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All Journal Jurnal Pengolahan Hasil Perikanan Indonesia Jurnal Ilmu dan Teknologi Kelautan Tropis JURNAL PERIKANAN DAN KELAUTAN TROPIS JOURNAL OF COASTAL DEVELOPMENT ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology GEMA TEKNOLOGI Bioma : Berkala Ilmiah Biologi SAINS DAN MATEMATIKA POSITRON Journal of Oceanography Journal of Marine Research Jurnal Harpodon Borneo Waste Technology International Journal of Marine and Aquatic Resource Conservation and Co-existence Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Jurnal Ilmiah Pangabdhi Jurnal Kelautan Tropis E-Dimas: Jurnal Pengabdian kepada Masyarakat JURNAL MAHKAMAH JURNAL ENGGANO Jurnal Penelitian Sains JFMR (Journal of Fisheries and Marine Research) BIOTROPIC The Journal of Tropical Biology TARLING Journal of Language Education JURNAL MUQODDIMAH : Jurnal Ilmu Sosial, Politik dan Hummaniora Biosaintifika: Journal of Biology & Biology Education Jurnal Kebijakan Perikanan Indonesia QARDHUL HASAN: MEDIA PENGABDIAN KEPADA MASYARAKAT Molekul: Jurnal Ilmiah Kimia Jurnal Mangifera Edu Ulumuna: Jurnal Studi Keislaman ULIN: Jurnal Hutan Tropis Best Journal (Biology Education, Sains and Technology) Kontribusia : Research Dissemination for Community Development TERAJU : Jurnal Syariah dan Hukum Journal of Marine and Coastal Science Airlangga Journal of Innovation Management Juvenil: Jurnal Ilmiah Kelautan dan Perikanan Journal of Coastal and Ocean Sciences Indonesian Journal of Oceanography Environmental Pollution Journal Jurnal Miyang : Ronggolawe Fisheries and Marine Science Journal EDUCATOR : Jurnal Inovasi Tenaga Pendidik dan Kependidikan Gladi : Jurnal Ilmu Keolahragaan Tarling : Journal of Language Education Jurnal Keuangan dan Akuntansi Terapan (KUAT) Keris: Journal of Community Engagement Jurnal Teknik Terapan (J-TETA) JUSIFOR : Jurnal Sistem Informasi dan Informatika ABDIMU Jurnal Pengabdian Kepada Masyarakat Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Journal of Aceh Aquatic Sciences Jurnal Pemberdayaan Masyarakat dan Komunitas
Muhammad Zainuri
Departemen Oseanografi , Fakultas Perikanan Dan Ilmu Kelautan, Universitas Diponegoro
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Antibacterial Activity of Microalgae Dunaliella salina, Tetraselmis chuii and Isochrysis galbana Against Aquatic Pathogens Ita Widowati; Muhammad Zainuri; Hermin Pancasakti Kusumaningrum; Yann Hardivillier
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 4 (2021): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.26.4.265-270

Abstract

Recently, expanded consideration has been paid to the business and potentiality of microalgae. Some microalgae are at present being studied for their capacity to find important metabolites for the drug industry or aquacultural applications. Concerning these biotechnological challenges, there is a consistent exertion accommodated in both finding and taking advantage of new microalgal assets and fostering their putative business results or modern valorizations. The crude methanol extracts of three microalgae, Dunaliella salina, Tetraselmis chuii, and Isochrysis galbana, have been investigated for antibacterial activity using the disk diffusion method against aquatic pathogens of fish, shrimp, and shellfish e.g. Pseudomonas fluorescence and Vibrio harveyi. This research aimed to analyze the antibacterial activity of crude extract of these microalgae against aquatic pathogens. The disk diffusion method was used to investigate the antibacterial activity. The result showed that only T. chuii has the inhibition zone for both tested bacteria P. fluorescence and V. harveyi with the inhibition zone of 3.0 ± 0.6 mm on 100 µg. g–1 of extract concentration and 4.20 ± 1.1 mm against P. fluorescence on 10000 µg. g–1 of extract concentration. While D. salina and I. galbana have inhibition zone only for V. harveyi with the inhibition zone of 4.4 ± 0.6 mm and 3.2 ± 0.7 mm on 10000 µg. g–1 of extract concentration. These three microalgae may have potential use in aquatic pathogens as antimicrobial agents. It would be possible to develop biologically active compounds of microalgae as a functional feed for aquaculture.
Characteristics of Mixed Layer Depth and Its Effect on Concentration of Chlorophyll-a (Karakteristik Mixed Layer Depth dan Pengaruhnya Terhadap Konsentrasi Klorofil-a) Novita Ayu Ryandhini; Muhammad Zainuri; Anastasia Rita Tisiana D. K.
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 4 (2014): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (400.879 KB) | DOI: 10.14710/ik.ijms.19.4.219-225

