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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 23 Documents
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Search results for , issue "Vol 8, No 2 (2006)" : 23 Documents clear
Komposisi Makanan Ikan Selanget, Anodontostoma chacunda, H.B. 1822 (Pisces: Clupeidae) di Perairan Pantai Mayangan, Jawa Barat Mohammad Fadjar Rahardjo; Murniarti Brojo; Charles Parningotan Haratua Simanjuntak; Ahmad Zahid
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.147

Abstract

The research was conducted for six months from December 2003 to May 2004 to investigate the diet composition of chacunda gizzard shad, Anodontostoma chacunda. A total of 773 fishes were captured using gillnet with mesh sizes varying from 1.5 to 3 inches. The fish samples ranged 83–170 mm in length. For food habits analysis, the index of preponderance method was used. The dominant diets in stomach contents were Coscinodiscus, Pleurosigma and Rhizosolenia. There were no differences in diet composition between males and females among the sizes, and among the months. Based on index of electivity, the result showed that the fish preferred Coscinodiscus, Pleurosigma, Rhizosolenia, Gyrosigma, Melosira, Navicula, and Copepoda.
Kandungan Logam Berat pada Kerang Kepah (Meritrix meritrix) dan Air Laut di Perairan Banjarmasin Jovita Tri Murtini; Rosmawaty Peranginangin
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.138

Abstract

Studies on heavy metal content of Meritrix meritrix and surrounding waters as well as the quality of Banjarmasin waters were done. Observation was carried out in June, August and October 2003 at 6 sampling points, 3 stations were 1 mile while 3 others were 2 miles from coastal line. Distance between stations was approximately 1 mile. The samples collected from each station were hard clam (Meritrix meritrix), sea water and sediment. Heavy metals content, Hg, As, Cd, Cu and Pb, in hard clam and mercury content in sea water and sediment were analyzed by atomic absorption spectrophotometer (AAS). The result showed that Hg content of Banjarmasin waters in June, August and October 2003 were 6.05, 3.17, and 4.91 ppb, respectively, indicated that Banjarmasin waters had been polluted by mercury. Whereas the hard clam in Banjarmasin waters contained Hg (1.91 ppb), As (0.88 ppb), Cd (0.22 ppb), Cu (0.46 ppb), and Pb (0.32 ppb) which were still under the maximum concentration for consumable clam.
Komposisi Spesies Ekhinodermata di Perairan Tanjung Pai Padaido, Biak Numfor–Papua Eddy Yusron; Susetiono Susetiono
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.152

Abstract

Total of 31 species of echinoderms, consisted of 10 species holothuroidea, 9 species of asteroidea, 6 species echinoidea and 6 species ophiuroidea have been found in the Tanjung Pai, Padaido-Biak Numfor. The sea cucumbers were relatively common in the sea grass-zone. Based on population density, the sea cucumber was the dominant group and their density was the highest, but their distributions were very scarce. Among the echinoderms found in this study, only sea cucumbers were exposed to the exploitation, since its local market price was still high. Further, the diversity and density of species found at Tanjung Pai were poorer compared to the other place in Indonesian waters, such as Derawan Islands of East Kalimantan
Produktivitas Primer Fitoplankton pada Berbagai Periode Cahaya di Perairan Teluk Kao, Kabupaten Halmahera Utara Yuliana Yuliana
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.143

