Interpopulation crossbreeding of farmed and wild African catfish Clarias gariepinus (Burchell 1822) in Indonesia at the nursing stage

Aquat. Living Resour.
Volume 29, Number 3, July-September 2016

Interpopulation crossbreeding of farmed and wild African catfish Clarias gariepinus (Burchell 1822) in Indonesia at the nursing stage

Ade Sunarma1,2a, Odang Carman1, Muhammad Zairin Jr.1 and Alimuddin Alimuddin1
1 Department of Aquaculture, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Dramaga Campus, 16680 Bogor, West Java, Indonesia
2 National Freshwater Aquaculture Center, Ministry of Marine Affairs and Fisheries, Republic of Indonesia, Jalan Selabintana 37, 43114 Sukabumi, Indonesia
a Corresponding author: sunarma@gmail.com

Received: 23 May 2016
Accepted: 14 September 2016

Abstract
Introduced African catfish Clarias gariepinus (Burchell 1822) have been cultivated in Indonesia since 1985 and have made a significant contribution to aquaculture production. Unfortunately, the rapid development of catfish farming was not accompanied by proper genetic improvement of broodstock and this led to poor production performances. A method that can potentially provide rapid improvement in the genetic quality of broodstock is the crossbreeding technique. The present study evaluated growth and survival performances up to 81 days post-hatching (nursing stage) of reciprocal interpopulation crossbreeds generated from five existing introduced African catfish populations in Indonesia, i.e. from Indonesia, Egypt, Kenya, the Netherlands and Thailand. Artificial spawning was applied to form five purebred populations and 20 crossbreed populations. There were significant differences in body length growth (specific growth rate – SGR), survival rate (SR) and number of over-size fish (OS) averages. The Egypt female × Netherlands male (EN) crossbreed showed the best performance with cumulative SGR, SR, and OS of 9.69 ± 0.03%, 63.98 ± 6.75% and 0.22 ± 0.04%, respectively. The result also revealed a correlation between the OS and the SR; the higher the OS, the lower the SR. This correlation tended to be weak at the sequential nursing stages. Our study suggested that the EN crossbreed has high potential to improve offspring quality in the near future.
Key words: African catfish / interpopulation crossbreed / growth variation / survival

© EDP Sciences 2016

http://dx.doi.org/10.1051/alr/2016026

Budidaya Belut tanpa Media LumpurWater Based Cultivation of Swamp Eel


Kajian Teknik Budidaya Belut (Monopterus albus) Tanpa Menggunakan Media Lumpur

Abstrak

Di Indonesia, pengembangan budidaya belut secara intesif belum banyak dilakukan. Keterbatasan pengembangan belut tersebut diduga akibat masih relatif mudah mendapatkan belut dari hasil tangkapan alam dan belum adanya pengembangan teknologi budidaya yang dapat diaplikasikan di masyarakat. Pada perekayasaan ini, dilakukan uji adaptasi belut pada wadah terkontrol dan pemeliharaan belut pada bak plastik dan hapa yang disimpan dalam kolam. Bak plastik hanya menggunakan air tanpa menggunakan media lumpur sedangkan hapa dipasang menggantung di dalam kolam. Selama pemeliharaan belut diberi campuran makanan buatan dan makanan alami.
Hasil kegiatan menunjukkan belut dapat beradaptasi pada air bersih dengan beragam bahan pelindung, diantaranya potongan pipa paralon, tanaman air, serat karung dan tanpa pelindung. Belut juga dapat dipelihara pada wadah bak plastik dan hapa. Selama pemeliharaan, belut tidak menunjukkan respon stress berdasarkan indikasi warna tubuh dan kadar glukosa darah. Pemeliharaan pada hapa berpeluang untuk terus dikembangkan dibandingkan pada bak plastik berdasarkan tingkat kelangsungan hidup yang dicapai. Namun demikian, untuk proses budidaya masih diperlukan kajian mengenai pakan yang sesuai untuk pertumbuhan belut.
Kata Kunci: Belut, Budidaya, Tanpa Lumpur

Dipresentasikan pada Seminar Hasil Penelitian Program Hibah Penelitian bagi Peneliti dan Perekayasa Departemen Kelautan dan Perikanan Jakarta, 9 – 11 Desember 2009



A Study of Water Based Cultivation Technique on Swamp Eel (Monopterus albus)

