On social preference in sexual behavior of Japanese monkeys (Macaca fuscata)

摘要: Sexual interaction patterns between both sexes in a Japanese monkey troop were classified into eight types by taking approach, following and stability of mounting series as indicators. Analysis these pairs several social relation demonstrated the structure preference for sexual partner follows: (1) grooming, genealogical or protecting-depending relations tend to show few interactions each other; (2) males pair co-walking co-eating behaves actively female, but, typical case, female refuses her partner; (3) chasing most active including ejaculation.