神农架自然保护区金丝猴投食群性行为的初步观察

Preliminary Observation on Copulation of Sichuan Snub-nosed Monkeys(Rhinopithecus roxellana) in a Provisioned Group in the Shennongjia National Nature Reserve

为探讨神农架川金丝猴投食群的性行为及近亲繁殖回避机制,2008年4～11月,采用行为取样法和全事件记录法对神农架自然保护区人工投食猴群的性行为进行研究。结果发现,邀配行为次数在性别间差异显著,雌性多于雄性。雌性邀配成功率在年龄间差异显著,成功率顺序由高到低为:成年、青年和少年。交配过程中有其它个体的干扰,干扰形式有4种类型,不同干扰类型的成功率差异显著。雌性存在多次邀配行为,此行为可提高邀配的成功率。性行为的成功率相对较低,表明川金丝猴的交配目的不仅限于繁殖。

The study described the copulation and avoiding inbreeding of a provisioned group of Sichuan snub-nosed monkeys （Rhinopithecus roxellana）. Using behavior sampling and all-occurrence recording method, copulation were recorded for a group of 45 individuals in Shennongjia Nature Reserve from April to November 2008. The re- suits indicated that the initiators of prostrating behavior exhibited significant differences among sex classes, females initiated prostrating behavior more frequently than males. The frequencies of successful copulation among females of initiators were adult,next was young, The last was juvenile. There were four types of interfering behaviors during copulation course, and significant differences among different interfering behaviors. Females exhibited multiple prostrating behavior, this may enlarge successful percentage of prostrating behavior. Low successful copulation rate indicated that the function of copulation was not only reproduction.