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INDONESIA
Jurnal Perikanan Universitas Gadjah Mada
Published by Universitas Gadjah Mada
ISSN : 08536384     EISSN : 25025066     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Perikanan Universitas Gadjah Mada are published to promote a critical review of the various investigative issues of interest in the field of fisheries between the researchers, academics, students and the general public, as a medium for communication, dissemination, and utilization of wider scientific activities.
Arjuna Subject : -
Articles 6 Documents
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Search results for , issue "Vol 14, No 1 (2012)" : 6 Documents clear
PENELUSURAN SENYAWA BIOAKTIF BAKTERI YANG BERASOSIASI DENGAN ANEMON LAUT SERTA IDENTIFIKASI MOLEKULERNYA BERBASIS 16S rDNA Naely K Wusqy; Dwi I Prayitmo; Ocky K Radjasa; Leenawaty Limantara; Ferry F Karwur1
Jurnal Perikanan Universitas Gadjah Mada Vol 14, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9049

Abstract

Sea anemone-associated microorganisms are among of the most interesting and promising marine natural product sources, which produce various biological activities. In this study, marine bacteria were isolated from 2 kinds of sea anemones, Entacmaea medusivora and Green Anemone that were collected from Bandengan, Jepara and Maratua, East Borneo respectively. Nine bacterial isolatesof E.medusivora were screened for antibacterial activity against 8 strains. One out of 9 bacterial isolates was successfully screened and was found to be active against V. parahaemolyticus strains. This active isolate was also capable of amplifying PKS gene fragments necessary for the biosynthesis of polyketide synthase. The identifi cation results revealed that the active isolate is Bacillus cereus. One bacterial isolate of Green Anemone was screened to produce the pigment and positively synthesize carotenoids. Initial analysis with atomic absorption spectrophotometric method revealed that the wave length of bacterial pigment were in the range of 300-600 nm, which are categorized that within the group of carotenoid pigments. From the results of molecular identifi cation by 16S rDNA method, it was shown that bacterium was closely related to Xanthomonas sp.
APLIKASI TRIPTOFAN DAN GLISIN DALAM PAKAN RUCAH SERTA PENGARUHNYA TERHADAP TINGKAT KANIBALISME, PERTUMBUHAN DAN SINTASAN KRABLET KEPITING BAKAU (Scyla serrata) Suharyanto Suharyanto; Denny I Yudhistira
Jurnal Perikanan Universitas Gadjah Mada Vol 14, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9050

Abstract

The aims of this experiment was to obtain data and information on the percentage of decrease in the levels of cannibalism, growth and survival rate of mud crab crablet (Scyla serrata) by feeding trash mixed with tryptophan and glycine. This research was conducted in the wet lab experimental pond installation at Center of Research and Development of Brackish Water Aquaculture Maranak, Maros for 28 days using 12 aquariums each measuring 80x40x60 m3. Crablets (C-20) from the hatchery were used for this study, measuring 5.3+0.2 mm in width and 0.15+0.02 g in weight. Ten crablets were stocked in each aquarium. The treatments applied were (A): trash fi sh tilapia (Tilapia mosambica), (B): trash fi sh + tryptophan and (C): trash fi sh + glycine, with three replicates per treatment. Feeding dose was 25% of the total biomass crablet while the dose of tryptophan and glycine were 1.0% of the amount of feed given per aquarium. Feeding was done twice a day in the morning and evening. Variables observed were the growth in carapace width, weight, level of cannibalism, survival rate and water quality parameters. The results showed that   adding the amino acids tryptophan and glycine in trash fi sh feed  at 1.0% of total biomass could signifi cantly (P<0.05) suppress the level of cannibalism krablet without affecting the growth rate (weight and width of carapace) and   increase the survival rate of the mud crab krablet.
HUBUNGAN PERKEMBANGAN MORFOLOGI DENGAN ORGAN PENCERNAAN LARVA KERAPU BEBEK (Cromileptes altivelis) TURUNAN KE-3 (F-3) Wawan Andriyanto; Muhammad Marzuqi
Jurnal Perikanan Universitas Gadjah Mada Vol 14, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9052

