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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 15, No 1 (2013)" : 6 Documents clear
TINGKAT PEMANFAATAN SUMBER DAYA IKAN HASIL TANGKAPAN DI PERAIRAN JEMBER Ariesia A. Gemaputri
Jurnal Perikanan Universitas Gadjah Mada Vol 15, No 1 (2013)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9094

Abstract

The purpose of this research was to determine the Maximum Sustainable Yield and Catch Per Unit of Effort as a management tools to solve the fi sh capture in the waters of Puger sub-district, Jember district. This research was conducted by direct observation method in the fi eld, and collected the statistical data from the Animal, Fisheries and Marine Department of Jember, and also from Fishing port of Puger. The statistical data as seconday data was obtained in time series from 2005 to 2011 (7 year), namely fi sh production and catching effort, then it was analyze dusing the Schaefer method to fi nd thevalue of MSY and CPUE. The MSY was analyzed using regression formula Y = a – bX (Y= CPUE, X= effort). The results showed the CPUEin the year 2007 was the highest approximately 23.47kg/trip. The Lowest CPUE was   occurred in the year 2005 approximately12.38kg/trip. Based onthe regression of Y= 33.213 -0.00004X, the MSY was found at 6,894,396.1kg/year,while the maximum catch effort was 207,581.25 trips/year
INDEK BIOTIK FAMILI SEBAGAI INDIKATOR KUALITAS AIR SUNGAI GAJAHWONG YOGYAKARTA Djumanto Djumanto; Namastra Probosunu; Rudy Ifriansyah
Jurnal Perikanan Universitas Gadjah Mada Vol 15, No 1 (2013)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9095

Abstract

The purpose of this research was to determine water quality level of Gajahwong River, Yogyakarta with the present of macroinvertebrate as biologycal indicators. The sampling was conducted in the Gajahwong River fl ow from Pakem subdistrict in Sleman regency to Pleret subdistrict in Bantul regency. There were six sampling stations, and sampling was conducted once a week for two months from mid October to December 2011. Samples of macroinvertebrate were collected by poking substrate in front of surber net mouth so that macroinverterbrate were drifted into surber and trapped in pocket net. Samples were preserved in 5% formaldehide solution then identifi catifi ed and anlyzed in the laboratory.The species number of macroinvertebrate were analyzed as biotic index, such as diversity index, evenness index, dominance index and biotic family index (BFI). Environment parameter measured include physical and chemical properties. The physical parameter collectednamely subtrate type, river depth and stream width, fl ow velocity, temperature and total suspended solid (TSS). The chemical parameter collected namely dissolved oxygen, free CO2, alcalinity,organic matter and pH. The results showed that fl ow rate was varied 0.51-0.80 m/det decrease to downstream direction.The water depth was ranging from 19.9 to 49.8 cm tend to increase downstream direction. Total suspended solid (TSS) was ranging from 8.5 to 14.2 mg/l and tend to be higher in the central city of Yogyakarta. Dissolved oxygen concentration was 6.0-7.2 mg/l while CO2 was 0.7-1.9 mg/l. Organic matter was 22.8-25.1 mg/l and pH was in the range of neutral. The density of macroinvertebrate was 88 individual/m2, the taxa number in each station was 7-12 species, diversity index was 1.48-2.09, evenness index 0.76-0.85 and dominance index was 0.10-0.27, and there was not found dominance organism among the stations samplings. The highest density was Limnaea tranculata and Potamopyrgus jenkinsi. Index biotic family ranging from 5.95 to 6.64 showing the water environment was poor and there has been pollution caused by garbage disposal of communities surround the river also waste disposal from resident along the watershed.
ANALISIS MORFOMETRIK DAN MERISTIK NILA (Oreochromis sp.) STRAIN LARASATI F5 DAN TETUANYA Muhotimah Muhotimah; Bambang Triyatmo; Susilo B. Priyono; Toni Kuswoyo
Jurnal Perikanan Universitas Gadjah Mada Vol 15, No 1 (2013)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9096

