Pituitary response to LH-RH at different stages of gametogenesis in the rainbow trout (Salmo gairdneri)
1978
WEIL, Claudine | Billard, Roland | Breton, Bernard | Jalabert, Bernard | REINAUD, Pierrette
Pituitary response to LH-RH has been studied in the male and female rainbow trout (Salmo gairdneri) at different stages of gametogenesis. The male was hardly sensitive at the onset of spermatogenesis, but a response occured at the spermatid stage and continued during spermatogenesis and spermiation. We particularly studied the end of the female cycle. Response was low in immature fishes and in the early stages of oocyte maturation, but became stronger at vitelline maturation. The relationships of these responses to plasma and pituitary t-GTH levels are discussed.
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