Aquat. Living Resour.
Volume 29, Number 3, July-September 2016
|Number of page(s)||8|
|Published online||28 October 2016|
Interpopulation crossbreeding of farmed and wild African catfish Clarias gariepinus (Burchell 1822) in Indonesia at the nursing stage
1 Department of Aquaculture, Faculty of
Fisheries and Marine Science, Bogor Agricultural University,
Dramaga Campus, 16680 Bogor,
2 National Freshwater Aquaculture Center, Ministry of Marine Affairs and Fisheries, Republic of Indonesia, Jalan Selabintana 37, 43114 Sukabumi, Indonesia
a Corresponding author:
Accepted: 14 September 2016
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
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.