to each other located at Jepara, Central Java. This study investigates epibionts on macrophytes, which are macroalgae and seagrasses in both locations, by means of survey method. In general, major constituent of epibionts in those two macrophytes are microalgae and microzoobenthos, with relatively similar individual number and diversity. In more details, epibionts in macroalgae is planktonic microalgae and microzoobenthos, whereas, for seagrass it is of epiphytic microalgae. Benthic community structure which have more abundant and more diverse Polychaeta compared to that of Crustacea and Mollusca, combined with no existence of pioneer seagrass, i.e., Halophila and Halodule indicating that both beaches have still retained relatively good quality ecosystem for tourism. Keywords: epibiont, seagrass, macroalgae, sandy beach, Jepara

oai:ojs.ejournal.undip.ac.id:article/55369 2023-12-27T19:14:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/55369 2023-12-27T19:14:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 4 (2023): Ilmu Kelautan; 383-391 Joesidawati, Marita Ika; Study Program of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas PGRI Ronggolawe Tuban Nursalim, Nining; Diponegoro Marine Biodiversity Project Laboratory, Universitas Diponegoro Kholilah, Nenik; Diponegoro Marine Biodiversity Project Laboratory, Universitas Diponegoro Kurniasih, Eka Maya; Graduate School of Engineering and Science, University of The Ryukyus Cahyani, Ni Kadek Dita; Biology Department, Faculty of Science and Mathematics, Universitas Diponegoro Ambariyanto, Ambariyanto; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro 2023-12-12 02:50:41 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/55369 Anchovies species; molecular; DNA Barcoding; Tuban en Anchovy is the main catch and the primary consumption of coastal communities in Indonesia, and its production shows an increase of more than 10% in 2021. Tuban district, in East Java, Indonesia is part of the WPP 712 (Wilayah Pengelolaan Perikanan or Fisheries Management Area) and highly produces anchovies’ fisheries. Anchovy has a small size, making it difficult to identify morphologically. This study aimed to genetically identify anchovy samples obtained from North Java (Tuban) waters. Molecular identification was conducted by utilizing Cytochrome Oxidase Subunit I (COI) gene using jg-HCO and jg-LCO primers. This study observed 12 individual samples with 623 base pair sequence length. Five species were obtained, namely four species of anchovies (Encrasicholina heteroloba, Encrasicholina punctifer, Stolephorus waitei, and Stolephorus insularis) and one species of sardines (Dussumieria elopsoides) with 99.84-100% similarity to NCBI sequences data. Anchovies typically have a streamlined body with a slightly compressed shape. Anchovies have cycloid scales, which are smooth-edged and relatively small, ranging from a few centimeters to around 20 centimeters in length. Some of the genus from the Anchovy group are Encrasicholina and Stolephorus. The phylogenetic tree reconstruction leads into four clades with a genetic distance between clades of 17,9-24,5 %. This research provides methods and data on the genetic diversity of anchovies taxa caught in Tuban, East Java. The findings are expected to support promoting new standards for healthier and more sustainable anchovy stocks in the country. Overall, this study contributes to providing valuable insights for fisheries management and conservation efforts in Indonesia.

oai:ojs.ejournal.undip.ac.id:article/1424 2017-08-19T22:49:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1424 2017-08-19T22:49:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 2 (2010): Ilmu Kelautan; 103-112 Supriyono, Eddy; Departemen Budidaya Perairan Fakultas Perikanan dan Ilmu Kelautan IPB, Bogor 16680. Telp./Fax. 02518628755, .08164800176, eddy_supriyono@yahoo.com Budiyanti, Budiyanti; Fak. Perikanan Universitas Dayanu Ikhsanuddin (Unidayan ) Bau-bau, Buton Sulawesi Tenggara. Budiardi, Tatag 2012-02-01 06:27:02 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1424 id Ikan Kerapu Macan merupakan salah satu komoditas ikan air laut yang cukup digemari oleh masyarakat dan memiliki nilai ekonomis yang tinggi. Masalah yang sering dihadapi oleh petani adalah sulitnya mendapatkan benih ikan kerapu yang cukup baik karena jarak antara tempat pembesaran dan tempat pembenihan relatif jauh. Oleh karena itu dibutuhkan teknologi yang tepat yang dapat mengangkut ikan dalam waktu yang lama, tingkat kelangsungan hidup yang tinggi serta kondisi fisiologi ikan pasca pengangkutan yang tetap baik. Penelitian ini bertujuan untuk menganalisis dampak penggunaan minyak sereh terhadap respon fisiologi berupa gambaran darah, histologi jaringan dan pertumbuhan serta kelangsungan hidup&nbsp; benih ikan kerapu macan dengan ukuran panjang rata-rata 7 cm dan berat rata-rata 4,02 gram yang diangkut di dalam sistem tranportasi tertutup dengan kepadatan tinggi selama 56 jam. Rancangan acak lengkap digunakan dengan 4 perlakuan, yaitu tanpa minyak sereh (Kontrol) minyak sereh 10, 20 dan 30 mg/L dengan 2 ulangan. Hasil penelitian menunjukkan bahwa penambahan minyak sereh 10 mg/L lebih baik dibandingkan perlakuan yang lain, baik dilihat dari kualitas air dengan nilai Total Ammonia Nitrogen (TAN) terendah&nbsp; 6,459&plusmn;1,290 mg/L, CO2 32,561&plusmn;6,498 mg/L, maupun dari kondisi fisiologi berupa kadar glukosa 50,375&plusmn;28,390 mg/dl, nilai gambaran darah berupa sel darah merah 1,28x106 sel/mm3, sel darah putih 2,60x104 sel/mm3, N:L (Netrofil:Limfosit) rasio 0,41% yang mendekati nilai kondisi ikan normal,&nbsp; kondisi histologi berupa&nbsp; tingkat kerusakan insang yang paling rendah&nbsp; dan nilai SR tertinggi 97,5% serta laju pertumbuhan 1,33%. Kata kunci: kerapu macan, minyak sereh, respon fisiologi, transportasi tertutup, kepadatan tinggi&nbsp;Tiger Grouper is one of marine fish commodities well-loved by the community and have high economic value. The problem often faced by grouper farmers is the difficulty to obtain the good seed because the distance between the place where the hatchery rearing and relatively remote. Therefore, it needs a proper technology to transport the fish for a long time, the survival rate is high and the condition of post-transport physiology of fish that remain good. This study was aimed to evaluate the impact of the use of citronella oil on the physiological responses of the juvenile tiger grouper with emphasized on the evaluation of blood characteristics, histophatological change, growth and survival rate of the fish.&nbsp; The fish with an average length of 7 cm and an average of 4,02 grams in weight which are transported in high density of sealed transportation system for 56 hours. Completely randomized design (CRD) was applied with 4 treatments (Without citronella oil (K/Control), 10, 20, 30 mg/L of citronella oil respectively and 2 replications. The results showed that application of 10 mg/L of citronella oil was better than the other concentration, in terms of water quality with low Total Ammonia Nitrogen (TAN) value 6.459 &plusmn; 1.290 mg/L, CO2 32.561 &plusmn; 6.498 mg/L, and the physiological conditions&nbsp; such as glucose level was&nbsp; 50,375 &plusmn; 2.390 mg/dL , red blood&nbsp; cell &nbsp;value was 1,28x106 mm3, leucocyte&nbsp; value was 2,60x104 mm3, N: L ratio was 0.41%, the lowest gill damage and the highest survival rate and growth rate ; those conditions were&nbsp; close to the normal fish. Key words: &nbsp;&nbsp; juvenile tiger grouper, citronela oil, physiological responses, sealed transporatation system, high density

oai:ojs.ejournal.undip.ac.id:article/2288 2012-03-01T08:43:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2288 2012-03-01T08:43:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 2 (2005): Jurnal Ilmu Kelautan; 106-114 Ghofar, Abdul; Faculty of Fisheries and Marine Science, Diponegoro University Kampus FPK UNDIP Tembalang, Semarang e-mail: aaghofar@indosat.net.id Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2288 en Tulisan ini mendeskripsikan perikanan cumi-cumi di Selat Alas, khususnya berkaitan dengan fluktuasi tangkapan yang terjadi karena pengaruh aktivitas penangkapan dan variabilitas iklim. Cumi-cumi ditangkap dengan jalaoras (sejenis payang dengan lampu sebagai alat bantu mengumpulkan&nbsp; cumi-cumi); tangkapan dan alat tangkap inilah yang dipakai dalam analisis. 90% tangkapan cephalopoda berupa cumi-cumi yang terdiri dari 5 spesies.Indeks osilasi selatan (SOI) dipakai sebagai parameter yang mewakili variabilitas iklim. Satu set data 44 tahun (1960-2003), mengenai SOI, upaya penangkapan dan tangkapan cumi-cumi dianalisis. Diperoleh korelasi yang sangat kuat (p&gt;0.001) antara ketiga komponen. Dengan memasukkan ketiga komponen tersebut, suatu model perikanan cumi-cumi untuk Selat Alas dikembangkan. Untuk mengkonstruksi model tersebut dipergunakan nilairata-rata tahunan untuk SOI dan upaya penangkapan. Model yang dihasilkan dapat dipergunakan untuk memprediksi tangkapan cumi-cumi. Meskipun demikian penggunaannya untuk peramalan dan pengelolaan perikanan haruslah hati-hati. Penggunaan model secara efektif mensyaratkan dilakukannya monitoring terhadapketiga komponen diatas setiap bulan. Disarankan cara-cara meningkatkan pengelolaan perikanan cumi-cumi, khususnya sehubungan dengan riset, perencanaan dan pengelolaan, semuanya secara partisipatif, sebagai upaya untuk meningkatkan rasa-memiliki masyarakat terhadap sumberdaya perikanan cumi-cumi.Kata kunci: cumi-cumi, variabilitas iklim, ENSO, indeks osilasi selatan&nbsp;The Alas Strait squid fishery is described, with emphasis on its fluctuating catches due to the combined effects of fishing and climate variability. The fishery almost exclusively employs &lsquo;jala oras&rsquo; (light-lured payangtype fishing gears), which was used in catch and fishing effort analysis. Five squid species constitute 95% of the cumulative annual cephalopod catches. The southern oscillation index (SOI) was used to represent the climate variability component. A 44-year data set, starting from 1960 to 2003, comprising the SOI, fishing effort and squid catches was used in the analysis. There is a very strong correlation (p&gt;0.001) between the three components. A model for the Alas Strait squid fishery was therefore developed by means of incorporating these three components. Average annual values of SOI and fishing effort were used to construct the model.The model can be a useful tool for predicting the squid catches. However, it should be carefully used forforecasting and managing the fishery. In order to effectively used the model, monitoring the catch, fishing effort and the SOI should be carried out, preferably monthly. A suggestion for improving the fishery management is outlined, involving participatory fishery research, planning and management,. in an attempt to enhance the ownership of the fishery.Key words: squid, climate variability, ENSO, southern oscillation index

oai:ojs.ejournal.undip.ac.id:article/35379 2021-10-13T00:52:55Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/35379 2021-10-13T00:52:55Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 1 (2021): Ilmu Kelautan; 27-36 Achyani, Ratno; Faculty Fisheries and Marine Science, Univertity of Borneo Tarakan Bengen, Dietriech G; Departement of Marine Sciences, Faculty of Fishery and Marine Sciences, , IPB University Prartono, Tri; Departement of Marine Sciences, Faculty of Fishery and Marine Sciences, , IPB University Riani, Etty; Departement of Aquatic Resources Management, Faculty of Fishery and Marine Sciences, IPB University bin Omar, Abdullah Hisam; Faculty of Built Environment and Surveying, Universiti Teknologi Malaysia 2021-03-08 10:26:02 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/35379 PAHs; coastal area; river; brackish pond; distribution en PAHs are mutagenic and carcinogenic agents that influence the coastal water of Tarakan City. This study aims to determine the concentration, type, and distribution of PAHs in waters and sediments of rivers, seawater, and brackish ponds, and their potential sources. Fourteen samples of water and sediment from selected stations obtained 14 types of PAHs priority (USEPA). Analysis using GC-MS Type Thermo Trace 1310 single quadrupole Mass Spectrometer, using Coulum melting silica column (coulumn fused silica) DB5 MS with a length of 30 m, a diameter of 0.32 mm inline. The concentration in sediments at river locations ranges from 0.72-352.84, between 1.23-606.74 in the sea, and brackish ponds 0.08-2858.88 ng.g-1. On the waters ranged from 42.46-160.25 µg.L-1, in the sea 7.95-167.55 µg.L-1 and ponds 7.63-151.60 µg.L-1. The concentration level in rivers and seas is small and in the ponds is small-very high. The concentration on water at the river site was observed to increase from upstream to downstream. Meanwhile in sediment was higher in the upstream decreased towards the middle of river and increased in downstream/estuary area. The concentration in the Tarakan coastal environment signifies the potential hazards to the environment. Components Nap, Fla, Pyr, Chr, and BaP are types that are often identified. Furthermore, two, four and five rings of PAHs were shown to dominate in water and sediment, with the major rings present in both river and brackish pond. The PAHs were both petrogenic and pyrolytic sources from land base sources that were possibly derived from the Pamusian river.

oai:ojs.ejournal.undip.ac.id:article/7163 2017-08-19T22:43:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7163 2017-08-19T22:43:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 4 (2013): Ilmu Kelautan; 186-192 Ambariyanto, Ambariyanto; UPT Laboratorium Terpadu, Diponegoro University Marine Science Department, Faculty of Fisheries and Marine Science, Diponegoro University Jl. Prof. Soedarto, S.H., Tembalang, Semarang, Indonesia. 50275 Djunaedi, Ali; Marine Science Department, Faculty of Fisheries and Marine Science, Diponegoro University Jl. Prof. Soedarto, S.H., Tembalang, Semarang, Indonesia. 50275 S.P.J., Nur Taufiq; Marine Science Department, Faculty of Fisheries and Marine Science, Diponegoro University Jl. Prof. Soedarto, S.H., Tembalang, Semarang, Indonesia. 50275 Rudhi, Pribadi; Marine Science Department, Faculty of Fisheries and Marine Science, Diponegoro University Jl. Prof. Soedarto, S.H., Tembalang, Semarang, Indonesia. 50275 Delianis, Pringgenies; Marine Science Department, Faculty of Fisheries and Marine Science, Diponegoro University Jl. Prof. Soedarto, S.H., Tembalang, Semarang, Indonesia. 50275 2013-12-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7163 en Ikan Kerapu merupakan salah satu ikan unggulan yang ditargetkan sebagai komoditi eksport Indonesia. Usaha budidayanya saat ini sangat terganggu dengan tingginya mortalitas pada stadia larva. Usaha untuk mengatasi masalah tersebut adalah dengan menggunakan obat seperti antibiotik yang ternyata tidak membuahkan hasil maksimal tetapi justru menimbulkan resistensi beberapa jenis bakteria. Salah satu aspek yang belum pernah dilihat dalam rangka mengatasi masalah ini adalah dengan mengusahakan percepatan pertumbuhan pada stadia larva sehingga akan lebih mampu menghindari dari beberapa penyebab mortalitas. Salah satu sumber energi yang terdapat dalam perairan namun dalam jumlah yang tidak besar adalah dissolved organic matter (DOM). Penelitian ini ditekankan untuk melihat kemampuan larva ikan Kerapu dalam memanfaatkan DOM (digunakan asam amino terlarut ;ATT) yang terdapat di air laut. Sebanyak 16 (enam belas) jenis asam amino yang terdiri dari tiga klas yakni neutral, basic, dan acidic digunakan dalam penelitian ini. Sedangkan larva ikan Kerapu yang digunakan berumur 2 hari. Hasil penelitian menunjukkan bahwa larva ikan Kerapu menyerap seluruh jenis asam amino baik neutral, basic, dan acidic. Namun jenis asam amino yang diserap adalah glutamat, histidin, lisin, serin, metionin, tritopan dan iso leusin. Sedangkan yang paling banyak diserap oleh larva ikan ini adalah lisin. Hal yang menarik dalam penelitian ini adalah terdapat beberapa jenis asam amino yang diduga justru dikeluarkan oleh larva ikan tersebut yakni glysin, alanin, tyrosin, valin, phenil alanin dan leusin. Penyerapan beberapa jenis asam amino ini diduga dimanfaatkan oleh larva ikan Kerapu dalam proses pertumbuhannya. Kata kunci : asam amino terlarut, larva, Kerapu Macan, Epinephelus fuscoguttatus   Kerapu (grouper fish) is known as an important and highly economic value fish and a good candidate for major export commodity for Indonesia. However, there is an important problem faced by its cultivation i.e. high mortality rate at larva stage. Many different efforts have been done to overcome this problem mainly by using drugs and antibiotics, which have caused another problem i.e. bacteria resitance. One aspect that has not been widely investigated is by increasing its growth rate so that the larvae will have the ability to avoid mortality, such as by utilising dissolved organic matter (DOM) which naturally occur in the environment. This research investigates the question whether Kerapu fish larvae have the ability to absorb DOM (in this case disolved free amino acids; DAA) as well as the preference and the rate of absorbsion. There were 16 species of DAA used in this experiment which consist of three classes i.e. neutral, basic, and acidic. Two days old larvae were used in the experimant. The results showed that Kerapu larvae absorbed all classes of amino acids, although not all amino acids given being absorbed but only glutamine, histidine, lysin, serine, triptophan, metionine and iso leusine. While the most absorbed amino acids was lysine. One interesting results showed that the larvae secrete several amino acids i.e. glysine, alanine, tyrosine, valine, phenil alanine and leusine. The absorbsion and secretion of amino acids were possibly related to its metabolic processes within the larvae in relation to growth processes. Keywords: dissolved free amino acids, DAA, larvae, Kerapu, Epinephelus fuscoguttatus

oai:ojs.ejournal.undip.ac.id:article/61208 2024-12-10T15:14:41Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/61208 2024-12-10T15:14:41Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 3 (2024): Ilmu Kelautan; 321-328 Ayu, Inna Puspa; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University Mashar, Ali; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University Wardiatno, Yusli; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University Butet, Nurlisa A.; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University Sani, L. Mukhsin Iqbal; Oceanogen Research Center Irianda, Nadya Jeny; Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, IPB University Madduppa, Hawis; Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, IPB University Gelis, Ester R. E.; Department of Fisheries, Faculty of Animal Husbandary, University Jambi Lane, Christopher; Department of Biological Sciences, University of Rhode Island Borbee, Erin; Department of Biological Sciences, University of Rhode Island Subhan, Beginer; Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, IPB University 2024-09-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/61208 Waisai; Reef Fish; Fish Trade; Mitochondrial DNA; DNA authentication en Groupers are one of the most important and commercial fishes; many of the species are classified as Life Reef Fish Trade (LRFT). The number of grouper species in these locations may be more diverse than at other sites. Identifying the species number of a grouper is essential for mapping reef fitness. However, morphological identification of groupers is relatively difficult. Molecular methods such as DNA barcoding could be an option and even serve as reliable validation. Therefore, this research was conducted to identify groupers belonging to the Serranidae family. The grouper samples were obtained from the fish market in Waisai, Raja Ampat, Indonesia. The DNA barcoding employed the COI genes to accurately identify groupers. The Qiagen DNeasy 96 tissue extraction kit was used to extract DNA, and Primer Fish F1/R1 was applied. The sequences were analysed using ClustalW in MEGA 7.0 and phylogenetic tree was generated using the NJ (Neighbour Joining) method. Eleven species of groupers belonging to five taxa were discovered in Waisai, Raja Ampat. Anyperodon, Cephalopholis, Epinephelus, Plectropomus, and Variola are the grouper genera. Epinephelus was the predominant genus within the serranidae family, with 51.4% of the total. The International Union for Conservation of Nature's (IUCN) Red List category puts the majority of grouper species in the 'Least Concerned' category. This study confirmed the effectiveness of DNA barcoding for species identification and the value of the COI gene for Grouper's phylogenetic research. The outcome offers information about fisheries resources, which should be helpful in managing fisheries in reef ecosystems.

oai:ojs.ejournal.undip.ac.id:article/1677 2017-08-19T22:48:51Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1677 2017-08-19T22:48:51Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 3 (2010): Ilmu Kelautan; 159-162 Santoso, Priyo; Jurusan Perikanan dan Kelautan, Fakultas Pertanian, Universitas Nusa Cendana Jl. Adisucipto, Penfui, Kupang, NTT 85001, Tlp/Fax. (0380) 881085; email : prysant@yahoo.com 2012-02-08 22:29:03 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1677 id Teknik rangsang pemijahan tiram (Crassostrea cucullata Born) di lingkungan buatan merupakan aspek penting dalam pengembangan teknologi pembenihan tiram.&nbsp; Oleh karena itu, telah dilaksanakan penelitian tentang rangsang pemijahan tiram dengan menggunakan kejut salinitas mulai dari bulan Agustus sampai Oktober 2010. Tujuan penelitian ini adalah untuk mengetahui pengaruh kejut salinitas terhadap pemijahan tiram.&nbsp; Rancangan acak lengkap diterapkan pada penelitian ini dengan empat perlakuan yaitu peningkatan salinitas secara mendadak 2&permil;dan 4&permil; dari salinitas awal (30&permil;) dan penurunan salinitas secara mendadak 2&permil; dan 4&permil;dari salinitas awal (30&permil;), dan tiga ulangan.&nbsp; Tiram yang digunakan sebagai hewan uji dikoleksi dari perairan Desa Oebelo, Kabupaten Kupang.&nbsp; Hasil uji nonparametrik Kruskal Wallis menunjukkan bahwa perlakuan kejut salinitas berpengaruh nyata (P&lt;0,05) terhadap pemijahan tiram.&nbsp; Perlakuan kejut salinitas dengan penurunan salinitas secara mendadak memberikan respon pemijahan tiram yang lebih tinggi bila dibandingkan perlakuan kejut salinitas dengan peningkatan salinitas secara mendadak.&nbsp; Pemijahan tiram tertinggi terjadi pada perlakuan kejut salinitas dengan penurunan salinitas secara mendadak 4&permil;dari salinitas awal (30&permil;).Kata kunci: Kejut salinitas, pemijahan buatan, tiram, Crassostrea cucullata&nbsp;The technique of oysters (Crassostrea cucullata Born) spawning stimulation in artificial environment was important aspect on development of its hatchery technology.&nbsp; Consequently, research about spawning stimulation of oysters using shock of salinity has been conducted from August to October 2010.&nbsp; The aim of this research was to find out the effect of salinity shock on oysters spawning.&nbsp; Randomized design was applied in this research with four treatments, i.e. sudden increase of salinity 2&permil; and 4&permil; from initial salinity (30&permil;) and sudden decrease of salinity 2&permil; and 4&permil; from initial salinity (30&permil;), with three replications.&nbsp; Oysters used in this experiment were collected from intertidal of Oebelo Village, Kupang regency.&nbsp; Result of Kruskal Wallis test showed that salinity shock was significantly affected (P&lt;0.05) on oysters spawning.&nbsp; The treatment of salinity shock with sudden decrease in salinity was trigger spawning oyster higher than the treatment of salinity shock with decrease of salinity suddenly.&nbsp; The highest number of oysters spawning occurred at shock of salinity treatment with decrease of salinity suddenly 4&permil; from initial salinity (30&permil;). Keywords: Salinity Shock, spawning, oyster

oai:ojs.ejournal.undip.ac.id:article/16969 2021-10-13T03:57:52Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/16969 2021-10-13T03:57:52Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 2 (2018): Ilmu Kelautan; 109-112 Mulyana, Jeane Siswitasari; Bogor Agricultural University Farajallah, Achmad; Bogor Agricultural University Wardiatno, Yusli; Bogor Agricultural University 2018-06-21 21:26:45 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/16969 Prof Takeshi Miura, Ehime University en Larval development plays a major role in efficient pearl culture. The cultured larvae will be later used for recipient and donor oysters in cultured pearl production. Larval developmental stage of silver lip pearl oyster Pinctada maxima has been reported by several studies. Those studies used female and male oyster parents directly taken from natural habitat.This study aimed to redescribe larval development of P. maxima from commercial pearl oyster culture farm in Indonesia. Larval development of this species whose parents are originated from selected groups in the pearl culture farm has not been reported yet, thus it is necessary to be described. This species undergoes specific larval developmental stage. The larvae were observed under microscope, and then the average shell length (SL) and shell height (SH) were measured. D-shaped veliger larva (77.4±0.3 µm SL; 65.4±1.1 µm SH) appeared 20 h after fertilization. Tenday-old larva (156.2±2.8 µm SL; 149.5±5.6 µm SH) had developed umbo region so it was called umbonal larva. Umbonal larva then developed further into plantigrade larva (411.3±9.8 µm SL; 380.5±6.9 µm SH) in 25 days after fertilization. Developmental stage and larval sizein P. maxima is similar with those observed in P. fucata and P. margaritifera. Keywords: growth, larva, plantigrade, shell, umbo, veliger

oai:ojs.ejournal.undip.ac.id:article/2331 2012-03-03T01:51:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2331 2012-03-03T01:51:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 4 (2007): Jurnal Ilmu Kelautan; 211-218 Subardjo, Petrus; Jurusan llmu Kelautan, Fakultas Perikanan dan llmu Kelautan, Universitas Diponegoro Semarang Telp. 081328721692; Email : petrus_soebardjo@yahoo.com Hidayat, Nur Ismu; Jurusan llmu Kelautan, Fakultas Perikanan dan llmu Kelautan, Universitas Diponegoro Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2331 en Tujuan penelitian adalah memetakan dan menganalisis kondisi biofisik wilayah perairan di Pulau Karimunjawa, Jepara guna pemanfaatan wisata selam dan snorkling. Penelitian dilaksanakan di wilayah perairan Pulau Karimunjawa, Kabupaten Jepara, dengan cakupan wilayah kajian antara 110&deg;24&rsquo;00&rdquo; - 110&deg;29&rsquo;30&rdquo; BT dan 05&deg;49&rsquo;00&rdquo; - 05&deg;53&rsquo;30&rdquo; LS. Ground check dan pengambilan data lapangan dilaksanakan pada bulan Maret 2006. Metode penelitian yang digunakan adalah metode penginderaan jauh dan SIG. Penentuan lokasi sampling dilakukan dengan metode purposive random sampling. Analisis spasial di dalam Sistem Informasi Geografi (SIG) menggunakan indeks terbobot untuk analisis kesesuaian perairan untuk wisata selam dan snorkling, sesuai dengan kriteria-kriteria yang telah ditetapkan sebelumnya. Nilai tertinggi yang diperoleh sebagai hasil analisis spasial dari persen penutupan karang hidup, suhu perairan, kecepatan arus, kecerahan perairan dan kedalaman adalah 75%, 29,5&deg;C, 0,38 m/dt, 100%, dan 15 m. Hasil uji ketelitian pemetaan ekosistem peraian (terumbu karang, lamun dan pasir) menggunakan citra Landsat 7 ETM+ sebesar 86,21%. Ditinjau dari segi biogeofisik, pemanfaatan wisata bahari di perairan Pulau Karimunjawa terdiri dari 82,14 ha sangat sesuai untuk snorkling, 273,09 ha sesuai untuk snorkling, 52,36 ha sesuai bersyarat untuk snorkling, 226,51ha sesuai untuk selam, dan 425,89 ha tidak sesuai untuk selam dan snorkling. Kata kunci: Landsat 7 ETM+; kesesuaian wisata selam dan snorkling; Pulau Karimunjawa &nbsp;The research purpose is to mapping and analyze the biogeophysics condition of coastal water suitability for snorkeling and diving tourism. This research was conducted in Karimunjawa Island water territory, Jepara, Central Java in between 110&deg;24&rsquo;00&rdquo; - 110&deg;29&rsquo;30&rdquo;BT and 05&deg;49&rsquo;00&rdquo; - 05&deg;53&rsquo;30&rdquo;LS. Ground check and field data collection was done on March 2006. Survey method and sample data collection was based on purposive random sampling. Spasial analysis in Geographics Information System (GIS) such as weighted index was being used to analyze snorkeling and diving tourism suitability, according to the criteria, which have been specified previously. The highest value of live corals cover presentation, water temperature, ocean drift, light penetration and depth achieved from the survey was 75%, 29,5&deg;C, 0,38 m/s, 100%, and 15 m. Accuracy assessment result for costal ecosystem mapping such as coastal reef, seagrass and sand using Landsat 7 ETM+ satellite imagery is 86,21 %. Based on its biogeophysic, marine tourism use in Karimunjawa Island water territory is consisted of 82,14 ha is highly suitable for snorkelling, 273,09 ha is suitable for snorkling, 52,36 ha is marginally suitable for snorkling, 226,51 ha is suitable for diving, and 425,89 ha is not suitable for snorkling and diving. Key words: Landsat 7 ETM+; snorkling and diving suitability; Karimunjawa Island

oai:ojs.ejournal.undip.ac.id:article/40797 2022-02-13T04:23:18Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/40797 2022-02-13T04:23:18Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 4 (2021): Ilmu Kelautan; 282-297 Harsono, Gentio; Faculty of Defence Technology, Republic Indonesia Defence University Hydro-Oceanographyc Center, Indonesian Navy Purwanto, Budi; Faculty of Defence Technology, Republic Indonesia Defence University Gultom, Rudy A.G.; Faculty of Defence Technology, Republic Indonesia Defence University Puliwarna, Tunggul; Indonesian Naval Command and Staff College Setiyadi, Johar; Indonesian Naval Technology College Ando, Kentaro; Japan Agency for Marine Earth-Science and Technology Cobral, Mario; Universidade Nacional Timor Lorosae 2021-12-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/40797 Seawater Masses; Bali Sea; CTD Yo-Yo; Indonesian Through Flow; energy dissipation en The Bali Sea is located between the Java Sea and the Lombok Strait, which is one of the Indonesian Through Flow  exits, especially the western route. These waters are possible to be the meeting place and mixing of two water masses with significantly different characteristics, that is the watermass brings by Indonesian Through Flow and Indian Ocean watermass. This study describes the watermasses and its turbulent mixture in the Bali Sea using CTD Yo-Yo casting data and spatial monsoonal wind distribution. The vertical distribution of energy dissipation rate and diapycnal diffusivity in the Bali Sea was computed based on measurement data during KRI RIGEL 933 expedition on April, 2021. KRI RIGEL is operated by Hidro-Oceanographyc Center Indonesian Navy’s. Identified 4 types of water masses in a row, there are Java Sea water masses, mixed water masses between Java Sea and ITF, NPSW and NPIW with modified water mass property characters. The internal tides formed in the sills of the Lombok Strait are thought to contribute to the turbulent mixing parameters in the Bali Sea. The values obtained for energy dissipation and diapycnal diffusivity are 1.58 x 10-9 W Kg-1 and 5.07 x 10-5 m2 s-1, respectively. The value of this turbulent mixing parameter is confirmed to be smaller than the mixing value in the Lombok strait and is equivalent to the open sea. It is seen that there is a transformation of water mass which is marked by a shift in the density value in the identified water mass type.

oai:ojs.ejournal.undip.ac.id:article/303 2012-02-27T06:47:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/303 2012-02-27T06:47:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 2 (2009): Jurnal Ilmu Kelautan; 66-75 Sugianto, Denny Nugroho; Program Studi Oseanografi, Jurusan Ilmu Kelautan FPIK UNDIP, Semarang Telp/Fax : 024-7474698 dennysugianto@yahoo.com 2010-10-23 10:27:05 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/303 id Penelitian telah dilakukan di perairan Grati Pasuruan, Jawa Timur pada bulan Juni 2008. Tujuan dari penelitian ini untuk mengetahui kondisi hidrodinamika di perairan Grati Pasuruan, Jawa Timur. Pengukuran kecepatan dan arah arus serta tinggi dan periode gelombang menggunakan Sontek Argonaut XR, sedangkan untuk mengetahui pasang surut di perairan tersebut menggunakan tide gauge type Richard branch. Hasil yang diperoleh menunjukkan tipe pasang surutnya campuran condong ke harian ganda (mixed prevealing semi diurnal tide). Pola arus didominasi oleh arus pasang surut dengan kecepatan arus rata-rata berkisar 0,0025&ndash;0,2305 m/det dengan arah menuju ke timur &ndash; tenggara (arah 75o &ndash; 120o). Kecepatan arus permukaan berkisar antara 0.013-0.77 m/det, arus kedalaman tengah 0,001&ndash;0,32 m/det, dan di dasar 0,00&ndash;0,37 m/det. Tinggi gelombang pengamatan rata&ndash;rata adalah 0,11 cm dengan periode gelombang 4,76 detik. Hasil peramalan dengan pemodelan pada musim barattinggi gelombang mencapai 1,9-2,1 m dan musim timur 2,0-2,3 m. Klasifikasi gelombang termasuk gelombang perairan transisi. Profil vertikal kecepatan orbital gelombang pada puncak gelombang 0,13 m/det dan lembah gelombang -0,13 m/det.Kata kunci: hidrodinamika, pasang surut, arus, gelombang, perairan GratiThe survey was conducted at Grati Pasuruan East Java sea waters during June 2008. Objective of research is known hydrodynamic condition at Grati Pasuruan East Java sea waters. Current (velocity and direction) and wave (height and period) were measure used Sontek Argonaut XR. Tide was measure used Tide Gauge type Richard branch. The result had shown that tidal type is mixed prevealing semi diurnal tide. Current pattern dominance by tidal current where current velocity average between 0.0025-0.2305 m/sec and current direction to east-south east (75o&ndash;120o). The current velocity at sea surface 0.013 - 0.77 m/sec, 0.001-0.32 m/sec at sea midle, and 0.00-0.37 m/sec at sea bottom. Average of wave height observation 0.11 cm and wave period 4.76 second. Wave height prediction by modelling in west monsoon 1.9&ndash;2.1 m and east monsoon 2.0&ndash;2.3 m. Classification of wave characteristic is transition sea wave. Vertical profiles of wave induced velocities at wave crest 0.13 m/sec and wave trough -0.13 m/sec.Key words: hydrodinamic, current, wave, tide, Grati sea waters

oai:ojs.ejournal.undip.ac.id:article/8797 2022-05-23T00:34:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8797 2022-05-23T00:34:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 4 (2014): Ilmu Kelautan; 181-188 Johan, Ofri; Research Institute for Ornamental Fish Aquaculture and Development. Jl. Perikanan No. 13, Pancoran Mas, Kota Depok, Jawa Barat, Indonesia 16436 Syam, Amran R; Research Center for Fisheries Management and Conservation. Jl. Cilalawi No.1 Jatiluhur, Purwakarta; Jawa Barat, Indonesia 41152 2014-12-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8797 en Prevalensi penyakit karang sebelumnya belum dilaporkan di perairan Padang, Sumatera Barat. Adapun tujuan penelitian ini adalah untuk mendapatkan prevalensi penyakit karang pada lokasi yang dekat dengan pantai, pertengahan dan lokasi terluar, dimana lokasi tersebut merupakan lokasi pemantauan yang berkesinambungan sejak tahun 1994 untuk data kondisi karang. Metode pengamatan yang digunakan adalah metode transek sabuk dengan ukuran 1 m kekiri dan kekanan transek garis yang memiliki panjang 30 m dan 3 ulangan. Dua jenis penyakit dan dua indicator stress karang teramati pada penelitian ini. Penyakit karang sabuk hitam (Black Band Disease, BBD) yang banyak ditemukan di Pulau Pandan (1.3%) pada kedalam 5 m. Penyakit White Syndrome (WS) terjadi di Gosong Air (0.3%). Beberapa koloni karang Montipora sp. dan Pocillopora verrucosa mengalami pemutihan di Pulau Pieh (2.1%).Focal bleaching ditemukan pada karang Galaxea sp. dan Goniastrea sp. di Gosong Gabuo (2.5%) dan pada karang Pocillopora verrucosa di Gosong Sipakal (3.9%). Penyakit BBD menginfeksi karang Montipora sp. dan Porites sp. Penyakit WS hanya menginfeksi karang Montipora sp. Karang Montipora sp, Pocillopora sp dan Porites sp banyak dan umum ditemukan di perairan Padang. Hasil ini menunjukkan bahwa infeksi penyakit karang masih tergolong rendah dan secara alamiah bisa terjadi sehingga tidak menghalangi proses pemulihan kondisi karang yang saat ini terjadi dan secara umum pada status kesehatan karang. Kata kunci: coral disease, black band disease, white syndrome, Sumatera Barat The prevalence of coral disease was previously unreported on the reefs of the Padang Shelf Reef System, West Sumatra and is relatively uncommon. The objective of this study was to get coral disease prevalence of each site which located at inshore, mid-shelf reef and off-shore reefs. The research was carried out by using belt transect method with 1 m left and right of tape as long 30 m with 3 replications. Two kinds of coral disease and two indicators of stressed coral were observed. While relatively infrequent, Black Band Disease was most common (1.3%) occurring on Pandan Island at 5m. White Syndrome occurred at Air patch reef (0.3%). A few bleached colonies of Montipora sp. and Pocillopora verrucosa were observed on Pieh Island reef (2.1%). Focal bleaching was observed on Galaxea sp. and Goniastrea sp. at Gabuo patch reefs (2.5%) and on Pocillopora verrucosa at Sipakal patch reef (3.9%). BBD infected both Montipora sp. and Porites sp. WS only infected on Montipora sp. Montipora, Pocillopora and Porites were the most common genera observed on the reefs. It suggests that coral disease infection was classified as a minor and it will not hamper coral recovery processes and coral health status in Padang Waters, West Sumatera. Keywords: coral disease, black band disease, white syndrome, West Sumatera

oai:ojs.ejournal.undip.ac.id:article/52863 2025-06-15T08:04:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/52863 2025-06-15T08:04:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 1 (2025): Ilmu Kelautan; 92-102 Pratama, Khafid Rizki; Earth Science Study Program, Faculty of Earth Science and Technology, Bandung Institute of Technology Indonesia Agency for Meteorology Climatology and Geophysics Radjawane, Ivonne Milichristi; Earth Science Study Program, Faculty of Earth Science and Technology, Bandung Institute of Technology Oceanography Research Group, Faculty of Earth Science and Technology, Bandung Institute of Technology Korea-Indonesia Marine Technology Cooperation Research Center Pratama, Bayu Edo; Université de Bretagne Occidentale Indonesia Agency for Meteorology Climatology and Geophysics 2025-03-08 15:59:01 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/52863 ITF; heat transport; ocean heat content; ENSO en Indonesia Throughflow (ITF) flows water mass from the Northern Pacific Ocean to the Indian Ocean through Indonesian waters. This research was conducted in the Eastern Indonesia waters in 2009–2019 using Copernicus Marine Environment Monitoring Service (CMEMS) reanalysis and World Ocean Database (WOD) to analyze heat transport in ITF passages and ocean heat content in the Banda Sea. The analysis shows that ITF and heat transport have a strong relationship with a correlation of 0.7 during El-Niño Southern Oscillation (ENSO). Regarding the vertical profile by depth, heat transport in the Makassar Strait during La Niña was detected to be stronger in the Labani Channel and Central Sulawesi water, with values of -1.2 PW and -0.6 PW. Then, in the Lifamatola Strait, it was identified as strengthening in the Lifamatola Channel and Halmahera Strait with a value of -0.5 PW and -0.3 PW. The lag correlation between heat transport and the Oceanic Niño Index (ONI) shows a lag time of around 3-4 months, with the ENSO preceding heat transport. Mixed layer depth has an inverse relationship and salinity has a direct relationship with ENSO. Meanwhile, salinity has a relationship that is directly proportional to the ENSO. Another influence is the Rossby (Kelvin) waves when La Niña (El Niño) propagates to the West (Central) Pacific region, which tends to cause higher (lower) sea level elevations so that ITF and heat transport become strong (weak). It causes the ocean heat content (OHC) to increase during La Niña and decrease during El Niño.