Abstract

The objective of this research was to know the phytoplankton primary productivity on light periodicities in Kao Bay. The research was conducted from November 2004 to February 2005 in Kao Bay, North Halmahera district. The primary productivity was measured at one station with 4 depths of 0, 5, 10, and 15 m. The oxygen contains in light and dark bottles converted to carbon production were used to measure the primary productivity. The light and dark bottles were incubated in 3 light periodicities, i.e. I (06.00-10.00 am), II (10.00 am-14.00 pm), and III (14.00-18.00 pm), and environmental parameter also measured, namely temperature, salinity, pH, nitrate, orthophosphate, and silicate concentration. The results showed that primary productivity (mgC/m3/hour) range from 60.051 to 341.599, the highest was occurred in II (1076.737) and lowest in I (666.342). The environmental parameters were temperature 30.8-32.20C, salinity 34-36‰, pH 7.62-7.77, nitrate 0.083-0.207 mg/l, orthophosphate 0.009-0.370 mg/l, and silicate 0.000-0.008 mg/l. There were 3 classes of phytoplankton: Bacillariophyceae (14 genera), Cyanophyceae (1 genera), and Dinophyceae (3 genera). It could be concluded that light period has significant influence on phytoplankton primary productivity.
Pengaruh Suplementasi Probiotik A3-51 terhadap Derajat Imunitas Oreochromis niloticus Didasarkan pada Angka Kuman pada Ginjal Setelah Uji Tantang dengan Aeromonas hydrophila dan Aeromonas salmonicida achromogenes Agus Irianto; Hernayanti Hernayanti; Ning Iriyanti
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.126

Abstract

Objectives of this research was to know the effect of probiotic A3-51 supplementation on food to the total number of bacteria in kidney and mortality of Oreochromis niloticus after challenge test with Aeromonas hydrophila and Aeromonas salmonicida achromogenes. This research was consisted of two experiment, the first was to know the highest immunity level of fish based on the number of macrophage and its phagocytic activity. Meanwhile, the second was to know the immunity level of fish challenged with A. hydrophila and A. salmonicida achromogenes by intra-peritoneal injection. The experiment used Completely Randomized Design in triplicates. The result from the first experiment showed that the highest non spesific immune system response, by means number of macrophage, was found 21 days treatment. The second experiment showed that the highest total number of bacteria in kidney and mortality level were 20.23 x 108 cells/g and 46.67%, respectively, both was found in control fish injected intra-peritoneally with A. salmonicida achromogenes.
Fekunditas dan Diameter Telur Ikan Gabus (Channa striata Bloch) di Daerah Banjiran Sungai Musi Sumatera Selatan Safran Makmur
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.148

Abstract

An investigation into fecundities and eggs diameter of snakehead (Channa striata Bloch) in flood plain area of river basin of Musi, South Sumatera has been done from July to December 2002. The fish samples were collected from the fisherman. After measuring body length and weight, the gonads were collected and their maturation were observed. The fecundity counted by gravimetric method. Eggs diameter of fish which have TKG III, IV and V were also observed. The result showed that snakehead in the flood plain area of Musi river have fecundities ranged from 1141 to 16486 eggs with the body weight ranged from 60 to 640 g, gonad weight ranged from 1,15 to 17,04 g, and eggs diameter ranged from 0,65 to 1,34 mm.
Pengaruh Salinitas dan Kondisi Fertilisasi terhadap Persentase Larva Normal pada Kerang Bakau Polymesoda erosa Solander (1786) Ricky Gimin
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.139

