title: Environmental and endocrine factors influencing annual changes in sexual potency in primates.
mesh_terms: D000818:Animals; D001683:Biological Clocks; D002369:Castration; D004542:Ejaculation; D004777:Environment; D004967:Estrogens / Q000494:pharmacology / Q000502:physiology*; D005260:Female; D000882:Haplorhini; D008253:Macaca mulatta; D008297:Male; D012621:Seasons; D012726:Sexual Behavior, Animal / Q000187:drug effects; D013045:Species Specificity; D013739:Testosterone / Q000494:pharmacology / Q000502:physiology*
chemical_list: D004967:Estrogens; D013739:Testosterone