oai:ojs.ejournal.undip.ac.id:article/1959 2017-08-19T22:46:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1959 2017-08-19T22:46:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 3 (2011): Ilmu Kelautan; 159-164 Purnama Fitri, Aristi Dian; Jurusan Perikanan, Fak. PIK Universitas Diponegoro, Jl. Prof. Seodarto, S.H., Kampus FPIK, Tembalang. Telp-Fax. 024-7474698, 024-8313759 2012-02-17 21:58:44 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1959 id Umpan berfungsi untuk menarik perhatian ikan agar tertangkap. Studi tingkah laku makan ikan merupakan bagian yang paling penting untuk mengetahui efektivitas penggunaan umpan. Penelitian ini bertujuan untuk mengetahui responss makan ikan kerapu macan (Ephinephelus fuscoguttatus) dengan perbedaan jenis dan lama&nbsp; perendaman&nbsp; umpan.&nbsp; Penelitian&nbsp; dilakukan&nbsp; dengan&nbsp; metode&nbsp; eksperimen&nbsp; laboratorium.&nbsp; Umpan&nbsp; yang digunakan adalah udang krosok (Metapenaeus elegans) dan ikan rucah (Sardinella gibbosa).&nbsp; Data penelitian meliputi waktu respons makan ikan terhadap umpan dengan lama perendaman 1, 7 dan 12 jam. Data dianalisis menggunakan uji-t. Kandungan kimia umpan (proximat dan asam amino) dianalisis berdasarkan lama waktu perendaman. Hasil penelitian menunjukkan bahwa respons makan E. fuscoguttatus terhadap umpan udang krosok dan ikan rucah tidak berbeda (P&gt;0,05). Respons makan E. fuscoguttatus terhadap perbedaan kondisi waktu perendaman umpan udang krosok dan ikan rucah&nbsp; selama 1 jam dan 7 jam berbeda (P&lt;0,05). Lama waktu perendaman umpan 12 jam tidak berbeda (P&gt;0,05). Semakin lama waktu perendaman umpan (hingga 12 jam) terjadi penurunan kandungan asam amino dari masing-masing umpan sehingga berpengaruh terhadap menurunnya respons makan Ephinephelus fuscoguttatus. Kata kunci : Respons makan, Ephinephelus fuscoguttatus, Umpan&nbsp;The bait has a function to attract for fish to be caught. Fish behavior studies of fish meal is the most important to examine the effectiveness of the use of bait. The aims of the researched were to determine response of eating tiger grouper (E. fuscoguttatus) with different types and duration of soaking bait. Research carried out by laboratory experimental methods. Bait used was shrimp (Metapenaeus elegans) and fish (Sardinella gibbosa). The research data includes the response time to eat fish bait with a long immersion, 7 and 12 hours. Data were analyzed using t-test. Chemical content of feed (proximate analysis and amino acids) were analyzed based on the long soaking time. The results showed that eating response E. fuscoguttatus on bait shrimp and fish different (P&gt;0.05). Response eating E. fuscoguttatus to different conditions of time soaking bait shrimp and fish for 1 hour and 7 hours different (P&lt;0.05). Soaking time for bait 12 hours is not different (P&gt;0.05) compared to long soaking 1 hour and 7 hours. The longer the bait soaking time (up to 12 hours) a decline in amino acid content of each feed and therefore contributes to decreased eating responses E. fuscoguttatus. Key words: Eating response, E. fuscoguttatus, Baits

oai:ojs.ejournal.undip.ac.id:article/18839 2021-10-13T03:56:18Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/18839 2021-10-13T03:56:18Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 3 (2018): Ilmu Kelautan; 119-122 Anggoro, Sutrisno; Fisheries Department, Faculty of Fisheries and Marine Science, Diponegoro University Suprapto, Djoko; Fisheries Department, Faculty of Fisheries and Marine Science, Diponegoro University Purwanti, Frida; Fisheries Department, Faculty of Fisheries and Marine Science, Diponegoro University 2018-09-06 19:01:21 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/18839 molting; osmo-effector; osmoregulation en Vanname shrimp (Litopenaeus vannamei) is one of euryhaline Crustacean that able to adapt to a wider range of salinities. The need of suitable media for a given size and molting stage of shrimp is a key factor of the success of shrimp culture. In order to ensure the success of fingerling Vanname shrimp (FVS) rearing, it is indispensable to provide suitable osmotic media for the molting process. This research was aimed to examine and determine isoosmotic media that complies with physiological process of FVS. The research was done in laboratory scale with Completely Randomized Design. FVS was acclimated to three salinities level i.e. 15-16 ‰ as the postmolt isosmotic media, 25-26 ‰ as the intermolt isosmotic media, and 29-30 ‰ as the premolt and molt isosmotic media with three replications. The result showed that in the media of 25-26 ‰, the osmotic work revealed the minimal level and it enhanced the growth rate without changing the amino acids composition in the shrimp body tissue.

oai:ojs.ejournal.undip.ac.id:article/2369 2022-04-06T18:18:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2369 2022-04-06T18:18:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 1 (2004): Jurnal Ilmu Kelautan; 26-30 Pringgenies, Delianis; Jurusan Ilmu Kelautan, FPIK Universitas Diponegoro Kampus Tembalang Semarang. Telp. / Fax 024.7474698 Sejati, Sri; Jurusan Ilmu Kelautan, FPIK Universitas Diponegoro Kampus Tembalang Semarang. Telp. / Fax 024.7474698 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2369 en Bioluminisensi merupakan penomena alam, yaitu cahaya yang ditimbulkan oleh suatu organ sebagai hasil dari reaksi kimia yang melibatkan tiga komponen, yakni luciferin (substrat), luciferase (enzim) dan molekul oksigen. Hasil penelitian menunjukkan bahwa bakteri simbiosis pada organ luminisensi cumi L. duvauceli adalah bakteriluminisen dari jenis bakteri Photobacterium phosphoreum dan bakteri memancarkan warna biru. Jenis bakteri ini merupakan bakteri yang paling terang memancarkan cahaya di bandingkan dengan jenis bakteri luminisensi lainnya. Hasil penelitian terhadap jumlah total bakteri memperlihatkan bahwa bakteri dapat memancarkan cahaya pada konsentrasi 4,6. 109 CFU/ml dengan diameter koloni bakteri pada 0,075 cm, sedangkan pada konsentrasi lebih rendah yaitu 2,0. 104 dengan diameter koloni bakteri 0,025 cm memperlihatkan bakteriluminisensi tidak memancarkan cahaya. Jadi konsentrasi bakteri sangat berperan dalam proses pemancaran cahaya pada bakteri luminisensi P. phosphoreum.Kata kunci: Isolasi bakteri, luminesensi, cumi-cumi (Loligo duvauceli)Bioluminescence refers to the visible light emission in liveng organisms that accompanies the oxidation of organic compounds (luciferins), mediated by an enzyme catalyst (luseferase). Result on the identification of bacteria live in the cuttlefish of L. duvauceli showed species of Photobacterium phosphoreum and the colony emits a blue lights. P. phosphoreum is the brightest bacteria in terms of emitting lights compared to other species of luminous bacteria. The total bacterial count gives 4.6 109 CFU/ml with diameter of colony of 0.075 cm which able to emit lights, while lower concentration at 2.0 104 CFU/ml and colony diameter of 0.025 cm give no emission of light. In respect to this, it suggest that concentration of luminous bacteria has role in theprocess of light emission by P. phosphoreum.Key words: Bacteria isolation, bioluminescence bacteria determination, squid (Loligo duvauceli)

oai:ojs.ejournal.undip.ac.id:article/47735 2022-12-05T16:33:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/47735 2022-12-05T16:33:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 3 (2022): Ilmu Kelautan; 253-266 Sarjito, Sarjito; Aquaculture Department, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Ammaria, Hanny; Aquaculture Department, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Helmi, Muhammad; Oceanography Department, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Center for Coastal Rehabilitation and Disaster Mitigation Studies Prayitno, Slamet Budi; Aquaculture Department, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Nurdin, Nurjannah; Research and Development Center for Marine, Coast, and Small Island, Hasanuddin University Marine Science and Fisheries Faculty, Hasanuddin University Setiawan, Riza Yuliratno; Marine Science and Fisheries Faculty, Gadjah Mada University Wetchayont, Parichat; Department of Geography, Srinakharinwirot University Wirasatriya, Anindya; Oceanography Department, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Center for Coastal Rehabilitation and Disaster Mitigation Studies 2022-09-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/47735 Seaweed production; site selection; GIS; hydrodynamics modeling en Indonesia is the second largest producer of red algae in the world with one of the major Kappaphycyus. alvarezii farming areas is in Spermonde Islands, Pangkep Regency, South Sulawesi Province. K. alvarezii production in Pangkep Regency increased every year. However, the availability of natural seaweed can be threatened along with the increasing demand so that seaweed cultivation is necessary. Proper site selection is crucial to guarantee the success of the seaweed farming development. A Geographic Information system (GIS) with geospatial modeling approach was applied for identification of the site selection for K. alvarezii cultivation at the Liukang Tuppabiring District, Spermonde Islands by combining various physical and chemical parameters obtained from in-situ data and hydrodynamics modeling. The parameters are Sea Surface Temperature, salinity, pH, substrate type, current speed, wave height, DO, nitrate, phosphate, and Total Suspended Solid. This research also include the accessibility and the restricted area of shipping lanes for determining the area suitability of K. alvarezii cultivation. This research demonstrates a Geographic Information system with the cell-based geospatial modeling can be effectively used and found the the suitable categorized area for K. alvarezii  is 4,546.28 ha, which is the combination of the suitable area of 4,463.08 ha and highly suitable criteria with an area of 83.2 ha. The potential productivity of wet-weight seaweed can reach 56,825 tons per cycle or 113,650 tons per year. This result suggests the GIS with geospatial modeling approach for developing the area of K. alvarezii culture can be applied in other area.

oai:ojs.ejournal.undip.ac.id:article/554 2020-10-25T22:40:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/554 2020-10-25T22:40:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 3 (2008): Jurnal Ilmu Kelautan; 139-146 Wijayanti, Dyah Permata Hirose, M. Hidaka, M. 2010-11-15 04:52:41 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/554 en DGGE (Denaturing Gradient Gel Eiectrophoresis) is the most powerful methods for mutation detection currently available. In DGGE, DNA fragments of the same length but with different sequences can be separated. The sensitivity of DGGE to slight sequence differences is high since single base changes could be observed. There has been a debate about whether planulae of the coral Pocillopora damicornis are produced sexually or asexually. If produced sexually, planulae are expected to be genetically different from each other and also from their parents. In order to detect possible genetic difference between planulae and their parents, DGGE analysis of ITS2 region of rDNA was used. If there are genetic differences, it is proved that planulae are produced sexually. A total 49 adult colonies and 78 planulae from 11 localities were used for analysis. However, only in 2 families (BiseO1#O2 and Bise02#03YL) showed different DGGE profile, suggesting genetic difference between parent and offspring. The attempt to detect genetic difference in planulae of P. damicornis and their parents using DGGE method was not completely success since DGGE method can not prove clearly the genetic difference between parent and offspring. However, the possibility that DGGE method is applicable for studying coral can be suggested. PCR-DGEE amplification may perform with new STR (short tandem repeat) polymorphic loci of P. damicornis that currently found to answer whether planulae are produced sexually or asexually. Key words : Pocillopora damicornis, planula, DGGE, sexual reproduction, coral

oai:ojs.ejournal.undip.ac.id:article/11109 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/11109 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 4 (2015): Ilmu Kelautan; 215-222 Hindarti, Dwi; Research Centre for Oceanography, Indonesian Institute of Sciences, Jl. Pasir Putih I, Ancol Timur, Jakarta 14430 Arifin, Zainal; Research Centre for Oceanography, Indonesian Institute of Sciences Prartono, Tri; Faculty of Fisheries and Marine Sciences, Bogor Agricultural University Sanusi, Harpasis S.; Faculty of Fisheries and Marine Sciences, Bogor Agricultural University 2015-12-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/11109 id Toxicity of ammonia was evaluated using amphipod Grandidierella bonnieroides to describe its role as confounding factor in sediment quality assessment. Ammonia is a toxic compound that is found naturally in seawater and sediment. High ammonia content in the pore water sediment can be potentially toxic to benthic biota, so that it will interfere with the results of sediment toxicity tests. Laboratory production amphipod was used in this ammonia toxicity test. Water-only toxicity tests was conducted to produce new toxicity data of ammonia, and is expressed as LC50, LOEC and NOEC for benthic amphipod G.bonnieroides. The study resulted the 96-h median lethal concentration (LC50) of ammonia for G. bonnioerides was 65.5 mg.L-1. While the value LOEC (low observed effect concentration) is 56 mg.L-1 and NOEC value (no observed effect concentration) was 32 mg.L-1 . This shows that ammonia has a relatively low toxicity to amphipod and ammonia does not act as a confounding factor in the sediment toxicity test, because the ammonia content in sediment does not pose any significant effect on amphipod survival. It can be concluded that the amphipod has a potential useful as test organism in sediment bioassay for assessing the quality of marine sediment. Moreover, the high dependence of total ammonia toxicity indicates that it is necessary to measure the total ammonia and pH of the medium when testing environmental samples. Keywords: ammonia, amphipod, toxicity, confounding factor, bioasssay Toksisitas ammonia dievaluasi menggunakan amphipod Grandidierella bonnieroides untuk menggambarkan perannya sebagai faktor pengganggu dalam penilaian kualitas sedimen. Amonia merupakan senyawa beracun yang ditemukan secara alami dalam air laut dan sedimen. Kandungan amonia yang tinggi dalam air pori sedimen dapat berpotensi racun bagi biota bentik, sehingga akan mengganggu hasil uji toksisitas sedimen. Amphipod hasil produksi laboratorium digunakan dalam uji amonia. Uji toksisitas dilakukan untuk menghasilkan data toksisitas baru ammonia, dan dinyatakan sebagai LC50, LOEC dan NOEC untuk G.bonnieroides amphipod bentik. Studi ini menghasilkan nilai konsentrasi median letal 96-jam (LC50) ammonia untuk G. bonnioerides adalah 65.5 mg.L-1. Sedangkan nilai LOEC (konsentrasi terendah yang menyebabkan dampak secara signifikan) adalah 56 mg.L-1 dan nilai NOEC (konsentrasi tertinggi yang tidah menyebabkan dampak secara signifikan) 32 mg.L-1. Hal ini menunjukkan bahwa ammonia memiliki toksisitas relatif rendah untuk amphipod dan ammonia tidak bertindak sebagai pengganggu dalam untuk uji toksisitas sedimen, karena kandungan ammonia dalam sedimen tidak menimbulkan pengaruh yang nyata pada survival amphipod. Dapat disimpulkan bahwa amphipod memiliki potensi sebagai biota uji dalam sedimen bioassay untuk menilai kualitas sedimen laut. Selain itu, terdapat ketergantungan yang tinggi toksisitas amoniak terhadap pH, sehingga perlu untuk memantau total amonia dan pH saat melakukan pengujian sampel lingkungan. Kata kunci : ammonia, amphipod, toksisitas, faktor pengganggu, bioassay

oai:ojs.ejournal.undip.ac.id:article/70658 2025-12-21T07:49:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/70658 2025-12-21T07:49:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 3 (2025): Ilmu Kelautan; 438-452 Rozirwan, Rozirwan; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Lestari, Ning Intan; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Winarta, Yoga; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Isnaini, Isnaini; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Putri, Wike Ayu Eka; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Hendri, Muhammad; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Ulqodry, Tengku Zia; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Fauziyah, Fauziyah; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Melki, Melki; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Nugroho, Redho Yoga; Department of Marine Science, Faculty of Mathematics and Natural Sciences, Sriwijaya University Mohamed, Che Abd Rahim; Faculty of Science and Technology, Universiti Kebangsaan Malaysia 2025-09-10 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/70658 Antioxidant; DPPH assay; GC-MS analysis; Phytochemical compounds; Scylla serrata en Mangrove crab (Scylla serrata) as one of the crustacean species, has a variety of bioactive compounds that can be utilized in the field of pharmacology. Antioxidant compounds act as therapeutic agents against degenerative diseases. Banyuasin waters have mangrove vegetation with associated marine organisms that have the potential to be studied for bioactive compounds. This study aims to identify the phytochemical profile quantitatively and qualitatively, samples were collected from mud flats near mangrove ecosystems in Banyuasin waters, South Sumatra. Samples were tested for antioxidant activity using the DPPH test, and IC50 values, qualitative phytochemical identification, and phytochemical profiles were calculated using Gas Chromatography-Mass Spectrometry (GC-MS) analysis. Based on the results of antioxidant testing, the IC50 value of S. serrata extract is 2.25 ppm, the sample is included in the category of very strong antioxidants. Phytochemical test results showed that the compound is thought to contain antioxidant activity from flavonoids and triterpenoids. GC-MS analysis detected major compound groups of alkaloids, purines, and vitamins. Minor compound groups detected amines, terpenoids, monosaccharides, amino acids, fatty acids, silanes, formamides, heterocycles, carboxylic acids, aminoglycosides, naphthalene derivatives, nitriles, amides, glycosides, and peptides. S. serrata extract shows very strong antioxidant activity, with major compounds such as alkaloids, purines, and vitamins. S. serrata extract detected compounds that have been reported as anti-inflammatory, anticancer, antimicrobial, and antiviral. These findings highlight the pharmaceutical potential of S. serrata as a source of bioactive compounds. The results of this study provide valuable information for the development of alternative medicines derived from marine organisms.

oai:ojs.ejournal.undip.ac.id:article/2250 2012-02-28T11:41:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2250 2012-02-28T11:41:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 1 (2006): Jurnal Ilmu Kelautan; 7-10 Azizah, Ria; Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang, Indonesia Ghofar, Abdul; Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2250 en Penelitian ini dilakukan untuk mengetahui mortalitas teritip (Balanus spp.) pada kolektor kayu yang mendapat waktu perendaman yang berbeda dan efek perendaman kayu dalam air tawar terhadap penempelan dan pelepasan teritip (Balanus spp.). Teritip (Balanus spp.) yang dipakai dalam penelitian berasal dari perairan Tambak Lorok di sekitar muara sungai Banjir Kanal Timur. Secara garis besar penelitian terbagi 2 : (1) Pengamatan di lapangan untuk pengumpulan teritip dan (2) Percobaan (indoor) untuk penglepasan teritip dan pengujian kekuatan kayu. Hasil penelitian menunjukkan bahwa lama perendaman teritip dalam air tawar berpengaruh nyata terhadap mortalitas teritip. Penelitian ini juga menunjukkan bahwa perendaman kolektor kayu dalam air sungai selama 4 minggu sebelum dipasang sebagai kolektor dapat menurunkan penempelan larva sampai 10&ndash;20%. Hal ini dapat memberikan implikasi positif dalam pemeliharaan perahu nelayan. Kayu-kayu yang sebelumnya direndam dalam air tawar tidak ditempeli teritip sampai hari ke-8, sedangkan pada kayu yang sebelumnya tidak direndam, sudah ditempeli teritip pada hari ke-2. Teritip yang sudah mati lebih mudah lepas&nbsp; cangkangnya pada permukaan kayu yang&nbsp; sebelum dipasang sebagai kolektor direndam dahulu dalam air sungai (56 %), dibanding pada kayu yang tidak direndam (1,6 %). Hasil pengujian material menunjukkan bahwa kekuatan kayu sebelum dan sesudah perendaman air tawar relatif konstan. Kata kunci : perendaman,&nbsp;Balanus spp., mortalitas, penempelan&nbsp;An experiment was conducted with aims to investigate mortality of the barnacle exposed to different time regimes in freshwater dan to&nbsp; investigate the preventive effects of freshwater-dipping in wooden-plates upon the attachment of cyprids/larvae of the acorn-bernacles Balanus spp. The bernacles were collective from the coastal site of&nbsp; Tambak Lorok in the vicinity of the river mouth Banjir Kanal Timur. The experiments was divided into 2 parts : filed observation and material collection at Tambak Lorok, and indoor experiment. It was shown that dipping of the wooden plates in river for weeks prior to collector setting may reduce the attachment of cyprid larvae by 10&ndash;20%. This result might have positive implication in the maintenance of wooden fishing boots. The wooden materials (dipped in river water prior to usage) may not be attached by cyprids until day-8, compared to day-2 in untreated materials. It was also evident that exposure time in freshwater, both in river water and well-water have highly significant effect upon the mortality of barnacle. The removal of the dead barnacle shells occurred in much greater numbers on the wooden plates dipped in river water prior to setting up as larval collector (56 %), than in untreated materials (1,6 %). The result of material tests showed that the strenght of the wooden materials remained relatively constant prior and after freshwater exposure.Key words: dipping,&nbsp;Balanus spp., attachment, mortality

oai:ojs.ejournal.undip.ac.id:article/22794 2021-10-13T01:05:41Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/22794 2021-10-13T01:05:41Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 4 (2019): Ilmu Kelautan; 164-170 Januar, Hedi Indra; Indonesian Research Center for Marine and Fisheries Product Processing and Biotechnology Pratitis, Asri; Indonesian Research Center for Marine and Fisheries Product Processing and Biotechnology Susilowati, Rini; Indonesian Research Center for Marine and Fisheries Product Processing and Biotechnology 2019-12-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/22794 Marine reserve; Water quality; Eutrophication; index Indonesian Research Center for Marine and Fisheries Product Processing and Biotechnology en Excessive human waste nutrients, which usually consist of nitrogenous and phosphate compounds, are known as the major environmental stresses in coastal waters. Therefore, monitoring of nutrients level is very important in marine reserve park. This study presents an application of multi-metric index in accessing the spatial and temporal level of a nutrient in surface water at Batam City Marine Reserve Park, Indonesia. Research had been done with seasonal and spatial zones on three major islands namely Petong, Abang, and Dedep. Water samples from each station were taken from the surface water. Phosphate, nitrate, nitrite, and ammonia, were analyzed in situ and chlorophyll was conducted in the laboratory by spectrophotometric method. Statistical multi-metric detected the average eutrophication index (EI) value between 0.2-0.7, which is mesotrophic to eutrophic. Petong and Abang zones were categorized as eutrophic, and Dadap was mesotrophic. Continuous nutrients contamination throughout seasonal may be derived from sedimentation and domestic run-off from human-populated islands in the middle and northern region. Therefore, ecosystem rehabilitation and mitigation of anthropogenic run-off are needed to optimise the conservation management. Moreover, Dadap zone as the area with the least anthropogenic pressures is potential to be the core of conservation area in Batam City marine reserve park.

oai:ojs.ejournal.undip.ac.id:article/5136 2017-08-19T22:45:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/5136 2017-08-19T22:45:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 4 (2012): Ilmu Kelautan; 217-225 Hartati, Retno; Program Studi Ilmu Kelautan, Jurusan Ilmu kelautan, Fakultas Perikanan dan Ilmu kelautan,Universitas Diponegoro, Jl. Prof. Soedharto SH. Tembalang, Semarang. Indonesia Telp./Fax. 0247474698. Junaedi, Ali; Program Studi Ilmu Kelautan, Jurusan Ilmu kelautan, Fakultas Perikanan dan Ilmu kelautan,Universitas Diponegoro, Jl. Prof. Soedharto SH. Tembalang, Semarang. Hariyadi, Hariyadi; Program Studi Oseanografi, Jurusan Ilmu kelautan, Fakultas Perikanan dan Ilmu kelautan,Universitas Diponegoro, Jl. Prof. Soedharto SH. Tembalang, Semarang. Mujiyanto, Mujiyanto; Balai Penelitian Pemulihan dan Konservasi Sumberdaya Ikan, Jl. Cilalawi No.1 Jatiluhur, Purwakarta, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/5136 en Lamun merupakan salah satu ekosistem yang berperan penting dalam kehidupan di laut. Penelitian ini bertujuan untuk mengetahui struktur komunitas lamun di Perairan Pulau Kumbang Karimunjawa. Pengamatan lamun di lapangan meliputi identifikasi jenis-jenis lamun, menghitung jumlah individu/tegakan, presentase penutupan dari masing-masing jenis/spesies pada transek. Persen penutupan lamun diamati dengan menggunakan transek kuadrat ukuran 1 x 1 m pada hamparan lamun. Transek ini dibagi menjadi 25 buah kisi ukuran 20 cm2. Satu tegakan lamun merupakan suatu kumpulan dari beberapa daun yang pangkalnya menyatu. Jumlah tegakan diamati langsung dengan visual. Hasil penelitian menunjukkan bahwa Komunitas lamun di perairan kawasan Pulau Parang, Karimunjawa, tergolong komunitas campuran (mixed community) yang terdiri dari 1–5 jenis lamun. Telah ditemukan 6 jenis lamun, yaitu Thalassia hemprichii, Cymodocea rotundata, C. serrulata, Halodule pinifolia, Halodule uninervis dan Halophila ovali di perairan Pulau Kumbang, C. serrulata hanya ditemukan pada saat sampling ke dua bulan September 2012. Pada sampling pendahuluan (Juni 2012), jumlah kerapatan jenis lamun (Tegakan/m²) T. hemprichii merupakan yang tertinggi (77.11) sedangkan yang terendah adalah H. pinifolia (0.56). pada sampling kedua, H. uninervis lebih tinggi dari pada T. hemprichii. Frekuensi jenis lamun pada sampling bulan Juni dan september 2012 yang menunjukkan nilai 0-15,67 dan 0-16 dengan T. hemprichii ditemukan lebih sering dari pada jenis lamun yang lain pada kedua waktu sampling. Penutupan spesies lamun (%/m2) pada sampling bulan Juni dan September 2012 menunjukkan nilai 0,11–15.67 dan 0-29.29. Thalassia hemprichii dan Halodule uninervis mempunyai rata-rata penutupan yang tertinggi masing-masing pada sampling September dan Juni 2012.Kata kunci: lamun, jenis, kerapatan penutupan, Pulau Kumbang, KarimunjawaSeagrass is found in shallow waters that have an important role in marine life and is one of the most productive marine ecosystems. This study aims to determine the structure of seagrass communities in Kumbang Island, Karimunjawa. Data collected during observations in the field include species identification, number of individual/stand, percent cover of each species. Percent cover of seagrass was observed by using square transect with size of 1x1 m. Transect was divided into 25 pieces of smaller size i.e. 20 cm2. The stands of seagrass is a collection of several fused leaf base. The number of stands were directly counted. Sampling were done twice i.e. June and September 2012. The results showed that the seagrass community in the waters of Kumbang island, Karimunjawa, can be classified as mixed community consisting of 1-5 types of seagrass. In total, six species of seagrass were found in the area i.e. Thalassia hemprichii, Cymodocea rotundata, C. serrulata, Halodule pinifolia, Halodule ovali and Halophila uninervis. C. serrulata was only discovered during second sampling in September 2012. In the first sampling (June 2012), the density of seagrass (stand/m²) T. hemprichii was the highest (77.11), while the lowest was H. pinifolia (0.56). The results of second sampling showed that H. uninervis was found to be higher than T. hemprichii. Frequency of seagrass types in June and September 2012 showed the value from 0 to 15.67 and 0-16 with T. hemprichii was found more frequently than other types of seagrass during both sampling time. Percent coverage of seagrass species (%/m2) during June and September 2012 showed the value of 0,11-15.67 and 0-29.29, respectively. T. hemprichii and H. uninervis have the highest average percent cover in September and June 2012 sampling.Key words: seagrass, type, density, Kumbang Island, Karimunjawa

oai:ojs.ejournal.undip.ac.id:article/55549 2023-12-06T06:26:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/55549 2023-12-06T06:26:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 3 (2023): Ilmu Kelautan; 267-277 Octavina, Chitra; Department of Marine Science, Faculty of Marine and Fisheries, Universitas Syiah Kuala Irsad, Muhammad; Department of Marine Science, Faculty of Marine and Fisheries, Universitas Syiah Kuala Al-Ihsan, Muhammad Tareqh; Department of Aquaculture, Faculty of Marine and Fisheries, Universitas Syiah Kuala Niwatana, Julya; Department of Aquaculture, Faculty of Marine and Fisheries, Universitas Syiah Kuala Ulfah, Maria; Department of Aquaculture, Faculty of Marine and Fisheries, Universitas Syiah Kuala Nurfadillah, Nurfadillah; Department of Aquaculture, Faculty of Marine and Fisheries, Universitas Syiah Kuala Agustina, Sri; Department of Marine Science, Faculty of Marine and Fisheries, Universitas Syiah Kuala Nur, Firman Muhammad; Research center for Biosystematics and Evolution, National Research and Innovation Agency Anh, Nguyen Thi Mai; Institute of Marine Environment and Resources, Vietnam Academy of Science and Technology 2023-09-06 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/55549 Aceh northern shore; Brachiopods; baree; lamp shells; Lingula anatina en Brachiopods are a group of ancient marine invertebrates that are still found today, so they are known as "living-fossil". The purpose of this study was to determine reproductive biology through sex ratio approach, gonad maturity stages, body mass weight and growth pattern of L. anatina through size distribution approach, length-weight relationship, and condition factors. This research was conducted from April to December 2021, at the Aceh northern shore. The method used in this research is purposive sampling. The results showed that based on the morphological characteristics, only one species of brachiopods from the class Lingulata was found, namely Lingula anatina Lamarck, 1801. This species has an unequal sex ratio. Analysis of Body Mass Weight (BMW) and Gonado Somatic Index (GSI) shows an inverse relationship where the BMW value is lower than the GSI value. The condition factor of L. anatina also fluctuates every month, this is presumably due to availability of food in habitat. Gonad maturity stages of L. anatina at the locations of Syiah Kuala and Alue Naga were in spawning conditions (stages IV), especially for female L. anatina. These results indicate that the reproductive quality of L. anatina at the Aceh northern shore was maintained due to minimal exploitation from the surrounding community. Furthermore, the biometric (length – weight relationship) of L. anatina in the Aceh northern shore showing an isometric and negative allometric pattern. Basically, allometric growth is temporary, for example due to changes related to gonadal maturity, while isometric growth is a continuous change that is proportional.

oai:ojs.ejournal.undip.ac.id:article/1407 2017-08-19T22:49:45Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1407 2017-08-19T22:49:45Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 1 (2010): Ilmu Kelautan; 33-41 Kasim, Ma’ruf; Faculty of Fishery and Marine Science, Haluoleo University, Indonesia Kampus Hijau UNHALU, Jalan Mokodompit. Andounohu Kendari. Telp: 085656555664 E-mail : marufkasim@hotmail.com 2012-01-29 06:21:58 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1407 en This research was to clarify the dynamic of particulate organic matter (POM) and species composition of phytoplankton in an estuarine. C/N ratio was measured in a C-N Analyzer and phytoplankton was identifying under electron microscope. The seasonal uctuation of POC and PON concentration was generally similar in all stations. POC and PON concentration were generally higher in inert part of estuary during spring and summer and its concentrations seem high at outside part during autumn. From total 128 species of diatoms identied in the Akkeshi-ko estuary, 103 and 102 species of phytoplankton occurred on the upper layer of sediments and in water column, respectively. On the upper layer&nbsp; sediments, there were 12 species of benthic diatoms and 2 species of pelagic diatoms were most common and dominantly occurred in all stations. In water column, 12 species of benthic diatoms and 3 species of pelagic diatoms were most common and predominantly occurred in all stations. The main reason of this condition is the concentration of POM and phytoplankton was increase during spring and summer cause of high input nutrient from outside of estuarine.Key words :&nbsp; particulate organic matter, phytoplankton, benthic diatom, pelagic diatom.&nbsp;Penelitian ini dilakukan untuk mendapatkan gambaran yang jelas mengenai dinamika dari bahan organik terlarut dan komposisi jenis dari fitoplankton pada perairan estuari Hokkaido.&nbsp; C/N ratio diukur dengan menggunakan C/N analyzer dan identifikasi fitoplankton dilakukan di bawah mikroskop elektron. Fluktuasi musiman dari konsentasi PON dan POC dalam perairan relatif sama di seluruh stasiun pengamatan. Konsentrasi POC dan PON relatif&nbsp; lebih tinggi pada bagian dalam Akkeshi estuary selama musim semi dan musim panas dan konsentasi tersebut terlihat lebih tinggi di luar lokasi estuari selama musim gugur. Dari total 128 jenis yang diidentifikasi di lokasi penelitian, 103 spesies fitoplankton ditemukan pada permukaan sedimen dan 102 diantaranya ditemukan mengapung di perairan.&nbsp; Pada permukaan sedimen ditemukan 12 spesies dari diatom bentik dan 2 spesies dari diatom pelagik dan mendominasi lokasi penelitian. Pada kolom air ditemukan 12 spesies dari diatom bentik dan 3 spesies dari diatom pelajik&nbsp; ditemukan dominan dan mendominasi lokasi penelitian. Hal ini disebabkan oleh terjadinya peningkatan bahan organik terlarut dan fitoplankton selama musim semi dan musim panas yang disebabkan oleh peningkatan kandungan nutrien yang berasal dari luar perairan estuari. Kata kunci:&nbsp; Bahan organic terlarut, fitoplankton, bentik diatom, pelagik diatom

oai:ojs.ejournal.undip.ac.id:article/11098 2017-10-27T08:50:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/11098 2017-10-27T08:50:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 4 (2016): Ilmu Kelautan; 191-196 Puspitasari, Rachma; LIPI Purbonegoro, Triyoni; Reseach Centre for Oceanography, Indonesian Institute of Sciences Jl. Pasir Putih 1, Ancol Timur, Jakarta 11048 Indonesia 2016-12-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/11098 en Rapid developments of industry and population growth have lead to ecological pressures on coastal areas. Semarang as capital of Central Java and port city, has an environment sensitivity which is important to be investigated. Sediment is an important part in aquatic environment because acts as sink or source of pollutant and could be used to assess coastal environment health. Three locations had been studied, i.e. Tanjung Mas Port, estuaries of Banjirkanal Barat and Banjirkanal Timur. These locations were compared to assess their health of sediment through elutriate sediment toxicity test. Eighteen grams of sediment from each locations were weighed and placed in 1 L Beaker glass.  Eggs and sperm are taken from spawning of adult green mussel in laboratory.  Thirty mL of sperm was added to the eggs and fertilized eggs were observed microscopically. Fertilized eggs were exposure to elutriate water-sediment from each location for 48 hour. Statistical analysis showed that there are significantly different abnormalities larvae percentage of sites 5, 8 and 13. The highest percentage of abnormality larvae occurred in Port Tanjung Mas, followed by Banjirkanal Timur and Banjirkanal Barat. Lead concentrations in sediments of coastal Semarang was ranged from 10.9 to 15.62 mg.kg-1, with an average of 13.69 mg.kg-1. Lead concentration was decreased form Port, Banjirkanal Timur and Banjirkanal, respectively. The abnormalities of green mussel larva may related to lead contamination. It could be concluded that sediment quality in Port area was very poor compare than other site. Keywords: bioassay, green mussel larvae, sediment, Semarang coastal area

oai:ojs.ejournal.undip.ac.id:article/7088 2017-08-19T22:43:57Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7088 2017-08-19T22:43:57Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 3 (2013): Ilmu Kelautan; 143-149 Kusumaningrum, Hermin Pancasakti; Laboratorium Genetika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Diponegoro, Jl. Prof.Dr. Soedarto, Tembalang, Semarang, Indonesia. 50275 Zainuri, Muhammad; Laboratorium Biologi laut, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Jl. Prof.Dr. Soedarto, Tembalang, Semarang, Indonesia. 50275 2013-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7088 en Udang windu (Penaeus monodon Fab.) merupakan komoditas unggulan Indonesia sedangkan ketersediaan benih udang windu mengalami penurunan mencapai 50% disebabkan serangan berbagai penyakit dan keterbatasan pakan. Aplikasi pakan rekombinan hasil fusi protoplas yang kaya karotenoid telah terbukti meningkatkan bobot dan kelulushidupan larva udang windu skala laboratorium.  Teknik fusi protoplas telah terbukti mampu menghasilkan rekombinan yang memiliki gabungan karotenoid dari berbagai alga sehingga jumlah karotenoidnya semakin meningkat. Dunaliella menghasilkan karotenoid β-karoten dan zeaxantin dalam jumlah besar sedangkan Chlorella menghasilkan lutein, β-karoten dan astaxanthin. Tujuan khusus penelitian ini adalah mengaplikasikan pakan alami hasil fusi protoplas kedua jenis mikroalga pada larva udang windu di Balai Budidaya Air Payau Jepara untuk meningkatkan ketahanan terhadap serangan penyakit.  Penelitian ini melakukan kultivasi induk dan rekombinan diikuti analisis pigmen karotenoid dan aplikasi pakan rekombinan secara in vitro. Aplikasinya pada skala in vitro telah meningkatkan berat badan udang dan kelulushidupannya dibandingkan pakan buatan dan pakan alami saja. Selain itu pertumbuhan pakan rekombinan stabil baik di air tawar maupun air asin, mampu berkembangbiak secara alami dan konsumsinya aman bagi hewan budidaya dan lingkungan. Kata kunci: karotenoid, fusi protoplas , Dunaliella salina, Chlorella vulgaris,   Tiger shrimp (Penaeus monodon Fab.) is one of the main commodities of aquaculture products in Indonesia. The availability of Tiger shrimp larvae has decreased up to 50% due to the attack of various diseases and feed limitation. Application of feed from recombinant of protoplast fusion rich in carotenoids have been shown to increase weight and survival rate of tiger shrimp larvae on laboratory scale. Protoplast fusion technique has been shown to produce a recombinant that has combined various carotenoids from algae thus increasing their catotenoids number. Dunaliella produce carotenoids β - carotene and zeaxantin in large numbers while Chlorella produce lutein, β - carotene and astaxanthin. The specific objective of this research is to apply natural food of protoplast fusion recombinant from both of microalgae to Tiger shrimp larvae in Brackish Water Aquaculture Center Jepara to improve resistance to disease. This study conducted cultivation of parent and recombinant followed by carotenoid pigment analysis and application of recombinant feed in vitro. Application on a in vitro scale have increased body weight and shrimp survival compared to artificial food and natural food. Additionally feed recombinant growth were stable in both freshwater and saltwater. They also able to breed naturally and safe for animal consumption and environmental. Keywords: carotenoid, protoplast fusion, Dunaliella salina, Chlorella vulgaris  

oai:ojs.ejournal.undip.ac.id:article/60828 2024-10-04T07:32:43Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/60828 2024-10-04T07:32:43Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 2 (2024): Ilmu Kelautan; 233-240 Haslianti, Haslianti; Faculty of Marine Sciences and Fisheries, Universitas Halu Oleo Asnani, Asnani; Faculty of Marine Sciences and Fisheries, Universitas Halu Oleo Fristiohady, Adryan; Faculty of Pharmacy, Universitas Halu Oleo Sadarun, Baru; Faculty of Marine Sciences and Fisheries, Universitas Halu Oleo Sutariati, Gusti Ayu Kade; Department of Agrotechnology, Faculty of Agriculture, Universitas Halu Oleo Sundowo, Andini; Research Centre for Pharmaceutical Ingredient and Traditional Medicine, National Research and Innovation Agency Yodha, Agung Wibawa Mahatva; Health Polytechnics of Bina Husada Baharum, Syarul Nataqain; Institute of Systems Biology (INBIOSIS) Universiti Kebangsaan Malaysia Idin, Sahidin; Faculty of Pharmacy, Universitas Halu Oleo 2024-06-20 23:50:43 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/60828 Chlorella sp.; Ethanol extract; Chemicals; Biological Activities; Southeast Sulawesi en Microalgae Chlorella sp. grows in the seas of South-East Sulawesi, Indonesia. However, information on the chemical and pharmaceutical aspects of this species from this region is still limited. Therefore, this research aims to explore the chemical contents and biological activities of Chlorella sp. The sample was collected from the Kali Biru and Nambo waters, Kendari. The microalgae were isolated by the agar plating technique and extracted by ethanol. Chemical content was analyzed by phytochemical screening, Liquid Chromatography-tandem Mass Spectroscopy (LC-MS/MS), Total Phenolics Content (TPC) and Total Flavonoids Contents (TFC). Biological activities evaluation includes antioxidant, toxicity, cytotoxicity and antimicrobial. Antioxidant potency was evaluated by DPPH (2,2-diphenyl-1-picrylhydrazyl) radicals and ABTS (2,2’-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid). Toxicity and cytotoxicity properties were analyzed by BSLT (Brine Shrimp Lethality Test) and MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assays against Breast cancer (MCF-7) cell lines. Antimicrobial potency was tested towards E. coli, S. aureus and C. albicans. The result showed that ethanol extract of Chlorella sp. (EEC) contained phenolics, flavonoids, alkaloids and terpenoids/steroids which were supported by LC-MS/MS data, TPC and TFC with value 150.33 and 33.18 mgGAE.g-1 extract. Seven of ten identified major compounds caused this extract to have antioxidant and anticancer including xanthin, 1,1-Diethyl-3-oxo-2- triazanolate, Azelaic acid, ruspolinone, 6-keto prostaglandin F1a and glycol stearate. In general, the biological activity of EEC is less active than the positive controls for each assay. However, the EEC is more potential to be developed as antioxidant such as sunscreen and anticancer especially breast cancer with IC50 value 151-200 ppm and 100-500 ppm, respectively. 