Abstract
Intensively swamp eel culture has not been developed in Indonesia. Limitation on eel culture assumed correlated to easiness on capture and a lack of adaptive technique could be applied in fisherfolk. The adaptation test of swamp eel on controlled tank and the water based cultivation on plastic tank and hapas settled in pond have been done. During both research, swamp eel were fed moisture commercial feed and natural feed mixture.
The result showed swamp eel adapted to clear water with varied shelter, such as pipe, aquatic plant, plastic fiber or without shelter. Swamp eel adapted to cultivate on plastik tank or hapas. There are no stress responses based on body color indication and blood glucose level. based on survival rate achieved, water based cultivation on hapa more suggested to developed than plastic tank. However, further studies should be done to establish a cultivation techniques especially on appropriate feed.
Keywords: Swamp Eel, Aquaculture, Water Based Cultivation

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Budidaya Sidat di HapaEel Culture in Hapas


Variasi Padat Tebar Fingerling pada Pemeliharaan Sidat di Hapa

Abstrak

Meskipun kebanyakan spesies sidat ditemukan di perairan Indonesia, hingga saat ini belum ada usaha budidaya secara komersial di Indonesia. Kondisi ini disebabkan karena kurangnya teknik budidaya yang aplikatif baik pada tahap pendederan maupun pembesaran. Untuk mendapatkan teknik budidaya sidat Indonesia Anguilla bicolor bicolor yang dapat diterapkan pada skala kecil, kegiatan pembesaran sidat sudah dilakukan pada hapa yang dipasang di kolam (hapa-kolam) dan di jaring apung (hapa-jaring). Pengaruh perbedaan padat tebar terhadap kelangsungan hidup dan laju pertumbuhan telah diamati.
Fingerling dengan bobot awal 74,07 – 86,02 g/ekor dipelihara dengan padat tebar 1.000 g/m3 dan 2.000 g/m3 pada hapa-kolam selama 3 bulan, dan fingerling dengan bobot awal 67,40 ± 17,36 g/ekor dipelihara dengan padat tebar 1.000 g/m3, 2.000 g/m3 dan 3.000 g/m3 pada hapa-jaring selama 5 bulan.
Pada akhir periode pemeliharaan, tidak terdapat perbedaan nyata yang dapat diamati pada kelangsungan hidup dan laju pertumbuhan antara padat tebar baik pada hapa-kolam maupun hapa-jaring. Pada hapa-kolam, kelangsungan hidup dan laju pertumbuhan masing-masing adalah adalah 97,85 – 98,15% dan 0,89 – 1,18. Pada hapa-jaring, kelangsungan hidup pada masing-masing padat tebar adalah 66,34±5,26 %, 51,70±0,82 % and 56,52±25,46 % dan laju pertumbuhan adalah 0,83±0,01, 0,84±0,06 and 0,88±0,09.

Kata Kunci; Anguilla bicolor bicolor, pembesaran, hapa, sidat Indonesia

makalah dipresentasikan pada KONFERENSI AKUAKULTUR INDONESIA 2009, Masyarakat Akuakultur Indonesia, Yogyakarta, 27 – 29 Oktober 2009

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Fingerling Stocking Densities Variation on Eel Culture in Hapas

Abstract

Although mostly eel species found in Indonesian waters, currently there is no commercial aquaculture of eels in Indonesia. This is mainly due to a lack of applicable aquaculture technique to seed nursing and growing up. To establishing culture system of Indonesian eel Anguilla bicolor bicolor that could be applied in small scale aquaculture, we performed eel growing up in hapas settled in pond (hapa-pond) and in floating net cage (hapa-cage). The effect of difference stocking density on survival and growth was observed.
Fingerlings, initial body weight 74,07 – 86,02 g/fish, were reared at stocking density 1.000 g/m3 and 2.000 g/m3 in hapa-pond over a 3-months period and fingerlings, initial body weight 67,40 ± 17,36 g/fish, were kept at stocking density 2.000 g/m3, 3.000 g/m3 and 4.000 g/m3 in hapa-cage over a 5-months period.
At the end of the rearing period, no significant differences were observed on survival and growth rate between stocking densities either in hapa-pond or hapa-cage. In hapa-pond, survival and growth rate were 97,85 – 98,15% and 0,91 – 1,21, respectively. In hapa-cage, survival in difference stocking density were 66,34±5,26 %, 51,70±0,82 % and 56,52±25,46 %, respectively and growth rate were 0,83±0,01, 0,84±0,06 and 0,88±0,09, respectively.

Keywords: Anguilla bicolor bicolor, growing up, hapas, Indonesian eel

paper presented at INDONESIAN AQUACULTURE CONFERENCE 2009, Indonesian Aquaculture Society, Yogyakarta, 27 – 29 October 2009

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