Differential Effect of Insulin-Like Growth Factor I on in Vitro Gonadotropin (I and II) and Growth Hormone Secretions in Rainbow Trout (Oncorhynchus mykiss) at Different Stages of the Reproductive Cycle

Abstract The short-term effect of insulin-like growth factor I (IGF-I) on GTH I (FSH-like), GTH II (LH-like), and GH production by cultured rainbow trout pituitary cells was studied in immature fish of both sexes, at early gametogenesis and in spermiating and periovulatory animals. IGF-I had no effe...

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