Abstract

Cross-breeding between Janti’s Black Tilapia (female parent) and Janti’s White Tilapia (male parent) has been performed by Institution of Germination and Freshwater Fish Farming which is located at Janti Village – District of Klaten and produced Tilapia Larasati (Red Tilapia Strain Janti) F5. This study aimed to compare the Tilapia Larasati F5 and it parents based on morphometric and meristic characters, and to know the length-weight relationship of three strains of tilapia. Analysis of morphometric characters performed by Principal Component Analysis (PCA) while the meristic character analyzed descriptively by reviewing the literature. Kinship of three strains were tested by cluster analysis while length-weight relationship analysis was conducted to determine the pattern of fi sh growth and condition factor . The scatter plot results of the 12 morphometric characters showed that Tilapia Larasati F5 has a similar body form with Janti’s Black Tilapia and has a slightly different form of Janti’s White Tilapia especially in the part of head. Tilapia Larasati F5 and Janti’s Black Tilapia obtained on a longer body, longer forehead, longer jaw (big mouth), and long face and long nose. It result supported by cluster analysis which showed that Tilapia Larasati F5 has a closer kinship distance to Janti’s Black Tilapia viewed from morphometric characters. Analysis of meristic characters showed that the number of scales on the dorsal fi n in front of the Tilapia Larasati F5 and Janti’s Black Tilapia amounted to more than the Janti’s White Tilapia. Third tilapia strains had isometric growth pattern. Analysis of the value of condition factor indicates that Tilapia Larasati F5 has the best body condition.
GENETIC GAIN DAN DIFFERENTIAL SELECTION CALON INDUK NILA PUTIH (Oreochromis sp.) JANTI STRAIN SINGAPURA F5 UMUR 5 BULAN YANG DIPELIHARA DI KOLAM AIR DERAS Yuliana S. Rahayu; Bambang Triyatmo; Murwantoko Murwantoko; Toni Kuswoyo
Jurnal Perikanan Universitas Gadjah Mada Vol 15, No 1 (2013)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9099

Abstract

The purpose of this research was to observe the genetic gain value of 5 months white tilapia breeders of fi fth generation (F5) Singapore strain (ss) Janti compared with fourth generation (F4) and to revealed the differential selection value of 5 months white tilapia breeders of F5 ss Janti from average weight of top 100 compared to average weight of the population. Research was done for 5 months white tilapia (Oreochromis sp.) breeders of F5 ss Janti. The tilapia cultured in running water system for a month. The research performed for 5 months white tilapia breeders of ss Janti through individual selection method (selective breeding). The white tilapia breeders ss strain used in this research consisted of 400 male and 400 female. The selection of the white tilapia was done randomly. Parameter measured included total weight, length, survival rate, feed amount and water quality for culturing. The result showed that the F5 had increased growth weight of each individual with genetic gain value against the F4 was 30.12 % for the male and 27.92 % for female. The genetic gain value was better than several other selective breeding of tilapia before. The top 100 average weight of the 5 months white tilapia Janti breeders of F5 ss strain (184.03 ± 22.87 g to 224.88 ± 24.31 g) was  higher than average weight of the population (131.27 ± 38.98 g to 163.31 ± 47.17 g). The differential selection value of white tilapia breeders was 37.70 g for male and 40.19 g for female. The weight of male tilapia population was less various than female ones.
KAJIAN PRANATA MANGSA SEBAGAI PEDOMAN PENANGKAPAN IKAN DI SAMUDRA HINDIA SELATAN JAWA Suwarman Partosuwiryo
Jurnal Perikanan Universitas Gadjah Mada Vol 15, No 1 (2013)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (79.88 KB) | DOI: 10.22146/jfs.9097

