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Journal : Omni-Akuatika

Effectively Of 17α-Methyltestosterone on Tropical Eel, Anguilla bicolor McClelland Masculinization in Different Salinity Culture Rachmawati, Farida Nur; Affandi, Ridwan; Sistina, Yulia
Journal Omni-Akuatika Omni-Akuatika Special Issue 2nd Kripik SCiFiMaS
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

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Abstract

Eel population in nature reaches critical number, so that culture strategy is urgently needed to fulfil the high demand of this fish. A shortcut to get functional male, which proven difficult to be founded from natural catching, is masculinization. This research aimed to induce masculinization of tropical eel, Anguilla bicolor McClelland supplemented with various doses of 17α-methyltestosterone during a month culture in freshwater (0 ppt) or brackish water (10 ppt).  The eel was grouped and fed with supplementation of 17α-methyltestosterone at various doses, depending upon treatments, namely 0 mg Kg-1 diet (control), 40, 80 or 120 mg Kg-1 diet. Eels size were similar, at approximately 16,78 g ± 0,62 in weight and 25,38 cm ± 0,15 in length were either culture in freshwater or brackish during the experiment for eight weeks. Sex gonad, based on anatomical histological structures, Eye Index and Fin Index were measured after time culture treatment achieved, as well as body length, weight, eye diameter and the length of the pectoral fin were measured. Results showed that supplementation 17α-methyltestosterone 80 mg/Kg diet culture in brackish water has the highest number of male (90%).  This study proven that, the hormone was effective for masculinization in eels, It useful for masculinization in eels. Results proved that the 17α-methyltestosterone highly significant (P<0.01) effect on the Eye index (3.63 – 5.14) and Fin Index (3.03 – 4.08) of eels. This study concluded, that 17α-methyltestosterone more effective in improving the number of males in brackish water than in freshwater culture.
The Osmotic Response and Hydromineral Status of Transported Anguilla bicolor bicolor Glass Eels with Various Ratios of Biomass and Water Volume Taqwa, Ferdinand Hukama; Supriyono, Eddy; Budiardi, Tatag; Setiawati, Mia; Utomo, Bambang Priyo; Affandi, Ridwan
Journal Omni-Akuatika Omni-Akuatika Special Issue 2nd Kripik SCiFiMaS
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Original Source | Check in Google Scholar | Full PDF (132.752 KB)