oai:ojs.ejournal.undip.ac.id:article/1621 2014-12-30T01:00:58Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1621 2014-12-30T01:00:58Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 4 (2009): Jurnal Ilmu Kelautan; 227-233 Wirasatriya, Anindya; Oceanography Study Program, Faculty of Fisheries and Marine Sciences, Diponegoro University, Semarang, Indonesia, Phone/Fax. +62247474698 Email: aninosi@yahoo.co.id Kawamura, Hiroshi; Center for Atmospheric & Oceanic Studies, Faculty of Science,Tohoku University, Sendai, Japan Sakaida, Futoki; Center for Atmospheric & Oceanic Studies, Faculty of Science,Tohoku University, Sendai, Japan 2012-02-06 06:55:40 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1621 en The purpose of this study is to derive new Multi-Channel Sea Surface Temperature (MCSST) equations of AVHRR aboard NOAA-19, which was launched in February 2009.&nbsp; Since the HRPT data transmitted from the satellite are directly received at the Tohoku University in Japan, the study area is the seas surrounding it.&nbsp; Using in situ SSTs measured by drifting buoys, 2248 match-ups (1181 for daytime and 1067 for nighttime) are generated for September - November 2009. The daytime and nighttime match-ups are separated into a half for algorithm tuning and another half for validation.&nbsp; Coefficients of MCSSTs are obtained for daytime and nighttime by applying multiple regression analysis to the match-ups, which consist of brightness temperatures of the AVHRR split-window channels and the in-situ SSTs. Validation using the independent match-ups shows that the retrieved daytime and nighttime SSTs have biases of 0.05 and 0.08&deg;C and root mean square differences of 0.61&deg;C and 0.55&deg;C, respectively. Key words :&nbsp; AVHRR, MCSST, NOAA-19, seas around Japan &nbsp;Tujuan dari kajian ini adalah untuk memperoleh formula Multi-Channel Sea Surface Temperature (MCSST) baru dari AVHRR/NOAA-19 yang diluncurkan pada bulan February 2009. Karena HRPT data yang ditransmisikan dari satelit diterima di Universitas Tohoku, Jepang maka area kajiannya adalah perairan di sekitar Jepang. Dengan menggunakan pengukuran SST in-situ yang didapat dari drifting buouys , sebanyak 2248 match-up data (1181 untuk siang hari dan 1067 untuk malam hari) diperoleh dari data bulan September-November 2009. Kemudian match-up data tersebut dipisahkan menjadi 2 bagian, separuh digunakan untuk mendapatkan formula dan separuhnya lagi untuk validasi. Koefisien formula MCSST diperoleh menggunakan analisa multi regresi terhadap match-up data yang terdiri dari brightness temperature dari kanal AVHRR split window dan SST in-situ. Validasi menggunakan match-up data independen menunjukkan untuk siang hari nilai SST memiliki bias 0.05&deg;C dan Root mean square differences (RMSD) sebesar 0.610C sedangkan untuk malam hari sebesar 0.08&deg;C untuk bias dan 0.55&deg;C untuk RMSD. Kata kunci : AVHRR, MCSST, NOAA-19, perairan Jepang

oai:ojs.ejournal.undip.ac.id:article/15719 2021-10-13T03:59:43Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/15719 2021-10-13T03:59:43Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 1 (2018): Ilmu Kelautan; 63-68 Widianingsih, Widianingsih; Coastal Resources Management Programme, Diponegoro University Zainuri, Muhammad; Faculty of Fisheries and Marine Sciences, Diponegoro University Anggoro, Sutrisno; Faculty of Fisheries and Marine Sciences, Diponegoro University Kusumaningrum, Hermin Pancasakti; Faculty Sciences and Mathematics, Diponegoro University Hartati, Retno; Faculty of Fisheries and Marine Sciences, Diponegoro University 2018-03-03 15:31:36 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/15719 gonad maturity; osmotic; Paracaudina australis en The holothuroid spawning can be succesful depend on varoius factors such as salinity, temperature, primary productivity and other physiological adaptation toward environment influences. The salinity fluctuation is one of the environment factors, which influence and can cause various osmotic pressure of coelomic fluid of Holothoroid and also gonad maturity stage. Holothuroid (sea cucumber), Paracaudina australis, is overexploited in Kenjeran waters, Surabaya, East Java. The study was aimed to reveal relationship between gonad maturity stage and level of osmotic work of sea cucumber P. australis. Fifty samples of P. australis were collected monthly.  Coelomic fluid samples of approximately 200–1000 µl were obtained from all samples using disposable insulin syringes. There were 37 holothuroids classified in the late maturity (stage 5), 74 holothuroid in the earlier maturity stage (stage 1). Gonad maturity stage 5 (late maturity) could be reached on December 2016. Contrasly, the gonad maturity stage 1 (earlier maturity) was found on August 2016. The analysis  of coelomic fluid showed that the average value of level of osmotic work  ranged 70  to 91 mOsm/L H2O in the earlier gonad maturity stage. Contrasly, in the late maturity, the average value of level of osmotic work ranged 118 to 156 mOsm/L H2O. There is relationship between gonad maturation stage and level of osmotic work. From stage of gonad maturity 1 to 5, there were upward trend level of osmotic work in coelomic fluid of P. australis.

oai:ojs.ejournal.undip.ac.id:article/2322 2012-03-02T20:33:46Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2322 2012-03-02T20:33:46Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 3 (2007): Jurnal Ilmu Kelautan; 146-156 Rositasari, Ricky; Bidang Dinamika Laut, Pusat Penelitian Oseanografi, LIPI. Jl. Pasir Putih I, Ancol Timur, Jakarta Utara. Telp: 021.64713850. e-mail: rr6862@yahoo.com Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2322 en Pengamatan tentang kondisi perairan dan pesisir Teluk Lada, Banten telah dilakukan pada bulan Juni, Agustus dan Nopember tahun 2004. Parameter geologi yang diamati mencakup sedimen dasar, kandungan suspensi perairan dan kondisi lingkungan pantai. Pengamatan lapangan meliputi pengambilan sampel suspensi, sedimen dasar serta pengamatan lingkungan di sepanjang pantai. Pengolahan sampel di laboratoriun menggunakan metode gravimetri.&nbsp; Hasil pengamatan menunjukkan kaitan yang erat antara karakteristik sebaran sedimen dasar dan kandungan suspensi perairan dengan kondisi garis pantai. Sebaran sedimen dasar memperlihatkan kecenderungan tingginya sebaran fraksi kasar di lepas pantai sekitar muara sungai-sungai yang terletak di sebelah Tenggara Tanjung Lesung. Keadaan ini menunjukkan adanya proses abrasi aktif di sepanjang pesisir timur Tanjung Lesung hingga sekitar Ciseukeut. &nbsp;Faktor lingkungan yang sangat berpengaruh terhadap kondisi geologis sepanjang pesisir Teluk Lada adalah dinamika air.Kata kunci : padatan tersuspensi, sediment dasar, distribusi, garis pantaiThe west coast of Banten Province is considerably potential for various economic activities. Research on oceanographic condition of Lada Bay, Banten was conducted during the month of June, August and November 2004. Field observation was included sampling for suspended solid and sediment. Gravimetric method was used in laboratory. The result shows that there was relation between sediment distribution, suspension contents and beach line conditions. Sediment distribution along the coastal of Lada Bay indicated the tend of highest accumulation of coarser fraction in the off shore in several river mouths of SE Lesung Cape. This condition showed that there was active abrasion process along the coast of eastern Lesung Cape to Ciseukeut area. Environmental factors which control the coastline dynamics along the coast of Lada Bay were current and wave. Key words: suspended solid, bottom sediment, distribution, beach line

oai:ojs.ejournal.undip.ac.id:article/34602 2021-12-05T18:30:07Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/34602 2021-12-05T18:30:07Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 3 (2021): Ilmu Kelautan; 207-214 https://ejournal.undip.ac.id/index.php/ijms/article/download/34602/103119 Azizah, Anisa Nur; Department of Mathematics, UIN Sunan Ampel Novitasari, Dian C.R.; Department of Mathematics, UIN Sunan Ampel Intan, Putroue Keumala; Department of Mathematics, UIN Sunan Ampel Setiawan, Fajar; Meteorogical, Climatological and Geophysics Agency Surabaya Sari, Ghaluh Indah Permata; Department of Computer Science and Information Engineering, National Taiwan University of Science and Technology 2021-09-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/34602 Salinity; Evaporation; Precipitation; Time Series; Backpropagation en Salinity is the level of salt dissolved in water. The salinity level of seawater can affect the hydrological balance and climate change. The salinity level of seawater in each area varies depending on the influencing factors, that is evaporation and precipitation (rainfall). One way to find out the salinity level is by taking seawater samples, which requires a long time and costs a lot. In this study, the salinity level of seawater can be predicted by utilizing time series data patterns from evaporation and precipitation using artificial neural network learning, namely the backpropagation neural network. The evaporation and precipitation data used were derived from the ECMWF dataset, while the salinity data were derived from NOAA where each data was taken at the coordinate point of 9,625 113,625 in the south of Java island. Seawater salinity, evaporation, and precipitation data were formed into a 7-day time series data. This study conducted several backpropagation architectural experiments, that is the learning rate, hidden layer, and the number of nodes in the hidden layer to obtain the best results. The results of the seawater salinity prediction were obtained at a MAPE value of 2.063% with a model architecture using 14 input layers, 2 hidden layers with 10 nodes and 2 nodes, 1 output layer, and a learning rate of 0.7. Predicted sea water salinity data ranging from 33 to 35 ppt. Therefore, the prediction system for seawater salinity using the backpropagation method can be said to be good in providing information about the salinity level of sea water on the island of Java.

oai:ojs.ejournal.undip.ac.id:article/53261 2023-12-06T06:26:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/53261 2023-12-06T06:26:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 3 (2023): Ilmu Kelautan; 241-250 Apresia, Fadil; Magister of Marine Science Study Program, Faculty of Fisheries and Marine Science, Universitas Diponegoro Ambariyanto, Ambariyanto; Department of Marine Sciences Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Yulianto, Bambang; Department of Marine Sciences Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Payus, Carolyn Melissa; Faculty of Science and Natural Resources, Universiti Malaysia Sabah 2023-09-18 14:32:23 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/53261 Heavy Metal; Vannamei Shrimp Aquaculture; Bioaccumulation Factor; Lifetime Cancer Risk en The North Coast of Central Java receives consignments of waste containing heavy metal contamination from several sources, resulting in a decrease in water quality on the coast. Heavy metal contamination in water sources, such as Pb, Cd, and Cr that will be used in shrimp farming. The impact of Pb, Cd, and Cr can have several adverse effects, such as health risk, ecological imbalance, reduce shrimp growth and productivity, environment pollution. The research was conducted to analyze heavy metal contamination levels in ponds and vannamei shrimp yields on the northern coast of Central Java. The method involved collecting shrimp, water, and sediment samples at nine different locations (Dampyak; Suradadi; Kedongkelor; Danasari; Nyamplungsari; Pesantren; Depok; Wonokerto; Degayu). Heavy metal data were analyzed with SPSS. The mean lead concentrations were 0.52+0.19 mg.kg-1 in sediment, 0.66+0.11 mg.kg-1 in water, and 0.86+0.18 mg.kg-1 in shrimp. Cadmium levels were measured in soil (0.028+0.03 mg.kg-1), water (0.027+0.021 mg.kg-1), and shrimp (0.011+0.004 mg.kg-1). The mean chromium concentrations were 0.51+0.25 mg.kg-1 in sediment, 0.93+0.40 mg.kg-1 in water, and 0.95+0.11 mg.kg-1 in shrimp. Based on the calculation of the average BAF x &gt; 1.0, vannamei shrimp on the northern coast of Central Java have the capability of becoming bioaccumulation and bioindicators. The consumption of vannamei shrimp for 70 years has a lifetime risk of developing cancer due to the LCR value of x &gt; 10-6 on the northern coast of Central Java.

oai:ojs.ejournal.undip.ac.id:article/67105 2024-12-27T01:22:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/67105 2024-12-27T01:22:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 4 (2024): Ilmu Kelautan; 576-586 Widiarti, Riani; Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Indonesia Ilyas, Ahmad Jutrzenka; Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Indonesia Triputra, Kresnanda; Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Indonesia Kusuma, Muhammad Praja; Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Indonesia Rachman, Arief; Oceanography Research Centre, National Research and Innovation Agency Hii, Tan Toh; Faculty of Agricultural and Forestry Science, Universiti Putra Malaysia 2024-12-11 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/67105 Benthic; HAB; PCA; Reefs; Substrate en Damage to coral reef ecosystems and changes in water quality are capable of increasing the abundance of benthic dinoflagellates which could cause Ciguatera Fish Poisoning (CFP). Therefore, this research aimed to observe spatial and temporal abundance of those potential benthic dinoflagellates and analyze their relationship with environmental factors. Sampling was carried out on September 21-24, 2023 in Pramuka Island, Seribu Islands district, with different treatments, namely depth, location and time. Research conducted by deploy several series of artificial substrates into the waters, and the benthic dinoflagellates were collected from the artificial substrate placed in 1, 3, and 5 meter of water depths for 24, 48, and 72 hours at Odi, Mazu, and Villa Delima Piers. Cell densities were determined by enumeration using a Sedgewick Rafter Counting Chamber under a light microscope, and the relationship with environmental parameters was analyzed by using Principal Component Analysis (PCA). The results showed that 4 genera of benthic dinoflagellates which had the potential to cause CFP, were attached to the artificial substrate, namely Amphidinium, Coolia, Ostreopsis, and Prorocentrum. Prorocentrum cells were observed in highest number on artificial substrates at every treatment with different depths, locations, and times. Furthermore, the PCA analysis showed the abundance of Prorocentrum was influenced by the most typical environmental parameters at each depth, location, and time, namely temperature, nitrate, DO, and light intensity. The research provided valuable information on the benthic dinoflagellates both spatially and temporally, through international standard methods in order to prevent and anticipate negative impacts caused by CFP.

oai:ojs.ejournal.undip.ac.id:article/1851 2017-08-19T22:47:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1851 2017-08-19T22:47:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 2 (2011): Ilmu Kelautan; 86-94 Limantara, Leenawaty; Ma Chung Research Center for Photosynthetic Pigments, Universitas Ma Chung Teknik Industri, Universitas Ma Chung. Jl. Villa Puncak Tidar N-01, Malang 65151 Jawa Timur, Indonesia e-mail: leenawaty.limantara@machung.ac.id Heriyanto, Heriyanto; Ma Chung Research Center for Photosynthetic Pigments, Universitas Ma Chung 2012-02-12 08:24:20 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1851 id Rumput laut coklat merupakan salah satu sumber daya alam laut yang belum dimanfaatkan secara optimal oleh masyarakat Indonesia. Warna rumput laut coklat berasal dari salah satu pigmen dominan yang terdapat dalam rumput laut ini yaitu fukosantin, yang bermanfaat sebagai anti-kanker dan anti-obesitas. Penelitian mengenai proses optimasi ekstraksi fukosantin pada rumput laut coklat belum banyak dilakukan, sehingga penelitian ini bertujuan&nbsp; untuk&nbsp; menentukan&nbsp; pelarut&nbsp; organik&nbsp; polar&nbsp; yang&nbsp; dapat&nbsp; mengekstrak&nbsp; fukosantin&nbsp; secara&nbsp; optimal. Fukosantin diekstraksi dari Padina australis Hauck menggunakan lima jenis pelarut organik polar, yaitu: aseton, asetonitril,&nbsp; dimetil&nbsp; sulfoksida (DMSO),&nbsp; etanol&nbsp; dan&nbsp; metanol.&nbsp; Berdasarkan&nbsp; hasil&nbsp; analisis&nbsp; spektrometri,&nbsp; nilai absorbansi pada panjang gelombang serapan maksimum (&lambda;mak) fukosantin dari spektra serapan ekstrak kasar pigmen, Padina australis Hauck yang diekstraksi dengan pelarut metanol memiliki nilai absorbansi relatif tinggi yaitu 0,9338 hampir sama ketika DMSO dan etanol digunakan sebagai pelarut ekstraksi. Hasil ini diperkuat oleh hasil analisis kandungan fukosantin dengan metode Kromatografi Cair Kinerja Tinggi (KCKT) dimana kandungan fukosantin mencapai 2,6049 mg/g berat kering dengan pelarut metanol dan kandungan fukosantin ini lebih tinggi 1,08-1,71 kali dibandingkan menggunakan pelarut organik polar lainnya. Kemurnian fukosantin dapat ditentukan berdasarkan nilai persentase luas puncak fukosantin (isomer cis dan trans fukosantin) terhadap luas dari seluruh puncak pigmen yang dapat dipisahkan pada kromatogram KCKT. Pelarut metanol memiliki nilai persentase luas puncak fukosantin relatif tinggi yaitu 60,11%. Berdasarkan hasil penelitian ini maka metanol merupakan pelarut yang terbaik untuk mengekstrak fukosantin dari Padina australis Hauck. Kata kunci: pelarut organik polar, ekstraksi, kandungan fuksosantin, Padina australis Hauck&nbsp;Brown seaweed, is one of marine natural resources, grows naturally and abundantly at Indonesian coastal waters, and yet Indonesians have not utilized it optimally. The color of brown seaweed ascribes to one kind of dominant pigments that this seaweed contains, namely fucoxanthin. Fucoxanthin has potent beneficial effects on human&nbsp; health,&nbsp; such&nbsp; as&nbsp; anti-cancer&nbsp; and&nbsp; anti-obesity&nbsp; properties.&nbsp; However,&nbsp; the&nbsp; research&nbsp; concerning&nbsp; the optimization of fucoxanthin extraction on brown seaweed has not been much done. Therefore, the purpose of this research is to determine the polar-organic solvent that can optimally extract fucoxanthin. Fucoxanthin was extracted from Padina australis Hauck by using various polar-organic solvents (such as acetone, acentonitrile, dimethyl sulfoxide (DMSO), ethanol and methanol). The result of spectrometry analysis, absorbance values at maximum absorption wavelength (&lambda;mak) of fucoxanthin from absorption spectra of pigment-crude extracts, showed that Padina australis Hauck extracted by methanol solvent has a relatively high absorbance value, i.e. 0.9338. This absorbance value was almost of the same value when DMSO and ethanol solvents are used as extraction solvent. This result supported the result of fucoxanthin content analysis by High Performance Liquid Chromatography (HPLC), where fucoxantin content was 2.6049 mg/g dry weight and this fucoxanthin content is 1.08-1.71 times higher when another polar-organic solvent was applied. The purity of fucoxantin can be determined from area percentage of fucoxantin peaks (cis and trans isomers fucoxanthin) toward the area of all pigments peaks that could be separated on HPLC chromatogram. Methanol solvent has a high area percentage value of 60.11%. Based on these experimental results, it can be claimed that methanol solvent is the best solvent for fucoxanthin extraction from brown seaweed Padina australis Hauck. Key words: polar-organic solvent, extraction, fucoxanthin content, Padina australis Hauck

oai:ojs.ejournal.undip.ac.id:article/19362 2019-03-26T05:30:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19362 2019-03-26T05:30:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 3 (2002): Jurnal Ilmu Kelautan; 158-163 Thamrin, Thamrin; Fakultas Perikanan dan IImu Kelautan, Universitas Riau. 2009-03-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19362 en Alveopora japonica Eguchi memproduksi tipe planula dalam bentuk normal dan abnormal (kembar). Kedua tipe planula-planula ini mampu menempel, melakukan metamorfosis dan tumbuh. Planula kembar mampu menempel sebagai mana planula normal bila disediakan substrat (substrat dari alam). Tipe planula­planula kembar ini diperkirakan menempel sangat dekat dengan induknya. Akan tetepi, kecepaten penempelannya berbeda nyata antara berbeda substrat dan sebagian kecil planula menempel pada batu hitam (black shale) dan ubin keramik dalam 4 minggu. Kondisi permukaan substrat yang ditutupi oleh microorganisme tidak begitu penting dalam penempelan, dan tipe substrat sendiri mungkin jauh lebih penting menentukan keberhasilan planula-planula ini dalam penempelan.Kata kuncl: karang; Alveopora japonica; planula; substrate; penempelan   Alveopora japonica Eguchi produced normal and abnormal (fused) type of planulae. Both planulae types were capable in settling, metamorphosing and growing. Branched planulae could settle in the same as normal planulae when there were introduced to an appropriate substrate type (the natural substret). These fused planulae types were predicted to settle very close to their parents. However, settlement rate was significantly different among different substrate types and small number of planulae settled on black shale and tiles during 4 weeks. The surface condition of substrate covered by organic coating may not be so important in settlement, and the substrate type itself might be much more essential for determining the successof these planulae in settlement.Keywords: coral; Alvopora japonica; planulae; substrate; settlement

oai:ojs.ejournal.undip.ac.id:article/2360 2012-03-04T14:48:48Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2360 2012-03-04T14:48:48Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 2 (2004): Jurnal Ilmu Kelautan; 61-66 Trianto, Agus; Lab. Bioteknologi Kelautan, Jur. Ilmu Kelautan, FPIK, UNDIP. Tilp 024 7474 698 HAS, Yan Yan; Lab. Bioteknologi Kelautan, Jur. Ilmu Kelautan, FPIK, UNDIP. Tilp 024 7474 698 Ambariyanto, Ambariyanto; Lab. Bioteknologi Kelautan, Jur. Ilmu Kelautan, FPIK, UNDIP. Tilp 024 7474 698 Murwani, Retno; Pusat Kajian Makanan dan Obat Tradisional, Lembaga Penelitian, UNDIP Fakultas Peternakan Universitas Diponegoro Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2360 en Beberapa jenis organisme laut merupakan sumber alam yang potensial untuk bahan obat. Salah satu sumber daya laut yang cukup potensial untuk dapat dimanfaatkan adalah gorgonian Isis hippuris. Hewan ini hidup di ekosistem terumbu karang tersebar di perairan dangkal dan jernih terutama di pertengahan dasar karang. Tujuan penelitian ini adalah untuk mengetahui aktivitas toksisitas ekstrak gorgonian Isis hippuris terhadap nauplius Artemia salina, mengetahui LC50 -24 jam fraksi toksik dan mengidentifikasi senyawa yang berperan dalam toksisitas. Penelitian dilaksanakan di laboratorium Ekplorasi dan Bioteknologi Ilmu Kelautan UNDIP, Teluk Awur Jepara. Hasil penelitian menunjukan perlakuan ekstrak gorgonian I. hippuris fraksi etil asetat terhadap nauplius A. salina dari 12 fraksi KKT diperoleh 5 fraksi KKT yang toksik. Berdasarkan analisa probit diketahui fraksi KKT 9 memiliki aktivitas toksik terbaik dengan nilai LC 50-24 jam sebesar 16,98 ppm. Hasil identifikasi dengan GC/MS diperoleh golongan senyawa-senyawa Hidrokarbon dan Asam lemak yaituNaphthalene, Xylane, Phenylacetonitrile, 1,2 Benzenedicarboxylic dan senyawa turunan phenol.Kata kunci: Isis hippuris, Artemia salina, toksisitas, BSLT.Several marine organisms are known to have bioactive substances which are very potential for drugs materials. One of this organism is gorgonian, Isis hippuris which live in coral reef ecosystems. The objective of this study is to investigate I. hippuris extract toxicity to nauplius of brine shrimp Artemia salina. This was done by calculating LC50-24 h and followed by identifying its compound. This study was done at Exploration and Biotechnology Laboratory, Marine Science department. UNDIP, Awur Bay, Jepara. The results showed that from 12 ethyl acetate fraction open column chromatography, 5 of them were toxic. Based on Probit analysisit was found that fraction 9 was the best fraction which gave LC50-24 h 16,98 ppm. Based on GC/MS results there are several compound found i.e. hydrocarbon, lipid acid (napthalene, xylane, phenylacetonitrile, 1,2benzenedicarxulic) and phenol derived compound.Key words : Isis hippuris , Artemia salina, toxicity, BSLT

oai:ojs.ejournal.undip.ac.id:article/44908 2022-09-06T08:34:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/44908 2022-09-06T08:34:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 2 (2022): Ilmu Kelautan; 159-168 Mas’ud, Faisol; Department of Aquatic Resource Management, Faculty of Fisheries, Universitas Islam Lamongan Santanumurti, Muhammad Browijoyo; Department of Aquaculture, Faculty of Fisheries and Marine, Universitas Airlangga||Indonesia Department of Marine Biology, Faculty of Marine Science, King Abdulaziz University||Saudi Arabia Gabr, Mohamed Hosny; Department of Marine Biology, Faculty of Marine Science, King Abdulaziz University Jamal, Mamdouh T; Department of Marine Biology, Faculty of Marine Science, King Abdulaziz University Fanni, Norma Aprilia; Department of Aquatic Resource Management, Faculty of Fisheries, Universitas Islam Lamongan Saad, Moch; Department of Aquatic Resource Management, Faculty of Fisheries, Universitas Islam Lamongan 2022-06-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/44908 Algae; Absorption; Water Pollution; Heavy Metal; Gresik en The fisheries potential in Gresik Regency is in danger from industrial lead (Pb) pollution. One possible solution is using Sargassum crassifolium, which acts as an absorbent to eliminate Pb in waters. S. crassifolium is characterized by its great affinity for metal cations to bind heavy metal content. This study aimed at finding the effect of S. crassifolium in different forms (wet, dry, and alginate) to absorb Pb content in water. This research was conducted from July to September 2020. The water sample was taken from Gresik Regency and S. crassifolium was obtained from farmers in Talango Island, Sumenep District, Madura. The effectiveness test of the three treatments was conducted based on contact time and biomass factor. Based on the contact time, each treatment was compared with the contact time (1, 7, and 14 days) with 10 g mass per treatment. Meanwhile, for the biomass factor, each treatment was compared by weight (10, 20, and 30 g) for 7 days. The contact time showed that in 14 days, the alginate form of S. crassifolium had the highest absorbent power with 1.370±0.0034 mg.L-1 of lead absorbed and 100% absorbed value. Based on the absorbent mass treatment, 10 g alginate gave the best result with the absorbed lead of 1.364±0.0028 mg.L-1 and an absorption value of 99.71%. The water quality showed that parameters of Dissolved Oxygen (DO), salinity, and nitrates from Gresik Regency were not above standard due to heavy metal pollution. S. crassifolium treatment could decrease the nitrite and nitrate values while increasing DO although still below the standard. This study indicated that 10 g alginate of S. crassifolium in 14 days was effective as a bio-absorbent for Pb heavy metal.

oai:ojs.ejournal.undip.ac.id:article/545 2020-10-25T22:29:19Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/545 2020-10-25T22:29:19Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 2 (2008): Jurnal Ilmu Kelautan; 73-78 Setyati, Wilis Ari Subagiyo, Subagiyo 2010-11-12 11:00:06 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/545 id Telah dilakukan skrining bakteri yang mampu menghasilkan metabolit sekunder dari karang lunak&nbsp;Sinularia sp,&nbsp;ekstraksi metabolit sekunder serta uji bioaktivitasnya terhadap&nbsp;E.&nbsp;coli,&nbsp;S.aereus,&nbsp;V.&nbsp;harveyi. Pengambilan karang lunak dilakukan di perairan Pulau Panjang dengan metode scuba diving. Bakteri yang berasosiasi&nbsp;dengan karang lunak diisolasi dengan metode spread plate menggunakan media Zobells. Aktivitas antibakteri&nbsp;dari semua isolat yang diperoleh diuji dengan metode difusi&nbsp;agar&nbsp;menggunakan paper disk. Isolat yang&nbsp;menunjukan aktivitas antibakteri tertinggi dilakukan ekstraksi dan fraksinasi&nbsp;terhadap&nbsp;metabolit sekunder yang&nbsp;disekresikan. Ektraksi dan fraksinasi dilakukan dengan metode kromatografi lapis tipis dan kromatograff kolom.&nbsp;Berdasarkan hasil penelitian dapat diskrining&nbsp;15&nbsp;isolat bakteri yang berasosiasi&nbsp;dengan&nbsp;karang lunak Sinularia&nbsp;spyang mempunyai kemampuan menghasilkan metaboplit sekunderyang bersifat antibakteri. Hasil uji kuantitatif&nbsp;diperoleh 6 isolat terpilihyang mempunyai aktivitas antibakteri&nbsp;tinggi. Hasil&nbsp;identifikasi&nbsp;menunjukan bahwa&nbsp;isolat-isolat tersebutadalah&nbsp;Vibrio pelagius II,&nbsp;Moraxella,&nbsp;Vibrio anguillarum.&nbsp;Berdasarkan hasil ekstraksi diperoleh 5 fraksiyang berasal dari ekstrak klorofbmn metabolit sekunder dari&nbsp;Moraxella spyangmenunjukan&nbsp;aktivitas antibakteri&nbsp;&nbsp; Fraksi III&nbsp; merupakan fraksiyang paling aktifterhadap&nbsp;E colidan&nbsp;S.&nbsp;aereus,&nbsp;V.&nbsp;harveyi .Kata&nbsp;kunci: Bioaktivitas, ekstrak kloroform , metabolit sekunder,&nbsp;Sinularia&nbsp;sp.

oai:ojs.ejournal.undip.ac.id:article/9963 2020-04-17T06:01:58Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9963 2020-04-17T06:01:58Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 1 (2016): Ilmu Kelautan; 1-8 Jazza, Salih Hassan; Department of Biology, College of Science, University of Missan, Missan Al-Adhub, Abdul Hussain Y.; Department of Biology, College of Science, University of Basrah, Basrah Al-Saad, Hamid T.; Department of Marine environmental Chemistry, Marine Science Center, University of Basrah, Basrah 2016-03-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9963 en The present study was performed to have knowledge of Polycyclic Aromatic  Hydrocarbonspollution status in water. The samples were collected during two seasons (winter and summer 2012 ,2013) from four different stations) Al-Magideh, Treatment unit, Al-Husaichi and Al-Zubair) distributed along Al-KahlaaRiver in Missan province, in addition to reference station lies on the Tigris river before  25 Km  from entering to Amara city. The concentrations of PAHs were determined in by using capillary Gas Chromatography. Results of the present  study revealed that the total concentrations of PAHs  in dissolved fraction  ranged from 0.739 ng.l-1 in Reference station to 1.974 ng.l-1 in Treatment unit during winter, and from 0.300 ng.l-1 in Reference station to 1.125 ng.l-1 in Treatment unit during summer, while in the particulate fraction they varied from 0.79 ng.g-1 dry weight in Reference station to 24.42  ng.g-1 dry weight in Treatment unit during winter, and from 4.369 ng.g-1 dry weight in Reference station to 10.545 ng.g-1 dry weight in Al-Husaich during summer. It had been noticed that there were a predominance of high molecular weight PAHs on low molecular weight, while  BaA/(BaA+Chr) ratio in water ranged from 0.218 to 0.804. InP/(InP+BghiP) ratio ranged between 0 and 0.578,whereas Fl/Pyratio ranged between 0.150 and 2 ,this give an indication of  the origin  of PAHs compounds in water which were mainly pyrogenic and few from them  petrogenic. Keywords: polycyclic aromatic hydrocarbons, PAHs, water, pollution

oai:ojs.ejournal.undip.ac.id:article/70014 2025-12-21T07:49:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/70014 2025-12-21T07:49:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 3 (2025): Ilmu Kelautan; 345-358 Wiharyanto, Dhimas; Department of Aquatic Resource Management, Faculty of Fisheries and Marine Science, Borneo University Ilman, Muhamad; The Nature Conservancy Salim, Gazali; Department of Aquatic Resource Management, Faculty of Fisheries and Marine Science, Borneo University Hidayat, Wahyu; Department of Aquatic Resource Management, Faculty of Fisheries and Marine Science, Borneo University Ransangan, Julian; Borneo Marine Research Institute, Universiti Malaysia Sabah Arief, Mochamad Candra Wirawan; Department of Fisheries, Faculty of Fisheries and Marine Science, Universitas Padjadjaran Zahidah, Zahidah; Department of Fisheries, Faculty of Fisheries and Marine Science, Universitas Padjadjaran Rahman, Abdur; Universitas Lambung Mangkurat Mujiyanto, Mujiyanto; Research Center for Conservation of Marine and Inland Water Resources, National Innovation Research Agency 2025-09-10 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/70014 Avicennia alba; coastal restoration; community-based conservation; mangrove survival en This research examined the post-rehabilitation dynamics of the mangrove ecosystem in the Mangrove and Crab Conservation Area, Tarakan, North Kalimantan, four years after the launch of a community-based restoration program in 2019. The objectives were to evaluate species composition, vegetation structure, and the survival of mangrove seedlings within rehabilitated plots. The sampling was done on purpose in areas that show the main ecological features of the site. This study found five types of mangrove trees: Avicennia alba, Rhizophora mucronata, Avicennia marina, Sonneratia alba, and Xylocarpus granatum. It is fewer than the ten species that were there in the past. Among these, Avicennia alba consistently dominated both the mature and seedling stages, recording the highest relative density (72.56%), frequency (42.86%), and canopy cover (78.08%). Its naturally regenerating seedlings reached a survival rate of 52%, substantially higher than the 17% recorded for planted Rhizophora mucronata. The Avicennia alba is particularly well adapted to the prevailing site conditions, mainly owing to its tolerance of sediment disturbance and variable salinity. This outcome highlights the importance of Assisted Natural Regeneration (ANR) that employs locally adapted species, offering a more practical, cost-effective, and sustainable approach than conventional planting methods. Although there have been some improvements, the decrease in species numbers shows the ecosystem is still in the early stages of recovery. To make sure it stays healthy and strong for the future, it is important to keep the water flowing properly, reduce human impact, and keep up with regular checks and monitoring.

oai:ojs.ejournal.undip.ac.id:article/592 2012-02-28T08:33:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/592 2012-02-28T08:33:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 2 (2007): Jurnal Ilmu Kelautan; 59-66 Simanjuntak, Marojahan; Bidang Dinamika Laut, Penelitian Oseanografi-LIPI Jl. Pasir Putih 1, Telp. 021-64713850, Jakarta 14430, Fax: (021) 64711948 E mail: ojak_sm@yahoo.com. 2012-02-28 14:51:45 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/592 id Pengamatan kadar oksigen terlarut dan Apparent Oxygen Utilization (AOU) di perairan Teluk Klabat, Pulau Bangka telah dilakukan pada bulan Juni-Juli 2003. Tujuan penelitian ini adalah untuk mengetahui kondisi&nbsp;lingkungan dan distribusi oksigen terlarut serta Apparent Oxygen Utilization (AOU) perairan Teluk Klabat,&nbsp;Pulau Bangka. Contoh air laut diambil dari 20 stasiun penelitian dengan menggunakan Botol Nansen di&nbsp;perahu nelayan dan Botol Niskin di Kapal Riset Baruna Jaya VII pada 3 kedalaman yaitu pada lapisan penvukaan&nbsp;(0 m); 5 meter dan dekat dasar. Kadar oksigen terlarut ditentukan dengan titrasi jodometri berdasarkan&nbsp;metode Winkler. Has/7 analisa oksigen terlarut menunjukkan kadar oksigen terlarut di lapisan permukaan (0&nbsp;m); 5 m dan dekat dasar masing-masing berkisar antara 3,54 - 4,08 ml/1; 3,22 - 3,58 ml/I;&nbsp;2,97 - 3,30 ml/&nbsp;I. Kadar ini terus menu run dengan bertambahnya kedalaman. Berdasarkan nilalsuhu dan salinitas yang diperoleh&nbsp;telah dihitung daya larut "apparent oxygen utilization" (AOU) dan derajat kejenuhan oksigen pada lapisan&nbsp;permukaan. Di lapisan permukaan sampai dekat dasar diperoleh kisaran nilai AOU yaitu - 1,07 sampai 0,09&nbsp;ml/1 dengan nilai AOU yang negatip diperoleh sebanyak 4 % sedangkan positip 96 % di lapisan permukaan.&nbsp;Dari hasil penelitian diperoleh konsentrasi oksigen terlarut yang belum menunjukkan dampak negatif terhadap lingkungan perairan.&nbsp;Kata kunci: Apparent Oxygen Utilization (AOU),&nbsp;&nbsp;&nbsp;oksigen terlarut, Teluk Klabat&nbsp;Observation of dissolved oxygen concentration in Klabat Bay Waters Bangka Island was carried out on June-July 2003. The aim of research was to know environment condition and dissolved oxygen distribution and Apparent Oxygen Utilization (AOU) values in the Klabat Bay Waters. Water samples from 3 depths (0, 5, bottom depth) were collected from 20 stations by using Nansen bottles on the boat and Niskin Bottles on the Research Vessel Baruna Jaya VII. The dissolved oxygen was analyzed with Iodometric titration by Winkler method. The results showed that the concentrations of dissolved oxygen ranged 3.54 &ndash; 4.08 ml/l ; 3.22&ndash;3.58 ml/l; 2.97 &ndash; 3.30 ml/l were found in surface layer (0 m), 5 m and near bottom depth respectively. These concentrations decreased by depth. The highest concentration was found on the offshore area, while the lowest concentration was found at near coastal. In the surface layer till near bottom depth were found AOUvalues varied between -1.07 to 0.09 ml/l with the AOU negative values was found 4 % and positive 96 % inthe surface layer. The result indicated that dissolved oxygen concentration did not show negative impact inthe Klabat Bay Waters, Bangka Island.Key words: Apparent Oxygen Utilization (AOU), dissolved oxygen, Klabat Bay

oai:ojs.ejournal.undip.ac.id:article/24846 2021-10-13T01:06:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/24846 2021-10-13T01:06:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 3 (2019): Ilmu Kelautan; 121-126 Hartati, Retno; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Zainuri, Muhammad; Department of Oceanography, Faculty of Fisheries and Marine Science, Diponegoro University Ambariyanto, Ambariyanto; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Redjeki, Sri; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Riniatsih, Ita; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Azizah, Ria; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Endrawati, Hadi; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University 2019-09-04 16:16:59 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/24846 fission; Holothuria atra; population; regeneration en Black sea cucumber or Lollyfish are trade name for Holothuria atra, one species of family Holothuriidae abundance in Jepara waters, especially in Panjang Island.  They inhabit on the seabed, in shallow waters on reefs and sand flats or in Seagrass meadows. Beside reproduce sexually, H. atra also do fission (biology), i.e. able to reproduce asexually by transverse fission. Monthly survey has been conducted for three months to determine frequency of fission among H. atra population in Panjang Island waters. In total 891 individu of H. atra inhabit in seagrass meadow mixed with rubble were examimed. In fissiparous sea cucumber, transverse fission are followed by regeneration and in this research identified from external observations. The fission state was divided into three category, i.e. closed wound (Category 1), little regeneration either posterior or anterior part (category 2), moderate regeneration either posterior or anterior part (category 3).   The result showed that the fission frequency was highest during end of rainy season in April (13,21%) and decreased during May (4,61%) and June (4,86%). Body regeneration seem happened fast, since the new individu sea cucumber at category 1 was low but high as category 3. The regeneration were related with the condition of environment.

