Abstract
AbstractSpawning biology of hormone induced bagridae catfish, Mystus dibrugarensis was observed in captive condition. Active involvement of male in courtship after 5-9 hr. of hormone administration was observed. Different doses of ovaprim 0.4, 0.6, 0.8, 1.0 ml/kg were used by maintaining 1:1, 2:1 and 3:1 ratio of M:F. All female successfully bred in all the condition in more or less amount. Overall 24.5-77.5% fertilization and 12-76% hatching rate was observed. However, considering the rate of fertilization, and hatching success in the present case, at 0.8 ml/kg body weight and sex ratio 2♂: 1 ♀ seems ideal for induced breeding of M. dibrugarensis. Apart from induced breeding certain reproductive aspects were also studied in the present experiment.
Publisher
Cold Spring Harbor Laboratory
Reference37 articles.
1. A.P.H.A. (1998): Standard methods for estimation of water and waste and water, 20th edition, American Public Health Association, Washington D.C., USA. 1193p.
2. Cyclic Changes in gonadal maturation and histological observations of threatened freshwater catfish “Narikelu” Mystusmonotonus (Jerdon, 1849);Acta Ichthyological Et Piscatoria,2004
3. Azadi, M. A. , M. A. Islam and S. R. Dev (1987): Some aspects of the biology of Mystus vittatus (Bloch): I. Food and feeding habits and fecundity. Proceedings of 12th Annual Bangladesh Science Conference, Bangladesh Association for the Advancement of Science, Dhaka, 36p.
4. The breeding and fecundity of the long rough dab, Hippoglossoides platessoides (Fabr.) and the associated cycle in condition;Journal of Marine Biological Association of United Kingdom,1957