![]() Gonad histology revealed that spermatozoa were always present in the testes which implied continuous spermatogenesis and asynchronous ovarian development pattern was observed in the ovaries. nemurus ranged from 1.14 ± 0.02 % to 7.06 ± 1.40 % and high gonadosomatic indices were recorded in May, August and November. There were significant differences (p < 0.05) in the monthly levels of T, 11-KT and E2. Hormonal profiles of T, 11-KT and E2 showed several peaks which indicated a non-seasonal pattern. 11-ketotestosterone (11-KT) and 17β-estradiol (E2) levels were highest in June and November, respectively. The highest Testosterone (T) value for male was observed in November and that of female was in October. Gonad tissues were observed by using light microscopy. Hormones were measured by Enzyme Linked Immunosorbent Assay. ![]() ![]() Plasma sex steroid hormonal profile and gonad histology were correlated to study the annual reproductive cycle of Hemibagrus nemurus. ![]()
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