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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
Viabilitas Sperma Ikan Nilem (Osteochilus hasselti C.V.) Setelah Penyimpanan Jangka Pendek dalam Larutan Ringer Gratiana E. Wijayanti; Sorta B.I. Simanjuntak
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.142

Abstract

The success of induced breeding relies on the availability of viable sperm and eggs. Meanwhile information on viability of post-stripped sperm of the nilem is still limited.  This experimental study was conducted to find out the duration of sperm storage that maintains sperm viability.  The nilem’s milt was diluted in Ringer solution at 0, 10, 100 and 1,000 dilution and kept in the refrigerator (4°C)  for 3, 6 and 9 days.  The sperm viability was assessed by its motility, progressivity and ability to fertilize fresh eggs.  The results showed that the sperm were immotile in either undiluted or diluted in Ringer solution.  Upon activation by diluting in water, the sperm of the control groups as well as the tested groups showed a high motility (>70%) and highly progressive (>3).  The sperm were capable to fertilize eggs as indicated by a high fertilization rate of more than 90%.  The highest hatching rate (HR) was produced by the control groups while HR of milt stored for 3, 6 and 9 days were 60%, 1% and 0%, respectively. Low HR produced by milt stored for 6 and 9 days was resulted from a high proportion of abnormal embryos which led to their mortality around gastrula stage.  It could be concluded that the viability of the nilem’s sperm could be diluted in Ringer solution and kept in the refrigerator as long as for 3 days.
Konsentrasi Unsur Hara pada Media dan Pertumbuhan Chlorella Vulgaris dengan Pupuk Anorganik Teknis dan Analis Sri Amini; Syamdidi Syamdidi
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (111.488 KB) | DOI: 10.22146/jfs.141

Abstract

Research on the effect of technical and proanalyze fertilizers on the growth of Chlorella vulgaris was conducted in triplicates using a culture bottle containing 3 l of sea water at 30 ppt. The culture media were inoculated with Chlorella vulgaris at 104 cells/ml of initial density, lighted at 2000 lux, and incubated at 26°C. Results showed that the highest growth rate of C. vulgaris was obtained in medium added with anorganic proanalyze fertilizer with maximum density of 2.62 x 107 cells/ml at 9 days culture. Ammonia, sulphide, nitrate, nitrite, phosphate, iron, cuper, and cadmium contents were not exceed the maximum limit at the 13-day of culture.
KEGIATAN PENANGKAPAN IKAN DI SUAKA PERIKANAN SUNGAI SAMBUJUR DAERAH ALIRAN SUNGAI BARITO BAGIAN TENGAH, KALIMANTAN SELATAN Prasetyo, Dadiek
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (34.127 KB) | DOI: 10.22146/jfs.8976

Abstract

The objectives of this research were to provide data on fishing gears and methods in fisheries reserve of Sungai Sambujur, South kalimantan. Data were collected by purposive sampling survey method. The result showed that there were 6 fishing gears operated in Sungai Sambujur fisheries reserve: hampang, pengilar, lukah, luntak, rengge and kawat. Fishing gear which was able to catch fish with the most variety was hampang, followed by luntak, rengge, lukah, pengilar and kawat. Fish catching season was from May to December and July was a peak of catching season. On the other hand, the height of water level occured from 2 to 7 m.

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