在社会性的哺乳动物中，亲缘关系是影响群体内个体间相互关系的重要因素。在重层社会的灵长类动物中，亲缘关系可能影响不同层级的群体内个体之间友好行为模式。在秦岭川金丝猴社群中，家庭单元内成年雌性个体间社会活动频繁，并已经证实这些成年雌性间有亲属个体存在，也有非亲属个体存在，本课题拟采用野外行为学观察和分子生物学实验相结合的方法对一个野生状态下的秦岭川金丝猴繁殖群进行成年雌性个体间的亲缘关系分析并探究其对个体间友好行为的影响，从而验证“雌性秦岭川金丝猴友好行为是否存在亲属偏向”并探讨其生物学意义。这将为今后更加深入研究灵长类社会系统及其稳定机制提供依据，并为保护秦岭川金丝猴这一珍稀濒危物种提供科学的指导。

In social mammals, kinship is an important factor that often affects the interactions among individuals within groups. In primates that live in multilevel societies, kinship may affect affiliative patterns between individuals at different scales within the larger group. In golden snub-nosed monkey, adult females in a one-male unit (OMU) have frequent social activities，it has been confirmed that females are either relatives or nonrelatives. In this study we will use field observations and molecular methods to reveal (i) how kinship affects affiliative behaviors between adult females in a breeding band of wild golden snub-nosed monkeys, and (ii) its biological significance. These will enable to further understand the social systems and stability mechanism of primates and contribute in conservation of this endanger species.