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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >The limited impact of kinship on cooperation in wild chimpanzees
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The limited impact of kinship on cooperation in wild chimpanzees

机译：亲属关系对野生黑猩猩合作的影响有限

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The complex cooperative behavior exhibited by wild chimpanzees generates considerable theoretical and empirical interest, yet we know very little about the mechanisms responsible for its evolution. Here, we investigate the influence of kinship on the cooperative behavior of male chimpanzees living in an unusually large community at Ngogo in Kibale National Park, Uganda. Using long-term field observations and molecular genetic techniques to identify kin relations between individuals, we show that male chimpanzees clearly prefer to affiliate and cooperate with their maternal brothers in several behavioral contexts. Despite these results, additional analyses reveal that the impact of kinship is limited; paternal brothers do not selectively affiliate and cooperate, probably because they cannot be reliably recognized, and the majority of highly affiliative and cooperative dyads are actually unrelated or distantly related. These findings add to a growing body of research that indicates that animals cooperate with each other to obtain both direct and indirect fitness benefits and that complex cooperation can occur between kin and nonkin alike.
机译：野生黑猩猩表现出的复杂的合作行为引起了相当大的理论和经验兴趣，但是我们对导致其进化的机制知之甚少。在这里，我们调查了亲属关系对生活在乌干达基巴莱国家公园Ngogo一个异常大的社区中的雄性黑猩猩合作行为的影响。使用长期的实地观察和分子遗传学技术来识别个体之间的亲属关系，我们表明，雄性黑猩猩显然更愿意在几种行为背景下与他们的母兄弟建立联系并合作。尽管有这些结果，其他分析表明亲属关系的影响是有限的。父辈兄弟没有选择性地隶属和合作，这可能是因为无法可靠地认识他们，并且大多数高度隶属和合作的家族实际上是不相关或遥远的。这些发现增加了越来越多的研究，表明动物彼此合作以获得直接和间接的健身益处，并且亲戚和非亲戚之间都可能发生复杂的合作。

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