Effect of mammalian gonadotropins on testosterone secretion in male alligators.
Male farm-reared alligators were injected with mammalian FSH, LH, hCG, prolactin, or saline. A blood sample was taken immediately prior to injection of hormone and at 24 h postinjection. Testosterone concentrations in the plasma were then determined by radioimmunoassay. Only the alligators injected with FSH showed a significant increase in plasma testosterone. In a second series of experiments male alligators were injected with ovine LH, ovine FSH, or saline and bled at 0, 2, 4, 16, and 24 h postinjection. Again, only the alligators injected with FSH showed significant increases in plasma testosterone at 16 and 24 h postinjection. Mammalian LH does not appear to stimulate testosterone secretion in male alligators.
D000489:Alligators and Crocodiles / Q000097:blood*; D000818:Animals; D006063:Chorionic Gonadotropin / Q000494:pharmacology*; D005640:Follicle Stimulating Hormone / Q000494:pharmacology*; D007986:Luteinizing Hormone / Q000494:pharmacology*; D008297:Male; D011388:Prolactin / Q000494:pharmacology*; D012104:Reptiles / Q000097:blood*; D013739:Testosterone / Q000097:blood / Q000378:metabolism*
D006063:Chorionic Gonadotropin; D013739:Testosterone; D011388:Prolactin; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone