Castration accelerates the rate of onset of photorefractoriness in the canary (Serinus canarius).
D000818:Animals; D002171:Canaries / Q000502:physiology*; D002369:Castration; D005640:Follicle Stimulating Hormone / Q000097:blood; D006801:Humans; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D010775:Photic Stimulation; D013737:Testis / Q000502:physiology*
D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone