Plasma testosterone levels in the male rhesus: influences of sexual and social stimuli.
Four adult male rhesus monkeys were provided access individually to a group of receptive females. Each male assumed dominance and engaged in frequent copulations. Plasma testosterone levels increased two- to threefold during this period. Next, each male was subjected to sudden and decisive defeat by a large all-male group, and plasma testosterone fell following this experience. Two males were later reintroduced to the females, and plasma testosterone rose rapidly to the previous elevated levels.
D000374:Aggression; D000818:Animals; D001522:Behavior, Animal; D005260:Female; D006120:Grooming; D000882:Haplorhini; D006801:Humans; D008251:Macaca; D008297:Male; D012737:Sex Factors; D012726:Sexual Behavior, Animal; D012930:Social Dominance; D013739:Testosterone / Q000097:blood*
D013739:Testosterone