Influence of breeding periods on the hatchability of Asla
1996
Joshi, P.L. | Igarashi, M. | Nepal, A.P. (Fisheries Research Center, Trishuli (Nepal))
During 1992/93 and 1993/94 Asala (Schizothorax plagiostomus) were manually stripped in two consecutive breeding periods: October/November and February/March at Trishuli Fisheries Research center. The females were checked for ripeness once a week in the first fiscal year and after every 3-4 days in the second fiscal year. Female broods spawned in October/November and in February/March. No spawning occurred in December and January. The survival rate from egg to hatching was higher in October/November and lower in February/March. Hatching time ranged from 10-12 days based on temperature variation which varied from 11-16 degree centigrade. Mean fecundity per kilogram body weight of fish was about 12000 eggs.
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