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All Journal Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal
Sugiharto Sugiharto
Fakultas Biologi Unsoed
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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Kualitas Air dan Pertumbuhan Ikan Nilem (Osteochilus vittatus) pada Sistem Resirkulasi dengan Media Filtrasi Berbeda Nuning Setyaningrum; Muhammad Hussein Sastranegara; Firda Isdianto; Sugiharto Sugiharto
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 36, No 3 (2019)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (393.302 KB) | DOI: 10.20884/1.mib.2019.36.3.763

Abstract

Nilem (Osteochilus vittatus) is a popular freshwater commodity. Intensive production of nilem is often limited by water quality degradation. Recirculating aquaculture system is known to have advantage over this problem. Zeolites and water spinach (Ipomoea aquatica) are widely used in water remediation effort. This research aimed to find out water quality and nilems’ growth in two distinct recirculating system (zeolite filter based recirculating system; water spinach based recirculating system) as well as the relation between these variables. Furthermore, the difference in water quality and nilem’s growth between the two recirculating system was also evaluated.  The method used was a completely randomized experimental design with three replication. Nilems were reared in recirculating system with a density of 100 individuals for 60 days. Measurement of water quality and nilem’s growth was conducted on day 0, 30, and 60. The measured parameters included water temperature, TSS, DO, CO2, pH, NH3 and nilem’s weight. Analysis of data in was completely done with descriptive method. The result showed that water quality and nilem’s growth in recirculating system using zeolite filter and in recirculating system using water spinach filter was similar in general. Water quality in both recirculating system was sufficient to promote nilem’s growth.
Pengujian Skala Karamba Jaring Apung Benih F2 Lukas (Puntius bramoides) Produk Pradomestikasi (I): Kualitas Telur, Sintasan Benih dan Kemampuan Memijah Priyo Susatyo; Sugiharto Sugiharto
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 31, No 3 (2014)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2014.31.3.306

Abstract

Pre domestication research has been done on fish catches from the Serayu river,  Banyumas, lukas fish (Puntius bramoides) and brek fish (P. orphoides) in natural ponds. The parents as pre domestication product is already successfully demonstrated the ability of adaptive in the new environment in terms of aspects of natural food, has been known to their periodically hormonal profiles, profiles of gametogenesis and spawning capabilities in the new environment (natural pond). Further research aims to determine : (1) The degree of eggs hatching of lukas, (2) survival rate of  F2 seeds and (3) the degree of mortality in the floating net on Serayu river. (4) how long it will take and how the ability of the  post spawning F1 parents to be able to spawn again. Research using survey method. Some units of floating net used for maintenance, testing spawning and growth of parents and seeds of lukas. The results : (1) The degree of eggs hatching between 51%-89%; (2) degree of viability of seeds in floating net  is 54%-92%; (3) while the mortality rate of  seeds 8%-48% and (4) the length of time it takes  male and female parents to reach the next spawning period is ± 6 months. The F1 parents spawn after 6 months on a scale of cages.
Co-Authors Firda Isdianto Muhammad Hussein Sastranegara Nuning Setyaningrum Priyo Susatyo