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PubMed1980

On the pituitary gland and reproductive cycle of Indian fresh water goby, Glossogobius giuris (Ham.) II. Seasonal changes in the proximal pars distalis and their correlation with the reproductive cycle.

The cells of pars-intermedia and rostal pars distalis in the pituitary gland of Glossogobius giuris (Ham.) do not exhibit marked cytological variations. The Basophil I (gonadotrope) of the proximal pars distalis are found to show prominent organisational changes in respect of various gonadal activities and water temperature. The process of granulation and degranulation in these basophils closely follow the process of maturation of the gonads and spawning of the fish. The release of hormones as evinced by the process of degranulation of the basophils during the spawning period (June to September) results in the evacuation of the gonads.

Animals↗
PubMedDate not supplied

[The characteristics of the reproductive capacity of hybrids of the bison (Bison bison L.) with the domestic cow (Bos (Bos) primigenius taurus). 1. The reproductive capacity of hybrid males].

The hybrid progeny F1 produced by intergeneric crosses of a bison with a domestic cow is characterized by absolute sterility of the male line and fertility of the female line. Crossing of females with fertile males of initial forms permits us to obtain fertile males in the following generations. Any differences in stabilization of spermatogenesis in hybrid males obtained from various crosses and under selection of parental couples were not detected.

Animals↗