Rowell T E, Dixson A F
J Reprod Fertil. 1975 Jun;43(3):419-34. doi: 10.1530/jrf.0.0430419.
Two adjacent troops of talapoin monkeys were studied near Mbalmayo, Cameroon, during a predicted 3-month breeding season. Mating continued for just over 2 months. One troop began to mate at least 2 weeks before the other, suggesting that, though climatic changes were probably important, precise timing was mediated through some intra-troop social facilitation effect. Before the breeding season, adult males and females lived in separate sub-groups. Males began to move into female sub-groups before there was any sign of the perineal swellings characteristic of receptive talapoin females. Copulation occurred only with females with medium or large swellings, except towards the end of the season. It is probable that the majority of females were monoestrous. At the height of the mating period, females joined mainly male sub-groups, leaving their infants with the mainly female groups which also included a few males. Copulations were observed in both these types of sub-groups. Consort behaviour was not observed, males frequently returning to all-male sub-groups immediately after ejaculation. Intersexual grooming was not characteristic of sexual interactions. At the end of the season, adults were seen more frequently in groups of their own sex or with juveniles only, and there was some indication that increased aggressiveness by newly pregnant females might be partly responsible for this separation.
在喀麦隆姆巴尔马约附近，对两群相邻的长尾猴进行了研究，研究时间为预计为期3个月的繁殖季节。交配持续了两个多月。一群猴比另一群猴至少提前两周开始交配，这表明，尽管气候变化可能很重要，但精确的时间安排是通过某种群体内的社会促进效应来调节的。在繁殖季节之前，成年雄性和雌性生活在不同的亚群体中。在接受交配的长尾猴雌性出现会阴肿胀迹象之前，雄性就开始进入雌性亚群体。除了繁殖季节末期，交配只发生在会阴肿胀中等或较大的雌性身上。很可能大多数雌性是单发情的。在交配高峰期，雌性主要加入雄性亚群体，把幼崽留在主要由雌性组成的群体中，这些群体中也有一些雄性。在这两种亚群体中都观察到了交配行为。未观察到配偶行为，雄性在射精后经常立即返回全雄性亚群体。两性间的梳理行为不是性互动的特征。在繁殖季节结束时，成年猴更频繁地出现在同性群体或仅与幼猴在一起的群体中，并且有迹象表明，新怀孕的雌性攻击性增强可能是造成这种分离的部分原因。