Abstract

This research was conducted to determine the closed transportation system with biomass and water volume ratio that can support the osmoregulation ability of glass eel significantly. Glass eel was obtained from catching activities in the Cimandiri River, Pelabuhan Ratu (mean length 52.40+0.84 mm and weight 0.10+0.01 g) and acclimatized for 24 hours at salinity 6 mg L-1 and temperature 20°C gradually.The research design was a completely randomized design. The applied treatment was glass eel closed transportation system with various ratio of glass eel biomass (kg): water volume (L), i.e. 1:11; 1:12; 1:13; and 1:14 during 24 hours of land transportation and continued with a 3-day recovery period.The water was used refer to the above acclimatization method, with ratio the water part of pure oxygen in a plastic bag was 1:3. The measured parameters include survival rate, osmotic gradient, body hydromineral, and water quality in transport packaging and recovery medium. Survival rates were generated in the high range until recovery period (P<0.05), but the transportation method caused differences significantly (P<0.05) in osmotic response and hydromineral status (sodium, chloride, potassium, and water content), so that it will affect production performance in the next stage of culture. Ratio of glass eel biomass: water volume of 1:13 has been able to support the ability of osmoregulation glass eel to maintain homeostatic condition during the transportation until 3 days of recovery period. There was no drastic decline in physical and chemical value of water in the transport bag so it could reduce the mortality rate for 24 hours.
Co-Authors , Suharsono . Sulistiono . Syafiuddin . Yonvitner, . ., Jimmi Abdul Rahman Singkam Agus Alim Hakim, Agus Alim Agus Oman Sudrajat Agus Salim Agus Suprayudi, Agus Ahlina, Hadra Fi Akhmad Firmansyah, Akhmad Alimuddin Alimuddin Am Azbas Taurusman Andi Gunawan Angelika, Iska Arif Wibowo Asbar Laga, Asbar Atminarso, Dwi Azam B. Zaidy Bahiyah, nFN Bakhris, Vera Dewiana Bambang Kiranadi Bambang Widigdo Batu, Djamar Tumpal Floranthus Lumban Benny Heltonika CECEP KUSMANA Chair Rani Charles PH Simanjuntak Daniel Djokosetiyanto Daniel R Monintja Daniel R Monintja, Daniel Dedi Jusadi Dedi Soedarma DEDI SOEDHARMA DEDY DURYADI DEDY DURYADI SOLIHIN Dedy Duryadi Solihin Dendi Hidayatullah, Dendi Desrita Desrita Didik Wahju Hendro Tjahjo Dietriech G Bengen Dietriech G Bengen, Dietriech Dinar Tri Soelistyowati Djadja S . Sjafei, Djadja Djamar T.F. Lumban Batu, Djamar T.F. Lumban Eddy Supriyono Efriyeldi, Efriyeldi Enang Harris Enang Harris Surawidjaja, Enang Harris Endah Purnamawati, Endah Epa Paujiah, Epa Etty Riani Fachrudin, Ahmad Farida Nur Rachmawati Fauziah, Rika Ferdinand Hukama Taqwa Harpasis S. Sanusi Haryono . Haryono Haryono Haryono, nFN Hayono, Hayono Hedianto, Dimas Angga Henni Syawal Herdiana, Lella Hukom, F. Damianus Ilham Zulfahmi, Ilham IMAN SUPRIATNA Ing Mokoginta Isdradjad Setyobudiandi Ismane, M. Apuk Ismudi Muchsin Jack Mamangke, Jack Jusmaldi, . Jusmaldi, Jusmaldi Jusmaldi, nFN Kadarwan Soewardi Kardiyo Praptokardiyo Kartini, Nidya Kasful Anwar Koeswinarning Sigit Kukuh Nirmala Kurnia Faturrohman, Kurnia Kurniawati H Ekosafitri, Kurniawati La Eddy Latifa Fekri Lenny S Syafei, Lenny Leuwol, Cathrine Ferlianova Lubis, Delismawati Lumban Batu, Djamar Tumpal Floranthus M F Rahardjo M F Rahardjo, M M Mukhlis Kamal, M Mukhlis M. Agus Setiadi M. F. Rahardjo, M. F. M. Zairin Junior M. Zairin Junior Mafatih Devi Safrina, Mafatih Devi Manan, Hardono Mas Tri Djoko Sunarno, Mas Tri Djoko Mennofatria Boer Menofatria Boer Mia Setiawati Mozes R. Toelihere MOZES R. TOELIHERE Mozes Toelihere Muchammad Sri Saeni, Muchammad Muhammad Jamal Muhammad Mukhlis Kamal, Muhammad Mukhlis Mulyadi . Mulyadi Mulyadi Mulyani, Yuli Wahyu Tri Murhum, Mufti Murniarti Brojo Mustakim, Moh Nasmi, Jannesa NASTITI KUSUMORINI Norce Mote, Norce Norman Razieb Azwar Nugroho, Thomas Nur Bambang Priyo Utomo Nurhidayat Nurhidayat Nurhidayat, nFN Nurlisa A Butet, Nurlisa A Nurlisa Alias Butet, Nurlisa Alias ODANG CARMAN Odilia Rovara Purnamawati, , Rahadjo, M F Rahardjo, MF Rahardjo, MF. Rahmadi Azis, Rahmadi Retno Cahya Mukti Riani H, Etty Riri Ezraneti Rita Rachmawati, Rita Robin, , Ronny Irawan Wahju Roza Elvyra Rudhy Gustiano Saddon Silalahi, Saddon SATA YOSHIDA SRIE RAHAYU Siti Nurul Aida, Siti Nurul Siti Sofiah Sjafei, Djadja S. Sjafei, Djadja Subardja Sjafei, Djadja Subardja Soelistyowati, Dinar Tri Sri Murtini Sri Wahyuni Srihadi Agungpriyono Sudarto Sudarto Sukenda Sukenda Sulistiono . Sulistiono Sulistiono Sulistiono, nFN Suradi Suradi Suradi Wijaya Saputra Sutrisno Sukimin Suwardi, Surachman Syarif, Ahmad Fahrul Syarif, Ahmad Fahrul Tarigan, Nurbety Tatag Budiardi Tjahjo Winanto, Tjahjo TRI PRARTONO tri wahyuni Triheru Prihadi, Triheru Triramdani, Nurfitri Tyas, Nanik Mustikaning Utomo, Bambang Priyo Utomo, Nur Bambang Priyo Wahyudi, Setyo Wasmen Manalu Watanabe, Seiichi Wildan Nurussalam, Wildan Yandes, Zulfa Yani Hadiroseyani Yulfiperius, nFN Yulfiperius, Yulfiperius Yulia Sistina Yulintine, Yulintine Yulvian Sani Yuni Puji Hastuti Yunizar Ernawati Yusfiati, nFN Yusnarti Yus Zairin Junior