The Social System of Lariang Tarsiers (Tarsius lariang) as Revealed by Genetic Analyses
The Social System of Lariang Tarsiers (Tarsius lariang) as Revealed by Genetic Analyses
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DOI：
10.1007/s10764-009-9341-6
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发表时间：
2009-04-01
影响因子：
2.5
通讯作者：
Merker, Stefan
中科院分区：
文献类型：
--
作者：
Driller, Christine;Perwitasari-Farajallah, Dyah;Merker, Stefan
以前对眼镜猴的社会生物学研究总是基于实地观察。苏拉威西眼镜猴以一夫一妻制或兼性一夫多妻制的社会交配系统而闻名，但迄今为止，还没有数据来描述遗传交配系统。我们在这里汇集了行为研究和分子工具，首次阐明交配行为和亲缘关系的眼镜猴人口。我们调查了最近描述的Tarsius lariang的社会系统，研究人员以前从未研究过。2005年9月至11月，我们在印度尼西亚苏拉威西岛中部进行了实地观察和采样，该物种是当地特有的。重点人群的11个社会群体中有10个由1名成年男性、1名成年女性和假定的后代组成。为了揭示遗传关系，我们使用了12个微卫星位点和线粒体DNA序列的26个捕获和采样的Lariang眼镜猴的亲子关系和相关性分析。大量的年轻人的后代抽样组成人，这表明一个主要是一夫一妻制的社会和遗传交配系统。有证据表明，在成年人表现出密切关系的群体中，存在着额外配对的年轻人，这导致了这样一种假设，即额外配对的交配是为了避免近亲繁殖。11个社会群体中有10个生活在一夫一妻制的社会制度中，表明一夫一妻制是Tarsius lariang的规则。
Previous sociobiological studies of tarsiers were invariably based on field observations. Sulawesi tarsiers are known for monogamous or facultative polygynous social mating systems, but, to date, no data exist to describe the genetic mating system. We here bring together behavioral studies and molecular tools for the first time to elucidate mating behavior and kinship within a tarsier population. We investigated the social system of the recently described Tarsius lariang, which researchers have never studied before. Between September and November 2005, we conducted field observations and sampling in central Sulawesi, Indonesia, where this species is endemic. Ten of 11 social groups of the focal population were composed of 1 adult male, 1 adult female, and putative offspring. To enlighten genetic relationships, we used 12 microsatellite loci and mitochondrial DNA sequences of 26 captured and sampled Lariang tarsiers for parentage and relatedness analyses. A significant number of young were the offspring of the sampled group adults, suggesting a predominantly monogamous social and genetic mating system. There is evidence for extrapair young in groups in which adult pairs exhibit close relationships, leading to the assumption that extrapair mating is solicited to avoid inbreeding. Ten of 11 social groups lived in monogamous social systems, indicating monogamy to be the rule in Tarsius lariang.