Effect of continuous light and darkness on the testicular histology of toad (Bufo melanostictus).
Continuous darkness decreases spermatogenesis as well as Leydig cell function whereas continuous illumination suppresses spermatogenesis along with increased Leydig cell activity.
D000818:Animals; D002025:Bufonidae / Q000033:anatomy & histology* / Q000502:physiology; D003624:Darkness; D007985:Leydig Cells / Q000166:cytology; D008027:Light; D008297:Male; D013091:Spermatogenesis; D013737:Testis / Q000166:cytology*