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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 460 Documents
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PENINGKATAN IMUNITAS BENIH IKAN KERAPU LUMPUR, Epinephelus coioides TERHADAP INFEKSI VIRUS IRIDO DENGAN APLIKASI VITAMIN C DAN BAKTERIN Fris Johnny; Des Roza; Agus Priyono
Jurnal Perikanan Universitas Gadjah Mada Vol 10, No 2 (2008)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8881

Abstract

An  experiment  to  increase  of  immune  system  of  mangrove  grouper,  Epinephelus coioides seed with application of vitamin C and immunostimulant have been done. The experiment was carried out in completely randomized design with three treatments in twoplicates. The mangrove grouper seed (5 cm total length) were treated with 1000 mg vitamin C/kg diet (A), 1000 mg vitamin C + 1 ml bacterin/kg diet (B), and control (C). Vitamin C and bacterin were given every 10 day during 60 days rearing. After 30 and 60 days fishes were challenged with irridovirus. At the end of experiment, the non-specific immune responses were examined. The result showed that at challange test I, the highest survival rate was at treatment B (56.6%), followed by A (55.0%) and control (41.7%). On challenge test II, the higest survival rate was at treatment B (76.7%) followed by treatment A (68.4%) and control (48.3%).  The highest phagocytic activity (PA) was obtained at treatment B (21.0%), followed by treatment A (18.5%) and control (9.5%). The highest of lysozyme activity (LA) value was obtained on treatment B (2.0 cm), followed by treatment A (1.9 cm) and control (1.3 cm).  Combination of addition of ascorbic acid and immunostimulant gave higher survival rate compared to addition of immunostimulant only and control. Non-spesific immune response of mangrove grouper fry was significant different among treatment (P<0,05).
Pengaruh Vitamin C Terhadap Perkembangan Gonad Induk Udang Galah (Macrobrachium rosenbergii) Wahyu Pamungkas; Ikhsan Khasani; Raden Roro Sri Puji Sinarmi Dewi
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 2 (2007)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.30

Abstract

The objective of the experiment was to know the effect of vitamin C on gonadal development of giant freshwater prawn (Macrobrachium rosenbergii) broodstock. Female broodstock of 30-60 g and male broodstock of 40-70 g average body weight were used in this experiment. The broodstock were fed with different dose of vitamin C in feed as 0; 0.05; 0.10; and 0.15% at 3-4% of biomass weight per day for 3 months. Gonado Somatic Index (GSI) value obtained from the diet with 0.15% of vitamin C was significantly different from others (P0.05). The supplementation of vitamin C in the diet of giant freshwater prawn broodstock is important for gonadal development.
PERKIRAAN PADAT TEBAR OPTIMUM BERDASARKAN KEBUTUHAN OKSIGEN TERLARUT PADA IKAN KERAPU TIKUS (Epinephelus cromileptes) DAN KERAPU MACAN (Epinephelus fuscogutattus) Arif Dwi Santoso; Wahyu Purwanta
Jurnal Perikanan Universitas Gadjah Mada Vol 10, No 1 (2008)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8935

Abstract

The objective of this research was to find out the optimum stocking density of Grace Kelly grouper (Epinephelus cromileptes) and Tiger grouper (Epinephelus fuscogutattus) based on the dissolved oxygen budged.The experiment of fish respiration and general oceanographic surveys were conducted in aquaculture area of Hurun Bay, Lampung, in June 2003. The main equipment, namely transparant fish chamber that equipped with dissolved oxygen (DO), temperature sensor and a pump were constructed to measure the DO consumption of groupers. Environmental parameters of Hurun Bay estuary, such as DO, temperature, water-river supply, turbidity, salinity and water current were monitored at the site of 13.5 m3 floating net cage. The range and average of DO inside the cage was 3.68 – 6.76 (5.35) mg/L with water temperature 28.64 – 29.72 (29.09)0C, salinity 32.69 – 33.0 (32.94)o/oo and turbidity 0.27 – 13.62 (1,15) NTU, respectively. Inflow water rate of cage was 72 m3/hr and current velocity 2.3 - 5.1 cm/s. The respiration rate of juvenile and smaller were higher than adult fish. The exponential functions of optimum stocking density was found for E. cromileptes and E. fuscogutattus Y = 2806 X -0.8924 and Y = 1505.6 X -0.632 , respectively. There are two ways in order to increase stocking density, namely extention in area and increasing in volume of cage. On the base of DO budged, an estimation optimum stocking density for E. cromileptes was 134 ind/m3 for fish 50 g in average, 32 ind/m3 for fish 200 g and 8 ind/m3 for fish more than 1200 g. Meanwhile the optimum stocking density for E. fuscogutattus was 176 ind/m3 for fish 50 g in average, 63 ind/m3 for fish 200 g and 17 ind/m3 for fish more than 1200 g.
The Application of Response Surface Methodology (RSM) on the Optimization of Catfish Bone Calcium Extraction Susana Endah Ratnawati; Nurfitri Ekantari; Rizky Wana Pradipta; B L Paramita
Jurnal Perikanan Universitas Gadjah Mada Vol 20, No 1 (2018)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1104.27 KB) | DOI: 10.22146/jfs.35663