oai:ojs.ejournal.undip.ac.id:article/4689 2017-08-19T22:45:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/4689 2017-08-19T22:45:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 3 (2012): Ilmu Kelautan; 125-131 Kawaroe, Mujizat; Pusat Penelitian Surfaktan dan Bioenergi, Institut Pertanian Bogor. Bogor. Telp., 0251-8330970, Fax . 0251-8330977 Departemen Ilmu dan Teknologi Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor. Bogor. Indonesia Pratono, Tri; Departemen Ilmu dan Teknologi Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor. Bogor. Indonesia Rachmat, Ayi; Departemen Ilmu dan Teknologi Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor. Bogor. Indonesia Sari, Dahlia Wulan; Pusat Penelitian Surfaktan dan Bioenergi, Institut Pertanian Bogor. Bogor. Telp., 0251-8330970, Fax . 0251-8330977 Augustine, Dina; Pusat Penelitian Surfaktan dan Bioenergi, Institut Pertanian Bogor. Bogor. Telp., 0251-8330970, Fax . 0251-8330977 2012-09-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/4689 en Mikroalga merupakan pabrik sel yang mampu mengkonversi karbondioksida menjadi biofuel potensial, makanan serta bioaktif yang bernilai tinggi dengan bantuan sinar matahari. Tujuan penelitian ini adalah untuk menganalisis laju pertumbuhan spesifik dan kandungan asam lemak 3 jenis mikroalga yaitu S. platensis, Isochrysis sp., P. cruentum. Kultivasi mikroalga murni dilakukan di laboratorium selama 8 hari dengan media Guillard/F2. Proses ekstraksi dilakukan dengan menggunakan metode sokletasi serta pelarut n-heksan. Profil dan kandungan asam lemak mikroalga dilakukan dengan menggunakan kromatografi gas spektrofotometri massa (GC-MS). Hasil penelitian menunjukkan bahwa kepadatan mikroalga tertinggi terdapat pada hari ke-8. Laju pertumbuhan spesifik tertinggi terdapat pada P. cruentum, yaitu 0,37/hari. Spesies mikroalga yang memiliki total konsentrasi asam lemak paling tinggi adalah Isochrysis sp., (96,18%) dan yang terrendah adalah P. cruentum (34,73%). P. cruentum memiliki kadar MUFA tertinggi. Isochrysis sp. memiliki kadar asam lemak tidak jenuh ikatan poli (PUFA) yang lebih tinggi daripada S. platensis.Kata kunci: mikroalga, S. platensis, Isochrysis sp., P. cruentum, asam lemak, pertumbuhan spesifikMicroalgae is cell factory that is capable of converting carbon dioxide to potential biofuel, foods and high-value bioactive with sunlight assistance. The purpose of this study is to analyze the specific growth rate and fatty acid content of S. platensis, Isochrysis sp., P. cruentum. Cultivation of pure microalgae is conducted in laboratory for 8 days with media Guillard/f2. Extraction process is conducted using soxhletation method and hexane as the solvent. Fatty acid profile and content in microalgae is performed using gas chromatography mass spectrometry (GC-MS). The highest density of microalgae found at day 8 cultivation. The highest specific growth rate found in P. cruentum in 0.37/day. The highest and lowest total of fatty acid concentration found in Isochrysis sp. (96.18%) and P. cruentum (34.73%) respectively. P. cruentum has the highest levels of saturated fatty acids (SFA), whereas S. platensis has the highest levels of mono unsaturated fatty acid (MUFA). Isochrysis sp. has lower levels poly unsaturated fatty acid (PUFA) than S. platensis.Key words: microalgae, S. platensis, Isochrysis sp., P. cruentum, growth rate, fatty acid

oai:ojs.ejournal.undip.ac.id:article/52200 2023-11-03T06:35:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/52200 2023-11-03T06:35:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 2 (2023): Ilmu Kelautan; 125-135 Soedibja, Petrus Hary Tjahja; Program of Aquaculture, Faculty of Fisheries and Marine Science, Faculty of Fisheries and Marine Science, Universitas Jenderal Soedirman Hilmi, Endang; Program of Aquatic Resources Management and Magister SDA, Faculty of Fisheries and Marine Science, Universitas Jenderal Soedirman Sulystio, Isdy; Program of Aquatic Resources Management and Magister SDA, Faculty of Fisheries and Marine Science, Universitas Jenderal Soedirman Haryono, Florencius Eko Dwi; Program of Marine Science, Faculty of Fisheries and Marine Science, Universitas Jenderal Soedirman Mahmoud, Hanan Hassan Alsheikh; Department of Fisheries Science in University of Bahri 2023-05-21 10:04:52 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/52200 abundance; brackish water pond; fishery; monoculture; phytoplankton en Saline Nile Tilapia, Oreochromis niloticus (Linnaeus, 1758) and Milkfish, Chanos chanos (Forskal, 1775) polyculture systems in brackish water culture require natural food to sustain their brackish water fish production. Brackish water culture of Saline Nile Tilapia is developed to improve the productivity of abandoned shrimp or crab pond. At present, there are no studies examining the potential of natural food to improve the productivity of these polyculture systems in the brackish water pond located in Tritih Kulon Village, Cilacap, Central Java. To assess the availability of this food source, the diversity and abundance of plankton in the water body were evaluated through analysis. Therefore, this study aimed to analyze plankton diversity in the water body and the relationship between plankton abundance as a natural feed and saline Nile Tilapia productivity in the brackish water polyculture. Phytoplankton and zooplankton were identified according the plankton characteristic available in the references. The results showed that 21 planktons, comprising 12 phytoplankton species and 9 zooplankton groups, were identified. In spite of low plankton diversity, however, this study proved that the plankton abundance positively supported Saline Nile tilapia productivity in the polyculture system with milkfish, as indicated by low mortality (17,5 ±8,59 %; R2= 0.825-0.908), absolute high weight gain (208.2 ± 22,5 gr; R2= 0.881-0.874), and high specific growth (2,28 ± 0.77 % day-1; R2= 0.87-0.91). The productivity of Saline Nile Tilapia in brackish water polyculture with milkfish is supported by the availability of natural food, with 5.95 to 18.50% of their gut content obtained from plankton.

oai:ojs.ejournal.undip.ac.id:article/57449 2024-03-31T21:48:11Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/57449 2024-03-31T21:48:11Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 1 (2024): Ilmu Kelautan; 71-84 Atmaja, Putu Satya Pratama; Department of Marine Science, Faculty of Marine and Fisheries, Udayana University Laharjana, I Ketut Aditya Krisna; Department of Environmental Science, Graduate School, Udayana University Suardana, A. A. Md. Ananda Putra; Research Centre for Oceanography, National Research and Innovation Agency Van Keulen, Mike; Butler Institute, Murdoch University 2024-03-27 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/57449 Conservation; Associated fauna; Lesser Sunda; Seagrass; Biodiversity en Benthic ecosystem has been widely considered as an important feature of seagrass associated fauna, and its function as a grazer and linkage between primary producers and higher trophic level is well known. Though the importance of benthic fauna in seagrass ecosystems has been indicated in many studies, its biodiversity in spatial scale has often been poorly studied. This study aimed at examining the assemblages and diversity of benthic associated fauna in conservation areas (CA) and non-conservation areas (NCA) across the seagrass meadows in Bali and Lombok. This study found that the assemblages and diversity of benthic fauna greatly varied between the meadows. A total of 430 individuals associated to benthic fauna from 24 species were identified in Bali and Lombok. Of these, Gastropods were the highest class of taxa recorded in this study, followed by Bivalvia, Echinodermata, Decapoda, and Amphipoda. Permutation multivariate analysis of variance (PERMANOVA) revealed a significantly different benthic fauna diversity between sites. Non-metric Multidimensional Scaling (nMDS) and Bray–Curtis analysis showed a clear distinction of benthic fauna assemblages between CA and NCA, both in Bali and Lombok. These results indicated that from spatial perspective, different characteristics of seagrass meadows may represent different biodiversity of associated fauna. These differences might be driven by different anthropogenic pressure and variation of substrates among the meadows which may affect the composition of the benthic fauna ecosystems. The implication of this study was to providing baseline data on guiding the appropriate approach and strategies for management and conservations of seagrass ecosystems.

oai:ojs.ejournal.undip.ac.id:article/10826 2021-10-13T06:09:42Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/10826 2021-10-13T06:09:42Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 1 (2017): Ilmu Kelautan; 1-6 Purwiyanto, Anna Ida Sunaryo; Universitas Sriwijaya Agustriani, Fitri; Universitas Sriwijaya 2017-03-01 04:24:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/10826 Hibah Penelitian Unggulan Kompetitif Universitas Sriwijaya No. 215/UN9.3.1/LT/2015 en CO2 is a greenhouse gas that receive more attention than the other gases because the properties of carbon easily deformed and diffuseed. Changes in the concentration of CO2 in the water will impact on changes in the amount of CO2 in the atmosphere that affect sea surface temperatures. It continuously will result in a change of marine capture fisheries. Payung Island is one of the important areas in South Sumatra that acts as the provider of the fishery. This because Payung Island is located in the mouth of Musi and Telang River covered by mangrove, has a very important ecological function. However, the condition of the carbon in the waters of the Payung Island has not explored further. This elementary study is to determine status on Payung Island waters as a sink or source of CO2. The study was conducted in June until August 2015. The research stages include surface water sampling, measurement of the CO2 in the atmosphere, the analysis of the concentration of Dissolved Inorganic Carbon (DIC) and Total Alkalinity (TA), and partial pressure of carbon dioxide (pCO2) calculation.  Atmospheric CO2 were measured insitu, while the DIC and TA were analyzed using titration methods. Partial pressure of carbon dioxide (pCO2) obtained from the calculation using the software CO2Calc using data of  DIC, TA, nutrients and atmospheric CO2. The results showed that the content of DIC and TA on the Payung Island waters has similar distribution pattern  i.e. high in areas close to the river, and getting lower in the area which were closer to the sea. The comparisons between pCO2 atmosphere and pCO2 waters showed that Payung Island waters generally act as a carbon sink in area towards the sea but however, in the territorial waters adjacent to the river as a source of carbon.  Keywords: carbon, marine protected area, Payung Island waters

oai:ojs.ejournal.undip.ac.id:article/2273 2012-02-29T00:02:02Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2273 2012-02-29T00:02:02Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 3 (2005): Jurnal Ilmu Kelautan; 158-164 Susanto, AB; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, UNDIP, Kampus Tembalang, Semarang. Http://www.rumputlaut.org/ HP 08174909243 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2273 en Rumput laut tergolong dalam algae sebagai tumbuhan yang tidak dapat dibedakan antara akar, batang dan daun, sehingga seluruh bagian tumbuhan disebut thallus. Tujuan dari penelitian ini adalah untuk mengetahui laju pertumbuhan harian Eucheuma spinosum dengan metode lepas dasar menggunakan model Cidaun di perairan Karimunjawa. Selama penelitian berlangsung diukur kualitas air meliputi salinitas, temperatur, pH, kecerahan, arus, sedimentasi dan kedalaman. Eucheuma spinosum sebagai materi penelitian diambil dari lokasi budidaya rumput laut SMKN Karimunjawa, Jepara dan penelitian ini dilaksanakan di selat Takak Alu-alu, perairan Karimunjawa, Jepara antara bulan Oktober dan November 2003. Model Cidaun adalah teknik budidayarumput laut yang digunakan khusus untuk daerah berombak besar dengan menggunakan jaring kantong untuk melindungan thallusnya. Metode penelitian ini adalah eksperimen dengan Rancangan Acak Lengkap pola faktorial 2 x 2. Perlakuan terdiri dari jarak tanam (2 m dan 1,5 m) dan kedalaman (70 cm dan 100 cm) dengan 5 ulangan. Berdasarkan hasil penelitian, membuktikan bahwa penggunaan jaring kantong sebagai model Cidaun tidak begitu efektif, bila dilakukan pada musim pancaroba (Oktober-Desember) karena ombak relatif tenang. Sehingga memudahkan tumbuhnya lumut dan epifit lainnya yang mengganggu pertumbuhan Eucheuma spinosum. Berdasarkan analisa sidik ragam terdapat beda nyata pada kedalaman dan interaksi antarperlakuan.Kata kunci : Laju pertumbuhan harian, Eucheuma spinosum, model CidaunSeaweed belongs algae which can not distinguishable among root, leaf and stem, all of parts called thallus. This experiment was aimed to know growth rate of Eucheuma spinosum use off bottom method with theCidaun&rsquo;s model at Karimunjawa waters. The water quality was measured during this experiment such as: salinity, temperature, pH, water brightness, current, sediment, and depth. This experiment used Eucheuma spinosum from the cultivation area of SMKN Karimunjawa, Jepara and was carried out at Takak Alualu bay, Karimunjawa waters, Jepara between Oktober and November 2003. The Cidaun&rsquo;s model is a technique ofseaweed culture used special for the strong wavy area which is using net bag to protect plants. The experimental design used factorial 2 x 2 based on Completely Randomized Design and five replications. The treatmentswere planting distances ( 2 m and 1.5 m) and deepness factors (70 cm and 100 cm). Based on the result explained that the Cidaun&rsquo;s model was not effective if it is applied during the transition season (October-December), because the wave was relatively calm. That way it made easy mosses and associated plant and it effected the growth rate of Eucheuma spinosum. The result of statistical analysis showed that there weresignificant differences between deepness and the interaction among treatments.Key words : Daily Growth Rate, Eucheuma Spinosum, Cidaun&rsquo;s model, net bag, depth and distance.

oai:ojs.ejournal.undip.ac.id:article/31588 2022-05-19T09:28:05Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/31588 2022-05-19T09:28:05Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 4 (2020): Ilmu Kelautan; 135-142 https://ejournal.undip.ac.id/index.php/ijms/article/download/31588/92441 Moelyadi, Felly; Hang Tuah University Utami, Prawesty Diah; Hang Tuah University Dikman, Irmawati M.; Hang Tuah University 2020-11-24 09:11:29 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/31588 in silico; lollyfish; malaria; PfOMPDC en The high level of artemisinin resistance as the antimalarial drug makes the active substances found of lollyfish (Holothuria atra) become a very useful discovery as a new antimalarial drug. The purpose of this research is to find out the inhibitory effect of the active substances of lollyfish against the development of Plasmodium falciparum with in silico method. This is a one-shot experimental study research. Based on the test of potentially active substances of lollyfish through PubChem (https://pubchem.ncbi.nlm.nih.gov/), there are pyrogallol and catechin that have potential as the antimalarial drug. Pyrogallol, chlorogenic acid, catechin dan ascorbic acid have indirect inhibition to P. falciparum Orotidine 5-Monophosphate Decarboxylase (PfOMPDC) through carbon dioxide (CO2) and it is visualized by STITCH DB Version 5.0 (http://stitch.embl.de/). The binding affinity score of catechin, obtained from molecular docking, is higher than other substances and artemisinin. The Physicochemical and pharmacokinetic activity of the substance was predicted through SWISS ADME (http://www.swissadme.ch/index.php), while the toxicity was predicted through Pro-Tox (http://tox.charite.de/protox_II/). Catechin is a substance in lollyfish that is the safest because its lowest toxicity and very effective to be used as the antimalarial drug because of its high lethal dose 50 (LD50). Therefore, active substances in lollyfish have inhibitory effects against the development of P. falciparum based on in silico study.

oai:ojs.ejournal.undip.ac.id:article/52233 2024-03-31T21:48:11Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/52233 2024-03-31T21:48:11Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 1 (2024): Ilmu Kelautan; 133-146 Pasma, Gumilang Ramadhan; Research centre for Hydrodynamic Technology, National Research and Innovation Technology Suharyanto, Hamzah Haru Radityo; Research centre for Hydrodynamic Technology, National Research and Innovation Technology Khoirunnisa, Hanah; Research centre for Hydrodynamic Technology, National Research and Innovation Technology Wijayanti, Reni; Research centre for Oceanography, National Research and Innovation Technology Gumbira, Gugum; Research Center for Hydrodynamics Technology, National Research and Innovation Agency Civil and Industrial Engineering Department, University of Liverpool|| United Kingdom Rachman, Reno Arief; Research Center for Hydrodynamics Technology, National Research and Innovation Agency 2024-03-27 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/52233 Delft3D-FLOW; Hydrodynamic; Manning number; Three-dimensional model en The National Capital Integrated Coastal Development (NCICD) program was prioritized as a disaster reduction technology within the annual target of BRIN in 2022. It is a part of the North Java Coastal Integrated Development Program project. A coastal reservoir development plan at the Cisadane River estuary is one of the outcomes. In this case, hydrodynamic modelling is needed to acquire hydrodynamic properties under the existing condition of Cisadane downstream, and it applied the Delft3D-FLOW model. The bathymetric data used in this simulation was obtained from the assimilation of national bathymetric data with a grid spacing of 180 m and field survey data with a horizontal resolution of 10 m and transect spacing of 200 m seaward of the Cisadane estuary. It has interpolated in a regular structured grid with 100 m and 50 m grid spacing. In addition, other data used are three hourly wind data downloaded from the European Centre for Medium-Range Weather Forecasts (ECMWF) and the daily discharge of the Cisadane River in 2021. Astronomical water level data generated from TPXO 7.2 and TPXO 8 were used in the boundary conditions. These data are simulated using the two and three-dimensional flow model Delft3D-FLOW during November 1 – 15, 2021, using four manning coefficients (n) values, which are 0.03; 0.035; 0.04; and 0.045. The validation formulation used Normalization Root Mean Square Error (NRMSE), resulting in 5.3 - 9.6% for all the manning values and domains. The highest correlation coefficient of current velocity (u-v components) is acquired in the 10 km2 domain with 0.797 for the L3 (bottom layer).

oai:ojs.ejournal.undip.ac.id:article/1612 2012-02-17T22:31:52Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1612 2012-02-17T22:31:52Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 3 (2009): Jurnal Ilmu Kelautan; 138-141 Riniatsih, Ita; Laboratorium Eksplorasi dan Bioteknologi Kelautan Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Kampus Tembalang, Semarang, Indonesia. Telp./Fax +6224 7474698 Setyati, Wilis Ari; Laboratorium Eksplorasi dan Bioteknologi Kelautan Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Kampus Tembalang, Semarang, Indonesia. Telp./Fax +6224 7474698, Email: wilis.setyati@yahoo.com, Hp: 08156504390 2012-02-05 19:53:55 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1612 id Vibriosis merupakan penyakit bakterial yang menyerang udang antara lain disebabkan oleh Vibrio alginolyticus dan Vibrio harveyii.&nbsp; Salah satu upaya perlindungan udang terhadap infeksi vibriosis adalah melalui reduksi jumlah bakteri vibrio di media budidaya dan saluran pencernaan udang. Penelitian ini bertujuan untuk mendapatkan justifikasi pemanfaatan ekstrak dan serbuk simplisia lamun Enhalus acoroides dan Thalassia hemprichii sebagai agensia pengendali bakteri vibrio. Beberapa penelitian membuktikan&nbsp; bahwa lamun mempunyai aktivitas antibakteri. Oleh karena itu perlu dilakukan pengujian&nbsp; jenis lamun lain dan terhadap strain strain bakteri vibrio pathogenik pada udang. Penelitian dilakukan dengan metode eksperimental. Sampel E. acoroides dan T. hemprichii diekstraksi dengan air panas. Pengujian aktivitas antibakteri dilakukan secara&nbsp; in vitro menggunakan&nbsp; agar disc diffusion method. Hasil penelitian menunjukan bahwa ekstrak dan serbuk simplisia E. acoroides tidak menunjukan bioaktivitas terhadap V. alginolyticus dan V. harveyii. Ekstrak T. hemprichii menunjukan bioaktivitas terhadap V. alginolyticus dan V. harveyii. Sedangkan serbuk simplisia T. hemprichii menunjukan aktivitas antibakteri terhadap V. alginolyticus dan V. harveyii setelah 48 jam inkubasi Kata kunci : antibakteri, ektrak panas, serbuk, lamun, vibriosis&nbsp;Vibriosis is&nbsp; a bacterial diseases in prawn which caused by&nbsp; Vibrio including Vibrio alginolyticus and Vibrio harveyii. An effort to protect the prawn of vibrio infection is by&nbsp; reducing the number of vibrio bacteria either in the culture media and/or in the gastrointestinal system of the cultured species. The research aimed to find justification for the use of seagrasess Enhalus acoroides and Thalassis hemprichii as vibrio bacteria control agensia. The research was conducted by experimental method. The initial phase of the study was testing the antibacterial activity in vitro using agar disc diffusion method. The result shows that neither extract nor simplicia of E. acoroides have an effect against the growth of V. alginolyticus and V. Extract of however, significantly shows bioactivity respond against those bacteria and its simplicia powder also showing a similar effect but after 48 hours of incubation. Key words : antibacterial, hot water extract, powder, seagrass, vibriosis

oai:ojs.ejournal.undip.ac.id:article/16634 2021-10-13T04:02:05Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/16634 2021-10-13T04:02:05Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 4 (2017): Ilmu Kelautan; 161-168 M. Al-Hejuje, Makia; Department of Marine Chemistry, Marine Science Center, University of Basrah, Basra, Iraq Al-Saad, Prof. Hamid Talib; Department of Marine Chemistry and Pollution, University of Basrah, Basra, Iraq Hussain, Najah A.; Department of Marine Chemistry, Marine Science Center, University of Basrah, Basra, Iraq 2017-12-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/16634 en Surface water samples were collected monthly from December, 2012 to November, 2013 at the middle part of Shatt Al-Arab Estuary at Basrah city during the low tide period to assess the organic pollution status using the Organic Pollution Index (OPI), and the aquaculture activities using Minimum Operator Concept (MOC). Results of biological oxygen demand (BOD5), ammonium, nitrite and orthophosphate were used to calculate OPI, while dissolved oxygen (DO), total phosphate and turbidity were used to calculate MOC. Results showed that OPI values range from 4.5 - 4.75 referred to weak organic–non organic pollution status. On the other hand, the water of Shatt Al-Arab Estuary can be considered as medium–excellent water for aquaculture activity according to the MOC range (66.67 - 93.33). Keywords: Estuary, Surface water, Organic Pollution Index, Aquaculture activity, Minimum Operator Concept

oai:ojs.ejournal.undip.ac.id:article/2304 2012-03-01T08:38:13Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2304 2012-03-01T08:38:13Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 1 (2005): Jurnal Ilmu Kelautan; 50-60 Rudi, Edi; Staf pengajar pada Jurusan Biologi Fakultas MIPA Universitas Syiah Kuala Banda Aceh dan Mahasiswa Pascasarjana Ilmu Kelautan (IKL) IPB Bogor Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2304 en Terumbu karang merupakan ekosistem yang kompleks dengan karagaman biologi tinggi yang mendukung hasil perikanan dan melindungi pantai dari aksi gelombang. Pasca bencana tsunami pada 26 Desember 2004 silam, belum banyak informasi kuantitatif mengenai kondisi terumbu karang di sekitar perairan Pulau Weh Sabang Nanggroe Aceh Darussalam. Penelitian mengenai kondisi terumbu karang ini dilakukan di enam stasiun pengamatan yang tersebar di bagian barat, tengah dan timur Pulau Weh dengan menggunakan Metode Transek Garis (LIT, Line Intercept Transect) berdasarkan bentuk pertumbuhan (life form) karang dankomponen benthik lainnya. Hasil penelitian memperlihatkan kondisi terumbu karang di perairan Pulau Weh masih baik, seperti di stasiun Benteng, Lhong Angen dan Gapang, namun di beberapa tempat telah memperlihatkan kerusakan mengkhawatirkan yang diperkirakan bukan akibat bencana tsunami, namun karena adanya usaha pemanfaatan sumberdaya alam tidak ramah lingkungan. Tidak ditemukan kerusakan yang serius akibat bencana tsunami terhadap ekosistem terumbu karang diperairan Pulau Weh diperkirakan berhubungan dengan tipe pantai yang pada umumnya berbatu, terjal dan sangat kokoh serta didukung oleh kondisi terumbu karang yang baik sehingga mampu menahan dan meredam aksi gelombang melalui sistem spur and groove.Kata kunci : terumbu karang, Sabang, LIT, tsunamiCoral reefs are complex ecosystems with high biological diversity that support productive fisheries and protect the beach from wave action. After tsunami disaster on last 26 December 2004, there is noquantitative information yet on condition of coral reef ecosystem around Sabang waters, Weh Island,Aceh, Indonesia. This research has been done in sixt station of Weh Island on early April 2005. LineIntercept Transects (LIT) are used to assest the sessile benthic community of coral reef. The community is characterized using lifeform categories which provide a morphological description of the reef community. The result shows that coral reef condition in Sabang Waters, Weh Island, generally is good, especially in Benteng, Lhong Angen and Gapang stations. However, in some sites coral reef condition are bad. There is no serious impact because of tsunami disaster on coral reef condition in Sabang Waters. The bad coral reef condition in some sites may be because of illegal fishing. Rocky shore and good coral reef condition are main factors which protect the beach ecosystem from wave action. Spur and groove system of the coral reef structure acts primarily as a dissipator of the continual wave energy operating on the coastal shoreline, and by dissipating wave energy before it reaches the shore, the beach area is protected from extensive wave action of tsunami.Key words: coral reef, Sabang, LIT, tsunami

oai:ojs.ejournal.undip.ac.id:article/56682 2024-03-31T21:48:11Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/56682 2024-03-31T21:48:11Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 1 (2024): Ilmu Kelautan; 29-36 Hamid, Mansoor Abdul; Functional Foods Research Group, Faculty of Food Science and Nutrition, Universiti Malaysia Sabah Food Technology and Bioprocessing Program, Faculty of Food Science and Technology, Universiti Malaysia Sabah Yeap, Chi Hong; Food Technology and Bioprocessing Program, Faculty of Food Science and Technology, Universiti Malaysia Sabah Mustapha, Wan Aida Wan; Food Science Department, Faculty of Science and Technology, Universiti Kebangsaan Malaysia Martony, Oslida; Politeknik Kesehatan Kemenkes Medan Fatmawati, Fatmawati; Food Technology, Faculty of Agriculture, Universitas Bosowa 2024-03-27 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/56682 polarity; extraction; antioxidant activity; phenolic compound; polar and non-polar compound en Sabah is the main seaweed producer in Malaysia especially red seaweeds which are commercially cultivated for the production of food gum known as carrageenan. Seaweeds are also high in phytochemical such as antioxidant compounds.  Three seaweeds species from the Semporna Seawater, Sabah, namely Kappaphycus alvarezii, Caulerpa lentillifera and Sargassum polycystum were chosen for this study for the analysis of their antioxidant activities.  K. alvarezii species is commercially cultivated whereas the other two (C. lentillifera and S. polycystum) are wild species.  All seaweeds species underwent drying process in a cabinet dryer prior to the analyses.  Six types of solvents which were water, ethanol, methanol, chloroform, ethyl acetate and hexane were used for the extraction process. Every concentrated, extracted solutions were then measured for their antioxidant activities based on total phenolic content (TPC), diphenylpicrylhydrazyl (DPPH) radical scavenging activity, ferric reducing antioxidant power (FRAP) and β-carotene bleaching assay. Results showed that TPC of S. polycystum was significantly higher (p&lt;0.05) than K. alvarezii but not significantly different (P&gt;0.05) from C. lentillifera. Even though the extraction yield of water was the highest, but the greatest antioxidant activity values were seen in methanolic extraction in comparison to the other solvents in TPC, DPPH and FRAP. This indicated that most of the antioxidant compounds in all the three seaweed samples are polar. However, high antioxidant activity in terms of β-carotene bleaching assay were seen in other solvent extractions, which were chloroform, hexane and ethyl acetate. This indicated that seaweed also contain non-polar antioxidant compounds such as β-carotene. Overall, the best extraction method of antioxidant compounds in seaweed samples was using methanol as the extractant.

oai:ojs.ejournal.undip.ac.id:article/7554 2020-04-17T05:59:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7554 2020-04-17T05:59:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 2 (2014): Ilmu Kelautan; 63-74 Putra, Singgih Afifa; Marine and Coastal Resource Management Program, School of Graduate, Bogor Agricultural University, Jl. Agatis No. 1, Bogor, Indonesia. 16680 Damar, Ario; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Jl. Agatis No. 1, Bogor, Indonesia. 16680 Samosir, Agustinus M; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Jl. Agatis No. 1, Bogor, Indonesia. 16680 2014-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7554 en Pulau-pulau Krakatau memiliki dinamika secara geomorfologi, dan berbagai perubahan fisik yang berlangsung memberikan dampak terhadap biota, termasuk pada proses dan tingkat pergantian suksesi komunitasnya. Tujuan penelitian ini untuk menjelaskan kondisi terkini dan proses kolonisasi komunitas karang, termasuk status kerusakan komunitas karang dan disturbansi lingkungan yang mempengaruhinya. Line intercept transect dilakukan di enam stasiun pada dua kedalaman yang berbeda yakni 5 dan 10m. Sedangkan observasi terhadap komunitas koral dilakukan dengan perekaman video. Hasil penelitian ini menunjukkan bahwa suksesi atau perkembangan komunitas (i.e. kolonisasi) karang yang dijumpai di Pulau Anak Krakatau masih mengindikasikan tahap awal kolonisasi, berbeda dengan komunitas karang yang dijumpai di Pulau Rakata dan Panjang. Diversifikasi komunitas karang di kedua pulau tersebut, menunjukkan dominansi spesies oportunis dan pioner (i.e. Pocillopora dan Seriatopora) yang umum dijumpai di Anak Krakatau sudah tergantikan. Dominansi dari beberapa spesies karang telah mengindikasikan terjadinya proses eksklusi kompetitif di antara komunitas karang. Tiga tipe komunitas karang yang dijumpai dapat dibedakan menurut karakteristik masing-masing kawasan, yaitu komunitas kawasan terpapar, semi terpapar/terlindung, dan terlindung. Kerusakan komunitas karang di Krakatau berdasarkan kriteria indeks kerusakan karang (CDI) sudah termasuk kedalam kategori wilayah “hot spot”, dimana sangat memerlukan perhatian, pengawasan, pengamatan atau restorasi komunitas karang. Hasil penelitian ini memberikan gambaran bahwa terjadinya kolonisasi dan tingkat kerusakan komunitas karang perlu menjadi acuan dalam pengelolaan kawasan terumbu karang di Cagar Alam Laut Krakatau. Kata kunci: kolonisasi, suksesi; komunitas karang; pengelolaan; Krakatau Krakatau Islands diversity is geomorphologically dynamic, and these physical changes influence on organisms including community successional. The purposes of this research were to determine the condition and describe the recent colonization development of coral communities in the Krakatau Islands after sterilization. Transects were done at six stations at two different depth (i.e. 5 and 10 m) using line intercept transect. While observations of coral communities were done with video transect. This study showed that succession or development of coral communities (i.e. colonization) that found in Anak Krakatau indicated earlier stage of colonization. It has different coral communities compared with those that found in Rakata and Panjang island. The diversification of coral communities on both islands, showed that opportunistic and pioneer species (i.e. Pocillopora and Seriatopora) that generally found in Anak Krakatau has been replaced. There are indications of dominance may already take place through competitive exclusion in the coral communities. Three community types were distinguished based on characteristics for each sites, as follows: communities of wave-exposed habitats, communities of semi- exposed to sheltered habitats, and communities of sheltered habitats. The extent of coral damage covered all six sites based on coral damage index (CDI). This suggests that of the all transects were "hot spots'' that required management action. These results indicate that colonization and the level of coral damage have to be taken into account on the manegement of coral ecosystem in the region. Keywords: colonization; succession; coral communities; management; Krakatau

oai:ojs.ejournal.undip.ac.id:article/65063 2024-12-23T10:10:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/65063 2024-12-23T10:10:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 4 (2024): Ilmu Kelautan; 467-480 Mulyani, Sri; Department of Aquaculture, Faculty of Agriculture, Universitas Bosowa Surya, Batara; Department of Urban and Regional Planning, Faculty of Engineering, Universitas Bosowa Rasyidi, Emil Salim; Department of Urban and Regional Planning, Faculty of Engineering, Universitas Bosowa Muhibuddin, Andi; Department of Agrotechnology, Faculty of Agriculture, Universitas Bosowa Mahmud, Haris; Department of Agribusiness, Faculty of Agriculture, Universitas Khairun 2024-12-11 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/65063 Mangrove Expansion; Mangrove Ecosystem; Bio-physicochemical Factors; Water Quality; MaxEnt en The bio-physicochemical conditions of seawater are critically important in the rate of expansion of mangrove forests. This study aims to assess the driving factors of mangrove forest expansion with bio-physicochemical water quality analysis using the Maximum Entropy (MaxEnt) method in Laikang Bay, Indonesia. Water quality analysis included measurements of NO3, PO4, kH, salinity, current speed, brightness (D3), NO2, pH, and chlorophyll-a levels (bio-physicochemical factors). This research adopts quantitative methods, with data collected from 42 specific locations between 12:00 a.m. and 3:00 p.m. The observation data was gathered using the stratified random sampling method. Spatial distribution mapping of mangroves and observation data were analyzed using Euclidean nearest neighbor distance with ArcGIS software version 8.1. The MaxEnt method was applied to investigate the percentage contribution of water quality on the distribution of mangroves. The results of this study indicate that the most significant factor contributing to the growth and expansion of mangrove forests in Laikang Bay is the PO4 content, with a contribution value of 47.4%. The PO4 concentration ranges from 0.10 to 1.40 mg.100g-1, with a concentration of approximately 0.10 mg.100g-1 having the greatest impact. Meanwhile, the less influential factor is brightness (D3), with a contribution value of 0.3%. These results indicate that to maintain the growth and expansion of mangrove forests in Laikang Bay, it is necessary to maintain the levels of these influential variables.