Abstract

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
Formation of Eco-friendly Silver Nanoparticle Microalgae using Chlorella vulgaris Hermin Pancasakti Kusumaningrum; Muhammad Zainuri; Widianingsih Widianingsih; Wahyu Dewi Utari Haryanti; Indras Marhaendrajaya; Robertus Triaji Mahendrajaya
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 1 (2019): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (524.582 KB) | DOI: 10.14710/ik.ijms.24.1.7-14

Abstract

Biosynthesized silver nanoparticles (AgNPs) using organism have spurred great interest as a antimicrobial and biomedical agents. Green microalgae have advantages as they are easily available, grow rapidly and producing varieties metabolites. Synthesized of AgNPs from  microalgae C. vulgaris offer environmentally antimicrobial agent. The objectives of the study is producing AgNPs microalgae using C. vulgaris as eco-friendly antimicrobial agent. The research methods was conducted by synthesizing silver nanoparticle microalgae using C. vulgaris following by characterization under UV–visible spectroscopy,  transmission electron microscopy  (TEM), and scanning electron microscope (SEM) and Energy-dispersive X-ray spectroscopy (EDX). The research result showed AgNPs C. vulgaris microalgae were produced with and without agitation treatment under different condition. The synthesized AgNPs C. vulgaris exhibited a maximum absorption at 312 nm and 398 nm, and EDX analysis had determined that abundance chemical elements presented in a sample were carbon  and silver.  The TEM analysis revealed that they are spherical form. The spot of EDX analysis showed the presence of silver atoms. The SEM analysis shows the spherical shaped with some silver particle inside of the cell. These resut indicated that formation of silver nanoparticle microalgae using C. vulgaris has been succesfully obtained under the treatment. 
Application of Aquaculture Natural Food Produce by Protoplast Fusion Process of Dunaliella salina and Phaffia rhodozyma Hersugondo Hersugondo; Hermin Pancasakti Kusumaningrum; Muhammad Zainuri
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 15, No 4 (2010): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1003.706 KB) | DOI: 10.14710/ik.ijms.15.4.236-242

Abstract

Recently, fishponder income tend to be static so that required an effort to accurately and efficiently one of them through aquacultures  food diversification. So far, efforts to observe the pattern of introduction of a new feed, applications and their impact on aquaculture and fish farmers income has never been measured. Diversification of feed use protoplast fusion process from D. salina and P. rhodozyma which rich in natural carotenoids is needed in aquaculture because they will increase survival and body weight of animal farming. Different types of carotenoids can be combined through a process of protoplasm fusion making it cheaper, faster and efficient for diversification and development of carotenoid-rich diet. The specific objectives of this research is the development of natural food aquaculture with high carotenoid content using protoplasm fusion  from the microalgae D. salina and yeast P. rhodozyma. The early stage in this research will cultivate recombinant followed by quantitative analysis of carotenoid production compared with controls. The second stage is the food diversification with different concentrations of recombinant and comparisons with commercial food followed by cost-benefit analysis. The research results have been obtained which  most carotenoid-rich natural food resulted from recombinant fusion of D. salina and P. rhodozyma. Its application in vitro have increased body weight of shrimp comparing to artificial feed. In addition, recombinant food showing stable growth in both freshwater and salt water, can breed naturally and are safe for animal aquaculture consumption and also the environment. Key words : carotenoid, protoplast fusion, D. salina,  P. rhodozyma, recombinant Selama ini pendapatan petani tambak cenderung statis sehingga diperlukan suatu upaya secara tepat dan efisien salah satunya melalui diversifikasi pakan. Sejauh ini usaha untuk mengamati pola introduksi suatu pakan baru, aplikasi dan dampaknya terhadap budidaya dan pendapatan petani tambak belum pernah terukur. Diversifikasi pakan mengggunakan pakan kaya karotenoid alami sangat dibutuhkan dalam budidaya perikanan karena terbukti dapat meningkatkan keloloshidupan dan menambah bobot hewan budidaya. Kedua jenis karotenoid β-karoten dan astaxantin dapat digabungkan melalui  proses fusi protoplasma sehingga lebih murah, cepat dan efisien untuk diversifikasi dan pengembangan pakan kaya karotenoid.  Tujuan khusus penelitian ini adalah pengembangan usaha budidaya  untuk  meningkatkan  pendapatan  petani  tambak  melalui  diversifikasi  pakan  akuakultur  dengan kandungan karotenoid tinggi hasil fusi protoplasma alga Dunaliella salina dan khamir Phaffia rhodozyma. Tahap awal dalam penelitian ini akan melakukan kultivasi pakan rekombinan Dunaliella salina dan Phaffia rhodozyma diikuti analisis produksi karotenoid secara kuantitatif dibandingkan dengan kontrol. Tahap kedua adalah diversifikasi pakan dengan perbedaan konsentrasi fusan dan perbandingan dengan jenis pakan lain diikuti dengan analisis untung rugi. Kata kunci : karotenoid, fusi protoplas, D. salina,  P. rhodozyma, rekombinan
Spatial and Temporal Distribution of Blue Swimming Crab Larvae (Portunus pelagicus) in The Conservation Area of Betahwalang, Central Java Sri Redjeki; Muhammad Zainuri; Ita Widowati; Abdul Ghofar; Elsa Lusia Agus; Mustagfirin Mustagfirin; Fabian Panji Ayodya; Michael Abbey
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 4 (2020): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.25.4.173-178