Abstract

This study was designed to determine the optimum conditions on catfish bone calcium extraction through Response Surface Methodology (RSM) which used factorial design and 13 treatments. Tests were used to know the influence of independent variables (solvents concentrations and treatment time) on the calcium content of bone flour. As a result, linear models were used as response prediction. Maximum response was obtained by calcium extraction using 5% NaOH during 30 minutes or 11.64% HCl within 58 minutes. It is shown that calcium content were 15.74-17.46% with more than 87.5% accuracy level. Calcium extraction using 5% NaOH during 30 minutes produced flour which has Ca/P ratio 3:1, maximum yield and whiteness level. Low protein and moisture content might result in the long shelf life of catfish bone flour.
Rekayasa Teknologi Peningkatan Produksi Biomas Kerapu Macan (Ephinephelus fuscoguttatus) Melalui Penambahan Enzim Fitase Dalam Pakan Buatan Diana Rachmawati
Jurnal Perikanan Universitas Gadjah Mada Vol 14, No 2 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9116

Abstract

This study aims to examine the effects of phytase enzym in artificial feed on gowth, feeding usage and survival rate of brown marbled grouper (Ephinephelus fuscoguttatus) and to determine the optimum dose of phytase enzym in artificial feed on growth and feeding rate of brown marbled grouper (Ephinephelus fuscoguttatus) . Methodology used in this study was laboratory treatments with complete random design. The study consisted of four treatments and three repetitions. Treatment A (0 mg/kg of feed), B (500 mg/kg of feed), C (1000 mg/kg of feed), and D (1500 mg/kg of feed). Examined parameters were absolute weight growth, specific growth rate, feeding usage (feed and protein conversion ratio efficiency), survival rate and water quality. Varian analysis was used to analyze the data and Double Duncan Area Test was used to test the treatment differences. The results show that the treatments significantly (P<0.05) affected on the grwoth and feeding usage; however, they did not significantly (P>0.05) affect on the survival rate of brown marbled grouper (Ephinephelus fuscoguttatus). The optimum dose of phytase enzym for feeding usage and the growth of brown marbled grouper was 500-1000 mg/kg of feed. The water quality was still in the viable range for brown marbled grouper cultivation.
Pengaruh Cara Booster terhadap Efikasi Vaksinasi Oral dengan Debris Sel Aeromonas hydrophila pada Lele Dumbo (Clarias sp.) Dini Siswani Mulia; Rachmansyah Rachmansyah; Triyanto Triyanto
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 1 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.161

Abstract

The aims of this research were to evaluate the effect of booster on the efficacy of vaccination with cell debris of Aeromonas hydrophila. Catfish (Clarias sp.) (10-13 cm of total length) were used for experiment with 4 treatments, i.e. (1) OS: oral vaccination and injection booster; (2) OO: oral vaccination and oral booster; (3) OR: oral vaccination and immersion booster; (4) without vaccination and booster (control). Booster was conducted one week after vaccination. The challenge test was conducted two weeks after booster. The results showed that the survival rate, Relative Percent Survival (RPS), Mean Time to Death (MTD), and antibody titer of OS treatment was significantly different (P<0.05) with OO, OR, and control. The survival rate and RPS of fish vaccinated by OS treatment reached 100%. The highest antibody titer was 2048 for OS treatment. The result sugested that oral vaccination followed by booster injection was the most effective method of vaccination.
Sasi in Kei Island: Transformation of Coastal Resources Managementby Community in Tanimbar Kei Island, Maluku, Indonesia Anes D. Jayanti; Katsuya Osozawa
Jurnal Perikanan Universitas Gadjah Mada Vol 16, No 1 (2014)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9126

Abstract

Sasi is a local Indonesian traditional resources management system, which manages responsibilities and marine tenure rights in Maluku. Dwellers have been using this system for over 400 years and it consists of spatial and temporal prohibitions on harvesting crops. Sasi was viewed as an appropriate method to achieve harmony between man and nature. It has been noted that sasi has been affected by many factors. These factors have allowed sasi to exist in some areas and become extinct in other areas, which are very essential indicators when considering how to effectively achieve sustainability. Studyingthe factors that transformedsasi, understanding villagers’ perception and reaction to sasi’s transformation and how they planned to sustainably manage their natural resources will support the community based management model for eastern Indonesia. This research was conducted in Tanimbar Kei Island, which actively follows the rules of sasi. To determine the effectiveness of sasi in terms of social and environmental sustainability, demographic, social, politic and economic factors were studied. This study used the triangulation method, which consists of literature studies, area studies, in-depth interviews and questionnaires. The data was analyzed with qualitative analysis, institutional analysis and sustainability analysis. The results show a change in perceptions and community institutions. The dominant factor affecting sasi is the political aspect, especially concerning policy autonomy and assistance from NGOs. The community trust in sasi and other community members ensures that sasi’s transformation does not cause it to lose its identity and function.
PEMASARAN IKAN SEGAR AIR TAWAR DI PROPINSI DAERAH ISTIMEWA YOGYAKARTA Sukardi Sukardi
Jurnal Perikanan Universitas Gadjah Mada Vol 3, No 1 (2001)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8863