oai:ojs.ejournal.undip.ac.id:article/1840 2017-08-19T22:47:30Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1840 2017-08-19T22:47:30Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 1 (2011): Ilmu Kelautan; 16-23 Suwartimah, Ken; Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro. Kampus Tembalang semarang 50275 Telp./fax. 0247474698 Widianingsih, Widianingsih; Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro. Kampus Tembalang semarang 50275 Telp./fax. 0247474698; e-mail: widia2506@yahoo.com Hartati, Retno; Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro. Kampus Tembalang semarang 50275 Telp./fax. 0247474698 Wulandari, Sri Yulina; Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro. Kampus Tembalang semarang 50275 Telp./fax. 0247474698 2012-02-12 06:11:46 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1840 id Diatom bentik mempunyai peranan penting sebagai produsen primer dalam siklus karbon di rantai makanan estuaria, sebagai sumber makanan yang penting bagi hewan-hewan surface dwellers (merayap di permukaan) dan deposit feeder, juga berperan penting dalam stabilisasi sediment. Penelitian telah dilakukan di Muara Sungai Comal Baru Desa Mojo, Kecamatan Comal, Kabupaten Pemalang pada bulan Jamuari-Maret 2006 dengan tujuan menganalisa komposisi genus dan kelimpahannya. Sampel sedimen diambil menggunakan core sampler dengan ketebalan 1 cm pada enam stasiun berdasarkan jaraknya dengan laut.&nbsp; Hasil penelitian menunjukkan bahwa di Muara Sungai Comal Baru telah ditemukan 20 genus diatom bentik yang termasuk dalam 17 famili dengan ordo Pennales lebih banyak dari pada centrales.&nbsp; Jumlah genus dan kelimpahan total diatom bentik pada bulan Maret lebih tinggi daripada bulan Januari dan Februari karena pengaruh lingkungan antara lain kandungan bahan organik, nutrient&nbsp; dan curah hujan.Kata kunci: Diatom bentik, kelimpahan, komposisi genus, Sungai Comal Baru&nbsp;Benthic Diatom play important role as primer producer in carbon cycle of estuarine food web, as food source for surface dwellers and deposit feeder as well as as sediment stabliziation. The objectives of this present work was to analize genera composition and abundance of benthic diatom. The work had been carried out in mouth of Comal Baru River, Mojo-Comal, Pemalang during January-March 2006. Benthic diatom in 1 cm depth sediment were taken with core sampler in six stations according to the distance from the beach.&nbsp; The results showed that twenty genera od benthic diatom belongs to 17 family were found in mouth in mouth of Comal Baru River, Mojo-Comal in which order of penalles more than cenytrales.&nbsp; The number of genera and their abundance were greater in March than January and February because of environment such a organic matter, nutrient and rainfall. Key words: Benthic Diatom, abundance, genus composition, Comal Baru River

oai:ojs.ejournal.undip.ac.id:article/19353 2019-03-26T05:28:15Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19353 2019-03-26T05:28:15Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 2 (2002): Jurnal Ilmu Kelautan; 103-108 Pramesti, Rini; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Susanto, A. B.; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Kirst, G. O.; Universitat Bremen, FB2-Meeresbotanik, Leobenerstr NW2, 28359 Bremen. Germany Wiencke, C.; AWI Bremerhaven, am Handelshafen 12 D-27570, Bremerhaven 2009-06-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19353 en Karpospora pada Gracilaria sebagai alat reproduksi berpotensi sebagai penyedie bibit. Diantara beberapa faktor lingkungan lainnya, intensitas sinar dan salinitas merupakan faktor yang berpengaruh terhadap pelepasan spora. Penelitian ini bertujuan mengetahui pengaruh intensitas sinar dan salinitas terhadap pelepasan karpospora dari G. gigas. Rancangan Acak Lengkap digunakan dalam penelitian pelepasan karpospora dengan perlakuan intensitas sinar (1000, 1500 dan 2000 lux) dan salinitas (25, 30, dan 35 o/oo). Jumlah terbesar karpospora terlepas dicapai dalam kombinasi intensitas sinar 1500 lux dan salinitas 30. Hal ini berarti bahwa intensitas sinar dan perbedaan salinitas memberikan pengaruh terhadap pelepasan karpospora G. gigas. Karpospora dari Gracilaria mempunyai fungsi penting dalam reproduksi. Terdapat beberapa faktor lingkungan yang menginduksi proses persporaan baik dalam kondisi di laboratorium maupun di alam. Namun begitu perkembangan dari karpospora G. vermiculophylla, species dari daerah 4 musim, telah menunjukkan suatu karakteristik tersendiri selama periode budidaya.Kata kunci: karpospora, G. vermiculophylla, G. gigas, pelepasan   Carpospore as reproduction device of Gracilaria is potential seeds provider. Among several other environmental factors, light intensity, and salinity are suspected influencing the release of the spore. This study is aimed to define this light intensity and salinity effects on liberation of G. gigas. Completely Randomized Design is employed on the carpospore liberation with series light intensity (1000, 1500, 2000 lux) and salinity (25, 30, 35 o/oo). The highest number of carpospore was released in 1500 lux and 30 /oo. This means, the light intensity and different salinity effected the liberation carpospores of G. gigas. Carpospores of Gracilaria have an important function for reproduction. There are some ecotogical factors which could induce sporulation in the field or under laboratory condition. But development of the carpospores of temperate G. vermiculophylla have showed a characteristics during the culture period.Keywords: carpospore, G. vermiculophylla, G. gigas. liberation

oai:ojs.ejournal.undip.ac.id:article/2351 2012-03-03T11:58:53Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2351 2012-03-03T11:58:53Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 3 (2004): Jurnal Ilmu Kelautan; 120-124 Trianto, Agus; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Kelautan-Universitas Diponegoro, Semarang Ambariyanto, Ambariyanto; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Kelautan-Universitas Diponegoro, Semarang Murwani, Retno; Fakultas Peternakan-Universitas Diponegoro, Semarang Pusat Kajian Makanan dan Obat Tradisional, Lembaga Penelitihan, Universitas Diponegoro, Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2351 en Sejarah evolusi yang panjang pada biota laut menyebabkan biota laut mempunyai keanekaragaman molekul yang sangat tinggi. Potensi biota laut tersebut sebagai sumber obat anti kanker menjadi objek penelitianpenting dalam tahun-tahun terakhir. Bahan yang dipergunakan dalam penelitian ini adalah sponge dan gorgonian yang dikoleksi dari perairan Jepara pada kedalaman 1-3 m dan di perairan Labuhan Bajo, Florespada kedalaman 3-38 m. Sampling dilakukan dengan Skin diving dan SCUBA diving. Sampel kemudian diekstrak dengan metanol. Selanjutnya ekstrak diujikan terhadap sel kanker leukemia (L-1210 cell line) dengankonsentrasi 0, 1, 5 dan 10 ppm. Uji dilakukan pada media RPMI lengkap dan penghitungan daya hambat dilakukan dengan metoda direct counting. Ekstrak yang diperoleh dari sponge dan gorgonian berkisar antara 0,55 &ndash; 24,7% dari berat kering atau 0,36-7,34% dari berat basahnya. Seluruh ekstrak dari sampel-sampel mampu menghambat pertumbuhan L1210 cell line dan layak untuk pemurnian lanjut. Ekstrak metanol tiga jenis sponge (Xestospongia sp2 dan Phyllospongia sp1 dan UP8) dan fraksi etil asetat dari ekstrak gorgonian I. hippuris mempunyai IC-50 &lt; 3 mg/mL, ekstrak metanol dari delapan jenis sponge (Agelas nakamurai, Ircina ramosa, A06, Phyllospongia lamellosa , Phyllospongia sp, UP9, Calispongia sp dan Fascaplynopsis sp) mempunyai IC-50 &lt; 5 mg/mL, dan ekstrak metanol dari lima jenis sponge (Hyrtios erecta, Xestospongia sp, Cladocroce sp, Oceanapia cf. Amboiensis dan Haliclona sp.) dan fraksi air dari ekstrak gorgonian I. Hippuris mempunyai IC-50 &lt; 10 mg mL Satu sponge Xestospongia sp 1 mengandung ekstrak yang mempunyai IC - 50 &gt; 10 mg/mL.Kata kunci : Sponge, Gorgonian, L-1210, sel kanker, IC-50The long history of the evolution of marine organisms has made these organisms as a source of high molecular diversity. In search of a new anti cancer drugs, these organisms has become an intense object of research.Sponges and the gorgonian were colllected from Jepara and Labuan Bajo-Flores water on a depth of 1-3 m and 3-38 m repectively by Skin and SCUBA diving. The samples were extracted with methanol. Theextract were assayed against cancer cell (L-1210 cell line) with tested concentration range of 0, 1, 5 and 10 ppm. The cell line was cultured in complete RPMI media and growth inhibition was measured by directcounting. Methanol extract of sponges and gorgonian yielded approximately 0.55 &ndash; 24.7 % dry weight or 0,36 &ndash; 7.34 % wet basis. All methanol extract of the samples could inhibit the growth of L1210 cell line and is potential for further purification. Methanol extract from 3 species of sponges (Xestospongia sp2 dan Phyllospongia sp1 and UP8) and one ethyl acetate fraction of I. hippuris had IC-50 value &lt; 3 mg/mL. Methanol extract of 8 species of sponges (Agelas nakamurai, Ircina ramosa, A06, Phyllospongia lamellosa, Phyllospongia sp, UP9, Calispongia sp dan Fascaplynopsis sp) had IC-50 &lt; 5 mg/mL, methanol extract of 5 species of sponges (Hyrtios erecta, Xestospongia sp, Cladocroce sp, Oceanapia cf. Amboiensis and Haliclona sp.) and one water extract of I. hippuris had IC-50 &lt; 10 mg mL. Methanol extract of one species of sponge (Xestospongia sp 1) had IC-50 &gt; 10 mg/mL.Key words : Sponge, Gorgonian, L-1210, Cancer cell, IC-50

oai:ojs.ejournal.undip.ac.id:article/45631 2022-04-06T18:18:33Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/45631 2022-04-06T18:18:33Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 1 (2004): Jurnal Ilmu Kelautan; 8-13 Santoso, Adi; Department Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/45631 food availabillity; shel growth; sea scallop; Placopecten magellanicus en Abtract

oai:ojs.ejournal.undip.ac.id:article/520 2020-10-25T22:34:48Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/520 2020-10-25T22:34:48Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 1 (2008): Jurnal Ilmu Kelautan; 19-24 Zaenuri, Muhammad Endrawati, Hadi Widianingsih, Widianingsih Irwani, Irwani 2010-11-11 16:34:41 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/520 id Copepoda sebagai konsumer primer, merupakan biomassa yang dapat dikuantifikasi dengan pendekatan&nbsp;morfometri, dengan output volume tubuh copepoda sebagai landasan penghitungan transfer energi. Penelitian&nbsp;ini bertujuan untuk mengetahui produktivitas biomassa copepoda di perairan Demak. Penelitian ini dilaksanakan&nbsp;dari Mei hingga Oktober 2005 pada 6 stasiun di perairan Demak. Sampling dilakukan sebulan sekali dengan&nbsp;menggunakan planktonnet. Sampel copepoda yang diperoleh diklasifikasi berdasarkan ukuran tubuh untuk&nbsp;analisis morfometri sehingga didapatkan biomassa volumetrik. Pengukuran parameter kualitas air (suhu, salinitas,&nbsp;pH, arus, dan kecerahan) dilakukan secara bersamaan dengan sampling copepoda. Hasil pengamatan menunjukkan kelimpahan copepoda total pada 6 stasiun di perairan Demak 741-2094 ind./l. Hasil analisis&nbsp;morfometri ordo Calanoida Genus Acartia sp. berkisar 400-950 &mu;m3; Calanus sp. 400-1900&nbsp;&mu;m3; Eucalanus sp.&nbsp;400-925&nbsp;&mu;rn3; Pseudocalanus sp. 400-1200&nbsp;&mu;m3; Paracalanus sp. 400-1200&nbsp;&mu;m3&nbsp;dan Centmpages sp. 400-1900&nbsp;&mu;m3. Ordo Cyclopoida, Genus Oithona sp. berkisar 450-1100&nbsp;&mu;m3&nbsp;dan Ordo Harpacticoida, Genus&nbsp;Euterpinasp. berkisar 500-1050&nbsp;&mu;m3Kata kunci: Copepoda, Morfometri, Biomassa, Demak

oai:ojs.ejournal.undip.ac.id:article/9615 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9615 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 2 (2015): Ilmu Kelautan; 101-112 Wisha, Ulung Jantama; Peneliti Pada Loka Penelitian Sumber Daya dan Kerentanan Pesisir, Balitbang KP, Kementerian Kelautan dan Perikanan Husrin, Semeidi; Peneliti Pada Loka Penelitian Sumber Daya dan Kerentanan Pesisir, Balitbang KP, Kementerian Kelautan dan Perikanan Prihantono, Joko; Peneliti Pada Pusat Penelitian dan Pengembangan Sumber Daya Laut dan Pesisir, Balitbang KP, Kementerian Kelautan dan Perikanan 2015-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9615 id Perairan Teluk Banten merupakan wilayah yang sibuk dengan aktivitas wisata bahari, industri, permukiman dan lain-lain. Kondisi tersebut dapat menimbulkan dampak-dampak negatif seperti pencemaran, erosi, dan masalah lingkungan lainya. Pemahaman mengenai kondisi hidro-oseanografi sangat penting sebagai langkah untuk pengelolaan dan perlindungan wilayah pesisir dan laut. Tujuan dari penelitian ini untuk mengetahui karakteristik hidrodinamika di Perairan Teluk Banten pada musim peralihan (Agustus - September) berdasarkan data primer (data satu bulan arus, pasang surut, suhu) dan data sekunder (batimetri, kualitas air dan nutrient). Simulasi model diolah menggunakan MIKE 21, didukung dengan penggunaan CD-Oceanography. Hasil pengolahan data menunjukkan bahwa pola arus di Perairan Teluk Banten didominasi arus pasut dengan kecepatan berkisar antara 0-0,41 m.s-1, ditunjukkan oleh hasil pengolahan dalam bentuk stick diagram dan scatter plot yang menunjukkan pergerakan arus cenderung teratur dan arah arus dominan menuju ke arah Tenggara dan Selatan, hal ini juga didukung dengan hasil Current rose dengan menggunakan software WR plot. Kecepatan arus di permukaan lebih besar dan menyebar dibanding kecepatan arus di dekat dasar perairan. Simulasi arus permukaan (nilai error MRSE 12,25 %) menunjukkan bahwa arus bergerak sesuai dengan pengaruh pasang dan surut dengan kecepatan berkisar antara 0-0,42 m.s-1. Simulasi juga memperlihatkan distribusi konsentrasi nutrient dan kualitas perairan dipengaruhi oleh karakteristik hidrodinamika Teluk Banten.

oai:ojs.ejournal.undip.ac.id:article/49706 2025-06-25T07:35:55Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/49706 2025-06-25T07:35:55Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 2 (2025): Ilmu Kelautan; 237-244 Safwan, Safwan; Department of Pharmacy, University of Muhammadiyah Mataram Faculty of Health Science, University of Muhammadiyah Mataram Ridwan, Sucilawaty; Department of Pharmacy, Faculty of Medicine, Universitas Mataram Musyarrafah, Musyarrafah; Department of Biochemistry, Faculty of Medical , Universitas Islam Al-Azhar Wijayanti, Rina; Department of Pharmacy, Faculty of Medical, Sultan Agung Islamic University 2025-06-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/49706 fungi; antimicrobial; antioxidant; marine; seagrass; Halodule sp. en Secondary metabolites from marine microorganisms, including marine-derived fungi, have consented to developing guide bioactive compounds. Marine-derived fungi were reported to be associated with various habitats, including seagrasses. The seagrass-associated fungus from the Indonesian marine area is still poorly unexplored. This study was presented to screen for the antimicrobial and antioxidant activity of crude extracts produced by fungi associated with Seagrass (Halodule sp.) collected from Indonesia. Fresh samples were collected and kept fresh until they arrived in the Laboratory and immediately planted on Potato Dextrose Agar (PDA) Sea Salt media. Ten fungi were isolated and purified using a Malt Extract Agar (MEA) medium and subjected to fermentation treatment for 30 days using solid rice media. The compounds produced were collected by soaking directly using ethyl acetate (EA) for one hour while stirring mechanically. Evaporation of EA was carried out to obtain crude extracts. Each crude extract was subjected to antibacterial and antioxidant activities using the agar diffusion and DPPH methods, respectively. Reverse-phase Thin-Layer Chromatography (TLC) was used to observe the compound profile. The results of the activity test showed that two crude extracts from fungi with the code A.10.4 and B.5.1 had both activities, antibacterial (potent inhibition at 50% concentration and antioxidant (IC50 of 90.23 and 88.29 ppm, respectively). Another crude extract with the fungi code B.1.1 showed strong antioxidant activity (IC50 of 81.31 ppm) without antimicrobial activity. TLC results show different compound profiles from each crude extract and quite a good separation.

oai:ojs.ejournal.undip.ac.id:article/2224 2012-02-27T12:13:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2224 2012-02-27T12:13:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 2 (2006): Jurnal Ilmu Kelautan; 59-66 Ghofar, Abdul; Faculty of Fisheries and Marine Science, Diponegoro University Kampus FPK UNDIP Tembalang, Semarang, Indonesia e-mail: aaghofar@indosat.net.id Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2224 en Dari tujuh jenis cephalopoda yang terdapat di Selat Sape, setiap tahunnya empat jenis cumi-cumi mendominasi (90%) tangkapan cephalopoda. Perikanan cumi-cumi dideskripsikan, terutama berkaitan dengan terjadinya fluktuasi tangkapan yang besar karena efek-ganda dari kegiatan penangkapan dan variabilitas iklim. Dua jenis alat tangkap utama, Bagan-Prahu dan Jala-Oras distandarisasi sebelum dipakai dalam analisis tangkapan-upaya penangkapan, sedangkan variabilitas iklim diwakili dengan indeks osilasi selatan (SOI). Suatu model dikonstruksidengan cara menginkorporasikan nilai rata-rata tahunan SOI, upaya penangkapan dan tangkapan cumi-cumi. Model ini dapat dipergunakan dalam memperkirakan tangkapan cumi-cumi. Penggunaannya untuk memprediksi dan mengelola perikanan cumi-cumi memerlukan dilakukannya secara teratur (bulanan) monitoring tangkapan, tingkat upaya penangkapan dan SOI. Implikasi hasil kajian ini untuk riset dan pengelolaan dibahas dalam tulisan ini.Kata kunci: cephalopoda, cumi-cumi, variabilitas iklim, ENSO, indeks osilasi selatanOf seven cephalopod species occurring in the Sape Strait, four species of squid constitute 90% of the annual cephalopod catches. The squid fishery is described, with emphasis on its fluctuating catches due to thecombined effects of fishing and climate variability. Two most important fishing gears, &lsquo;Bagan Prahu&rsquo; (boat raft net) and &lsquo;Jala Oras&rsquo; (light lured payang) were used and standardized in catch and fishing effort analysis. The southern oscillation index (SOI) was used to represent the climate variability component. A model was then developed by means of incorporating the SOI, fishing effort and squid catch. Average annual values of these three components were used to construct the model. The model can be a useful tool for predicting the squid catches. Its use for forecasting and managing the fishery requires regular monitoring the catch, fishing effort and the SOI, preferably monthly. Research and management implication of this finding is discussed.Key words: cephalopod, squid, climate variability, ENSO, southern oscillation index

oai:ojs.ejournal.undip.ac.id:article/18164 2021-10-13T03:32:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/18164 2021-10-13T03:32:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 1 (2019): Ilmu Kelautan; 23-30 Lestari, Lestari; Reseach Center for Oceanography, Indonesian Institute of Sciences Budiyanto, Fitri; Reseach Center for Oceanography, Indonesian Institute of Sciences 2019-02-28 21:06:21 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/18164 metal speciation; sediments; Muara Angke; Jakarta Bay en The assessment of the biological availability of metals is rarely used only by knowing the total concentration of the metal. Therefore, six sediment samples from Muara Angke, Teluk Jakarta were assessed the chemical speciation of heavy metals. This study aims to determine metal speciation using the BCR sequential extraction procedure and to determine metal speciation to evaluate bioavailability in the sediments of Muara Angke, Jakarta Bay. In sediment from Muara Angke, the ability to move sequence of heavy metals studied was Pb&gt;Zn&gt;Cu&gt;Ni. The mostly accumulated in the non-residual fraction of the total concentrations are Cu, Ni, Pb and Zn which indicated that the mobility and anthropogenic inputs of these metals in Muara Angke were quite high. The Risk Assessment Code (RAC) reveal that Zn and Ni at almost station exist in exchangeable and a fraction of carbonate-bound and therefore high-risk category. Most of the Cu at most of the station is in the oxidizable fraction, except a small portion found at all station is in the exchangeable fraction and fraction of carbonate-bound thus posing a low risk for the waters environment. The patterns of Pb speciation show no to low risk to the waters environment. However, metal observations in the waters are necessary because they are persistent and can accumulate which threatening the water environment.

oai:ojs.ejournal.undip.ac.id:article/2418 2020-04-17T05:55:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2418 2020-04-17T05:55:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 1 (2012): Ilmu Kelautan; 49-58 Wardianto, Yusli; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University (IPB), Kampus IPB Dramaga, Bogor 16680, Indonesia Santoso, Joko; Department of Aquatic Products Technology, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University (IPB), Kampus IPB Dramaga, Bogor 16680, Indonesia Mashar, Ali; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University (IPB), Kampus IPB Dramaga, Bogor 16680, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2418 en Udang mantis jenis Harpiosquilla raphidea merupakan salah satu jenis krustase hasil tangkapan&nbsp; bernilai ekonomi pada beberapa daerah pesisir di Indonesia. Namun komposisi biokimia jenis ini belum banyak diketahui. Oleh karena itu, tujuan penelitian ini adalah untuk memepelajari secara kuantitatif unsure-unsur penting yang terkandung dalam daging udang mantis yang berasal dari perairan Kuala Tungkal, Jambi dan Cirebon. Hasil penelitian memperlihatkan bahwa rendemen udang mantis dari kedua lokasi tidak berbeda nyata. Selain itu, udang dari kedua lokasi juga tidak memperlihatkan kandungan mikro mineral (seng, besi dan tembaga) yang berbeda. Namun demikian, udang mantis Kuala Tungkal, Jambi memiliki kandungan natrium, kalium dan kalsium lebih tinggi dibandingkan udang mantis Cirebon. Tetapi, udang mantis Cirebon kandungan magnesiumnya lebih baik. Pemasakan dengan media asam dan dengan proses perebusan akan menghasilkan tingkat kelarutan mineral tertinggi. Kata kunci: Udang mantis, Harpiosquilla raphidea, komposisi biokimia, kelarutan mineralThe mantis shrimp, Harpiosquilla raphidea, is a valued crustacean species captured mainly in some Indonesian coastal waters. Yet, the biochemical composition of this species is still inadequately understood. For that reason, the aim of this study was to quantify the content of essential elements of specimens from the Kuala Tungkal, Jambi and Cirebon Coast. The meat yield of the shrimps collected from the two locations are not significantly different. In terms of proximate chemical composition, all chemical characters of the shrimps from Kuala Tungkal, Jambi and Cirebon are not significantly different, except the fat content. As far as the mineral composition is concerned, no differences were observed between either two locations for micro minerals (zinc, iron and copper). However, the shrimps of Kuala Tungkal, Jambi coast showed higher sodium, potassium and calcium contents than those of Cirebon coast. Yet, for magnesium the shrimp of Cirebon had higher content in comparison with that of Kuala Tungkal, Jambi. Media acid with boiling process would bring about the highest solubility of minerals. Key words: Mantis shrimp, Harpiosquilla raphidea, biochemical composition, mineral solubility

oai:ojs.ejournal.undip.ac.id:article/50001 2026-04-24T01:10:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/50001 2026-04-24T01:10:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 1 (2023): Ilmu Kelautan; 37-48 Ahmmed, Shawon; Bangladesh Fisheries Research Institute, Brackishwater Station Washim, Mizanur Rahman; Bangladesh Fisheries Research Institute, Brackishwater Station Rubel, AKM Shafiqul Alam; Bangladesh Fisheries Research Institute, Brackishwater Station Mondal, Debashis Kumar; Bangladesh Fisheries Research Institute, Brackishwater Station Sakib, Md. Hashmi; Bangladesh Fisheries Research Institute, Brackishwater Station Mahmud, Yahia; Bangladesh Fisheries Research Institute Islam, Md. Latiful; Bangladesh Fisheries Research Institute, Brackishwater Station 2023-03-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/50001 induce breeding; breeding performance; latency period; spawning; fertilization; en Reproduction of Pomadasys hasta was studied in captivity to establish an induced breeding protocol and larvae rearing tactics. Three distinct hormones viz., human chorionic gonadotropin (HCG), luteinizing hormone-releasing hormone analogues (LHRHa) and salmon gonadotropin hormone-releasing hormone (S-GnRHa) were injected to matured brooders in treatment 1 (T1), treatment 2 (T2) and treatment 3 (T3) but only 0.9% NaCl used in T4 as a control. In each treatment, three experimental trails, E1 (♀40:♂20 µg.kg-1), E2 (♀50:♂25 µg.kg-1) and E3 (♀60:♂30 µg.kg-1) were conducted along with three replications of each trail in order to optimize the hormone dose for the target species. The obtained results have aroused much attention as this is the first breakthrough on induced breeding of a grunter in the Indian subcontinent. Variation in fertilization rate, latency period, egg output and hatching rate in response to different treatments and trails were revealed here. Spawning was occurred between 33-48 h of injection in all the experiments at 17-25°C water temperature. Above all, the highest fertilization (95.45±2.34) and hatching (75.45±4.07) rates were observed in E2 of T2. After 22-26 h of fertilization, the larvae emerged from the egg membrane and the newly hatched larvae were 1.6-1.8 mm in length. Turning larvae into juveniles was noticed by 40–45 days post-hatch (dph) with scales on the entire body surface. The total length was recorded as 43.5±2.1 mm and average body weight as 0.7±0.2 g at 95 dph. This investigation unlocked a track for producing seed of P. hasta in a commercial hatchery for a sustainable aquaculture without hampering their wild stock.

oai:ojs.ejournal.undip.ac.id:article/583 2012-02-27T23:57:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/583 2012-02-27T23:57:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 1 (2007): Jurnal Ilmu Kelautan; 1-5 Rejeki, Sri; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Hp. 08122502918 2010-11-22 05:46:53 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/583 id Tingkat kelulushidupan juwana kuda laut sangat dipengaruhi oleh kesesuaian pakan. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian Copepoda tunggal dan kombinasinya sebagai pakan alami terhadap kelulusan hidupan kuda laut (Hippocampus kuda). Juwana kuda lautyang berumur 1 hari (Dl) dengan padat penebaran 10 ekor/liter dipelihara dengan pemberian pakan copepoda yang berbeda. Percobaan dilakukan dengan Rancangan acak lengkap dengan 8 perlakuan yaitu A. Copepoda mix (campuran berbagai jenis copepoda); B. Acartia sp., C. Oithona sp., D. Tigriopus sp., E. Kombinasi Acartia sp. dan Oithona sp. (1:i); F. Kombinasi Acartia sp. dan Tigriopus sp (1:1); G. Kombinasi Oithona sp. dan Tigriopus sp. (1:1), H. Kombinasi Acartia sp., Oithona sp., dan Tigriopus sp. (1:2:1) masing-masing dengan 3 ulangan. Hasil penelitian menunjukkan bahwa perbedaan jenis copepoda memberikan pengaruh yang nyata (P&lt;0,05) terhadap tingkat kelulushidupan juwana kuda laut. Kelulushidupan tertinggi ditunjukkan oleh juwana yang diberi pakan copepoda kombinasi (1:1) Acartia sp. dan Oithona sp. (AB) yaitu (55&plusmn; 13,29)% sedang tingkat kelulushidupan terendah ditunjukkan pada pemberian pakan copepoda jenis Acartia sp. (A) yaitu (15&plusmn;8,66)%.&nbsp;Kata kuncl : kuda laut,&nbsp;Hippocampus kuda, copepoda.The survival of seahorse juvenile is affected not only by water quality but also by suitable feed organism. The research is aimed to determnine the impact of giving copepod as natural food organisms on the survival rateof juvenile seahorse (Hippocampus kuda). Testing animals are juvenile seahorse (Hippocampus kuda) age of one day (D1) with stocking density of 10 indv./liter. Completely Randomised Design was applied with 8treatments and each was triplicated. The treatment of 4 individu/mL are A. Copepod mix (mixed species); B. Acartia sp., C. Oithona sp., D. Tigriopus sp., E. Mixed of Acartia sp. and Oithona sp. ratio of 1:1; F. Mixed of Acartia sp. and Tigriopus sp. ratio of 1:1; G. Mixed of Oithona sp. dan Tigriopus sp. ratio of 1:1, H. Mixed of Acartia sp., Oithona sp., and Tigriopus sp. ratio of 1:2:1. The result of experiment showed thatdifferent species copepods have significantly effect on survival of juvenile seahorse (P&lt;0,05). The highest survival were showed by juvenile seahores given mixed of copepods Acartia sp. and Oithona sp. (AB) i.e.(55&plusmn;13,29)%. While Acartia sp. (A) gives the lowest survival rate (15&plusmn;8,66%).Key words: seahorse juvenile, Hippocampus kuda, feed, copepods

oai:ojs.ejournal.undip.ac.id:article/10156 2020-04-17T06:03:35Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/10156 2020-04-17T06:03:35Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 3 (2016): Ilmu Kelautan; 107-116 Darus, Robba Fahrisy; Marine Science Departement of Marine Science and Technology Faculty of Fisheries and Marine Science Bogor Agricultural University Zamani, Neviaty Putri; Departement of Marine Science and Technology Faculty of Fisheries and Marine Science Bogor Agricultural University Suharsono, Suharsono; Research Center for Oceanography (P2O) Indonesian Institute of Sciences (LIPI) Solihin, Dedy Duryadi; Departement of Biology Faculty of Mathematics and Natural Science Bogor Agricultural University 2016-08-27 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/10156 Dirjen Pendidikan Tinggi (DIKTI) for providing the research grants through Beasiswa Pendidikan Pascasarjana Dalam Negeri (BPPDN) Year 2013; Dr. Agus Budianto, Research Center for Oceanography (P2O) Indonesian Institute of Sciences (LIPI) en Acanthophyllia deshayesiana has a different habitat with Cynarina lacrymalis in the nature, but they have same character on living forms, diameter, and height of corallite. Both of these species are considered synonym, thus it needs verification study to describe whether it is synonym species or not based on morphological data. Eleven descriptive characters and seven morphometric characters were used to verify the synonym species of these coral. Descriptive data were performed by scoring method, while morphometric data were obtained from morphometric. Morphometric data were analyzed by Correspondence Analysis of Principal Coordinates (CAP) and Agglomerative Hierarchical Cluster (AHC), while descriptive data were analyzed by UPGMA (Unweight Pair Group Method with Arithmetic Mean). The result showed that both of these coral cannot differentiate based on morphometric measurement. It can differentiate significantly based on descriptive characters, so both of these coral are not synonym. Keywords: synonym, morphometric, descriptive, Cynarina lacrymalis, Acanthophyllia deshayesiana

oai:ojs.ejournal.undip.ac.id:article/71414 2026-02-27T19:11:44Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/71414 2026-02-27T19:11:44Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 1 (2026): Ilmu Kelautan; 15-25 Julianinda, Yanida Azhari; Master of Aquaculture, Faculty of Fisheries and Marine Science, Universitas Brawijaya Faculty of Fisheries and Marine Science, Universitas Brawijaya Iranawati, Feni; Faculty of Fisheries and Marine Science, Universitas Brawijaya Marine Resources Exploration and Management Research Group Yona, Defri; Faculty of Fisheries and Marine Science, Universitas Brawijaya Marine Resources Exploration and Management Research Group Khaidar, Zulfan; Faculty of Fisheries and Marine Science, Universitas Brawijaya Sartimbul, Aida; Faculty of Fisheries and Marine Science, Universitas Brawijaya Marine Resources Exploration and Management Research Group 2026-03-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/71414 Fish composition; Climate change; SST; Chlorophyll-a; IOD; South Prigi Waters en The variability of Sea Surface Temperature (SST) and chlorophyll-a distribution in the southern waters of East Java is heavily influenced by the Indian Ocean Dipole (IOD) phenomenon. This study examines oceanographic parameter variability, their relationship with the IOD from 2003 to 2014, and fishing dynamics in the southern waters of East Java, particularly at PPN Prigi. Data utilized include SST and chlorophyll-a from Aqua-MODIS satellites, the Dipole Mode Index (DMI), and 12 years of fish production records. The analysis reveals significant fluctuations in SST and chlorophyll-a, with a strong inverse relationship (correlation: –0.677), where chlorophyll-a concentrations rise as SST decreases. Positive IOD events reduce SST, while negative IOD events increase SST, with correlations of –0.591 for SST and IOD and 0.601 for chlorophyll-a and IOD. During the positive IOD events of 2006–2008, SST decreased, leading to increased fish production. Conversely, the negative IOD in 2010 raised SST, contributing to a decline in fish stocks. Over the 12-year period, a notable increase in Bali Sardinella and skipjack production was observed, despite a sharp decrease in 2010 caused by higher SST levels. This study highlights the importance of understanding the interactions between SST, chlorophyll-a, and IOD in developing sustainable fisheries management strategies. These insights can support efforts to optimize fish resource utilization, mitigate the impacts of climate variability, and ensure long-term fisheries productivity in the southern waters of East Java, particularly for strengthening adaptive resource planning within climate-sensitive pelagic ecosystems and supporting informed decision-making for regional fisheries policies and sustainable blue-growth initiatives.

oai:ojs.ejournal.undip.ac.id:article/2264 2012-02-28T21:37:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2264 2012-02-28T21:37:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 4 (2005): Jurnal Ilmu Kelautan; 229-236 Pigawati, Bitta; Jurusan Perencanaan Wilayah dan Kota, Fakultas Teknik Universitas Diponegoro, Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2264 en Potensi sumber daya pesisir dan laut di Indonesia begitu beragam baik dari segi kuantitas maupun kualitas, seharusnya dapat memberikan kontribusi yang besar terhadap pertumbuhan ekonomi Negara Indonesia.Kabupaten Natuna Provinsi Kepulauan Riau merupakan salah satu wilayah yang memiliki potensi sumberdaya pesisir dan laut yang sangat potensial untuk dikembangkan. Untuk mengoptimalkan upaya pengembangan /eksploitasi sumberdaya pesisir tersebut, perlu dilakukan kegiatan inventarisasi, yang berguna untuk mengetahui jenis, letak dan nilai ekonomis sumberdaya serta untuk mengetahui kesesuaian ekologis setempat terhadap upaya eksploitasi. Inventarisasi sumberdaya pesisir dan pantai diharapkan dapat memberikan sejumlah informasidasar yang berguna untuk proses penataan dan pengelolaan kawasan pantai dan pasisir sebagai bagian dari Pengelolaan Kawasan Pantai Secara Terpadu (Integrated Coastal Zone Management/ICZM). Penelitian ini bertujuan mengidentifikasi potensi sumberdaya pesisir dan pulau-pulau kecil serta memetakan sebaran potensi pasir laut dengan metode GIS dan Penginderaan Jauh. Hasil penelitian menunjukkan bahwa Kecamatan Bunguran&nbsp; Barat merupakan kawasan potensial untuk sumberdaya karang, khlorophil_a dan sedimen/pasir laut sedangkanpotensi padang lamun dan mangrove berada pada Kecamatan Bunguran Timur. Kegiatan identifikasi sumberdaya pesisir dan pulau-pulau kecil dapat memberi masukan dalam membuat arahan kawasan yang boleh di eksploitasi dengan mempertimbangkan keberadaan kawasan konservasi.Kata kunci: identifikasi, sumberdaya pesisir dan lautThere are many kind of potential coastal- marine resources in Indonesia and it is important to contribute to the Indonesia economic growth. One of these regions is Natuna Regency of Riau Islands Province which hasvarious resources potential to be developed. In order to optimized the exploitation and development of coastal-marine resources, it is necessary to inventory these resources. Identification of the coastal-marineresources are based on a kind, site, economic value and local ecological environment. This information is very useful to manage the coastal area as a part of Integrated Coastal Zone Management. This research aimsto identity the potency coastal-marine resources and mapping sediment / coastal sand. The method is Geo Information System (GIS) and remote sensing. The result of the research indicate that the sub district ofBunguran West represent the potential area for coral, chlorophyl_a and sediment coastal sand. The sub district Bunguran East represent the potential area of mangrove. The Indonesian Government should givedirection to allocated which suitable area to be exploited based on the rules conservation areaKey words : identification, coastal-marine resources

oai:ojs.ejournal.undip.ac.id:article/27756 2021-10-13T01:01:00Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/27756 2021-10-13T01:01:00Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 2 (2020): Ilmu Kelautan; 57-65 Asmara, Anjar Purba; Universitas Islam Negeri Ar-Raniry Banda Aceh Sedyadi, Endaruji; Universitas Islam Negeri Sunan Kalijaga Yogyakarta Zette, Ilma Fistannisa; University of Technology Sydney 2020-05-27 21:49:13 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/27756 proximate; brown seaweed; liquid fertilizer; micro and macronutrients en Sargassum is known to have potential ingredients, such as essential nutrients and minerals, which are important for agroindustry and the environment. This study aims to determine the proximate properties of Sargassum polycystum C.A. Agardh from Lange beach and the optimum extraction period arising the liquid product. The dried seaweed was extracted using 0.1% KOH at a constant temperature of 80°C for 120–600 mins. Furthermore, nutrients content, pH, electrical conductivity (EC) and total dissolved solids (TDS) of the afforded filtrate were quantified. As a result, the moisture, ash, fibre, carbohydrate, protein, and fat content were 7.16, 13.057, 20.33, 51.77, 6.12, and 1.57%, respectively. The value of pH, EC, and TDS ranged around 4.69–7.27, 0.013–0.078 dS.m-1, and 6.24–39.75 mg.L-1, respectively. The level of N, P, K, and organic C, were estimated around 0.30–0.81, 0.16–0.28, 0.15–0.20, and 0.32–0.80%, respectively. Meanwhile, the content of Na, Mg, Ca, Fe, Mn, and Zn were observed from 112.04–212.61, 24.60–33.57, 146.59–280.92, 416.22–630.69, 18.25–27.73, and 19.86–26.53 ppm, respectively. In conclusion, extraction for 120 mins seems to be preferable, as the observed parameters were above the minimum range.

oai:ojs.ejournal.undip.ac.id:article/7066 2017-08-19T22:44:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7066 2017-08-19T22:44:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 2 (2013): Ilmu Kelautan; 97-104 Purwandana, Adi; Pusat Penelitian Oseanografi, Lembaga Ilmu Pengetahuan Indonesia, Jl. Pasir Putih I Ancol Timur, Jakarta Utara, Indonesia Purwongko, Fis; Fakultas Perikanan dan Ilmu Kelautan, Institut pertanian Bogor (IPB), Kampus Kampus IPB Darmaga, Bogor, Indonesia. 16680 2013-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7066 en Sound Scattering Layer merupakan lapisan sejumlah organisme yang memantulkan sinyal hidroakustik. Pengetahun mengenai hal ini penting untuk memahami fungsi ekosistem epipelagis. Penelitian ini bertujuan untuk mendapatkan kuantitas akustik guna memperoleh karakteristik kawasan perairan kepulauan Lamalera. Pengukuran hidroakustik dilakukan pada bulan Juli 2011, yang bertepatan dengan musim timur. Penelitian dilakukan menggunakan peralatan split beam echosounder EK500 dioperasikan pada frekuensi 38 kHz dan 120 kHz. yang terdapat pada kapal Pusat Penelitian Oseanografi Lembaga Ilmu Pengetahuan Indonesia. Data parameter fisik lingkungan diperoleh dengan CTD Seabird Electronics (SBE) 911 Plus. Sedangkan kelimpahan klorofil-a diukur dengan Fluorometer Mk III Aquatracka. Verifikasi data kelimpahan akustik dengan data kelimpahan klorofil-a dari CTD menujukkan adanya korelasi positif antara profil klorofil-a dengan densitas akustik. Identifikasi lapisan krill pada perairan selatan kepulauan Lamalera memiliki rentang nilai kuat pantul individu antara -70 hingga -58 dB pada frekuensi 120 kHz. Hasil ini menunjukkan bahwa kelimpahan akustik pada perairan selatan lebih tinggi dibandingkan pada perairan utara kepulauan Lamalera. Kata kunci: akustik perikanan, perairan lamalera, musim timur. Sound Scattering Layer is a layer of a number of organisms that reflects hidroacustic signals. Knowledge on this subject is important to understand the functioning of epipelagic ecosystems. The aim of the study is to determine abundance of biologically active layers within the waters. Hydroacoustics measurement with 38 and 120 kHz, splitbeam EK500 echosounder vessel operated at a frequency of 38 kHz and 120 kHz mounted at Baruna Jaya VIII research vessel were made in July, 2011 at Lamalera Islands waters. Data environmental physical parameters were obtained with CTD Seabird Electronics (SBE) 911 Plus. While the abundance of chlorophyll-a were measured with a Mk III Fluorometer Aquatracka. Verification of acoustics abundance with chlorophll-a derived from fluorometer (CTD) shows positive signal of correlation. Identification of presummed krill layer within southern Lamalera waters shows range of target strength -70 to -58 dB at 120 kHz. It suggests that sound scattering layer which is represents biologically acoustics abundance was found to be higher in the southern waters than in the northern part of Lamalera. Keywords: fisheries acoustics, lamalera waters, southeast monsoon

oai:ojs.ejournal.undip.ac.id:article/9420 2017-10-27T08:50:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/9420 2017-10-27T08:50:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 4 (2016): Ilmu Kelautan; 197-202 Wittriansyah, Khoeruddin; Diponegoro University Trianto, Agus; Marine Science Department, Faculty of Fisheries and Marine Science, Diponegoro University, Semarang Jl. Prof. Soedarto, Tembalang, Semarang, Jawa Tengah 50275, Indonesia Widyaningsih, Sekar Radjasa, Ocky Karna Pribadi, Rudhi 2016-12-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/9420 SIMLITABMAS-DIKTI en Marine sponge-associated fungi are the sources of bioactive compounds with various pharmacologicals potency. This study aimed to isolate the sponge-associated fungi as the producer of the MDR anti-bacterial compounds.  The associated fungi were isolated from the sponges collected from Riung water, Nusa Tenggara Timur. Five of the best isolates were cultured on MEA to obtain the methanolic extract for further studies.  The antagonistic test was conducted using overlay method towards the MDR Staphylococcus aureus and Escherichia coli. A total of 33 fungi were isolated from 19 sponge specimens. The antagonistic test showed that 19 isolates were active against both S. aureus and E. coli, and 13 of them were merely active against one of the bacteria. However, only five isolates have strong activity against one or both of the bacteria.  The KN-15-3 had the strongest activity against S. aureus (18.75±0.777mm) and E. coli (15.10±0.141mm) at the concentration of 400 μg.disc-1 so it can be developed further as a source of drug candicate.  Keywords: Fungi symbiont, Sponges, MDR Antibacterial, Staphylococcus aureus,  Escherichia coli.

