Effect of teleost pituitary gonadotropins on the in vitro maturation of carp oocytes

Studies were conducted on the effects of various kinds of teleost pituitary gonadotropins on the in vitro maturation of carp oocytes. It was ascertained that after 24 h of incubation with gonadotropins, the highest percentage of oocytes with the nucleus in the migrating or peripheral position, or of mature oocytes, was observed in the case of ciprinide gonadotropins.Centrifuged hypophysial homogenates of the pike, sea-trout and pike-perch displayed a considerably weaker activity. The results obtained are indicative of a specificity of teleost pituitary gonadotropins.