Abstract

The special region province of Yogyakarta (DIY) has  five regencies with different natural resources to support the development of fishery product. Therefore, fishery product especially fish was distributed from surplus regencies to the other regencies which produced less quantity of the product. The objectives of this study were to know the market structure, market channel, price margin and fluctuation. The study was conducted using analytic discriptive method. Data were collected by survey in 5 regencies in DIY province, covered subjects such as wholesaler, retailer, dealer, farmer (producer) and consumer. Results of this study indicated that (1) market structure in wholesaler level was oligopoly, but in the retailer level was free market. The retailers had stronger relationship to wholesaler  specially for keeping continuity of fish supply, (2) fish market channel and price margin depending on fish species and location of markets, (3) prices fluctuation was determined by supply and demand mechanism. The average price margins in wholesalers and retailer ranged from  10  to 15 and 10 to 20%,  respectively,  (4)  marketing of fresh freshwater fishes were still consentrated in the city and its surrounding area. Comparing with the other regencies in DIY, Yogyakarta Regency (Kotamadya Yogyakarta) had the largest demand for freshwaterfish which was dominated by cat fish (lele dumbo).
EFISIENSI DAN ENERGETIKA PENETASAN KISTA ARTEMIA (Artemia salina) PADA SALINITAS MEDIA YANG BERBEDA Endah Heryastuti; Sutrisno Anggoro; Subandiyono Subandiyono
Jurnal Perikanan Universitas Gadjah Mada Vol 18, No 1 (2016)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.25624

Abstract

Hatching rate of Artemia salina cysts in the hatching process is variable due to many factors. Osmolarity of the medium is one of the factors determining hatching process of A. salina cysts. The purpose of this study is to assess the hatching process of A. salina cysts in a various osmotic condition on the hatching energetics efficiency and rate. The experimental design used was a 2 x 5 factorial completely randomized design. The first factor is an addition of chlorine (non-decapsulation and decapsulation) and the second factor is osmolarity of medium (640.27; 787.02; 901.76; 1080.51 and 1227.25 mOsm.L-1H2O). The results showed that hatching of A. salina cyst on various osmotic condition has significantly differed the hatching rate. No significant differences in the hatching energetics efficiency were obtained from each experimental groups. Media with osmolarity level of iso-osmotic to hyperosmotic (901.76-1227,25 mOsm.L-1H2O) provides a high hatching rate. Energetics efficiency of artemia cysts hatching is ranged from 640.27 to 1227.25 mOsm.L-1H2O in both hypoosmotic, isosmotic and hyperosmotic media. 
ISOLASI DAN KARAKTERISASI BAKTERI PENDENITRIFIKASI YANG DIISOLASI DARI LUMPUR KAWASAN MANGROVE Triyanto Triyanto; Alim Isnansetyo; Irfan D. Prijambada; Jaka Widada; Duranta D. Kembaren
Jurnal Perikanan Universitas Gadjah Mada Vol 10, No 1 (2008)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8912

Abstract

The aim of this research is to isolate denitrifying bacteria which have the highest activity to reduce nitrate. The sources of the denitrifying bacteria were mangrove sediment collected from Cilacap Regency, Central Java and Indramayu Regency, West Java. Basalt medium containing KNO3 as a source of nitrogen was used for isolating the denitrifying bacteria. Double layer agar was used for making anaerob condition. Fourty-one isolates were obtained at the first step of the isolation, 29 of them have nitrate reduction activity at a range of 0.77-95.62%. Three isolates, i.e. D19.2, DR2.1 and D27.3 having the highest activity were selected for further examination. The selected isolates were characterized and identified. Characterization includes colony and cell morphology, Gram staining, motility, spore staining and biochemical tests as catalase and oxidase. Identification was done by using profile matching to Bergey’s Manual of Determinative Bacteriology. The results indicate that isolate D19.2 and D27.3 have similarities to the characters of genus Listeria, whereas isolate DR2.1 has similarities to the characters of genus Propionibacterium. All of the selected isolates were able to grow in a medium having NaCl concentration at a range of 0.5-3.5% and pH range of 5-8. Observation of nitrate reduction ability of the isolates during five days incubation shows that isolate DR2.1 has the highest denitrifying activity. The selected isolates can be used as bioremediation agents for controlling nitrate pollution in brackish water pond.

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