oai:ojs.ejournal.undip.ac.id:article/2294 2012-03-01T08:43:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2294 2012-03-01T08:43:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 2 (2005): Jurnal Ilmu Kelautan; 72-77 Sanusi, H S; Departemen Ilmu dan Teknologi Kelautan, Fakultas Perikanan dan Ilmu Kelautan. Institut Pertanian Bogor Fitriati, M; Balai Pengembangan dan Pengujian mutu Hasil Perikanan Direktorat Jenderal Perikanan Tangkap, Departemen Kelautan dan Perikanan. Jakarta Haerudin, Haerudin; Program Studi Manajemen Sumberdaya Perairan, Jurusan Perikanan, Fakultas Perikanan dan Imu Kelautan, Universitas Diponegoro, Semarang Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2294 en PenPelitian mengenai kapasitas adsorpsi Hg, Pb dan Cd terlarut oleh padatan tersuspensi (Suspended Solid &ndash; SS) dilakukan di dua lokasi budidaya kerang hijau, Kamal Muara dan Cilincing, Teluk Jakarta. Konsentrasi Hg, Pb dan Cd dalam contoh air dianalisis dengan AAS (Atomic Absorption Spectrophotometer). Hasil penelitian menunjukkan bahwa besarnya kapasitas adsorpsi SS terhadap logam berat secara berurut adalah Hg&gt;Pb&gt;Cd. Perhitungan terhadap nilai indeks Transpor Elemen Terlarut (Dissolved Transport Indice &ndash; DTI ) diperoleh keterangan bahwa konsentrasi Cd terlarut adalah yang terbesar (99.97 &ndash; 99.98%) disusul oleh Pb (97.53 &ndash; 98.68%) dan terakhir Hg (92.86 &ndash; 93.81%). Besarnya kapasitas adsorpsi SS terhadap Hg, Pb, dan Cd ditentukanterutama oleh faktor salinitas selain komposisi serta karakteristik mineral liat penyusunan padatan tersuspensi. Kisaran salinitas estuari 9 &ndash; 10.20 ppt memberikan kisaran rerata kapasitas adsorpsi yang relatif rendah yaitu Hg 6.33 &ndash; 7.49%, Pb 1.45 &ndash; 2.19%, dan Cd 0.01%.Kata kunci: Padatan tersuspensi, elemen terlarut, kapasitas adsorpsi, Indeks Transpor Elemen Terlarut ( DTI ), mineral liat.Study on adsorption capacity of dissolved Hg, Pb, and Cd by suspended solid was carried on at two greenmussel culture location Kamal Muara and Cilincing Jakarta Bay. Concentration of Hg, Pb, and Cd of watersamples were analyzed by Atomic Absorption Spectrophotometer (AAS). Result of the study showed that adsorption capacity of suspended matter were in order Hg&gt;Pb&gt;Cd. Calculation of DTI values indicated that concentration of dissolved Cd (99.97 &ndash; 99.98%) was the highest and consecutively follows by Pb ( 97.53 &ndash; 98.68% ) and the latest was Hg ( 92.86 &ndash; 93.81%). Value of adsorption capacity of Hg, Pb and Cd are mainly determined by factors of salinity, beside composition and physicochemical characteristics of clay mineral of suspended matter. Range of salinity 9 &ndash; 10.20%o gave relatively lolow average adsorption capacity of Hg 6.33 &ndash; 7.49%, Pb 1.45 &ndash; 2.19%, and Cd 0.01%.Key words: suspended solid, dissolved element, adsorption capacity, Dissolved Transport Indice (DTI),&nbsp; clay mineral

oai:ojs.ejournal.undip.ac.id:article/57129 2024-03-31T21:48:11Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/57129 2024-03-31T21:48:11Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 1 (2024): Ilmu Kelautan; 37-47 Runtuboi, Ferawati; Department of Marine Science, Faculty of Fisheries and Marine Sciences, University of Papua Marine Science Doctoral Program, Marine Science and Technology Department, Faculty of Fisheries and Marine Sciences, IPB University Bengen, Dietriech Geoffrey; Marine Science Doctoral Program, Marine Science and Technology Department, Faculty of Fisheries and Marine Sciences, IPB University Faculty of Fisheries and Marine Sciences, IPB University Nurjaya, I Wayan; Marine Science Doctoral Program, Marine Science and Technology Department, Faculty of Fisheries and Marine Sciences, IPB University Faculty of Fisheries and Marine Sciences, IPB University Natih, Nyoman Metta N; Marine Science Doctoral Program, Marine Science and Technology Department, Faculty of Fisheries and Marine Sciences, IPB University Faculty of Fisheries and Marine Sciences, IPB University Zulfikar, Andi; Faculty of Fisheries and Marine Sciences, Raja Ali Haji University Beale, Calvin S.; The Manta Trust 2024-03-27 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/57129 Environment; GAMs; Hotspots; Parameters; Zooplankton en Understanding the influence and impact of environmental factors on manta ray sightings is critical to understanding the spatial and temporal ecology of a highly mobile species. Therefore, this study aims to determine the influence and impact of environmental factors as indicated by the parameters of wind speed, chlorophyll-a, SST, salinity, pH, dissolved oxygen, and the number of phytoplankton and zooplankton species. The mapped chlorophyll-a was re-analyzed based on the seasonal period throughout 2021 downloaded from marine copernicus and analyzed by kriging method. The influence and effects of environmental parameters on the short-term appearance of eye rays were studied using an adaptive model (GAM). The analysis showed a significant influence of environmental factors on manta ray sightings in Raja Ampat, namely Calanoid spp, Oithona nana, Acartia clausi, Calanus helgoladicus, and Oithona brevicornis. Based on this model, zooplankton is an important parameter that can describe the influence of environmental parameters on manta ray sightings at observation points in Raja Ampat MPA. The results of the reanalysis of chlorophyll-a concentrations were highest in the eastern to transitional seasons, which were scattered on the west side of Raja Ampat waters. Meanwhile, chlorophyll-a concentrations were low in the west to transitional season on the east side. This mechanism may drive the foraging strategy of manta rays, which visit shallow waters where zooplankton density and biomass are abundant. Adopting the BHS MPA network concept, as it has been implemented, would be in line with broader conservation expectations for the sustainability of manta rays in Raja Ampat.

oai:ojs.ejournal.undip.ac.id:article/7168 2017-08-19T22:43:37Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7168 2017-08-19T22:43:37Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 4 (2013): Ilmu Kelautan; 231-238 Taslihan, Arief; Main Center for Brackishwater Aquaculture Development, Jl. Pemandian Kartini PO BOX No.1 Jepara, Indonesia. 59401 Sumiarto, Bambang; Faculty of Veterinary Medicine, University of Gadjah Mada, Jl. Fauna 2 Karangmalang, Yogyakarta, Indonesia. 55281 Nitimulyo, Kamiso H; Faculty of Agriculture, University of Gadjah Mada, Jl Flora, Bulaksumur, Yogyakarta, Indonesia. 55281 2013-12-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7168 en Telah dilakukan kajian terhadap efektifitas managemen model klaster dengan tambak non-udang sebagai tambak penyanggah untuk mencegah transmisi penyakit bercak putih viral (WSSV) pada budidaya udang windu skala tradisional. Kajian dilakukan di tambak udang tradisional di wilayah kabupaten Demak, provinsi Jawa Tengah. Penelitian dilakukan pada lima petak tambak perlakuan dan tujuh petak tambak sebagai kontrol. Tambak udang pada kelompok perlakuan menerapkan sistem klaster, yaitu tambak dikelilingi dengan petak berisi ikan sebagai komponen biosekuriti untuk mencegah penularan WSSV dari tambak sekitarnya. Tambak kontrol tidak menggunakan petak non-udang sebagai komponen biosekuriti, dan dikelola dengan teknologi yang biasa dilakukan oleh pembudidaya setempat. Hasil penelitian menunjukkan bahwa tambak yang dikelilingi dengan tambak non-udang dapat dipanen dalam waktu pemeliharaan 105,6±4,5 hari lebih lama secara nyata dibanding tambak kontrol yang dipanen pada hari ke 60,9±16,0 karena wabah penyakit, sintasan (survival rate) yang diperoleh adalah 77,6±3,6 %, lebih besar secara nyata dibandingkan kontrol yang hanya 22,6±15,8 %, serta produksi udang 425,1±146,6 kg.ha-1 jauh lebih tinggi dibandingkan kontrol yang hanya 54,5±47,6 kg.ha-1. Pada kajian tersebut tambak non-udang ditebari dengan tilapia dan kakap. Hasil penelitian menunjukkan bahwa melalui penerapan Better Management Practices (BMP) dengan cara tambak udang dalam model klaster yang dikelilingi dengan tambak non-udang terbukti efektif mencegah penularan WSSV dari tambak tradisional sekitarnya. Kata kunci: budidaya udang tradisional, windu, biosekuriti, manajemen klaster  White spot syndrome virus (WSSV) has become epidemic in Indonesia and affecting shrimp production lost in shrimp farm. Virus has transmitted from one to other ponds, mostly by crustacean, but more often transmit through water from affected pond. A cluster model, consist of two and three ponds surrounded by non-shrimp growing pond as biosecurity has developed. The model aim to prevent white spot virus transmission in giant shrimp extensive pond. The study was conducted in two sites at Demak district, Central Java province. Cluster consist of three shrimp ponds in site I, and cluster consist of two shrimp ponds, each surrounded by non-shrimp growing ponds. As control we also compare to 5 extensive shrimp ponds in site I and other three shrimp grow out ponds in site II, with neither no cluster system nor surrounded by non-shrimp pond as biosecurity. Result of the study shown that cluster of shrimp ponds surrounded  by non-shrimp pond harvested at DOC 105,6±4,5 days significantly longer than that of control that harvested at 60,9±16,0 days because of outbreak, survival rate at 77,6±3,6 %, significantly higher than that of control at 22,6±15,8 % and shrimp production of 425,1±146,6 kg.ha-1 significantly higher than that of control at 54,5±47,6 kg.ha-1. These results suggest that implementation of Better Management Practices (BMP) by arranging shrimp ponds in cluster and surrounding by non-shrimp ponds proven effectively prevent WSSV transmission from traditional shrimp ponds in surrounding area. Keywords: extensive shrimp pond, giant tiger prawn, biosecurity, cluster management

oai:ojs.ejournal.undip.ac.id:article/64562 2024-12-10T15:14:41Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/64562 2024-12-10T15:14:41Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 3 (2024): Ilmu Kelautan; 372-384 Suryono, Chrisna Adhi; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Santoso, Adi; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Yudiati, Ervia; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Tropical Marine Biotechnology, Faculty of Fisheries and Marine Science, Diponegoro University Yulianto, Bambang; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Sunaryo, Sunaryo; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Azhar, Nuril; Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University Tropical Marine Biotechnology, Faculty of Fisheries and Marine Science, Diponegoro University Alghazeer, Rabia; Department of Chemistry, Faculty of Sciences, University of Tripoli 2024-09-05 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/64562 alginate; Artemia; immune; Vibrio spp. en Alginate is known as an immunostimulant. The comprehensive study of Artemia on its co-activity with Lactobacillus bulgaricus resolves the relationship of feed digestibility, hematological parameters, gene expression, feed digestibility, and disease-resistant have not been covered. This study aimed to determine the effect of various doses alginate with Lactobacillus bulgaricus bio-encapsulated Artemia in Vibrio vulnificus, V. parahaemolyticus, and V. harveyi challenged. Alginate from Sargassum sp. L. bulgaricus were cultured and grown with de Man, Rogosa and Shape media. Nauplii Artemia was encapsulated for one hour with 400, 600, 800 ppm alginate doses, with and without probiotics. The Artemia then was challenged with three Vibrio spp. The Artemia mortality, immune parameters (Phenol Oxidase, Super-oxide Dismutase) were evaluated. Pro Phenol Oxidase, b-1,3-glucan-binding proteins (LGBP), and Lectin gene expression as well as gut evacuation time, fullness of gut were recorded.  Compared to the non-probiotic alginate, co- probiotic activated and improved the mortality rate of 400 ppm alginate from 100% to 30-70% (36 h), CMI of 276-702, and mortality reduction (41.21-74.59%). The co-activity of 400 ppm alginate and L. bulgaricus resulted in higher PO and SOD activity. LGBP and proPO gene expression were also upregulated 233.44% and 185.17%. The gut evacuation time and fullness of alginate 400 ppm and L. bulgaricus treatment have also resulted in better performance than those of 800 ppm alginate without probiotics. Alginate and L. bulgaricus probiotics cooperated synergically through pre and probiotic mechanisms. This Artemia bio model defines that this combination will improve the survival rate, immune system, and gene expression. In the future this will be beneficial in terms of shrimp production in ponds.

oai:ojs.ejournal.undip.ac.id:article/1717 2017-08-19T22:48:25Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1717 2017-08-19T22:48:25Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 4 (2010): Ilmu Kelautan; 179-193 Ningsih, Nining Sari; Kelompok Keahlian Oseanografi, FITB, Institut Teknologi Bandung Gedung Lab Tek XI, Lt. 1, ITB, Jl. Ganesha 10, Bandung 40132, Indonesia. Telp.: (022)-2505253, Fax: (022)-2534139, E-mail: nining@fitb.itb.ac.id Hadi, Safwan; Kelompok Keahlian Oseanografi, FITB, Institut Teknologi Bandung Gedung Lab Tek XI, Lt. 1, ITB, Jl. Ganesha 10, Bandung 40132, Indonesia. Telp.: (022)-2505253, Fax: (022)-2534139 Harto, Agung B.; Program Magister Teknik Geodesi dan Geomatika, FITB - ITB, Jl. Ganesha 10 Bandung Utami, M. D.; Kelompok Keahlian Oseanografi, FITB, Institut Teknologi Bandung Gedung Lab Tek XI, Lt. 1, ITB, Jl. Ganesha 10, Bandung 40132, Indonesia. Telp.: (022)-2505253, Fax: (022)-2534139 Rudiawan, Amanda P; Program Magister Teknik Geodesi dan Geomatika, FITB - ITB, Jl. Ganesha 10 Bandung 2012-02-11 05:47:03 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1717 id Gelombang badai pasang (storm tide) yang dibangkitkan pasang surut dan siklon tropis di Samudera Hindia sering menerjang kawasan pesisir selatan Jawa, Bali, dan Nusa Tenggara Barat (NTB). Pada penelitian ini, model hidrodinamika dua dimensi (2D) horisontal Mike 21 digunakan untuk mensimulasikan tinggi gelombang, run-up, dan genangan di sepanjang kawasan pesisir selatan Jawa, Bali, dan NTB yang ditimbulkan oleh penjalaran gelombang pasang surut dan badai yang dibangkitkan oleh badai Jacob (2-12 Maret 2007) dan George (3-9 Maret 2007) di perairan pantai barat laut Australia. Penjalaran gelombang badai pasang disimulasikan dengan menggunakan data elevasi pasang surut di daerah batas terbuka model, angin, tekanan udara, dan lintasan badai. Data elevasi pasang surut diperoleh dari TMD (tide model driver), sedangkan data angin dan tekanan udara diperoleh dari NCEP (National Centers for Environmental Prediction). Data sea level anomaly (SLA) mingguan dari TOPEX Poseidon digunakan untuk memverifikasi tinggi gelombang badai (surge) yang dihasilkan model. Gelombang badai (surge) tertinggi di kawasan pesisir selatan Jawa, Bali, dan NTB, masing-masing&nbsp; terjadi di Nusa Kambangan (Jawa; 19,0 cm), Tuban (Bali; 14,7 cm), Teluk Gumbang (Lombok; 12,2 cm), dan Tanjung Labulawah (Sumbawa; 12,5 cm). Jarak genangan maksimum gelombang badai pasang serta tinggi run-up yang menyertainya (H) terjadi di Teluk Penanjung (Jawa; R max = 835,2 m, H= 0,73 m), Tuban (Bali; R max = 623,5 m, H= 1,02 m), Tanjung Ringgit (Lombok; R max = 1112,3 m, H= 1,03 m) dan Teluk Cempi (Sumbawa; R max = 4136,5 m, H= 1,10 m)Kata kunci : gelombang badai, gelombang badai pasang, genangan, run-up, model hidrodinamika&nbsp;Storm surges generated by tropical cyclone in the Indian Ocean have often attacked southern coasts of Java, Bali, and Nusa Tenggara Barat (NTB). In this study, A two-dimensional (2D) hydrodynamic model of Mike 21 has been applied to simulate wave height, run-up, and inundation along the southern coasts of Java, Bali, and NTB, generated by tides and the Cyclone Jacob during 2-12 March 2007 and by the Cyclone George during 3-9 March 2007 in northwestern coastal waters of Australia. The storm tide event was simulated by imposing tidal elevations at the open boundaries, winds, air pressure, and storm tracks. Tidal elevation data were derived from TMD (tide model driver), while wind and air pressure data were obtained from NCEP (National Centers for Environmental Prediction). The weekly TOPEX Poseidon Sea Level Anomaly (SLA) was used to validate the model results of surge height. Highest surges along the southern coasts of Java, Bali, and NTB existed at Nusa Kambangan (Jawa; 19.0 cm), Tuban (Bali; 14.7 cm), Teluk Gumbang (Lombok; 12.2 cm), and Tanjung Labulawah (Sumbawa; 12.5 cm). Maximum distances of storm tide flooding (Rmax) and their associated run-up heights (H) occured at Teluk Penanjung (Jawa; R max = 835.2 m, H = 0.73 m), Tuban (Bali; Rmax = 623. m, H = 1.02 m), Tanjung Ringgit (Lombok; R max = 1112.3 m, H = 1.03 m), and Teluk Cempi (Sumbawa; Rmax = 4136.5 m, H= 1.0 m). Key words : storm surges, storm tide, inundation, run-up, hydrodynamic model.

oai:ojs.ejournal.undip.ac.id:article/19319 2019-03-26T05:29:35Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19319 2019-03-26T05:29:35Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 1 (2002): Jurnal Ilmu Kelautan; 37-42 Suprapto, Djoko; Faculty of Fisheries and Marine Science, Diponegoro University, Semarang 2008-01-08 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19319 en Sebuah tekhnik baru pengukuran tingkat filtrasi bivalvia telah dirancang dan digunakan untuk mengukur filtrasi dari Pecten maximus L. Prinsip penghitungan teknik pengukuran filtrasi ini adalah menghitung penurunan konsentrasi fitoplankton dalam media pengukuran. Alat ini selanjutnya diuji untuk menghitung konsumsi fitoplankton delam hubungannya dengan berat kering P. maximus L. Hasil pengukuran dinyatakan dalam persamaan alometrik (Y=aXb). Konsumsi fitoplankton untuk populasi Brest, Saint Breiux. Scotlandia dan lrlandia berturut-turut adalah sebagai berikut: 85,17X012, 97,18X0,16, 85,98X0,18 dan 75,70X0,18 Kata kunci: laju filtrasi, scallop, berat kering A flow through system for measuring filtration rate of bivalve is described. The principle of measurement was to calculate the decrease of algal concentration in the water medium where the experimental animal was placed. The measuring system was tested to calculate the phytoplankton consumption related to dry body weight of scallop Pecten maximus L. coming from different populations. This corretetion is expressed by allometric equation (Y=aXb). Allometric equation of Brest, Saint Brieux. Scotland, Ireland populations are: 85,17X012, 97,18X0,16, 85,98X0,18 dan 75,70X0,18 successivelyKeywords: filtration rate, Scallop, dry body weight

oai:ojs.ejournal.undip.ac.id:article/2336 2012-03-03T05:38:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2336 2012-03-03T05:38:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 4 (2004): Jurnal Ilmu Kelautan; 186-189 Triyanto, Agus; Jurusan Ilmu Kelautan – FPIK – UNDIP, Kampus Tembalang Semarang 50359, Indonesia Wibowo, Edi; Jurusan Ilmu Kelautan – FPIK – UNDIP, Kampus Tembalang Semarang 50359, Indonesia Suryono, Suryono; Jurusan Ilmu Kelautan – FPIK – UNDIP, Kampus Tembalang Semarang 50359, Indonesia Sapta S, Rahayu; Jurusan Ilmu Kelautan – FPIK – UNDIP, Kampus Tembalang Semarang 50359, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2336 en Pada dekade terakhir, pencarian senyawa bioaktif baru dari alam dilakukan sangat intensif. Aegiceras corniculatum merupakan salah satu spesies mangrove yang telah diketahui berpotensi sebagai sumbersenyawa anti bakteri. Penelitian ini bertujuan untuk mengetahui potensi daun mangrove Aegiceras corniculatum sebagai sumber bahan bioaktif anti bakteri Vibrio harveyi dan Vibrio parahaemolyticus. Padapenelitian Aegiceras corniculatum diambil dari pantai Teluk Awur, Jepara. Sampel diekstrak dengan metanol. Uji anti bakteri terhadap Vibrio harveyi dan Vibrio parhaemolyticus dilakukan dengan metode difusi agardengan konsentrasi 5000, 10.000, dan 20.000 ppm dengan pelarut aquades. Hasil penelitian menunjukkan bahwa ekstrak daun A. corniculatum mampu menghambat V. parahaemolyticus pada semua konsentrasi dengan zona hambatan 0,275-0,55 mm. Namun ekstrak ini tidak menunjukan daya hambat terhadap laju pertumbuhan bakteri V. harveyi.Kata kunci : Aegiceras corniculatum, Bioaktif, Antibakteri, Vibrio harveyi, Vibrio parahaemolyticusExploration of new bioactive compounds from nature has been conducted intensively In the last decade. Aegiceras corniculatum, is one of mangrove species which has potent as a source of antibacterial compounds.The aim of this research is to investigate the potency of Aegiceras corniculatum leaves as a sorce of anti bacterial Vibrio harveyi and Vibrio parahaemolyticus substances. Leaves of Aegiceras corniculatum wascollected from Teluk Awur Jepara. Experimental laboratories method was used in this research, while data was analyzed descriptively. Sample was extracted by using methanol. Agar Diffusion method was utilizedon anti bacterial test against Vibrio harveyi and Vibrio parahaemolyticus with concentration 5.000, 10.000 and 20.000 ppm in aquadest. The result of the test showed that Aegiceras corniculatum leaves extractinhibit the growth of the V. parahaemolyticus with inhibtion zone between 0,275-0,55 mm, but not active against Vibrio harveyi.Key words : Aegiceras corniculatum, bioactive, antibacteria, Vibrio harveyi, Vibrio parahaemolyticus

oai:ojs.ejournal.undip.ac.id:article/43254 2022-06-18T08:23:33Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/43254 2022-06-18T08:23:33Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 1 (2022): Ilmu Kelautan; 29-36 Sadarun, Baru; Faculty of Fisheries and Marine Science, Universitas Halu Oleo Rahmatika, Nur Syifa; Faculty of Medicine, Universitas Halu Oleo Yodha, Agung Wibawa Mahatva; Faculty of Pharmacy, Universitas Halu Oleo Fristiohady, Adryan; Faculty of Pharmacy, Universitas Halu Oleo Sundowo, Andini; Research Centre for Chemistry, Indonesia Institute of Sciences Baharum, Syarul Nataqain; Institute of Systems Biology, Universiti Kebangsaan Malaysia Sahidin, Idin; Faculty of Pharmacy, Universitas Hau Oleo 2022-02-13 11:22:16 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/43254 Nepthea sp.; non-polar fraction; antioxidant; cytotoxic; South East Sulawesi en Soft coral Nepthea sp. grows in the seas of South-East Sulawesi, Indonesia. However, information on the chemical and pharmaceutical aspects of this genus is still limited. Therefore, this research aims to explore the chemical contents and biological activities of Nepthea sp. The sample was collected from the waters of Saponda Island by SCUBA diving. It was extracted by ethyl acetate and fractionated using vacuum liquid chromatography. The chemical content was analyzed by phytochemical screening, LC-MS/MS analysis, Total Phenolics Content and Total Flavonoids Contents. Antioxidant potency was evaluated by DPPH (2,2-diphenyl-1-picrylhydrazyl) radicals and ABTS (2,2’-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid). Cytotoxicity property was analyzed by MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assays. The result showed that the fractionation of Nepthea ethylacetate extracts produced six fractions (A-F). Fractions A and B contain non-polar compounds. Based on LC-MS/MS data, the non-polar compounds in Fraction A and B include achillin, atractylenolide II, buthyl isobuthyl phthalate, rengyolester, 2a-acetoxycostic acid, ocotillol acetate, petasitolone and some unidentified compounds that are C33H58O4, C15H21NO, C21H33NO, and C16H20O4. In general, the antioxidant and cytotoxic properties of all samples are in the weak category, however, when examined for each sample, the antioxidant properties of fraction B is slightly better than fraction A based on the IC50 value of DPPH and ABTS. Cytotoxicity of Fraction A is better than Fraction B against Breast Cancer cell lines MCF-7. The non-polar fraction of Nepthea sp. can be developed as raw material for the discovery of new compounds, antioxidant and anticancer agents, especially breast cancer.

oai:ojs.ejournal.undip.ac.id:article/447 2014-12-23T07:52:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/447 2014-12-23T07:52:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 1 (2009): Jurnal Ilmu Kelautan; 23-26 Djunaedi, Ali 2010-11-03 10:26:45 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/447 id Salah&nbsp;satu upaya untuk&nbsp;mengurangi tingkat kanibalisme pada budidaya rajungan (Portunus pelagicus&nbsp;Linn.) adalah&nbsp;dengan&nbsp;pemberian setter yang berupa substrat dasar. Tujuan penelitian adalah untuk&nbsp;mengetahui&nbsp;pengaruh&nbsp;perbedaan substrat dasar terhadap kelulushidupan dan pertumbuhan crablet rajungan.&nbsp;Rajungan stadia&nbsp;crablet (C-5)&nbsp;diperoleh dari BBPBAP jepara dengan berat awal 27,30 + 0,66 mg. Rajungan&nbsp;sebanyak&nbsp;25&nbsp;ekor dipelihara selama&nbsp;25&nbsp;hari dalam akuarium berukuran 40&nbsp;x&nbsp;30&nbsp;x&nbsp;30 cm. Metode yang&nbsp;digunakan adalah eksperimental laboratoris dengan rancangan acak lengkap dengan 4 perlakuan dan 3 ulangan.&nbsp;Perlakuan yang&nbsp;digunakan adalah jenis substrat yaitu, Pasir, Lumpur, Liat dan tanpa substrat&nbsp;sebagi kontrol. Hasilpenelitian&nbsp;menunjukkan bahwa perbedaan substrat dasar memberikan kelulushidupan&nbsp;dan pertumbuhan&nbsp;crablet&nbsp;rajungan yang tidak berbeda nyata (p&gt;0,05). &nbsp; Kata&nbsp;kunci&nbsp;:&nbsp;rajungan,&nbsp;crablet, substrat, kelulushidupan, pertumbuhan

oai:ojs.ejournal.undip.ac.id:article/8827 2017-10-27T08:50:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8827 2017-10-27T08:50:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 1 (2015): Ilmu Kelautan; 1-8 Mehdiabadi, Faeghe Eslami; Physical Oceanography, Hormozgan University, Bandar- Abbas, Iran Mehdizadeh, Mehdi Mohammad; Assistant Prof. of Physical Oceanography, Hormozgan University, Bandar- Abbas, Iran Rahbani, Maryam; Assistant Prof. of Physical Oceanography, Hormozgan University, Bandar- Abbas, Iran 2015-03-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8827 en Daerah pesisir di bumi adalah salah satu zona paling dinamis yang dipengaruhi oleh berbagai parameter seperti gelombang, arus, dan badai. Untuk mengelola serta mengkontrol zona tersebut adalah penting untuk mempelajari hidrodinamika daerah. Penelitian ini menggunakan MIKE 21/3 coupled Model FM untuk melihat gelombang (wind driven waves) di sekitar Pulau Larak di Selat Hormuz. Untuk mensimulasikan pola gelombang di wilayah tersebut digunakan irregular triangular grid.  Pola arus di sekitar pulau dipelajari untuk jangka waktu satu tahun. Ditemukan bahwa gelombang yang ditimbulkan karena arus di sekitar pantai utara pulau relatif lemah. Terlihat pula bahwa gelombang yang ada di daerah tersebut terutama ke arah timur laut. Tinggi gelombang rata-rata di surfzone adalah sekitar 0,5 m., Dengan kecepatan arus sekitar 0,2 m.s-1. Mengingat angin menang dan arah gelombang, disimpulkan bahwa pantai utara Pulau Larak tempat yang cocok untuk konstruksi pelabuhan dan kegiatan memancing. Kata kunci: gelombang, arus, MIKE, Pulau Larak Coastal areas on earth are among the most dynamic zones which affected by different parameters such as waves, currents, and storms. To manage and control such a zone it is essential to study the hydrodynamic of the area. MIKE 21/3 Coupled Model FM was used to investigate the wind driven waves around Larak Island located in the Strait of Hormuz. To simulate the pattern of the wave in the area irregular triangular grid was applied. The pattern of current around the Island was studied for a one year period of simulation. It was found that the current induced wave break around the Northern coast of the Island is relatively weak. It was also observed that the prevailed wave in the area is mainly toward the Northeast. The averaged wave height in the surfzone is about 0.5 m., with the current velocity of about 0.2 m.s-1. Considering the prevailed wind and wave direction, it was concluded that the northern coasts of the Larak Island are suitable places for harbor construction, recreational and fishing activities. Keywords: Waves Break, Current, MIKE, Larak Island 

oai:ojs.ejournal.undip.ac.id:article/69054 2025-06-15T08:04:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/69054 2025-06-15T08:04:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 1 (2025): Ilmu Kelautan; 145-151 Lafta, Ali Abdulridha; Department of Marine Physics, Marine Science Center, University of Basrah Abdullah, Sadiq Salim; Department of Marine Physics, Marine Science Center, University of Basrah 2025-03-08 15:59:03 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/69054 SST; Arabian Gulf; Iraq marine water; Shamal wind en Understanding sea surface temperature (SST) Changes in coastal areas is crucial for many aspects of the coastal environment and maritime operations in these water systems. Although SST fluctuations have been frequently documented in various Arabian Gulf areas, such variations in Iraq's marine waters, situated northwest of the Arabian Gulf, are poorly understood. To determine the temporal variations of SST, we examined SST measurements taken off the coast of Iraq between 2017 and 2019. The results revealed that SST exhibited pronounced annual, semiannual, and seasonal fluctuations. The highest and lowest recorded SST values were 36.77 and 14.68  ͦ C, respectively. The seasonal averages of SST reach their maximum value during the summer season at 32.38 C and then are reduced to their lowest range during winter at 17.23 C. Furthermore, the results revealed that the highest SST was recorded in August of all three study years, namely 2017, 2018, and 2019. Meanwhile, the lowest recorded SST was observed in December of 2017 and February of both 2018 and 2019. The results also revealed a negative correlation between SST and Shamal winds. A perceived decrease in SST occurs with Shamal wind events, where the average reduction of SST reaches 2-3 C. At the same time, our results show that SST increases when the southeast wind is predominant. The results obtained in this study could be beneficial for several aspects of the environmental and maritime at this significant part of the Arabian Gulf.

oai:ojs.ejournal.undip.ac.id:article/2192 2014-07-10T17:03:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2192 2014-07-10T17:03:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 4 (2006): Jurnal Ilmu Kelautan; 234-240 Kadi, Achmad; Bidang Sumberdaya Laut Pusat Penelitian Oseanografi LIPI, Jakarta Jl. Pasir Putih I No 1 Ancol Timur, Jakarta 14430 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2192 en Penelitian makro algae dilaksanakan di pulau Pengelap, Dedap, Abang Besar dan Abang Kecil, Kabupaten Riau pada bulan April - Mei 2006. Metode yang digunakan adalah transek kuadrat. Hasil pengamatanmenunjukan terdapatnya 24 jenis makroalgae. Sargassum polysystum ditemukan sebagai jenis yang paling melimpah, dengan nilai indeks kerapatan 4,50 rumpun/m2. Indeks diversitas (H) 1,904 dan indeks kemerataan tertinggi terdapat di P. Pengelap. Beberapa jenis makroalgae tersebar dalam rumpun-rumpun. Substrat rataan terumbu terdegradasi oleh kegiatan manusia dan faktor alam, sehingga menimbulkan dampak pada kerapatan dan kekayaan jenisnya.Kata kunci : Komunitas makro alga, Kepulauan RiauMacroalgae research in the reef flats of Pengelap, Dedap, Abang Basar and Abang Kecil waters was carried on April &ndash; May 2006. Field method on the research using quadrat transect. Chlorophyceae, Phaeophyceaeand Rhodophyceae were found in research area in various density and diversity. Species richness in the research location was 24. The highest abundance (density) was 4,50 clump/m&sup2; by Sargassum polysystum.The higher diversity index (H) was 1,904 and equitability index (e) was 1.662 in Pengelap Island. Some species distributed on clumps pattern. Several part of the macroalgae habitats were degraded either by localpeople activities or by natural process, which give impact to the richness and diverse of these specimens.Key words : Macroalgae community, Riau Island

oai:ojs.ejournal.undip.ac.id:article/19106 2021-10-13T03:39:24Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19106 2021-10-13T03:39:24Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 4 (2018): Ilmu Kelautan; 156-162 Fithor, Alin; Environmental Science Program, Sebelas Maret University Sutrisno, Joko; Environmental Science Program, Sebelas Maret University Indarjo, Agus; Marine Science Department, Faculty of Fisheries and Marine Science, Diponegoro University 2019-01-04 12:20:42 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19106 Community; society; activity; management; tourist area Sebelas Maret University en Management of mangrove ecosystem is an important agenda in conserving tourism spots in coastal area. This research aimed at examining the recreation activities done in mangrove ecosystem area and mangrove forest strategy in Maron Beach, Tambakharjo, Semarang Municipality. This research employed a survey approach using direct interviews and field observations. The repondent included the entire population in the research area. Samples of this study were selected using cluster random sampling technique. Data were collected by observations, interviews and document study, followed by SWOT analysis. The results showed that the opening of Maron Beach recreation area has given some negative impacts to the post-rehabilitation of mangrove ecosystems, reducing the function mangrove in protecting the shore from coastal abrasion, reducing ability of wind abrasion protection, weakening the environmental conditions, decreasing the number of visitors and decreasing the production of fish. Mangrove forest management should be progressive, which means that research should be done in poor and unsteady conditions which result allow the market to continuously expand, enlarge the market growth and maximize the progress. Through the implementation of a non-overlapping effort, this condition can be improved.

oai:ojs.ejournal.undip.ac.id:article/2383 2022-04-06T18:18:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2383 2022-04-06T18:18:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 1 (2004): Jurnal Ilmu Kelautan; 50-53 Sabdono, Agus; Marine Science Department, Diponegoro University Telp. 024-7474698; e-mail: agus_sabdono@yahoo.com Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2383 en Bakteri yang diisolasi dari permukaan karang mampu menggunakan senyawa herbisida fenilurea diuron sebagai sumber karbon dan energi. Organisme ini mampu menggunakan diuron hingga 125 mg/l. Namunfase lag dan waktu untuk mendegradasi mengalami kelambatan bila berada pada konsentrasi diatas 100 mg/l diuron. Kinetika pertumbuhan bakteri ini dilakukan secara kultur batch. Estimasi laju pertumbuhanmaksimum (&igrave;max) sebesar 0,46 j-1 diperoleh dari pengukuran turbiditas dan nilai konstanta kejenuhan pertumbuhan (Ks) sebesar 49,5 mg/l diuron. Pengaruh konsentrasi diuron paling tinggi pada laju penggunaansubstrat spesifik (&oacute;) adalah 0,0195 j-1 yang diperoleh pada perlakuan konsentrasi 125 mg/l diuron.Kata kunci: bakteri karang, diuron, kinetika pertumbuhanA bacterium which utilizes phenylurea diuron as a sole source of carbon and energy was isolated from coral surface. The organism utilized diuron up to 125 mg per liter. The lag phase and time for degradation, however, were severely prolonged at diuron concentrations above 100 mg/liter. The growth kinetics of coral bacterium was studied in batch culture. Estimation of maximum growth rates (&igrave;max), obtained from turbidity measurements, was 0.46 h-1 and half-saturation growth constant (Cs) was 49.5 mg/l diuron. The highest effect of diuron concentration on the specific substrate removal rate (&oacute;) is 0.0195 h-1 obtained from 125 mg/l diuron concentration.Key words : coral bacterium , diuron, growth kinetics

oai:ojs.ejournal.undip.ac.id:article/47431 2026-05-21T04:27:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/47431 2026-05-21T04:27:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 4 (2022): Ilmu Kelautan; 341-348 https://ejournal.undip.ac.id/index.php/ijms/article/download/47431/149721 Nursalim, Nining; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Trianto, Agus; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Cahyani, Ni Kadek Dita; Department of Biology, Faculty of Science and Mathematics, Universitas Diponegoro Kholilah, Nenik; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Janarkho, Galank Fad'qul; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro Hardianto, Eko; Graduate School of Engineering and Science, University of the Ryukyus, Subagiyo, Subagiyo; Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Diponegoro 2022-12-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/47431 Caesio cuning; Genetic; Morphological; Nyamuk Island en Yellowtail fusilier, Caesio cuning (Bloch, 1971) is the main catch of fishermen on the Nyamuk Island, Karimunjawa. C. cuning also has a unique character in the form of different eye color, white, red, and white-red. These differences were raise question whether the eye colors will be differentiated the morphology, and the genetic diversity of C. cuning. This research aims to study the biodiversity of C. cuning caught by fishermen on Nyamuk Island, Karimunjawa, based on their morphology, and molecular using mtDNA control region gene marker.  This study also wanted to test, if different eye colors observed on the sample also reflected at the genetic level. A unique thing was found in morphological observations in the form of eye colors in C. cuning (white, red and white-red). Measurements of 19 morphometric characters were conducted on 44 samples directly in the field. Twenty four  (24) samples with three different eye colors were selected for molecular assay of locus control region mtDNA in the laboratory. Morphological analysis showed the total length of 44 samples of C. cuning ranged from 15-29.4 cm. The total length of white eye color ranged from 15-29.4 cm from 20 samples, red-eye color 17-26 cm from 20 samples and white-red eye color 22-24.6 from 4 samples. Molecular test showed that the fish observed was indeed C. cuning with a similarity of 97.07%-99.27% of NCBI data. The genetic distance C. cuning between individuals was 0-3%.  Genetic distance in the same eye color and different have the same value of 2%. Twenty haplotypes were obtained from 24 samples with high haplotypes diversity, values ranging from 0.978-1,000. The nucleotide diversity ranges from 0.019-0.021. There is no molecular difference between C. cuning with different eye colors.

oai:ojs.ejournal.undip.ac.id:article/559 2020-10-25T22:42:32Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/559 2020-10-25T22:42:32Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 3 (2008): Jurnal Ilmu Kelautan; 171-176 Djokosetiyanto, Djokosetiyanto Effendi, I. Antara, K. L. 2010-11-15 05:47:34 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/559 id Kebutuhan rumput laut yang tinggi menuntut peningkatan produksinya. Kappaphycus alvarezii, seperti K. alvarezii varietas Maumere dan Sacol serta Eucheuma denticuiatum merupakan jenis rumput laut yang banyak dibudidayakan. Tujuan penelitian ini adalah untuk menentukan pertumbuhan terbaik diantara ketiga jenis rumput laut tersebut yang dibudidaya dengan metode long line. Setiap 50 m tali ris diikatkan 20 bibit per jenis rumput laut yang masing-masing berbobot 100 gram dengan jarak antar bibit 2 meter. Rancangan Acak Kelompok (RAK) digunakan dengan jenis rumput laut sebagai perlakuan dan lokasi sebagai kelompok. Hasil penelitian menunjukan K. alvarezii varietas Maumere menghasilkan rata-rata bobot basah dan pertumbuhan harian (%) per minggu tertinggi tetapi dengan bobot kering terendah, sedangkan E. denticuiatum menghasilkan bobot kering tertinggi. Jenis yang paling tahan terhadap penyakit adalah K. alvarezii varietas Maumere, sedangkan jenis yang paling rentan terhadap serangan penyakit adalah E. denticuiatum.Kata kunci :&nbsp;rumput laut, varietas, bobot kering, bobot basah

oai:ojs.ejournal.undip.ac.id:article/10519 2020-04-17T06:02:31Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/10519 2020-04-17T06:02:31Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 1 (2016): Ilmu Kelautan; 29-36 Dwinovantyo, Angga; Bogor Agricultural University Prartono, Tri; Bogor Agricultural University Rahmaniar, Restya; Bogor Agricultural University Prabowo, Nico Wantona; Bogor Agricultural University Susanti, Santi; Bogor Agricultural University 2016-03-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/10519 en A laboratory study was conducted with the aim to isolate and identify bacteria from sea sediment and test their biodegradation ability in two place where contaminated with oil spill. Five sediment samples were dissolved by using sterile sea water, and then bacteria isolated with total plate count (TPC) method. Isolates bacteria was cultivated, and adapted using the nutrient conditioned sea water medium. Biodegradation process was done by mixing the bacteria with crude oil and shaken for few days. The number of bacteria isolated varied from 2 x 102 CFU ml-1 to 6 x 106 CFU ml-1 and apparently increased after cultivation and adaptation with oily media. Bacteria identified during this study were Fundibacter sp., Alcanivorax sp., and Marinobacter sp.. The result of biodegradation process was statistically analyzed and obtained that the bacteria are effective in degrading oil in seven days with constant of biodegradation rate was 0.1766. GC-MS analysis was conducted to prove the decomposition of carbon chain by bacteria and revealed oil degradation in carbon number 11 to 27. Based on all analysis, marine sediment bacteria can degrade the oil spill. Keywords : Bacteria, Biodegradation, GC-MS, Marine Sediments, Oil spill.

