11-KETOTESTOSTERONE: AN ANDROGEN FOR SOCKEYE SALMON

Abstract

11-Ketotesterone, a hormone in the blood of sockeye salmon, has been shown to have androgenic activity for this species. It influences skin thickness and coloration, flesh pigmentation, and spermatogenesis in the male. The effect of 11-ketotestosterone is not so pronounced in the female but it influences both skin thickness and coloration. Estradiol increased the mass of the female gonads.