Abstract

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.
Asexual Reproduction of Black Sea Cucumber from Jepara Waters Retno Hartati; Muhammad Zainuri; Ambariyanto Ambariyanto; Sri Redjeki; Ita Riniatsih; Ria Azizah; Hadi Endrawati
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 24, No 3 (2019): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.263 KB) | DOI: 10.14710/ik.ijms.24.3.121-126

Abstract

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.
Relationship Between Stage of Gonad Maturity and Level of Osmotic Work of Sea Cucumber, Paracaudina australis Widianingsih Widianingsih; Muhammad Zainuri; Sutrisno Anggoro; Hermin Pancasakti Kusumaningrum; Retno Hartati
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 1 (2018): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (190.34 KB) | DOI: 10.14710/ik.ijms.23.1.63-68

Abstract

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.
Seasonal Variability of Waves Within the Indonesian Seas and Its Relation With the Monsoon Wind Purwanto Purwanto; Denny Nugroho Sugianto; Muhammad Zainuri; Galuh Permatasari; Warsito Atmodjo; Baskoro Rochaddi; Aris Ismanto; Parichat Wetchayont; Anindya Wirasatriya
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 26, No 3 (2021): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.26.3.189-196

Abstract

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.
Aplikasi Pakan Alami Kaya Karotenoid untuk Post Larvae Penaeus monodon Fab. (Applications Rich Natural Carotenoids Feed for Post Larvae of Penaeus monodon Fab.) Hermin Pancasakti Kusumaningrum; Muhammad Zainuri
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 3 (2013): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (264.161 KB) | DOI: 10.14710/ik.ijms.18.3.143-149

Abstract

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  
Pengaruh Kepadatan Terhadap Tingkat Kematangan Gonad dan Fekunditas Kepiting Bakau (Scylla serrata) pada Kultivasi di Tambak Garam Hadi Endrawati; Muhammad Zainuri; Chrisna A Suryono; Suryono Suryono
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 4 (2004): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (118.016 KB) | DOI: 10.14710/ik.ijms.9.4.196-201

