Across multiple species of social mammals, a growing number of studies have found that that individual sociality is associated with survival. In long-lived species, like primates, lifespan is one of the main components of fitness. We used 18 years of data from the Lomas Barbudal Monkey project to quantify social integration in 11 capuchin (Cebus capucinus) groups and tested whether female survivorship was associated with females’ tendencies to interact with three types of partners: (1) all group members, (2) adult females, (3) adult males. We found strong evidence that females who engaged more with other females in affiliative interactions and foraged in close proximity experienced increased survivorship. We found some weak evidence that females might also benefit from engaging in more support in agonistic contexts with other females. These benefits were evident in models that account for the females’ rank and group size. Female interactions with all group members also increased survival, but the estimates of the effects were more uncertain. In interactions with adult males, only females who provided more grooming to males survived longer. The results presented here suggest that social integration may result in survival-related benefits. Females might enjoy these benefits through exchanging grooming for other currencies, such as coalitionary support or tolerance.

中文翻译：

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社会融合预测雌性白面卷尾猴的生存

在多种社会哺乳动物中，越来越多的研究发现个体的社会性与生存有关。在像灵长类动物这样的长寿物种中，寿命是健康的主要组成部分之一。我们使用来自 Lomas Barbudal Monkey 项目 18 年的数据来量化 11 种卷尾猴（Cebus capucinus) 组，并测试女性幸存率是否与女性与三种类型的伴侣互动的倾向有关：（1）所有组成员，（2）成年女性，（3）成年男性。我们发现强有力的证据表明，在亲和互动中与其他女性接触更多并在附近觅食的女性生存率增加。我们发现一些微弱的证据表明，在与其他女性竞争的情况下，女性也可能受益于更多的支持。这些好处在考虑女性等级和群体规模的模型中很明显。女性与所有小组成员的互动也增加了生存率，但对效果的估计更加不确定。在与成年男性的互动中，只有为男性提供更多梳理毛发的女性才能存活更长时间。这里提供的结果表明，社会融合可能会带来与生存相关的好处。女性可能会通过用其他货币交换美容来享受这些好处，例如联盟支持或宽容。