中文摘要：

2012年7月到2013年4月，对云南白马雪山国家级自然保护区一个人工辅助投食的滇金丝猴群进行观察，采用全事件取样法对该群全部0—3岁30只个体（雄性12只、雌性18只）的社会玩耍行为进行了研究。研究结果表明：不同年龄段的社会玩耍频次存在显著差异，且玩耍频次与年龄段呈明显负相关；0—3岁的滇金丝猴倾向于选择相同年龄段的个体作为玩耍伙伴；0—1岁的个体更喜欢追逐（67．5％）的玩耍行为，1—2岁内的个体主要采取抓打（26．6％）、撕咬（25．3％）、追逐（40．5％）的玩耍行为；2—3岁的个体各种玩耍行为的频次有明显差异。0—3岁的雄性个体比雌性个体的玩耍频次更高。研究结果表明，0—3岁滇金丝猴的社会玩耍行为符合年龄阶段假说、性别差异假说和运动技能训练假说。

英文摘要：

We observed the social play behavior of individual Yunnan snub-nosed monkeys （ Rhinopithecus bieti） of 0 - 3 years of age at Xiangguqing in Baimaxueshan National Nature Reserve from July 2012 to April 2013. Thirty monkeys （ 12 males, 18 females） from a provisioned monkey group were observed via all-occurrence sampling. We found that the frequency of social play is significantly different among individuals in their first, second, or third years of life, and that play frequency negatively correlates with age. Choice of play partners and types of play also vary between age groups. Individuals are most likely to play with age-mates. The preferred games for individuals in the first year of life are chasing （67.5%）, while individuals in the second year of life most often catch （26. 6% ）, bite （25.3%）, and chase （40. 5% ） each other. We found no particular preference in the play of monkeys in their third year of life. On average, males spend more time playing than females. We interpret these patterns in the social play of R. bieti in light of the age/ stage hypothesis, sex difference hypothesis, and locomotor development hypothesis.