Abstract

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
Co-Authors . Juliana A Arwiyah AB, Balik Jaya Abdul Ghofar Abdus Salam Junaedi Afifa, Fitria Hersiana Agnadiva, Alisha Khansa Agung Suprihadi Agung Suprihadi Agus Hartoko Agus Indarjo Agus Nur Fahmi Agus Sabdono Agus Subagio Ahmad Fadlan Aini, Firly Nur Aisyaroh, Masrifatul Akhmad Farid Akrom, Akrom Al-Mansury, Abdul Hamid Alfan Biroli, Alfan Alfi Satriadi Amalya, Afroh Ambariyanto Ambariyanto Ameylia Ayu Puspitasari Anastasia Rita Tisiana D. K. Anastasia Tisiana Dwi Kuswardani Andita Agung Andreas Nur Hidayat Andriansyah, Dhito Maulana Anggoro, Naufal Sebastian Anindya Wirasatriya Anisa Dewi Nugraheni Anistia Malinda Hidayat Anjani, Revi Putri Dwi Annisa Fadillah Annisa Nur Ayuningtyas Antik Erlina Anto Budiharjo Ardiansyah Desmont Puryajati Arif Mustofa Aris Ismanto Arrayanul Jannah, Annisa Asih Rismiarti, Asih Asnawati Asnawati Awaludin, Aji Ayu Wijayanti, Diyah Ayu Zuanita Susanto, Chulud Azhary, Abrar Dalisfasha Azis Rifai Aziz Nur Bambang Azka, Raven Naufal Baskoro Rochaddi Baso Mukramin Bayu A Pranoto Bayu Priyono Budi Raharjo Chandra, AB. Chandra, Adyos Bobby Chatarina Umbul Wahyuni Chrisna A Suryono Darminto . Deki Lukman Wicaksono Deki Lukman Wicaksono Denny Nugroho Sugianto Devi Yuni Sari Sihombing Dewi Masyitoh Syihab Dierrisska, Pudja Handjanny Nastitie Dimas Eko C Dinda Ayu Octaviana Dionisia Dini Nugraheni Doktorasaintifika, Heradita Kaniaazzahra Dwi Haryo Ismunarti Dwi Haryo Ismunarti Dwi Yuliasari Dwian Lumbangaol Edy Supriyo Efendy, Erika Noviyana Eka Riadi Elis Indrayanti Elke Gildantia Elsa Lusia Agus Endang Kusdiyantini Euniche R.P.F. Ramandey Fabian Panji Ayodya Fahmi, Muhammad Hanif Faiz Hamzah Adriono Faizin, Muhammad Sahrul Febi Ayu Pramithasari Febrianto, Sigit Fery , Lasiyano A Finna Widya Ariani Fiona Aqhila Dewi Firman Farid Muhsoni Fortunata Riana Fredyansyah, Maulana Alfi Frida Fanani Rohma Frijona Fabiola Lokollo Gabriella Inez Aramita Galih Tristianto Galuh Permatasari Ganis T.K, Ganis Gatot Yulianto Gentur Handoyo Gizka Anindya Putri Goff, Virginia Andrews- Graha, Dorin Satya Greenaty Hidayah Gymnastiar, Muhammad Hadi Endarwati Hadi Endrawati Hadi Endrawati Hadi Endrawati Hafiludin, H Hafiludin, Hafiludin Hamdhana, Raka Anugrah Hanjaya, Rayen Harfatia Chandra Puspita Sari Hariyadi . Haryo Triajie, Haryo Heksa Raihan Herida, Azalia Puspa Hermin P Kusumaningrum Hermin Pancasakti Kusumaningrum Hersugondo Hersugondo Hersugondo Hersugondo Herusugondo Herusugondo Heryoso Setiyono Hidayat, Ryan Akhmal Hilyati Fajrina Ibrahim, Rosita Ida Noventalia Ika Putri Hindaryani Imam Misbach Imam Mishbach Iman, Hudiya Izzatul Indah Wahyuni Abida Indra Budi Prasetyawan Indra Budi Prasetyawan Indras Marhaendrajaya Ita Riniatsih Ita Widowati Iwan Yahya Izzudin, Maulana Zidan Jarot Marwoto Jihadi, Muhammad Shulhan Johanes Hutabarat Junaedi, Abdus Salam Karima, Zalfa Kevifa Satria Widjaya Khoirun Nisa Kholizah, Nur Kresnasari, Dewi Kunarso Kunarso Kusumaningrum, Hermin Lachmuddin Sya’rani Laksani, Mertiara Ratih Terry Lilik Maslukah Lilis Sugiarti Lukman, Annisa Aulia Lusi Lastria M. Sholeh Maharani, Galung Dhiva Maharani, Salsabila Dewi Mahardiani Putri Naulia Batubara Mahardiani Putri Naulia Batubara