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Viability of catfish ( Clarias macrocephalus , Gunther) eggs fertilized at varying post‐ovulation times
Author(s) -
Mollah M. F. A.,
Tan E. S. P.
Publication year - 1983
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1983.tb04215.x
Subject(s) - biology , clarias , catfish , fishery , ovulation , fecundity , zoology , fish <actinopterygii> , endocrinology , population , hormone , demography , sociology
HCG‐induced (dose: 2 iug −1 body weight) ovulated eggs of catfish ( Clarias macrocephalus ) remained viable for artificial fertilization up to 10 h post‐ovulation without apparent significant loss in fertility. At 12 h post‐ovulation viability decreased significantly, showing little or no hatching at 20 h. A limit of 10 h between ovulation and egg‐stripping was suggested for this species at an ambient temperature of 26–31° C.