Family network size and survival across the lifespan of female macaques
Family network size and survival across the lifespan of female macaques
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DOI：
10.1098/rspb.2017.0515
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发表时间：
2017-05-17
影响因子：
4.7
通讯作者：
Platt, M. L.
中科院分区：
文献类型：
--
作者：
Brent, L. J. N.;Ruiz-Lambides, A.;Platt, M. L.
二十年的研究表明，人类和其他群居哺乳动物的社会关系具有共同的进化基础。支持这一观点的关键是越来越多的证据表明死亡率受到社会融合的影响，但这些影响何时出现以及持续多久大多是未知的。在这里，我们在成年雌性猕猴中报告说，成年雌性近亲的数量（社会融合的代表）对生存的影响在整个生命过程中并不是均匀的。与亲属较少的壮年女性相比，亲属较多的壮年女性的生存结果更好，而老年女性则没有发现这种效应。群体规模和优势等级并不影响这一结果。老年女性较少成为攻击目标，这表明在社会环境中驾驭的经验的增强可能会消除老年时对社会关系的需求。只有一项针对人类的研究发现，社会融合与生存之间存在基于年龄的依赖性。我们的研究使用迄今为止所有非人类动物的最大数据集，扩展了对社会性促进生存这一观点的支持，并提出了在生命历程变化中采用的策略以及社会世界的经验。
Two decades of research suggest social relationships have a common evolutionary basis in humans and other gregarious mammals. Critical to the support of this idea is growing evidence that mortality is influenced by social integration, but when these effects emerge and how long they last is mostly unknown. Here, we report in adult female macaques that the impact of number of close adult female relatives, a proxy for social integration, on survival is not experienced uniformly across the life course; prime-aged females with a greater number of relatives had better survival outcomes compared with prime-aged females with fewer relatives, whereas no such effect was found in older females. Group size and dominance rank did not influence this result. Older females were less frequent targets of aggression, suggesting enhanced experience navigating the social landscape may obviate the need for social relationships in old age. Only one study of humans has found age-based dependency in the association between social integration and survival. Using the largest dataset for any non-human animal to date, our study extends support for the idea that sociality promotes survival and suggests strategies employed across the life course change along with experience of the social world.