Abstract

The mangrove clam (Polymesoda erosa) is edible bivalve and one of potential candidate for aquaculture. Availability of its hatchery technique is important for development of its aquaculture. The objective of this study was to determine the optimum salinity and fertilization factors for the production of normal larvae. Fertilized eggs at density of 10 eggs/ml were incubated under seven salinities, i.e., 0, 5, 10, 15, 20, 25 and 30 ppt at room temperature (26±1°C). The highest percentage of 48 hr normal D-larvae occurred at 20 ppt. The percentage dropped significantly if salinity was below 10 ppt or more than 25 ppt. In other experiments to develop fertilization protocols for this species, the effects of spermatozoa-to-ovocyte ratio, age of gametes, and stocking density of eggs were assessed individually to determine the optimum ratio, age and density for the highest percentage of normal D-larvae. Ten sperms-to-egg ratios, i.e., 5, 10, 50, 102, 5x102, 103, 5x103, 104, 5x104 and 105 at density of 10 eggs/ml, were tested. The highest percentage of normal D-larvae occurred within the range of 5x102 to 5x103 sperms per egg. Significantly low percentages were obtained at treatments below 100 or more than 104 sperms per egg. In the experiment of gamete age, sperms and eggs were mixed for fertilization at different times, i.e., 30 minutes, 45 minutes, 60 minutes, 120 minutes and 180 minutes, after spawning. Freshly spawned sperms and eggs of less than 60 minutes gave the best percentage. When the fertilized eggs were incubated at different densities, i.e., 10, 20, 30, 40, 50, 100 and 200 eggs/ml, the densities up to 50 eggs/ml gave maximum results.
Pemeliharaan Larva Kerapu Bebek (Cromileptes altivelis) dengan Konsentrasi Pewarna Hijau Media Air yang Berbeda Suko Ismi; Wardoyo Wardoyo; Ketut Setyawati; Tridjoko Tridjoko; Jhon H. Hutepea
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.153

Abstract

The purpose of this research was to find the optimum color concentration of water for larval rearing of humbpback grouper (Cromileptes altivelis). The experiment conducted using 12 polycarbonat tanks with volume of 200 l. Initial density of larvae was 10 ind/l. Food grade coloring agent was used to result a green color water solution.  Four different water color concentration were tested as treatments i.e.: A 10 ppm; B 20 ppm ; C 30 ppm and D 40 ppm with three replications. The experiment was conducted for 30 days. The result showed that the highest survival rate was exhibited by C treatment (30 ppm) (P<0.05), the B (20 ppm) and D (40 ppm) treatments were significantly different (P<0.05) compare to A (10 ppm.) The survival rates of larvae at the end of experiment were A (8.2%); B (25.6%); C (40.4%) and D (29.3%).
Studi Pertumbuhan, Mortalitas, dan Tingkat Eksploitasi Ikan Selar Kuning, Selaroides leptolepis (Cuvier dan Valenciennes) di Perairan Pulau Bintan, Riau Achmad Sudradjat
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.144

Abstract

The estimation on population parameters of yellowstriped trevally, Selaroides leptolepis through the analysis of monthly length-frequency distribution was carried out by analyzing sample collected in Bintan waters, Riau from March 1998 to February 1999. Length-frequency data were analyzed by FiSAT program. The results showed that Von Bertalanffy growth parameters, L∞, K and growth performance (Ø’) were 18.0 cm, 1.2 y־¹and 2.59, respectively. Recruitment pattern showed one peak of recruitment. The total mortality (Z) was 4.45 and exploitation rate (E) was 0.48. Estimate results of fishing mortality and exploitation rate were found to be presently above appropriate levels.
Potensi Antibakterial Bakteri Asam Laktat dari Peda, Jambal Roti, dan Bekasam Ninoek Indriati; Indriarto P. Danan Setiawan; Yulneriwarni Yulneriwarni
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.130

Abstract

Isolation of lactic acid bacteria from fermented fish products, peda, jambal roti and bekasam were carried out. Antibacterial activity of lactic acid bacteria was tested using well diffusion method against Escherichia coli, Bacillus cereus, Pseudomonas aeruginosa and Staphylococcus aureus. Twelve isolates of lactic acid bacteria had been isolated. Results showed that isolate A2 from peda was able to inhibit the growth of the 4 testing bacteria with inhibition zones of 6.7 mm for E. coli; 7.3 mm for P. aeruginosa; 8.3 mm for S. aureus and 10.0 mm for B. cereus. Isolate B5 from jambal roti had inhibition zones 11.6 mm for E. coli; 6.0 mm for P. aeruginosa ; 7.3 mm for S. aureus and 13.3 mm for B. cereus ; while isolate C6 from bekasam had inhibitor zones 7.7 mm for E. coli; 6.0 for P. aeruginosa; 8.0 mm for S. aureus and 9.3 mm for B. cereus.

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