Abstract

Pengamatan perkembangan morfologi dan perkembangan saluran pencernaan larva ikan kerapu bebek F3 hasil pembenihan induk generasi F2 telah dilakukan melalui serangkaian pemeliharaan dari umur 1 HSM (hari setelah menetas) sampai dengan 40 HSM. Sampel larva diambil setiap hari dari 1 HSM sampai dengan 10 HSM dan dilanjutkan interval 3 hari sampai umur 40 HSM. Pakan alami diberikan sesuai dengan SOP perbenihan kerapu. Sampel dianalisa secara histologi dan morfologi dengan piranti lunak yang mendukung. Fase yolk sac sampai dengan pre fl exionsecara pertumbuhan tidak signifi kan, namun perkembangan morfologi dan differensiasi saluran pencernaan berkembang sangat pesat. Pada fase ini organ pencernaan larva sudah terbagi dari mulut, esophagus, perut, usus dananus namun belum sempurna. Pada fase akhir pre fl exion (13 HSM) pertumbuhan larva menunjukkan grafi k eksponensial (tumbuh cepat). Notochord terbentuk pada fase fl exion (18-20 HSM), sementara organ pencernaan terutama perut dan usus mulai berkembang. Perkembangan morfologi stadia larva kerapu bebek turunan ke-3 (F3) dari fase yolk sac sampai dengan juvenil memerlukan waktu sekitar 28 sampai dengan 31 HSM. Proporsi duri sirip punggung pada stadia prefl exion sampai dengan postfl exion memiliki panjang yang cenderung lebih tinggi dibanding kerapu yang lain yaitu 76%. Rata rata pertumbuhan panjang larva kerapu dari stadia yolk sac sampai dengan juvenil dicapai sebesar 0.41% dengan total panjang larva pada stadia juvenil adalah sekitar 18.42 ± 3.23 mmTL. Nilai standar deviasi yang tinggi memperlihatkan variasi ukuran pada akhir stadia. Larva kerapu bebek turunan ke-3 mulai memanfaatkan makanan dari luar sekitar umur 4 HSM dan saluran pencernaan mulai berfungsi optimal pada umur 28–31 HSM.
PARTISIPASI PEREMPUAN DALAM KONSERVASI MANGROVE DI DESA PASAR BANGGI KABUPATEN REMBANG Cahyani Pratisti; Hery Saksono; Suadi Suadi
Jurnal Perikanan Universitas Gadjah Mada Vol 14, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9047

Abstract

This research was aims to determine the form, level and the factors affecting women’s participation in mangrove conservation at Pasar Banggi Village, Rembang District. Survey was conducted on respondents with total number of 95 people, comprised of 50 women, 14 men, 10 children and 25 people representing related agencies were interviewed with semi-open questionnaire. The study showed that there were nine forms of female participation in conservation activities, which was women who are looking for information, planting seeds, fi ll polybags, nursery planning, decision-making in the implementation of the nursery, nurture the seeds of mangrove, mangrove preserve, transfer of knowledge to children and warn if there is people cut the tree. Based on Arnstein (1969) participation ladder, the study showed that female participation rates ranging from therapy to the partnership. Factors that affect women in conservation were women’s perceptions of themselves, social status and public perception of women’s participation. Women play an important role in the cycle of mangrove conservation, especially in the nursery stage. Nevertheless, women have not been involved in the decision-making process and enjoy the sale of mangrove seedlings. Strengthening women’s bargaining power and involvement in the management group is required to enable the equality of access and control between men and women in a cycle of mangrove conservation. This research was aims to determine the form, level and the factors affecting women’s participation inmangrove conservation at Pasar Banggi Village, Rembang District. Survey was conducted on respondentswith total number of 95 people, comprised of 50 women, 14 men, 10 children and 25 people representingrelated agencies were interviewed with semi-open questionnaire. The study showed that there were nineforms of female participation in conservation activities, which was women who are looking for information,planting seeds, fi ll polybags, nursery planning, decision-making in the implementation of the nursery,nurture the seeds of mangrove, mangrove preserve, transfer of knowledge to children and warn if thereis people cut the tree. Based on Arnstein (1969) participation ladder, the study showed that femaleparticipation rates ranging from therapy to the partnership. Factors that affect women in conservationwere women’s perceptions of themselves, social status and public perception of women’s participation.Women play an important role in the cycle of mangrove conservation, especially in the nursery stage.Nevertheless, women have not been involved in the decision making process and enjoy the sale ofmangrove seedlings. Strengthening women’s bargaining power and involvement in the managementgroup is required to enable the equality of access and control between men and women in a cycle ofmangrove conservation.
PEMANFAATAN DAN LAJU TANGKAP UDANG LOBSTER DI PANTAI SELATAN DAERAH ISTIMEWA YOGYAKARTA Supardjo S Djasmani; Djumanto Djumanto; Sukardi Sukardi
Jurnal Perikanan Universitas Gadjah Mada Vol 14, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9051