oai:ojs.ejournal.undip.ac.id:article/64105 2026-02-11T19:42:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/64105 2026-02-11T19:42:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 4 (2025): Ilmu Kelautan; 507-518 Erlangga, Haqqy Rerian; Department of Fisheries Management Resources, Faculty of Animal Science and Fisheries, Samawa University Siregar, Raissha Amanda; Department of Marine Science, Faculty of Marine and Fisheries, Universitas Syiah Kuala Anggraini, Nurlita Putri; Department of Marine Science, Faculty of Marine and Fisheries, Universitas Syiah Kuala Gelis, Ester Restiana Endang; Department of Fisheries, Faculty of Animal Science, Universitas Jambi Borbee, Erin; Department of Biological Sciences, University of Rhode Island Lane, Christopher E.; Department of Biological Sciences, University of Rhode Island Ayu, Inna Puspa; Department of Fisheries Management Resources, Faculty of Fisheries and Marine Science, IPB University Subhan, Beginer; Department of Fisheries Management Resources, Faculty of Fisheries and Marine Science, IPB University Madduppa, Hawis; Department of Marine Science, Faculty of Fisheries and Marine Science, IPB University Ismet, Meutia Samira; Department of Marine Science, Faculty of Fisheries and Marine Science, IPB University 2025-12-20 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/64105 gut content; diet partition; Serranids; trophic level; Raja Ampat; Papua en Groupers (Family Serranidae) are well known as top predators in the coral reef ecosystem. This family is one of the most important ecological organisms in the food web at Raja Ampat reefs. The aim of this study, therefore, was to investigate the food composition as well as the inter and intra-specific competition of two Serranidae species, including Epinephelus malabaricus and Epinephelus areolatus in Waisai, Raja Ampat. This study is expected to fill gaps on groupers food preferences. A total sample were collected at the fish landing site was 6 fish (2 sample of Epinephelus areolatus and 4 sample of Epinephelus malabacrius). DNA Amplification was performed using the COI mithocondrial gene marker (HCOI12198 and LCOI1490 primers). Bioinformatics and data analysis using QIIME 2 and R Software. This further comprised of α and β diversities. The results showed that Serranidae diet composition comprise of 13 species. Epinephelus malabaricus species demonstrated more diet composition varieties than Epinephelus areolatus. The most abundant diet found in all fishes’ gut samples was come from Scianidae family. The results indicate that there is an absence of any interspecific competition between the two species studied, due to a wide variation of diet composition. Conversely, intraspesific competitions existed amongst the Epinephelus malabaricus niches. This study highlighted DNA Metabarcoding application in trophic level and food web studies, as well as facilitating the development of information for ecological references.

oai:ojs.ejournal.undip.ac.id:article/2255 2012-02-28T11:41:34Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2255 2012-02-28T11:41:34Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 1 (2006): Jurnal Ilmu Kelautan; 37-43 Sya'rani, Lachmuddin; Jurusan Perikanan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Semarang, Indonesia Hariadi, Hariadi; Program Studi Oseanografi, Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Semarang, Indonesia Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2255 en Sedimentasi di perairan pantai sangat dipengaruhi oleh faktor oseanografi&nbsp; dan aliran air sungai yang bermuara di perairan yang bersangkutan. Dengan demikian endapan sedimen yang ada dapat bersumber dari laut maupun dari darat. Dengan mempelajari tekstur sedimen dan mineraloginya, maka dapat diperkirakan sumber sedimen dimaksud. Tujuan penelitian untuk mengetahui tekstur sedimen, mineralogi sedimen dan penyebaran karbonat yang selanjutnya digunakan sebagai dasar analisis penentuan sumber sedimen dan kondisi energi pengendapannya. Hasil penelitian menunjukkan&nbsp; bahwa sedimen yang ada mempunyai ukuran&nbsp; butir dominan pasir lanauan. Hasil analisis petrografi&nbsp; menunjukkan bahwa semua sedimen&nbsp; mengandung gelas volkanik yang ukuran dan persentasenya semakin besar ke arah sungai. Sedangkan kandungan&nbsp; karbonat dalam sedimen berkisar antara 1,514 % - 19,225% yang tersebar semakin besar ke arah laut lepas. Berdasarkan uraian tersebut, maka disimpulkan bahwa sumber sedimen berupa material volkanik&nbsp; yang berasal dari darat, sedangkan bahan karbonat berasal dari laut. Kata kunci: sedimen, petrografi, kandungan karbonat.&nbsp; Sedimentation in the coastal waters was influenced by oceanographic factors and the rivers which flowing to the waters, so the source of the sediment can be from the sea or the rivers. The sediment source can be identified by observation of&nbsp; the sediment texture and&nbsp; mineralogy. Result of research indicate that the grain size&nbsp; of sediment was dominated by silty sand. The petrography analysis indicate&nbsp; that all of sediment contain volcanic glass which size and content&nbsp; increased to the river. On the other hand, carbonate content in the sediment was about 1,514 - 19,225% which distributed and increase to the onshore. Based on the data can be concluded that the volcanic source was from onland and the carbonat was from the sea. Key words: sediment, petrography, carbonat content

oai:ojs.ejournal.undip.ac.id:article/27822 2021-10-13T00:59:58Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/27822 2021-10-13T00:59:58Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 1 (2020): Ilmu Kelautan; 15-22 Sugianti, Yayuk; Research Institute for Fish Resources Enhancement Mujiyanto, Mujiyanto; Research Institute for Fish Resources Enhancement 2020-03-08 09:15:10 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/27822 Banten; species diversity; seagrass; current status; Panjang Island Research Institute fo Fish Resources Enhancement en Damage to seagrass beds in Panjang Island, Banten, has increased every year. The most significant decline occurred at an interval of 2000-2005 with a decrease of about 22.9 ha. Seagrass damage continued to increase at the year between 1989-2002 as a result of natural stone mining and coastal reclamation activities to become industrial areas and ports. The objective of this study was to determine the characteristics of the species and current status of seagrass communities in Panjang Island waters, Banten. Analysis of seagrass data included identification of species, frequency, density, percent coverage, and important value index. Based on these results, it was found three species of seagrass on Panjang Island, Banten, including species of Enhalus acoroides, Cymodocea serrulata, and Syrongodium isoetifolium. The percentage of seagrass coverage at five different research stations, the highest percentage of seagrass coverage was at station IV with a percentage of coverage of 48.94% and the lowest coverage was obtained at station V of 10.28%. The calculation of the importance value index (INP) of seagrass in Panjang Island waters, Banten, showed that the highest INP value was found in the Cymodocea serrulata seagrass species which was 41.47 and the lowest was found in the Syrongodium isoetifolium seagrass species which was 16.81. PCA analysis was also conducted to determine the relationship of seagrass density with chemical physics parameters. The results obtained showed the condition of seagrass ecosystems in Panjang Island waters, Banten, which was at a level of moderate to severe damage. The results of PCA analysis showed that water temperature, nitrate concentration, DO, and TSS greatly influenced the density of seagrass in these waters.

oai:ojs.ejournal.undip.ac.id:article/6776 2019-08-26T01:59:38Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/6776 2019-08-26T01:59:38Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 1 (2013): Ilmu Kelautan; 1-6 Arisandi, Apri; Jurusan Ilmu Kelautan, Fakultas Pertanian, Universitas Trunojoyo, Jl. Raya Telang PO.BOX 2 Bangkalan, Madura, Indonesia. 69162 Farid, Akhmad; Jurusan Ilmu Kelautan, Fakultas Pertanian, Universitas Trunojoyo, Jl. Raya Telang PO.BOX 2 Bangkalan, Madura, Indonesia. 69162 Wahyuni, Eva Ari; Jurusan Ilmu Kelautan, Fakultas Pertanian, Universitas Trunojoyo, Jl. Raya Telang PO.BOX 2 Bangkalan, Madura, Indonesia. 69162 Rokhmaniati, Siti; Balai Karantina Ikan, Pengendalian Mutu dan Keamanan Hasil Perikanan Kelas 1 Jl. Kalimas Baru 86 Surabaya, Indonesia. Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/6776 en Rumput laut, Eucheuma cottonii, merupakan salah satu produk kelautan yang memiliki nilai ekonomis penting. Budidaya rumput laut jenis ini merupakan usaha untuk memenuhi tingginya permintaan pasar. Salah satu kendala yang masih dihadapi adalah adanya infeksi ice-ice dan epifit. Perubahan cuaca yang tidak dapat diprediksi saat pergantian musim dapat memicu peningkatan kendala ini, sehingga dapat menyebabkan rendahnya pertumbuhan E. cottonii. Penelitian ini bertujuan untuk mengetahui dampak infeksi ice-ice dan epifit, terhadap pertumbuhan E. cottonii di perairan laut Sumenep, Madura. Penelitian dilakukan menggunakan metode budidaya dalam rakit apung, thallus E.cottonii yang terinfeksi ice-ice dan epifit diamati berdasarkan tanda-tanda kelainan morfologi dan dihitung rata-rata pertumbuhan hariannya.  Hasil penelitian menunjukkan, jumlah thallus E. cottonii dalam rakit yang terinfeksi ice-ice dan epifit pada hari ke 30 mencapai 40,19-57,71%, dan meningkat menjadi 90,24-95,24% pada hari ke 60.  Infeksi ini menyebabkan rata-rata pertumbuhan harian E. cottonii pada hari ke 45 menurun hingga -3,76%, oleh karena itu E. cottonii yang telah terinfeksi harus segera dipanen. Kata kunci: ice-ice, epifit, pertumbuhan, Eucheuma cottonii, rumput laut Seaweed, Eucheuma cottonii, is one of marine products that have significant economic value. Development of seaweed cultivation is an attempt to meet the high market demand. One of the problems faced by seaweed cultivation is the presence of ice-ice and epiphytic infection. Unpredictable weather changes during the turn of seasons can lead to the increase of ice-ice and epiphytic infection, which in could cause the low growth of Eucheuma cottonii. This research aimed to determine the impact of ice-ice and epiphytes infection on the growth of E. cottonii in Sumenep, Madura Island. The research was conducted using floating raft method. Furthermore, from the infected E. cottonii thallus of ice-ice and epiphytic was observed by morphological abnormalities and calculated the average daily gain. The results showed that ice-ice and epiphytic infected of thallus in raft about 40.19-57.71% at day 30 and than increase to 90.24-95.24% at day 60. This infection caused the average daily gain of E. cottonii decreased until -3.76% at day 45. At this period the infected E. cottonii should be harvested immediately. Keywords: ice-ice, ephypite, growth, Eucheuma cottonii, seaweed  

oai:ojs.ejournal.undip.ac.id:article/56355 2023-12-27T19:14:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/56355 2023-12-27T19:14:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 4 (2023): Ilmu Kelautan; 321-333 Putri Novianingrum, Milka; Study Program of Marine Science Magister, Faculty of Fisheries and Marine Science, Universitas Diponegoro Hartati, Retno; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Pribadi, Rudhi; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Käll, Sofia; Stockholm University Redjeki, Sri; Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro 2023-12-06 12:25:37 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/56355 Egg-Berried Female; Gonad Maturity Stages; No Take Zone; Portunus pelagicus en Despite being operated on a small scale, Blue Swimming Crab (BSC), Portunus pelagicus fishery substantially contributes to Indonesia's fisheries as the country's third-largest export commodity after tuna and shrimp. The high of BSC’s demand led to pressure on its stock. Hence a conservation area is needed to be set up, in this study, was proposed using reproduction indicators. with the case study of BSC Stock in Keboromo Waters, Pati Regency, North Central Java. The samples were collected from 38 sampling points at a distance of 2-12 miles from the coastline during November-December 2022 using collapsible crab traps.  A reproduction observation on female crabs was carried out on their carapace width and gonad maturity stage. The data then were analyzed for the percentage of egg-berried females (EBF), size at first maturity (Lm) and first captured (Lc), and their spawning potential Ratio (SPR).  This study found that the mature crabs (GMS2) in November and December were higher than in other stages while the proportion of ovigerous females (EBF) in December was higher than in November. At several sampling points, the size at first captures (Lc) was higher than that at first maturity (Lm) indicating a decrease in resource stocks due to a delay in the recruitment process. SPR of 19% showed that reproductive potential should be maintained before recruitment is limited, therefore based on the existence of EBF in particular sampling points it is recommended three conservation areas as a temporary no-take zone in BSC fishing ground in Keboromo Watres, Pati Regency.

oai:ojs.ejournal.undip.ac.id:article/1422 2017-08-19T22:49:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1422 2017-08-19T22:49:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 2 (2010): Ilmu Kelautan; 85-90 Yusron, Eddy; Bidang Penelitian Sumberdaya Laut, Puslit Oseanografi – LIPI Jl. Pasir Putih No. 1, Ancol Timur Jakarta Utara. Telp (021) 64713850, Fax (021) 64711948 E-mail: yusron_01@yahoo.co.id 2012-02-01 06:03:15 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1422 id Penelitian ekhinodermata di perairan Likupang, Minahasa Utara telah dilakukan pada bulan Juni dan Agustus 2008 di tiga stasiun. Pengambilan contoh biota dilakukan dengan menggunakan transek kuadrat ukuran 1m x 1m2. Dari hasil penelitian pada tiga lokasi didapatkan 28 jenis fauna ekhinodermata yang mewakili 7 jenis Holothuroidea, 9 jenis Echinoidea, 6 jenis Asteroidea dan 6 jenis Ophiuroidea. Kelompok Bulu babi atau Echinoidea merupakan kelompok yang paling menonjol untuk daerah lamun. Berdasarkan hasil transek yang dilakukan di tiga stasiun yang diamati, ternyata bahwa kelompok Bulu babi (Echinoidea) menempati tingkat kekayaan jenis relatif tinggi. Analisa kuantitatif memperlihatkan nilai indek diversitas tertinggi di Tiwoho stasiun 2 (H=1,380), nilai indek kemerataan tertinggi terdapat pada Lokasi Wolu stasiun 1 (J=0,900) dan nilai indek kekayaan jenis tertinggi didapatkan pada Lokasi Wolu stasiun 1 (D=13,377). Secara umum baik dalam jumlah jenis ataupun jumlah individu, fauna ekhinodermata di perairan Likupang, Minahasa Utara lebih miskin bila dibandingkan dengan di Perairan Tanjung Pai, Padaido Biak. Tujuan penelitian ini untuk melihat komposisi jenis, struktur komunitas, zonasi dan sebaran lokal. Kata kunci: Ekhinodermata, Keanekaragaman, Darunu,&nbsp; Minahasa Utara.&nbsp;Observation on echinoderm diversity was carried out at coastal waters of three stasion of, June and Augustus 2008. The Purpose of the present study was to analyse species composition, community structure, zonation, and spatial distribution of echinoderm.Sampling was done by using a transect quadrant of 1 m x 1 m2. The results at July showed that at both locations 28 species of echinoderms, belonging to of 7 species holothuroidea, 9 species of echinoidea, 6 species asteroidean and 6 specis ophiuoroidea. The echinoidea were relatively common in the sea gras&nbsp; zone. On the basis of population density, echinoidea was the dominant group and relatively highest in the individual density. The quantitative analysis on the abundance data revealed the highest diversity index of faunal assemblage at Tiwoho stasion 2 (H = 1,380) , the highest evenness index was exhibited by the echinoderms from Wolu stasion 1 (J = 0,900), while the highest species richness was represented by them from Wolu stasion 1 (D = 13,377). In general the number of species of echinoderm fauna in the Likupang Bay is smaller than that in the Padaido islands. The purpose of the present study was to see species composition, structure, zonation and spatial distribution of echinoderm. Key words: Echinoderm, Diversity, Darunu, West Minahasa.

oai:ojs.ejournal.undip.ac.id:article/33766 2022-05-19T09:28:31Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/33766 2022-05-19T09:28:31Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 4 (2020): Ilmu Kelautan; 173-178 Redjeki, Sri; Departemen Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Zainuri, Muhammad; Departemen Oseanografi, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Widowati, Ita; Departemen Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Ghofar, Abdul; Departemen Manajemen Sumberdaya Perairan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Agus, Elsa Lusia; Departemen Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Mustagfirin, Mustagfirin; Departemen Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Ayodya, Fabian Panji; Departemen Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Abbey, Michael; National Oceanic and Atmospheric Administration 2020-11-26 09:22:19 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/33766 Betahwalang; Larvae; Portunus pelagicus; distribution; conservation area en Betahwalang has been one of the main contributors to the Blue Swimming Crab (BSC, Portunus pelagicus) fisheries production in Central Java Province. Recruitment of the BSC depends to a large extend on the abundance of crab larvae. However, information on larval distribution of the crab affecting the recruitment to the fishery, fishery management and decision making to support crab conservation in Betahwalang area has been lacking.  The purpose of this study is to describe the spatial and temporal distribution of BSC larvae in the crab conservation area, to identify the larval stage most commonly occurs in the conservation area, and to develop process of decision making to managing conservation areas. This study was conducted in twelve months, starting from January until December 2018. The spatial distribution of the crab larvae was analyzed and mapped by means of SPSS and ArcGIS. The results of this study indicate that the crab larvae occur in the conservation area throughout the year.  The highest larval abundance of the crab occurs in May, September, and November. The most commonly found crab larval stages were megalopa. As megalopa and crablet stages are relatively much more active and closer to the adult form, their occurrence in the conservation area and throughout the year of 2018 suggests the existence of continuous support to the Blue Swimming Crab recruitment for the following year. The spatial and temporal distribution of the larvae were influenced by oceanographic parameters including temperature, nitrate and phosphate, which were associated with monsoonal changes in the Java Sea.

oai:ojs.ejournal.undip.ac.id:article/7098 2017-08-19T22:44:20Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/7098 2017-08-19T22:44:20Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 2 (2013): Ilmu Kelautan; 112-118 Hartati, Retno; Marine Science Department, Faculty of Fisheries and Marine Science, Diponegoro University. Jl. Prof.Dr. Soedarto, Tembalang, Semarang, Indonesia. 50275 HP: 081325682512 Widianingsih, Widianingsih; Marine Science Department, Faculty of Fisheries and Marine Science, Diponegoro University. Jl. Prof.Dr. Soedarto, Tembalang, Semarang, Indonesia. 50275 Purwati, Pradina; Research Centre for Oceanography – Lembaga Ilmu Pengetahuan Indonesia Jl. Pasir Putih 1, Ancol Timur, Jakarta Utara, Indonesia. 14430 2013-06-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/7098 en Terdapat dua sistem reproduksi pada teripang, yaitu seksual dan aseksual. Fission, sebagai salah satu cara reproduksi aseksual, adalah kemampuan alami teripang untuk membelah tubuhnya menjadi dua bagain dan masing-masing bagian dapat beregenerasi menjadi individu baru. Fenomena ini memberikan kemungkinan melakukan simulasi fission untuk memperbanyak benih teripang.  Penelitian ini bertujuan untuk menganalisa kemampuan fission dua species Stichopudidae (Stichopus hermanii and S. chloronotus) dari Karimunjawa. Simulasi fission dilakukan dengan mengikat teripang uji dengan karet pentil dan meletakkan individu teripang yang telah diikat pada keranjang yang digantung pada permukaan laut. Pengamatan fission dilakukan pada jam ke 12, 24 dan 48. Ketika telah terjadi fission dan luka tertutup, teripang uji tetap berada di keranjang uji dan teripang tidak diberi pakan. Perlakuan berlanjut sampai penyembuhan secara morfologis terjadi dengan sempurna. Waktu terjadinya regenerasi setelah luka sembuh dicatat sebagai data pengamatan.  Hasil penelitian menunjukkan bahwa simulasi fisssion dapat dilakukan pada species teripang Stichopudidae.  Setelah proses fission selesai, dinding tubuh pada lokasi fission menjadi basah atau berlendir selama satu sampai dua jam. Pada pagi hari berikutnya, dinding tubuh akan nampak normal konsistensinya dan luka telah tertutup. Proses fission berlangsung selama beberapa jam sampai dua haridan tanda-tanda regenerasi timbul mulai dua sampai tiga minggu setelah fission.  Waktu generasi S. hermanii terjadi lebih cepat (2 minggu setelah fission) daripada S. chloronotus. Kata kunci : fission, produksi benih, stichopudidae, Pulau Karimunjawa  There are two reproduction systems in seacucumber, i.e. sexual and asexual. Fission, as a way of asexual reproduction, is natural seacucumber ability to split their body into two part, and this natural fenomenon give possibility to conduct fission stimulation as seacucumber propagation. Present works are aimed to analyse fission capability of two Stichopudidae species of sea cucumber (Stichopus hermanii and S. chloronotus) from Karimunjawa Islands. Fission stimulation by rubber band tied was done in basket hanged on the sea cage. The fission was observed for 12, 24 and 48 hours. When fission occurred and wound recovered the sea cucumber were still kept in the basket and no food was added. This treatment continued until morphological recovery was completed. The time regeneration occurred after wounds recover was recorded. The result of present work revealed that stichopudidae species showed very good response to fission stimulation. After the entire process of fission, the bodywall at the fission site remained a liquid or mucus like consistency for at least two more hours. The following morning, the bodywall had its normal consistency and the wounds at both ends were nearly entirely closed. The fission process took several hours to two days and signs of regeneration appeared two to five weeks after fission. Fission simulation give shorter regeneration time for S. hermanii (2 week) than S. chloronatus. Keywords: fission, seed production, stichopudidae, Karimunjawa island

oai:ojs.ejournal.undip.ac.id:article/54074 2024-10-04T07:32:43Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/54074 2024-10-04T07:32:43Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 2 (2024): Ilmu Kelautan; 273-284 Alfaris, Lulut; Department of Marine Technology, Politeknik Kelautan dan Perikanan Pangandaran Firdaus, Anas Noor; Department of Marine Technology, Politeknik Kelautan dan Perikanan Pangandaran Nyuswantoro, Ukta Indra; Department of Structural Engineering, Asiatek Energi Mitratama Siagian, Ruben Cornelius; Departement of Physics, Faculty of Mathematics and Natural Science, Universuitas Negeri Medan Muhammad, Aldi Cahya; Department of Electrical and Electronic Engineering, Islamic University of Bangladesh Hassan, Rohana; Faculty of Civil Engineering, Universiti Teknologi MARA Aunzo, Jr., Rodulfo T.; Assistant Professor IV, Visayas State University Ariefka, Reza; Research Institute, STKIP Muhammadiyah OKU Timur 2024-06-25 16:15:59 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/54074 Forecasting; Machine learning methods; Model performance metrics; Predictive accuracy en This research investigates the comparative predictive efficacy of two leading machine learning methodologies, specifically the XGBoost and Random Forest models, in estimating ocean temperature dynamics in the TS Gulf Stream and Labrador Current regions along the east coast of North America. Using annual temperature datasets and relevant oceanographic parameters, the data is carefully processed, cleaned and sorted into training and test subsets via the RStudio Platform. The performance evaluation model is carried out using predetermined machine learning assessment criteria, including Mean Absolute Error (MAE), Root Mean Squared Error (RMSE), Mean Squared Error (MSE), and R-squared. The results show the superiority of the XGBoost model compared to Random Forest in terms of prediction accuracy and minimizing prediction errors. The XGBoost model shows lower MSE values and higher R-squared values than the Random Forest model, indicating its better capacity in explaining data variations. XGBoost consistently provides more accurate predictions and shows higher sensitivity in identifying important factors influencing ocean temperature fluctuations than Random Forest. This research significantly improves understanding and prognostic capabilities regarding ocean temperature dynamics in the TS Gulf Stream and Labrador Current regions. Empirical evidence underlines the efficacy of the XGBoost model in predicting ocean temperatures in the studied region. Continuous model evaluation and parameter refinement for both methodologies is critical to establishing standards for optimal prediction performance. The findings of this research have implications for the fields of oceanography and climate science, and offer potential pathways to comprehensively understand and mitigate the impacts of climate change on marine ecosystems.

oai:ojs.ejournal.undip.ac.id:article/1626 2014-12-30T01:00:58Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1626 2014-12-30T01:00:58Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 4 (2009): Jurnal Ilmu Kelautan; 234-241 Suparno, Suparno; Fakultas Perikanan dan Ilmu Kelautan Universitas Bung Hatta Padang, Mahasiswa Pascasarjana IPB, Bogor Telp 081315887679; E-mail address: suparnopranoto@yahoo.com Soedharma, Dedi; Departemen Ilmu dan Teknologi kelautan, Fakultas Perikanan dan Ilmu Kelautan IPB, Bogor Zamani, Neviaty Putri; Departemen Ilmu dan Teknologi kelautan, Fakultas Perikanan dan Ilmu Kelautan IPB, Bogor Rachmat, Rachmaniar; Pusat Penelitian Oseanografi LIPI, Jakarta 2012-02-06 07:22:37 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1626 id Spons merupakan hewan laut yang dapat menghasilkan senyawa bioaktif yang bermanfaat sebagai antibiotik, antijamur, anti virus, anti kanker, anti inflamasi, dan antioksidan. Tujuan dari penelitian ini adalah mengetahui pertumbuhan dan tingkat kelangsungan hidup spons Petrosia nigricans yang ditransplantasikan&nbsp; pada kondisi perairan yang berbeda. Metode transplantasi spons yang dipakai adalah fragmentasi (menanam potonganpotongan spons). Hasil penelitian menunjukkan bahwa pertumbuhan dan kelangsungan hidup spons dipengaruhi oleh perbedaan kualitas lingkungan perairan di Pulau Pari dan Pramuka. Rata-rata&nbsp; pertumbuhan mutlak spons Petrosia nigricans pada kedalaman 7m dan 15m di Pulau Pari masing-masing sebesar 793.26 cm3, 936.60 cm3 dan di Pulau Pramuka sebesar 493.19 cm3,&nbsp; dan 590.02 cm3. Rata-rata kelangsungan hidup spons Petrosia nigricans berkisar 90 - 100%. Kata kunci : Pertumbuhan, kelangsungan hidup, transplantasi, Petrosian nigricans&nbsp;Sponges are marine organisms which known to be able to produce bioactive metabolite as antibiotic, antifungal, antivirus, anticancer, antiinflammation, antioxidant. The aim of the research is to determine growth and survival rate of sponge Petrosia nigricans transplanted in different waters condition. Sponge transplantation use fragmentation method (by plant fragment of sponge). The result shows that growth and survival rate of sponge affected by defferences of waters quality in Pramuka and Pari Islands. Average of absolut growth&nbsp; sponge Petrosia nigricans on 7m and 15m depth in Pari Island are 793.26 cm3, 936.60 cm3 respectively and In Pramuka Island are 493.19 cm3, 590.02 cm3 respectively. Average of survival rate sponge Petrosia nigricans is 90 -100 %. Key words : growth, survival rate,&nbsp; transplantation, Petrosian nigricans

oai:ojs.ejournal.undip.ac.id:article/16909 2021-10-13T03:57:22Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/16909 2021-10-13T03:57:22Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 2 (2018): Ilmu Kelautan; 69-80 Wijayanti, Diah Permata; Marone Science Department, Diponegoro University Hidaka, Michio; Chemistry, Biology and Marine Science Department, University of the Ryukyus 2018-06-21 21:26:41 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/16909 en Various allogeneic responses have been characterized in stony corals. The responses were thought to be genetically control. However, very little is known about the genetic mechanism of allorecognition in corals. Therefore, the contact reaction between parent-offspring and between siblings of the coral Pocillopora damicornis has been studied. Three types of contact reactions were observed: between young colonies, between adult and young colonies, and between adult colonies.  Siblings, which were primary polyps or young colonies derived from the same broodparent, invariably fused. All but one pair of parent-offspring grafts exhibited fusion. However, some pairs of young colonies derived from the same two broodparents showed a different contact response than did the broodparents when their branch tips were paired. When the same pairs of the young colonies were repeated to contact at different age, most pairs yielded the same results. Together with the findings that young colonies were able to recognize their partner less than 1 month after the initial contact, we suggest that contact reaction in coral and time needed for the stable reaction are most probably under genetic control. Keywords: coral, young colonies, reproduction, parent-offspring relationship, histocompatibility 

oai:ojs.ejournal.undip.ac.id:article/2327 2012-03-03T01:51:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2327 2012-03-03T01:51:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 4 (2007): Jurnal Ilmu Kelautan; 187-192 Simanjuntak, Marojahan; Bidang Dinamika Laut, Pusat Penelitian Oseanografi-LIPI Jl, Pasir Putih 1, Telp. 021-64713850, Jakarta 14430, Fax: (021) 64711948 Email: ojak_sm@yahoo.com; Hp: 081385597038 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2327 en Telah dilakukan sebanyak 3 (tiga) kali pengamatan kadar oksigen terlarut yaitu pada bulan April mewakili musim peralihan I, Agustus mewakili musim timur dan Oktober 2001 mewakili musim peralihan II di perairan Teluk Banten.&nbsp; Contoh air laut diambil dengan menggunakan botol Nansen dari 20 stasiun pada permukaan (0 meter), 10 meter dan 25 meter. Perhitungan oksigen terlarut yang diperoleh dengan nilai suhu dan salinitas dikonversikan menjadi nilai Apparent Oxygen Utilization (AOU). Di lapisan permukaan nilai AOU yang positip diperoleh 95 % dan negatip 5 % pada bulan April dan Agustus sedangkan pada bulan Oktober nilai AOU yang positip 90 % dan negatip 10 %. Pada lapisan tengah dan dasar nilai AOU-nya negatip&nbsp; hampir 100 %.. Dari hasil penelitian diperoleh pemakaian oksigen dalam bentuk AOU oleh aktivitas biologi dan oksidasi zat-zat organik lebih rendah dibandingkan dengan produksi oksigen oleh proses fotosintetis. Secara keseluruhan, nilai AOU berkisar antara - 1,53 &ndash; 0,61 mg/l. Pemakaian oksigen terlarut di lapisan permukaan dalam bentuk AOU berkisar antara 0,00 &ndash; 0,61 mg/l. Konsumsi oksigen terlarut yang tertinggi di lapisan permukaan (0,61 mg/l) terjadi pada musim peralihan I (April). Nilai negatip AOU yang menunjukkan terjadinya produksi oksigen oleh proses fotosintetis yang terrendah (- 1,53 mg/l) di peroleh pada musim peralihan II (Oktoberl) dekat dasar perairan. Kata kunci: oksigen terlarut, apparent oxygen utilization (AOU), Teluk Banten. &nbsp;Observation of dissolved oxygen concentration have been conducted 3 times i.e. during April represented season monsoon I, August represented east season and October 2001 represented season monsoon II in the Banten Bay Waters. Example of seawater were taken using Nansen Bottle from 20 stations at surface (0 meter), 10 meter and 25 meter depth. Conversion of dissolved oxygen, temperature and salinity to Apparent Oxygen Utilization (AOU). Highest values of AOU (0,61 mg/l) was obtained at surface layer and lowest (- 1,53 mg/l) was obtained at near bottom layer, both were during in April. In surface layer value of AOU which is positive obtained 95 % and negative 5 % in April and August while in October assess AOU which is positive 90 % and negative 10 %. At bottom and middle layer of value of AOU negative almost 100 %. From result of research obtained by usage of oxygen in the form of AOU by biological activity and compared to lower an organic matters oxidation of oxygen production by photosynthesis process. In general, the values of AOU range from - 1,53 - 0,61 mg/l. Usage of dissolved oxygen in surface layer in the form of AOU range from 0.00 &ndash; 0.61 mg/l. Highest dissolved oxygen consumption in surface layer (0.61 mg/l) happened at season monsoon I (April). Assess AOU negative showing the happening of oxygen production by highest photosynthesis process (- 1.53 mg/l) in obtaining at season monsoon I (April) at near bottom. Key words:&nbsp; dissolved oxygen, apparent oxygen utilization (AOU), Banten Bay

oai:ojs.ejournal.undip.ac.id:article/39998 2022-02-13T04:23:18Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/39998 2022-02-13T04:23:18Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 4 (2021): Ilmu Kelautan; 237-246 Widyananto, Prastyo Abi; Department Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Magister Program of Marine Science, , Faculty of Fisheries and Marine Science, Universitas Diponegoro Muchlissin, Sakti Imam; Magister Program of Marine Science, , Faculty of Fisheries and Marine Science, Universitas Diponegoro Sabdono, Agus; Department Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Yulianto, Bambang; Department Marine Science, Faculty of Fisheries and Marine Science, Universitas Diponegoro Hamid, Fauziah Shahul; Institute of Biological Science, Faculty of Science, University of Malaya Radjasa, Ocky Karna; Magister Program of Marine Science, , Faculty of Fisheries and Marine Science, Universitas Diponegoro Deputy of Earth Sciences, Indonesia Institute of Science 2021-12-06 01:29:28 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/39998 Low Density Polyethylene microplastics; biodegradation; associated-bacteria; coral; Karimunjawa en Polyethylene is a plastic material that was globally produced and is well known as a non-degradable pollutant product. Plastic pollution, primarily microplastics, have been distributed to coral reef ecosystems, where these areas are ecosystems with high productivity. Karimunjawa National Park in Indonesia is one of the protected areas for coral reef ecosystem habitat in Central Java, threatened by microplastic contamination. Recent studies have shown that coral-associated bacteria have an adequate ability to degrade marine pollutant materials. No one has reported that the use of indigenous coral-associated bacteria has the potential for microplastic biodegradation, especially low-density polyethylene microplastic materials. Hence, the objective of this study was to find the potential of microplastic biodegradation agents derived from coral-associated bacteria in Karimunjawa National Park area. Various coral life-forms were isolated in July 2020 from conservation areas and areas with anthropogenic influences. Bacterial isolates were screened using tributyrin and polycaprolactone as substrates to reveal potential microplastic degradation enzymes. The total isolation results obtained 92 bacterial isolates, and then from the result of enzyme screening, there were 7 active bacteria and only 1 bacteria that potential to degrade polyethylene. LBC 1 showed that strain could degrade by 2.25±0.0684 % low-density polyethylene microplastic pellet by incubating bacterial growth until the stationary phase. Identification of LBC 1 strain was carried out by extracting DNA and bacterial 16S rRNA sequences. Bacterial gene identification refers to Bacillus paramycoides with a similarity level in the National Center Biotechnology Information database of 99.44%. These results prove that hard coral association bacteria can degrade low-density polyethylene microplastics.

oai:ojs.ejournal.undip.ac.id:article/221 2014-12-23T07:52:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/221 2014-12-23T07:52:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 1 (2009): Jurnal Ilmu Kelautan; 50-59 Riniatsih, Ita Wibowo, Edy 2010-10-22 22:16:44 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/221 id Gastropoda dan bivalvia memiliki distribusi yang luas dalam ruang dan waktu, kebanyakan melimpah sebagai individu. Gastropoda dan bivalvia umumnya berada di laut, hidup di sepanjang pantai atau diperairan dangkal.&nbsp;Penelitian ini bertujuan untuk mengetahui pengaruh tekstur substrat dasar dan kandungan bahan organik sebagai penentu keberadaan gastropoda dan bivalvia di Pantai Sluke, Kabupaten Rembang di bagi menjadi 5 lokasi dengan jarak masing-masing lokasi 100 m sepanjanggaris pantai. Tiap lokasi dibagi menjadi 5 stasiun dengan jarakmasing-masingstasiun 100 m ke arah laut. Pengambilan sampel dilakukan dalam transek kuadran 1x1 m, selanjutnya sampel dibersihkan dan diawetkan untuk kemudian dilakukan identifikasi. Hasil penelitian menunjukkan bahwa gastropoda dan bivalvia paling banyak ditemukan pada stasiun B pada jarak 200 m dari pantai, sedangkan pada stasiun A3,A5,C3,D3, dan E2 tidak ditemukan adanya gastropoda dan bivalvia. Spesies yang paling banyak ditemukan adalah&nbsp;Nassarius siquijorensis&nbsp;dari kelas gastropoda dengan jumlah 62 spesies.&nbsp;Untuk&nbsp;Trachycardium rugosum&nbsp;dari kelas bivalvia adalah spesies yang paling sedikit ditemukan. Kandungan&nbsp;bahan organik pada pantai Sluke memiliki perbedaan yang sangat mencolok. Kandungan bahan organik tertinggi&nbsp;yaitu 22,38 % tergolong dalam kandungan bahan organik tinggi yang terdapat pada stasiun C5, sedangkan kandungan bahan organik terendah yaitu 2,65 % tergolong dalam kandungan bahan organik sangat rendah yang terdapat pada stasiun El. Untuk tekstur substrat dasar rata-rata dari stasiun 1 pada semua lokasi mempunyai substrat dasar pasir. Sedangkan stasiun 2 pada semua lokasi didominasi oleh substrat dasar pasir berlumpur. Untuk stasiun 3, 4, dan 5 pada semua lokasi, substrat dasar yang mendominasi adalah lumpur berpasir.

oai:ojs.ejournal.undip.ac.id:article/8517 2020-04-17T06:00:45Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/8517 2020-04-17T06:00:45Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 3 (2014): Ilmu Kelautan; 149-158 Susilaningsih, Dwi; Research Centre for Biotechnology, Indonesia Institute of Sciences Jl. Raya Bogor Km 46 Cibinong Bogor, 16911 Indonesia Email: dwisusilaningsih@yahoo.com.sg 2014-09-02 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/8517 en Spesies Dinophyte mempunyai habitat dari kutub, perairan tropis, tetapi semakin berlimpah di perairan tropis atau hangat. Dinophyte diduga sebagai penyebab terjadinya "red tide" sehingga nampak berwarna kuning kemerahan di laut ketikan malam hari disebabkan aktivitas bioluminescence.Penelitian ini menggunakan Dinophyte yang diisolasi dari pantai dan sampel air yang diperoleh dari di Prefektur Iwate, Jepang. Tujuan dari penelitian ini adalah untuk mengetahui taksonomi yang menyebabkan blooming. Spesies ini memiliki karakter yang spesifik bernbentuk oval (panjang 20-30 μm dan lebar 1-20 μm), kloroplas berwarna kuning, nukleus yang besar, dua flagel yang berbeda, yang salah satunya disebut flagellum transfer, tidak memiliki selaput tengah yang, ornament sel yang indah "theca"dengan tulang belakang. Berdasarkan hasil squensing pada 18 S rDNA, Dinophyte mempunyai kesamaan dengan strain Prorocentrum MBIC11147 (100%), Di masa yang akan datang penelitian Procentrum sp. bisa menggunakan sebagai model squensing, perilaku pasang mikroalga. Kata kunci: alga, Dinophyte, karakterisasi, isolation, Prorocentrum, red tide Dinophyte species inhabit from polar, temperate to tropical waters, but tend to be more abundant in tropical or warm waters. The Dinophytes is suspected as one of the genera causing red tide in the sea with their yellow-redish colour that make the sea glows in the night because of their bioluminescence activity. In this work, the Dinophyte was isolated from offshore, and water sample collected in Iwate Prefecture, Japan. Purposes of the studies were for understanding the taxonomic features in particular of the dinophytes that usually occur in blooming areas. The species has specific characters, such as oval shape ( 20-30 μm long and 1-20 μm wide), yellow chloroplast, large nucleus, possesses two different flagellas which one of them is specific called transfer flagellum, no middle furrow and beautiful ornament cell covering (theca) with spine. Based on the partial sequencing of the 18 S rDNA, the Dinophyte is precisely same as the reference strain Prorocentrum MBIC11147 (100%), which was determined as Prorocentrum sp. In the future, this study could be uses as model of sequel behavior of the microalgal red tide. Keywords: algae, Dinophyte, characterization, isolation, Prorocentrum, red tide

oai:ojs.ejournal.undip.ac.id:article/69768 2025-06-15T08:04:10Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/69768 2025-06-15T08:04:10Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 1 (2025): Ilmu Kelautan; 43-52 Sari, Dinda Lintang; Faculty of Fisheries and Marine Science, Universitas Diponegoro Haryadi, Desrina; Department of Aquaculture, Faculty Fisheries and Marine Science, Universitas Diponegoro Mile, Haeruddin Daeng; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Universitas Diponegoro 2025-03-08 15:58:59 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/69768 WSSV; PCR; Penaeus vannamei; Tegillarca granosa; Scylla serrata en The White Spot Syndrome Virus (WSSV) is a generalist virus and an important pathogen of white leg shrimp (Penaeus vannamei) farming in Indonesia. The shrimp farming system with inadequate biosecurity like the traditional polyculture system may facilitate the virus to infect the invertebrate live in the pond and expand its host and vector range. White leg shrimp (P. vannamei), blood cockles (Tegillarca granosa), and mud crabs (Scylla serrata) are widely used in polyculture aquaculture. Therefore, it is necessary to determine the occurrence of WSSV in these organisms. The main aim of this research was to determine whether WSSV existed in blood cockles and crabs cultivated with White leg shrimp. The survey was conducted in polyculture ponds in Morosari village and the surrounding area. The characteristic of both ponds was the sandy mud bottom and managed using traditional methods and there were no biosecurity measures implemented. A total of 33 organisms were collected, consisting of 20 blood cockles (T. granosa), 10 white leg shrimp (P. vannamei) and 3 mud crabs (S. serrata) were obtained from two traditional polyculture pond and coastal area of Morosari, Bedono, Demak. WSSV was detected using first step and nested Polymerase Chain Reaction (PCR). WSSV DNA from selected specimens were sequenced and aligned to the published WSSV sequence in the gene bank (NCBI) using BLAST application.  The result showed that WSSV existed in the three organisms tested in Morosari area, using first step and nested PCR. There is no clinical sign appearance on each sample. Alignment results showed 100 % identity with published VP28 WSSV protein.  All results concluded that WSSV was detected simultaneously in shrimp, blood cockle and crab in the study area.

