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Gonadotropic function of the hypophysis and the dynamics of gonadotropin and sex steroids in the blood of the autumn chum oncorhynchus keta in the amur river russian sfsr ussr after the completion of the sexual cycle


, : Gonadotropic function of the hypophysis and the dynamics of gonadotropin and sex steroids in the blood of the autumn chum oncorhynchus keta in the amur river russian sfsr ussr after the completion of the sexual cycle. Voprosy Ikhtiologii 29(5): 823-830

ELISA of gonadotropin and sexual steroid hormone content in the blood plasma of O. keta was used to describe the autumn chum males and females in the beginning of anadromous migration and following the completion of the reproductive cycle, as was the study of pituitary gonadotropocytes. Increased concentrations of gonadotropin, progesterone and testosterone was observed after the completion of the sexual cycle, as was a decreased estradiol level. The most clearly pronounced changes were observed in females. Gonadotropin concentration dynamics coincides with changes in the state of gonadotropocytes and the gonadosomatic index.

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