Abstract

Penelitian ini bertujuan untuk mengetahui potensi sumberdaya lobster, laju tangkap dan peluang pengembangannya. Metode penelitian yang digunakan dalam pengumpulan data adalah metode survei. Data dianalisis dengan metode surplus produksi metode Schaefer. Hasil penelitian menunjukkan lobster yang ada di pantai selatan DIY sebagian besar dari jenis udang pasir (Panulirus homarus), udang batu (Panulirus penisilatus), udang mutiara (Panulirus ornatus), udang bambu (Panulirus polyphagus) dan udang batik (Panulirus longipes). Produksi udang lobster berfl uktuatif baik secara musim dan tahunan dengan musim panen mulai bulan Oktober sampai dengan bulan Februari dan produksi tertinggi pada tahun 2007. Analisis mengenai jumlah perahu optimum foptimum adalah 723 unit perahu/th dengan potensi lestari maksimum (CMSY) sebesar 12.322,66 kg/th dan tangkapan total yang diperbolehkan (TAC) adalah 9.858,13 kg/th sedangkan aktual tingkat pemanfaatan sebesar 10.721,42 kg/th dengan laju tangkap adalah 17,05 kg/perahu/tahun. Upaya jumlah trip optimum diperoleh f(optimum) 13.324,39 trip/th dengan potensi maksimum lestari (CMSY) sebesar 13.914,6 kg/trip dan hasil tangkapan total yang diperbolehkan (TAC) adalah 11.136,7 kg/th, sedangkan aktual tingkat pemanfaatan mencapai 11.859,2 kg/th dengan laju tangkap pemanfaatan lobster sebesar 1,04 kg/trip. Hasil penelitian menunjukkan bahwa tingkat pemanfaatan sumberdaya lobster sudah lebih besar dari pada tangkapan total yang diperbolehkan (TAC) dan mendekati potensi lestari maksimum (MSY).
KARAKTERISTIK ATC Kappaphycus alvarezii PADA PERLAKUAN UMUR PANEN DAN SUHU EKSTRAKSI BERBEDA Mahbub L Furada; Widodo F Ma’ruf; Eko N Dewi
Jurnal Perikanan Universitas Gadjah Mada Vol 14, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9048

Abstract

One of the ATC quality is influenced by the length time of harvesting and temperature of extraction.The aimof the research was to determine the influenced of different time of harvesting K.alvarezii and the degree temperatureextraction process to the quality of the ATC product (yield, gel strength and viscosity). The material used wastaken from the Bandengan coastal area, Jepara. The treatments used was the difference temperature of extractionprocess which are 70oC and 80oC and the difference of harvesting time 35, 40, and 45 days. K.alvarezii extracted using6% KOH solution for 4 hours, dried and then is milled. The yield test showed that the used extraction temperatureof 80oC produces a higher yield than the temperature of 70oC, the percentage yield of ATC powder was increasein along with harvesting time of K.alvarezii. The gel strength test showed that the use of extraction temperature of70oC produces a higher gel strength and viscosity than the temperature of 80oC, the highest gel strength obtainedat 40 days harvesting time of seaweed.One of the ATC quality is infl uenced by the length time of harvesting and temperature of extraction.The aimof the research was to determine the infl uenced of different time of harvesting K.alvarezii and the degree temperatureextraction process to the quality of the ATC product (rendemen, gel strength and viscosity). The material used wastaken from the Bandengan coastal area, Jepara. The treatments used was the difference temperature of extractionprocess which are 70oC and 80oC and the difference of harvesting time 35, 40, and 45 days. K.alvarezii extracted using6% KOH solution for 4 hours, dried and then is milled. The yield test showed that the used extraction temperatureof 80oC produces a higher yield than the temperature of 70oC, the percentage yield of ATC powder was increasein along with harvesting time of K.alvarezii. The gel strength test showed that the use of extraction temperature of70oC produces a higher gel strength and viscosity than the temperature of 80oC, the highest gel strength obtainedat 40 days harvesting time of seaweed.

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