Abstract

Pranata mangsa is one form of local wisdom and cultural heritage whisch is slowly forgotten and should remain preserved and developed using scientific principles. This study was aims to assess the suitability of the pranata mangsa that have been used in the field, examines the differences in the catch per effort and incomes between ship captain who use the pranata mangsa, who only occasionally use the pranata mangsa and do not use pranata mangsa. Primary and secondary data collection was conducted using a survey method. Determination of the respondents conducted by proportional stratified random sampling. The primary data obtained from interviews with respondents in the form of data signs of nature, types of fish cathced, fishing gear, fishing trip and production data. Secondary data were obtained from the reference form the provincial fisheries statistics (East Java, Yogyakarta, Central Java), Fishery Port (Prigi, Sadeng, Cilacap) and Bakosurtanal. The study was conducted in the Indian Ocean in the southern of Java. The results showed that the natural signs of pranata mangsa that have been used was suitable in Prigi and Cilacap and were less suitable for Sadeng. The catch per unit effort from ship that did not used pranata mangsa was higher (5829.14 kg/ship/year) than ship that used the pranata mangsa (5219.79 kg/ship/year) and ship that only occasionally used the pranata mangsa (4,890.74 kg/ship/year). Revenue of ship that used pranata mangas (IDR. 196,282,199.00/ships/year) was higher than the income from ship that did not used the pranata mangasa (IDR. 131,145,173.00/ ships/year) and from ship that only occasionally using institutions prey (IDR. 111,405,847.00/ships/year). Pranata mangsa that had been used need improvements to be used in the Indian Ocean in the Southern of Java. Improved pranata mangsa need to be socialized in order to increase catch per unit effort and income of the ship captain, as well as the need for additional of more suitable fishing gear.
ANDROGENESIS DIHASILKAN DARI BERBAGAI LAMA IRADIASI ULTRAVIOLET DAN BERBAGAI WAKTU KEJUT PANAS PASCA FERTILISASI PADA TELUR IKAN NILEM (Osteochilus hasselti CV) Tiwuk Windari
Jurnal Perikanan Universitas Gadjah Mada Vol 15, No 1 (2013)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (136.77 KB) | DOI: 10.22146/jfs.9098

Abstract

Androgenesis, biotechnology involving the production of the whole individual chromosomes that derived from the male brood stock as efforts to meet the quality of brood stock fulfillment. Androgenesis involves two phases, the inactivation of the genetic material of eggs, can be irradiated using ultraviolet (uv) rays and diploidization of zygote stage using heat shock at 40oC. The study reported androgenesis of shark minnow fish through two stages of various doses of UV inactivation, followed by the diploidization at various lengths of times of heat shock at 40oC after fertilization. Objectives of the research were to determine: (1) the effectiveness of inactivation of TUV 254 nm phillips 15 watt with 15 cm distance using various time of irradiation (as the dose) i.e: 1, 3, or 5 minutes at shark minnow fish and 2) the effectiveness of diploidization by heat shock at 40oC for 90 seconds at the various of time i.e: 15. 20 or 25 minutes after fertilization. This experimental study was complete randomized block design, consisting of 13 treatment, i.e: 9 treatment androgenesis using UV irradiation (1, 3 or 5 minute) and then followed by heat shock at 15, 20 or 25 minutes after fertilization (A1 - A9), and 4 treatment as a control that consisting of 1 positive control, ie, without irradiation and without heat shock (K0) and 3 negative controls were irradiated but not heat shock (K1, K2, K3). Variables that be observed are the eggs fertilization, the degree of hatching, the percentage of haploid larvae, the percentage of juvenile survival rate after 28 days of culture. Data were analyzed with one way of variance (ANOVA) using SPSS version 16.0 of Windows Software. The results showed that the UV irradiation dose was effectively activating the genetic material of shark minnow fish, where the most effective treatment was at 5 minutes (9916 J/m2). It proved that heat shock at 40°C for 90 seconds was effective to prevent the first embryonic mitosis diploid androgenesis of shark minnow fish and the most effective treatment was A9 with irradiation for 5 minute and heat shock at 40°C for 90 seconds at 25 minutes after fertilization.

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