Reproductive cycle of Salmo irideus Gibbons (Pisces, Salmoniformes) in intensive cultured: microcospic caracterization of ovaries.

Abstract

Five adults female specimens of Salmo irideus Gibbons, were collected every month, during eleven months for microscopic identification of their cyclic gonadal modulation. For microscopic analysis ovary were excised in their medial and caudal portions and fixed in Bowin's fluid. The results showed that the reproductive cycle of the female of S. irideus can be classified as follows: maturing (early and later), ripenning and spent. Microscopical analysis showed that in early maturing there is predominance of ovocytes in initial vitellogenesis; in later maturing the predominance is of ovocytes at the end vitellogenesis; in ripenning these predominance is of mature ovocytes; in the spent, atresic and empty follicles predominate.