Zhao Dapeng, Ji Weihong, Li Baoguo, Watanabe Kunio
College of Life Sciences, Northwest University, Xi'an, China.
Behav Processes. 2008 Nov;79(3):165-70. doi: 10.1016/j.beproc.2008.07.006. Epub 2008 Jul 25.
Different mating systems in group-living animals have characteristic behavioral correlates that are primarily related to mate competition. Mate competition may push individuals to selectively make dispersal decisions for the purpose of maximizing of opportunities for reproduction. The Sichuan snub-nosed monkey (Rhinopithecus roxellana) is a polygynous primate species endemic to China. We provide the first data on female dispersal in a free-ranging group of R. roxellana in the Zhouzhi National Nature Reserve, Qinling Mountains, China. Both adult and subadult female dispersal occurred. Immigration/emigration rates of adult females are higher than those of subadult females. Mate competition is one apparent driving force behind adult female dispersal, and inbreeding avoidance is the possible proximate factor influencing subadult female dispersal. Adult female R. roxellana employ various reproductive strategies related to dispersal, which may increase their reproductive success.
群居动物中不同的交配系统具有特定的行为关联，这些关联主要与配偶竞争有关。配偶竞争可能促使个体为了最大化繁殖机会而选择性地做出扩散决策。川金丝猴（Rhinopithecus roxellana）是中国特有的一夫多妻制灵长类物种。我们提供了中国秦岭周至国家级自然保护区一群自由放养的川金丝猴中雌性扩散的首批数据。成年和亚成年雌性均出现了扩散现象。成年雌性的迁入/迁出率高于亚成年雌性。配偶竞争是成年雌性扩散背后的一个明显驱动力，而避免近亲繁殖是影响亚成年雌性扩散的可能直接因素。成年川金丝猴雌性采用了与扩散相关的各种繁殖策略，这可能会提高它们的繁殖成功率。