oai:ojs.ejournal.undip.ac.id:article/1955 2017-08-19T22:46:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1955 2017-08-19T22:46:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 3 (2011): Ilmu Kelautan; 125-134 Wijaya, Nirmalasari Idha; Sekolah Tinggi Ilmu Pertanian Kutai Timur, Jl. Soekarno-Hatta, no. 2, Sangatta, Telp: 08125502753 email:nirmala_idha@yahoo.co.id Pratiwi, Rianta; Pusat Penelitian Oseanografi - LIPI, Jakarta, email: r_pratiwi_99@yahoo.com 2012-02-17 06:32:10 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1955 id Perairan Kepulauan Matasiri dipengaruhi oleh daratan Pulau Kalimantan (mainland) dan Selat Makassar.Kedua pengaruh&nbsp; tersebut&nbsp; menyebabkan&nbsp; adanya&nbsp; perbedaan&nbsp; karakteristik&nbsp; habitat&nbsp; yang&nbsp; diduga&nbsp; berdampak&nbsp; pada distribusi spasial krustasea.Metode deskriptif diterapkan pada penelitian ini. Krustasea disampling dengan metode sapuan menggunakan alat tangkap trawl demersal pada 4 stasiun yaitu, Stasiun 1, 2, 3 dan 4. Parameter fisika kimia perairan (meliputi salinitas, suhu, kedalaman, kecerahan, kekeruhan, TSS, oksigen terlarut,&nbsp; pH,&nbsp; phospat,&nbsp; nitrogen,&nbsp; dan&nbsp; silikat)&nbsp; semua&nbsp; diukur&nbsp; dengan&nbsp; menggunakan&nbsp; alat&nbsp; CTD (Conductivy Temperature Depth) 911 Plus. Pengukuran pH menggunakan SBE (Sea Bird Electronik) 18 pH, kecerahan dengan alat CStar Transmissometer dan kekeruhan menggunakan OBS3 (Optical Backscatter Sensor).Data dianalisis&nbsp; menggunakan&nbsp; metode&nbsp; statitik&nbsp; multivariabel&nbsp; yang&nbsp; didasarkan&nbsp; pada&nbsp; Analisis&nbsp; Komponen&nbsp; Utama (Principal Component Analysis, PCA) dan Analisis Korelasi (Corresponden Analysis, CA).Hasil analisis PCA menunjukkan bahwa habitat dapat dikelompokan menjadi tiga karakter, yaitu kelompok habitat dekat estuaria (Stasiun1 dan 4), kelompok habitat sebelah utara Kepulauan Matasiri (Stasiun 2) dan kelompok habitat sebelah selatan Kepulauan Matasiri (Stasiun 3).Kelimpahan krustasea sangat dipengaruhi oleh parameter salinitas, kecerahan, dan kedalaman. Hasil analisis CA menunjukkan bahwa terdapat perbedaan distribusi spasial jenis krustasea.&nbsp; Beberapa&nbsp; famili krustasea&nbsp; seperti&nbsp; Paguridae&nbsp; dan&nbsp; Dromiidae&nbsp; hanya&nbsp; ditemukan&nbsp; di&nbsp; Stasiun 4, sedangkan famili Alpheidae, Parthenopidae, dan Podophthalmidae hanya dapat ditemukan di Stasiun 3. Hal ini menunjukkan perbedaan karakteristik habitat mempengaruhi kelimpahan jenis krustasea tertentu. &nbsp;Kata kunci: krustasea, kelimpahan, karakteristik habitat, distribusi spasial&nbsp;The Matasiri Island waters influenced by the mainland island of Borneo and the Makassar Strait. Both impacts cause the differences of habitat characteristics of Matasiri Islands waters, which affects the differences of spatial distribution of crustacean. Descriptive methods applied in this study. Crustaceans sampled with a&nbsp; sweep method using demersal trawl gear in the four stations are: Station 1, 2, 3 and 4. Aquatic chemical physics parameters (including salinity, temperature, depth, brightness, turbidity, TSS, dissolved oxygen, pH, phosphate, nitrogen, and silicate) were all measured using a CTD (Conductivy Temperature Depth) 911 Plus. Measurement of pH using SBE (Sea Bird Electronic) 18 pH, the brightness using CStar Transmissometer and turbidityusing OBS3 (Optical Backscatter Sensor).Datawere analyzed using multivariable statistic method based on the Main Component Analysis (Principal Component&nbsp; Analysis, PCA) and Correlation Analysis (Corresponden Analysis,CA). The results of PCA analysis showed that the habitat can be grouped into three characters, namelynear the estuary habitat groups (Stations 1 and 4), the habitat north of Matasiri Islands (station2) and the habitat south of Matasiri Islands (station3). Abundance of crustaceans is strongly influenced by the parameters of salinity, brightness, and depth. CA analysis results indicate that there are differences in the spatial distribution of crustacean species.&nbsp; Several families of crustaceans such as Paguridae and Dromiidae only found in&nbsp; the Station 4,while the family Alpheidae, Parthenopidae, and Podophthalmidae only be found at Station 3. This suggests differences in habitat characteristics affect the abundance of certain crustaceans. &nbsp;Key words: Crustacea, abundance, habitat characteristics, spatial distribution

oai:ojs.ejournal.undip.ac.id:article/19367 2019-03-26T05:30:01Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/19367 2019-03-26T05:30:01Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 3 (2002): Jurnal Ilmu Kelautan; 187-194 Yusup, Muh.; Jurusan Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro 2009-03-04 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/19367 en Penelitian ini dilaksanakan dengan tujuan untuk mengkaji kondisi kualitas air, struktur komunitas makrozoobenthos, dan stabilitas ekosistem perairan di muara sungai Karanganyar, Tugu, Semarang. Metode penelitian yang digunakan adalah studi kasus. Sampling air dan sedimen dilakukan sebanyak tiga kali, dengan interval 14 hari. Penelitian dilaksanakan pada bulan Maret - Oktober 2001 di muara sungai Karanganyar, Tugu, Semarang. Hasil pengukuran parameter fisika-kimia air menunjukkan bahwa beberapa parameter yakni, kekeruhan, COD, dan unsur-unsur logam berat Cu, Cd, Pb, Ni telah melampaui Baku Mutu Air Laut. Nilai IMLP antara 56,858-66,121. Berdasarkan nilal ini, dikatakan bahwa kualitas perairan di daerah penelitian termasuk ke dalam kriteria sedang. Nilai Indeks Keanekaregaman jenis (H') berkisar dari rendah sampai sedang yaitu antara 1,132-2,10. Sedangkan nilai indeks keseragaman jenisnya (E) relative tinggi, yakni antara 0,80 sampai 0,95. Kondisi ekosistem yang tampak membaik ke arah yang stabil dari waktu ke waktu adalah stasiun I, II, dan V, ditunjukkan oleh perubahan model dari Motomura ke Preston. Sedangkan kondisi lingkungan yang tampak semakin memburuk ke arah yang tidak stabil adalah stasiun III dan IV, ditunjukkan oleh perubahan model dari Preston ke Motomura.Kata kunci : kualitas perairan; ekosistem; makrozoobenthos  The research was done to investigate the condition of water quality, community structure of macrozoobenthos, and ecosystem stability of coastal waters of estuarine of river Karanganyar. The method used in the present research was case study. Sampling was done three times, with time interval between 14 days. The research was done from March until October, 2001 at estuarine of Karanganyarr river, of Tugu coastal waters, Semarang City. Based on the result of measurement of physical-chemical parameters of water showed that several parameters include: muddines, COD and heavy metal elements Cu, Cd, Pb, Ni have passed over sea water quality standard. The results of the research showed that the waters environmental quality index (IMLP) range from 56,858 until 66,121. Based on this value, the water quality in the research area include to middle criteria. The diversity index (H`) range from low to middle that is between 1,132-2,10. Whereas the equatability index (E) was high, that that is between 0,80-0,95. The condition of environmental quality in the research area which seems to stable time to time were station I, II and V which is shown by the changed of model from Motomura to Preston. Whereas the condition of environmental quality which seems to fall into unstable way, were station III and IV, which is shown by changed of model from Preston to Motomura.Keywords: water quality; ecosystem; makrozoobenthos

oai:ojs.ejournal.undip.ac.id:article/2365 2012-03-04T14:48:48Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/2365 2012-03-04T14:48:48Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 2 (2004): Jurnal Ilmu Kelautan; 101-107 Satriadi, Alfi; Jurusan Ilmu Kelautan, FPIK, Universitas Diponegoro Kampus Tembalang Semarang, Telp/Fax : (024)7474698 Widada, Sugeng; Jurusan Ilmu Kelautan, FPIK, Universitas Diponegoro Kampus Tembalang Semarang, Telp/Fax : (024)7474698 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/2365 en Muara sungai dengan karakteristiknya yang khas merupakan tempat pengeluaran debit sungai yang membawa material sedimen yang disuplai dari darat ke laut. Sedimen akan berada di perairan dalam bentuk terlarut maupun tersuspensi. Proses transpor sedimen ini dipengaruhi oleh proses-proses fisika oseanografi yang terjadi di lautan seperti pasang surut, arus dan gelombang. Tulisan ini bertujuan untuk mengetahui konsentrasi muatan padatan tersuspensi dan faktor-faktor oseanografi yang mempengaruhi pola distribusinya di muara Sungai Bodri. Pengambilan sampel dilakukan satu minggu sekali selama satu bulan. Tiap pengambilan sampel dilaksanakan pada saat pasang dan surut, dilanjutkan analisis di laboratorium. Hasil analisis menunjukkan bahwa nilai konsentrasi muatan padatan tersuspensi relatif lebih besar pada saat pasang dibandingkan saat surut. Hal ini dimungkinkankarena adanya aktivitas pasang membawa pengaruh terhadap arus dan gelombang sehingga terjadi pengadukan sedimen di dasar perairan.Kata kunci : muatan padatan tersuspensi, pasang surut, arus, gelombangRiver mouth with its typical characteristic forms is a place for discharging the rate of flow which carries material supply from land to the sea. Sediment will stay on the shallow water in the form of dissolved and suspended load.The transportation process of sediment material is also influenced by physical oceanographic processes that happens in ocean like tide, current and wave. The aims of this research is to know the supended sediment load concentration and oceanographic factors that influence of its distributio n. Samples were taken weekly during a month at the time of tide, continued by laboratory analyses. The results showed that content of suspended sediment load at the time of high tide higher than the time of low tide because the existence of tide activity bringing influence to enough current and wave so that caused mixing of sediment in territorial water base.Key words : suspended sediment load, tide, current, wave

oai:ojs.ejournal.undip.ac.id:article/45647 2022-12-05T16:33:36Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/45647 2022-12-05T16:33:36Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 3 (2022): Ilmu Kelautan; 215-222 Muslim, Muslim; Department of Oceanography, Universitas Diponegoro Ahmadi, Sa'iyd Husayn; Department of Oceanography, Universitas Diponegoro Marwoto, Jarot; Department of Oceanography, Universitas Diponegoro Suseno, Heny; Marine Radioecology Group, Center for Radiation Safety Technology and Metrology, National Nuclear Energy Agency Aggrey, Yvette Agyiriba; Ghana Atomic Energy Commission 2022-09-03 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/45647 Dispersion model; 239/240 Pu; Hydrodynamic; Particle Tracking; East Coast of Johor en The East Coast of Johor in Malaysia is a strategic area as a candidate site for nuclear power plants. Its location is near coastal area and is therefore convenient to use seawater as a source of cooling for power plants. This makes the East Malaysia waters, and their surroundings stand a high risk of direct radioactive contamination, especially in event of an accident. Pu is a non-conservative or reactive radionuclide that easily settles with particles and has high radiotoxicity and radiochemistry, making it very dangerous. The purpose of this study was to determine the distribution patterns of 239/240Pu releases in the waters of East Malaysia and the surrounding waters. To determine the affected areas due to 239/240Pu pollution using MIKE flow flexible mesh module and particle tracking module. The magnitude of 239/240Pu used in this model is based on the disaster in Fukushima Daiichi in 2011. This research can be used as a mitigation of 239/240Pu pollution when a nuclear reactor disaster occurs in the area around Indonesia's territorial border. Discharge of 239/240Pu was simulated during the west and east monsoons season which result in the distribution pattern following the seasonal flow pattern. During the west monsoon, the dispersion speed of 239/240Pu is four times faster than the east monsoon. The 239/240Pu distribution is predominantly towards the south, however, the contaminated area was only occurred on the coast of Johor and does not extend to the waters of Indonesia.

oai:ojs.ejournal.undip.ac.id:article/550 2020-10-25T22:32:06Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/550 2020-10-25T22:32:06Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 13, No 2 (2008): Jurnal Ilmu Kelautan; 113-120 Handiani, Dian Noor Ningsih, Nining Sari Sukarmadijaya, Harum 2010-11-12 11:27:55 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/550 id Pemodelan matematik transpor&nbsp;2 dimensi (2D) telah digunakan untuk mempelajari penyebaran logam&nbsp;berat&nbsp;Cobalt (Co)&nbsp;di&nbsp;perairan Pantai&nbsp;Tanjung Gerem, Cilegon. Hasil model&nbsp;transpor menunjukkan arah penyebaran&nbsp;cobalt dipengaruhi oleh pola&nbsp;sirkulasi arus dan&nbsp;besarnya&nbsp;debit konsentrasi cobaltyang masuk ke&nbsp;perairan.&nbsp;Hasil model menunjukkan, penyebaran&nbsp;cobalt pada kondisi&nbsp;pasut purnama dan&nbsp;perbani saat air pasang menuju&nbsp;surut cenderung menyebar&nbsp;ke arah utara&nbsp;dan&nbsp;saat air&nbsp;surut&nbsp;menuju pasang cenderung&nbsp;menyebar ke arah&nbsp;selatan&nbsp;dari sumber. Kisaran konsentrasi cobalt pada&nbsp;kondisi&nbsp;pasut purnama 0,072&nbsp;-&nbsp;0,074&nbsp;mg/l dan pasut&nbsp;perbani sekitar 0,127&nbsp;-&nbsp;0,129 mg/l.&nbsp;Berdasarkan hasil pengukuran lapangan dan&nbsp;simulasi model, diketahui&nbsp;konsentrasi cobalt di perairan Tanjung Gerem sudah&nbsp;memiliki nilai diatas kondisi perairan alamiKata kunci:&nbsp;Cobalt, Model Transpor

oai:ojs.ejournal.undip.ac.id:article/10054 2022-05-23T00:34:40Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/10054 2022-05-23T00:34:40Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 4 (2014): Ilmu Kelautan; 226-232 Mashar, Ali; Program Doktor, Program Studi Pengelolaan Sumberdaya Perairan (SDP), Sekolah Pascasarjana Institut Pertanian Bogor Wardiatno, Yusli; Departemen Manajemen Sumberdaya Perairan, Fakultas Perikanan dan Ilmu Kelautan Institut Pertani Bogor Boer, Mennofatria; Departemen Manajemen Sumberdaya Perairan, Fakultas Perikanan dan Ilmu Kelautan Institut Pertani Bogor Butet, Nurlisa A.; Departemen Manajemen Sumberdaya Perairan, Fakultas Perikanan dan Ilmu Kelautan Institut Pertani Bogor Farajallah, Achmad; Departemen Biologi, Fakulitas Matematika dan Ilmu Pengetahuan Alam IPB 2014-12-01 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/10054 id Kepiting pasir atau undur-undur laut merupakan biota bentik yang hidup di pantai berpasir yang mempunyai nilai ekologi dan nilai ekonomi cukup penting. Adanya tekanan penangkapan mengharuskan adanya pengelolaan yang bijak yang disesuaikan dengan karakteristik populasi kepiting pasir. Informasi tentang jenis dan kelimpahan kepiting pasir penting untuk diketahui terlebih dahulu sebagai langkah awal upaya pengelolaan lestari kepiting pasir. Penelitian ini bertujuan untuk mengetahui komposisi jenis dan kelimpahan setiap jenis kepiting pasir yang terdapat di dua lokasi penelitian, yaitu pantai Bocor, Kabupaten Kebumen, dan pantai Bunton, Kabupaten Cilacap. Hasil penelitian menunjukkan bahwa di kedua lokasi penelitian ditemukan tiga jenis kepiting pasir, yaitu Emerita emeritus, Hippa adactyla, dan Albunea symmysta. Kepiting pasir E. emerita ditemukan dengan persentase komposisi paling besar, 70,5%-75,3%; disusul H. adactyla 22,5%-24,7%; dan A. symmysta 2,2%-4,8%. Kepiting pasir betina dijumpai dengan persentase komposisi paling tinggi, yaitu 78,2% hingga 92,8%. Kepiting pasir E. emeritus juga ditemukan dengan kelimpahan rata-rata paling tinggi di kedua lokasi penelitian, yaitu 5 dan 34 ekor/100m2. Kepiting pasir E. emeritus dan H. adactyla yang ditemukan di pantai Bunton, Cilacap mempunyai kelimpahan lebih tinggi dari yang ditemukan di pantai Bocor, Kebumen, adapun kelimpahan rata-rata Albunea symmysta relatif sama di kedua lokasi penelitian, yaitu sekitar 1 ekor/100m2. Implikasi dari hasil penelitian ini adalah diversitas kepiting pasir di pesisir selatan Jawa Tengah relatif tinggi dengan kelimpahan yang berbeda-beda yang dipengaruhi oleh intensitas aktivitas manusia di wilayah pantai berpasir. Kata kunci: Albunea symmysta, Emerita emeritus, Hippa adactyla, kelimpahan, kepiting pasir, komposisi jenis  Sand crabs or mole crabs are benthic fauna that live in the sandy beaches. They have ecological and economic value. Because of fishing pressure to this organism, it requires wise management based on the characteristics of the sand crab population. Information on the type and abundance of sand crabs is important as an initial step in sustainable management of sand crabs. This study aims to determine the species composition and abundance of each species of sand crabs. Sand crab specimens were collected from two study sites, namely Bocor beach, Kebumen, and Bunton beach, Cilacap. The results showed that in both sites found three species of sand crabs, namely Emerita emeritus, Hippa adactyla, and Albunea symmysta. E. emerita found in greatest composition percentage, 70.5% -75.3%; followed by H. adactyla 22.5% -24.7%; and A. symmysta 2.2% -4.8%. Females sand crab found in highest composition percentage, which is 78.2% to 92.8%. E. emeritus were also found in highest abundance average in both sites, 5 and 34 ind.100m-2. E. emeritus and H. adactyla were found on Bunton beach, Cilacap have abundance higher than that found on Bocor beach, Kebumen, while average abundance ofAlbunea symmysta relatively similar in both study sites, which is about 1 ind.100m-2. Implication of this research is high diversity of sand crabs relatively on the southern coast of Central Java with varying abundance that affected by intensity of human activities in the sandy beach area. Keywords: abundance, Albunea symmysta, Emerita emeritus, Hippa adactyla, sand crab, species composition

oai:ojs.ejournal.undip.ac.id:article/71427 2026-02-11T19:42:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/71427 2026-02-11T19:42:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 4 (2025): Ilmu Kelautan; 557-573 https://ejournal.undip.ac.id/index.php/ijms/article/download/71427/235167 Maulidya, Sonia Putri; Magister of Aquaculture, Faculty of Fisheries and Marine Science, Universitas Brawijaya Sari, Syarifah Hikmah Julinda; Faculty of Fisheries and Marine Science, Universitas Brawijaya Marine Resource Exploration and Management (MEXMA) Research Group, Universitas Brawijaya Fuad, Mochamad Arif Zainul; Faculty of Fisheries and Marine Science, Universitas Brawijaya Marine Resource Exploration and Management (MEXMA) Research Group, Universitas Brawijaya Iranawati, Feni; Faculty of Fisheries and Marine Science, Universitas Brawijaya Marine Resource Exploration and Management (MEXMA) Research Group, Universitas Brawijaya Matallana-Surget, Sabine; Division of Biological and Environmental Sciences, Faculty of Natural Sciences, University of Stirling Sartimbul, Aida; Faculty of Fisheries and Marine Science, Universitas Brawijaya Marine Resource Exploration and Management (MEXMA) Research Group, Universitas Brawijaya 2025-12-20 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/71427 microplastic; Muncar; environment; human health; abundance; Bali sardinella; scad en The accumulation of microplastics in fish has become a significant concern in Muncar Waters, East Java, particularly in Bali sardinella (Sardinella lemuru) and scad (Decapterus sp.), which are two of the main catch commodities. Fish samples were collected from local fishermen and analyzed in the laboratory using microscopic techniques to identify and classify microplastic particles based on type and color.  A total of 1,322 microplastic particles were detected across all samples, with the highest abundance in the flesh (39.86%), followed by gills (31.01%) and stomachs (29.12%). Fragments were the dominant microplastic type (76.70%), while fibers (15.58%) and films (6.73%) occurred in lower proportions.Purple-colored particles were the most abundant (57.75%), followed by red (11.72%) and transparent (9.00%) microplastics., indicating it is the most contaminated species. This condition is likely due to the degradation of plastic materials, which enter the marine environment through various anthropogenic activities, including improper waste disposal, fishing gear degradation, and industrial runoff. This study highlights the need for improved waste management, stricter regulations, and community awareness to mitigate marine plastic pollution, contributing to the achievement of Sustainable Development Goals (SDGs) 2, 12, 14, and 15. The findings emphasize the urgent need for enhanced waste management practices, stricter regulations on plastic pollution, and increased public awareness regarding the risks of microplastic contamination. The research underscores the significance of consuming safe and nutritious food, promoting ocean conservation, encouraging responsible plastic consumption, and preserving marine biodiversity. Further investigation is necessary to understand the long-term effects of microplastic accumulation in fish and the related risks to the food chain, particularly in human health implications and ecological sustainability.

oai:ojs.ejournal.undip.ac.id:article/634 2012-02-28T08:33:03Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/634 2012-02-28T08:33:03Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 12, No 2 (2007): Jurnal Ilmu Kelautan; 97-103 Supriyantini, Endang Widowati, Ita Ambariyanto, Ambariyanto 2012-02-28 15:15:48 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/634 id Percobaan ini dilakukan untuk mendapatkan informasi tentang pengaruh pemberian pakan alami Tetraselmischuii dan Skeletonema costatum terhadap kandungan asam lemak omega-3 (asam linolenat) pada kerang Totok Pofymesoda erosa. Kerang Totok yang digunakan berukuran 5-6 cm berasal dari perairan P. Gombol, Segara Anakan, Cilacap. Metode yang digunakan adalah eksperimental laboratorium dengan Rancangan Acak Lengkap (RAL) dengan 2 faktor dan 3 ulangan. Faktor pertama adalah pakan alami (A) dengan 3 perlakuan yaitu T. chuii dengan konsentrasi 45x Iff sel/ml(Al); S. costatum dengan konsentrasi 45 x Iff sel/ml (AZ); dan kombinasi dari kedua pakan tersebut dengan konsentrasi 22.5 x iff sel/ml T. chuii: 22.5 x Iff sel/ml S. costatum (A3). Faktor kedua yaitu periode waktu sampling (T) terdiri dari 2, 4, 6, dan 8 hari. Metode Gas Liquid Chromatography (GLC) digunakan untuk menentukan kandungan asam lemak omega-3. Semua datayang diperoleh dianalisis dengan menggunakan uji Anova dua jalur dengan SPSS. Hasil penelitian menunjukkan bahwa, jenis pakan alami berpengaruh nyata terhadap kandungan asam lemak omega-3 (asam linolenat) (Ftest= 5.409; p= 0.012). Sedangkan waktu periode sampling tidak berpengaruh nyata terhadap kandungan asam lemak linolenat pada kerang Totok P. erosa (F test= 0.795 ; p= 0.509). Perlakuan pakan alami dan waktu periode sampling memberikan pengaruh secara bersama terhadap kandungan asam lemak linolenat kerang Totok P. erosa (F test= 3.535; p= 0.012). Disimpulkan bahwa kualitas pakan, sifat dan komponen dinding sel penyusun kedua pakan alami tersebut diduga berpengaruh terhadap kandungan asam lemak linolenat pada kerang Totok P. erosa.Kata kunct: Kerang Totok Pofymesoda erosa, Tetraselmis chuii, Skeletonema costatum. Asam lemak linolenat.

oai:ojs.ejournal.undip.ac.id:article/18947 2021-10-13T01:06:24Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/18947 2021-10-13T01:06:24Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 3 (2019): Ilmu Kelautan; 127-131 Andriyono, Sapto; 1Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga Masithah, Endang Dewi; Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga Pramono, Heru; Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga Suciyono, Suciyono; Aquaculture Study Program, Faculty of Fisheries and Marine, Universitas Airlangga 2019-09-04 16:17:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/18947 Trypauchen vagina; Pangpang Bay; goby; essential area en The burrowing goby, Trypauchen vagina, is recorded for the first time from the Pangpang Bay of Banyuwangi, Indonesia. Types of fish T. vagina is a type that has not published in Indonesia. This fish was caught using trap net in waters Pangpang Bay, which is an essential area in Banyuwangi, East Java. The description of the morphology and fish habitat conditions shows that the region has a diversity of fish resources that need attention. This goby fish has a local name as fish bedhul picek due to the sense of sight on these fish as if it does not work. Eyes covered by skin and socket head section was not found their eyeballs. The body of the specimens is elongate and reddish-pink in fresh specimens in coloration. There is no barbel on the chin. Cycloid scales are present on the whole body except for the head. Muncar people commonly consume T.vagina. This fish has been food sources in several regions but uncommon at several local markets in Indonesia. The T.vagina inhabit at Pangpang Bay as the bay, which has the high primary productivity of these waters due to sufficient nutrient support. Enrichment of nutrient comes from the run-off land and also the input of the number of fishing activity (embankment). An earlier report said that this fish found in waters Banyu Asin, Palembang, Sumatra, Indonesia. It also confirms that the fish found in this study are also living in a mud substrate that is reasonably smooth with right mangrove conditions around the bay, which close to Alas Purwo National Park.

oai:ojs.ejournal.undip.ac.id:article/4694 2017-08-19T22:45:21Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/4694 2017-08-19T22:45:21Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 3 (2012): Ilmu Kelautan; 164-169 Setyati, Wilis Ari; Laboratorium Ilmu Kelautan, Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro. Kampus Tembalang, Semarang, Indonesia. Telp 024 7474698. Subagiyo, Subagiyo; Laboratorium Ilmu Kelautan, Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro. Kampus Tembalang, Semarang, Indonesia. Telp 024 7474698. 2012-09-15 00:00:00 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/4694 en Bioremediasi tambak udang memegang peranan penting dalam upaya membersihkan tambak dari bahan pencemar internal yang dihasilkan selama proses budidaya itu sendiri. Proses budidaya udang merupakan kegiatan yang potensial menghasilkan limbah organik terutama berasal dari sisa pakan dan hasil ekskreta (feses). Bakteri heterotrofik memiliki kemampuan untuk menghasilkan enzim ekstraseluler yang diperlukan untuk bioremediasi limbah organik. Penelitian ini ditujukan untuk mengisolasi bakteri heterotrofik yang berasal dari ekosistem mangrove utuk dikembangkan sebagai agensia bioremediasi limbah organik pada tambak udang. Sedimen mangrove diperoleh dari kawasan mangrove Segara Anakan- Cilacap dan kawasan Mangrove Kaliuntu-Kabupaten Rembang. Isolasi dilakukan dengan metode agar tuang menggunakan media Zobell agar. Pengujian aktivitas proteolitik, amilolitik, lipolitik dan selulolitik dilakukan dengan metode diffusion agar menggunakan paper disk berturut-turut pada media Zobell agar yang diperkaya dengan 1% skim milk, 1% amilum, dan 1% tween 80 dan 1 % CMC. Diameter zone hidrolitik digunakan sebagai dasar untuk melakukan seleksi. Hasil penelitian diperoleh 35 isolat (16 isolat dari Kaliuntu – Rembang dan 19 isolat dari Segoro Anakan – Cilacap). Jumlah isolat yang mempunyai kemampuan menghasilkan enzim ekstraseluler berturut-turut 33 isolat dengan aktivitas proteolitik 25 isolat dengan aktivitas amilolitik, 29 isolat dengan aktivitas lipolitik, dan 12 isolat dengan aktivitas selulolitik. Hasil seleksi berdasarkan diameter zone hidrolitik diperoleh 10 isolat yang potensial untuk dikembangkan sebagai agensia bioremediasi.Kata kunci: proteolitik, amilolitik, lipolitik, selulolitik, mangrove, bioremediasi, tambak udangBioremediation of shrimp pond plays an important role in the effort to clean up the internal pollutants of pond produced during the cultivation process. Shrimp farming produces mainly organic waste from food remains and the excreta. Heterotrophic bacteria have the ability to produce extracellular enzymes required for the bioremediation of organic waste. This study aimed to isolate heterotrophic bacteria from mangrove ecosystem to be developed as agents of bioremediation of organic wastes in shrimp ponds. This was done by isolating and selecting bacteria producing extracellular enzymes of proteolytic, amylolitic, lipolytic and cellulolytic from mangrove sediments collected from the mangrove area of Segara Anakan at District of Cilacap and Kaliuntu, district of Rembang. Isolations were done by pour-plate method using a Zobell agar medium. Assays for proteolytic, amilolytic, lipolytic and cellulolytic activity were performed using paper disk on Zobell agar medium enriched respectively with 1% skim milk, 1% soluble starch, 1% tween 80 and 1% CMC. Hydrolytic zone diameter was used as the basis for selection of enzymatic activities. The results obtained was 35 isolates (16 isolates from Kaliuntu–Rembang dan 19 isolate froms Segara Anakan – Cilacap), consisting of 33 proteolytic enzyme, 25 amilolytic enzyme, 29 lipolytic enzyme and 12 isolates cellulolytic producing enzyme. Based on hydrolytic zone diameter were selected 9 isolates which potential to be developed as bioremediation agent.Key words: Bioremediation, proteolytic, amilolytic, lipolytic, selulolytic

oai:ojs.ejournal.undip.ac.id:article/52155 2023-11-03T06:35:59Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/52155 2023-11-03T06:35:59Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 2 (2023): Ilmu Kelautan; 181-188 Rahili, Nurkhalis; Research Center for Hydrodynamic Technology, National Research and Innovation Agency Hakim, Buddin Al; Research Center for Hydrodynamic Technology, National Research and Innovation Agency Ariyanto, Danang; Research Center for Hydrodynamic Technology, National Research and Innovation Agency Cholishoh, Eny; Research Center for Hydrodynamic Technology, National Research and Innovation Agency Aprijanto, Aprijanto; Research Center for Hydrodynamic Technology, National Research and Innovation Agency Prabawardani, Destianingrum Ratna; Research Center for Hydrodynamic Technology, National Research and Innovation Agency Prijambodo, Tjahjono; Research Center for Hydrodynamic Technology, National Research and Innovation Agency Gumbira, Gugum; Department Civil engineering and Industrial Design, University of Liverpool 2023-06-10 00:46:24 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/52155 Tidal; Disaster Preparedness; Port Area; Coastal City; Semarang en Tanjung Emas Port, Semarang, is vulnerable to hydrometeorological disasters and tidal flooding due to tides and rising sea levels. The tidal flood also impacts human activities and industrial operations around the coastal area. Several measures have been taken to make the community resilient to tidal flooding and adapt to this disaster. A tidal flood happened in Semarang from May to June 2022 with a flood height of up to 210 cm. This incident disturbed the primary port operations, with more than 75% of the port area full of water. The total loss was estimated up to IDR 615 billion. Many factors influenced this incident, such as the rising sea levels due to global warming, tides, and other atmospheric conditions, causing weather anomalies. This study aims to compare and validate Geospatial Information Agency (BIG) tide data with Meteorological, Climatological, and Geophysical Agency (BMKG) tide data using three kinds of statistical test, that are mean relative error (MRE), root mean square error (RMSE), and mean absolute error (MAE). Also, to conduct tidal analysis using 11 years of tide data measurement to know the tide's characteristics in Semarang's coastal area. The result will be used to provide input for strategic steps and preparation for disaster preparedness that will occur in the near future. Tide data analysis using MIKE21, the IOS method. The result shows data comparison error &lt; 5% and a Formzahl value of 1.797 with the type of tide mixture prevailing diurnal and the change of water level up to 10 cm.y-1.

oai:ojs.ejournal.undip.ac.id:article/1403 2017-08-19T22:49:45Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/1403 2017-08-19T22:49:45Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 1 (2010): Ilmu Kelautan; 1-6 Cahyono, Bambang; Laboratorium Kimia Organik MIPA Universitas Diponegoro, Jalan Prof. Sudarto, Tembalang, Semarang 50275 (phone/fax: 024-7474754,e-mail: bbc_cahyono@yahoo.com) Legowo, Bayu; Laboratorium Kimia Organik MIPA Universitas Diponegoro, Jalan Prof. Sudarto, Tembalang, Semarang 50275 (phone/fax: 024-7474754) Supriyanto, Jusup; Program Studi. Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Jl. Prof Sudharto, Kampus Tembalang Semarang 50275 (phone.024- 7474 698, e-mail: ita_jusup@yahoo.co.id) Widowati, Ita; Program Studi. Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Jl. Prof Sudharto, Kampus Tembalang Semarang 50275 (phone.024- 7474 698) 2012-01-28 21:43:59 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/1403 in Amusium pleuronectes merupakan salah satu biota laut yang sangat prospektif untuk dikembangkan. Beberapa senyawa asam lemak yang terdapat dalam bahan alam tersebut, untuk pertamakalinya telah berhasil diidentifikasi dan diusulkan strukturnya. Sampel A. pleuronectes dikumpulkan dari perairan Weleri - Kendal, Jawa Tengah. Isolasi bahan dilakukan dengan ekstraksi kontinyu, diikuti dengan hidrolisis dan esterifikasi menggunakan methanol/BF3. Analisis ester dari asam lemak dilakukan dengan GC-MS, menghasilkan tujuh puncak utama yang diusulkan sebagai asam tetradekanoat, asam pentadekanoat, asam heksadekanoat, asam heksadekaenoat, asam heptadekanoat, asam oktadekanoat dan asam oktadekaenoat, Senyawa omega-3 yang lazim diperoleh dalam bahan alam laut jenis lain, tidak ditemukan dalam sampel dari lokasi yang dipilh. Keadaan ini membuka telah wawasan bagi penelitian lebih lanjut, khususnya data dari daerah lain, guna mendapatkan gambaran peta potensi pengembangan A. pleuronectes di Jawa Tengah. Kata kunci : Amusium pleuronectes, asam lemak, gonad&nbsp; Amusium spleuronectes. is one of the marine biota that very prospective for further development. Several fatty acid compounds contained in this natural product, for the first time have been identified and proposed their structures. Samples were collected from the waters of Weleri - Kendal, Central Java. Materials isolation were carried out using continuous extraction, followed by hydrolysis and esterification using methanol/BF3. Analysis of fatty acid esters by GC-MS, resulting in seven main peaks which is proposed as tetradecanoic acid, pentadecanoic acid, hexa-decanoic acid, heptadecanoic acid, and oktadecanoic acid. Omega-3 compounds commonly found in other materials types of marine natural, not found in samples from locations selected. This situation opens perspectives This situation opens perspectives for further research, especially data from other regions, in order to get an picture map of A. pleuronectes potential development in Central Java. Key words: &nbsp;fatty acids,&nbsp; Amusium pleuronectes, gonad

oai:ojs.ejournal.undip.ac.id:article/10657 2021-10-13T05:39:23Z ijms:R-ART

v2 https://ejournal.undip.ac.id/index.php/ijms/article/view/10657 2021-10-13T05:39:23Z ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 2 (2017): Ilmu Kelautan; 85-92 Salnuddin, Salnuddin; Universitas Khairun-Ternate Nurjaya, I Wayan; Bogor Agricultural University Jaya, Indra; Bogor Agricultural University Natih, Nyoman M.N; Bogor Agricultural University 2017-06-05 07:07:02 Copy this form and after filling it, please send it to ijms@live.undip.ac.id:COPYRIGHT TRANSFER STATEMENTWhen this article is accepted for publication, its copyright is transferred to ILMU KELAUTAN Indonesian Journal of Marine Sciences, UNDIP. The copyright transfer covers the non exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.The author warrants that this article is original and that the author has full power to publish. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. In regard to all kind of plagiarism in this manuscript, if any, only the author(s) will take full responsibility.  If the article is based on or part of student’s skripsi, thesis or dissertation, the student needs to sign as his/her agreement that his/her works is going to be published. Title of article       :...........................................................................................................................Name of Author(s) :...........................................................................................................................Author’s signature  :...........................................................................................................................Date                     :...........................................................................................................................               url:https://ejournal.undip.ac.id/index.php/ijms/article/view/10657 en Based on Ethno–Oceanography of the Sama tribe in Eastern Indonesia, they measured and determined tidal range when Sya’ban taking place. Why do they do so? The questions and objective of this study were intended to respond the scientific fundamental of Ethno-Oceanography of the Sama tribe. In order to achieve the objective of this study, the tidal range value in each Hijra month was compared and analyzed statistically (ANOVA). Tidal Analysis results showed that the tidal range at Sya’ban was higher and the deviation was lower than the other months. Moreover, ANOVA results showed that Sya’ban was significantly different (P&lt;0.05) on Highest High Water Level (HHWL) throughout Hijra month.  Keywords: Sama Tribe, Sya’ban, Hijra Calendar f42ad9ee78cdc34e41e252cf8162a94c