Mahendrajit Yudhantoko, Mahendrajit Mahfud Efendy Maisaroh, Dian Sari Manik, Tetti Novalina Marliantari, Sulistina Maro, Jahved Ferianto Mashuri Mashuri Masrifatul Aisyaroh Max Rudolf Muskananfola Maya Angaraini Fajar Utami Meida Yustiana Merican, Marcelino Ricky Mertiara Ratih Terry Laksani Michael Abbey Mirza Nadia Misbach, Imam Mochamad Iqbal Herwata Putra, Mochamad Iqbal Mochammad Facta Moh Holli Mohammad Arsyad Mudawam, Mohammad Reza Muh Yusuf Muh Yusuf Muh Yusuf Muh. Yusuf Muhammad Helmi Muhammad Iskandar Zulkarnain Muhammad Iskandar Zulkarnain Muhammad Sababa Alhaq Muhammad Wahyu Firmansyah Muhammad Wahyu Romadhon Mumtaz, Fathiyah Muslim Muslim Mustagfirin Mustagfirin Mustagpirin Mustagpirin Mutmainah, Nur Fitri Nabilah Rizki Nawawi, M Anwar Nelly Florida Riama Ningrum, Devita Ningrum, Riska Widyah Nisa', Khoirun Nisrina Nisrina Noor, Rifky Fadlian Novi Indriyawati Novianti, Teni Novita Ayu Ryandhini Nugroho Agus D Nurafni Tumanggor Nurhayati Nurhayati Nurhayati Nurhayati Nurindahsari Niken Larasati Nurul Latifah Nurwahid, Ahmad Ohee, Henderite Loisa Okti Hajeng Kristiadi Pahlevi, Firdha Maudiyah Pahlevi, Firdha Maulidyah Panji Ayodya Parichat Wetchayont Parry, Markus Julio Person Pesona Renta Petrus Subardjo Poma, Yoniva Nandarista Pradipta, Zulfa Abkar Pradiva, Zahra Aninda Primaswatantri Permata Puguh Sujarta Purwanto Purwanto Purwanto Purwanto Purwanto Purwanto Puspitasari, Radita Putri Puspitasari, Vita Ayu Putri Asrudi, Lutfia Ardita Mayra Rahmad Triadi Rahmadiana Andini Rahman Rahman Rejeki Siti Ferniah Reksajaya, Puspaningtyas Mutiaraputri Renni Yuniati Restu Nur Afi Ati Resy Sekar Sari Retno Hartati Rezfiko Agdialta Ria Azizah Rica Dewanty Ricky Daniel Aror Ridarto, Arij Kemala Yasmin Rifky Aryasatya Risian, Muhammad Haiqal Aulia Rizka Rahmana Putri Robertus Triaji Mahendrajaya Rose Dewi Rose Dewi Rose Dewi Rosikhul Islah I Rosita, Rosita Ibrahim Rosmeiuli Panjaitan Rudhi Pribadi Rudhi Pribadi S R Wahyudi Safikri, Ilham Sakti Pancar Emak Santoso, Tanto Budi Shaliha, Shaliha Shanas Septy Prayuda Sidhi Saputra Simatupang, Ariel Oscar Paskario Simon Sadok Siregar, Simon Sadok Siti Jubaedah Siti Nur Jannah Solly Aryza Sri Amini Sri Redjeki Sri Redjeki Sri Rejeki Sri Yulina Wulandari Subagiyo Subagiyo Subono, Maulana Sudjadi Sugeng Widada Sulaiman, Zainal Muttaqien Sulis Setyowati, Sulis Sulistyowati Sulistyowati Sulistyowati Sulistyowati Suradi Widjaya Saputra Suryani, Oda Gracia Ariela Suryanti - Suryono Suryono Suryono Suryono Sutrisno Anggoro Sutrisno Anggoro Syaifudin Syarani, Lachmudin Syarifah, Wasiqatus Syawallita, Ridha Olnis Teni Novianti Timur, Galang Sandi Titik Susilowati Tjahjo Winanto Tony Hadibarata, Tony Topo Yono Tri Widya Laksana Putra Ummu Salma Wahyu Budi Setyawan Wahyu Dewi Utari Haryanti Wahyuni, Ananda Wahyuningsih, Candra Wardani, Adella Eka Warsito Atmodjo Wati, Tarisa Sholikha Wiarta, Rinto Widianingsih Widianingsih Widianingsih Widianingsih Widiaratih, Rikha Widodo S Pranowo Widodo Setiyo Pranowo Wijanarka Wijanarka Winona Abigail Witria Witria Yann Hardivillier Yopie Anggara Putra Yopie Anggara Putra, Yopie Anggara Yosafat Donni Haryanto Yoshua Mario Sumbodo Yulia Ulfah Yuniar Andri Sulistiyanto Yuvita Muliastuti Zulfiandi Zulfiandi