Cooperative investment in public goods is kin directed in communal nests of social birds.
Cooperative investment in public goods is kin directed in communal nests of social birds.
复制标题
DOI：
10.1111/ele.12320
复制
发表时间：
2014-09
期刊：
影响因子：
8.8
通讯作者：
Hatchwell BJ
中科院分区：
文献类型：
--
作者：
van Dijk RE;Kaden JC;Argüelles-Ticó A;Dawson DA;Burke T;Hatchwell BJ
公地悲剧预示着，当公共产品被试图以牺牲其他社会群体成员的利益为代价最大化自己的适应性的个人共同利用时，社会就会崩溃。然而，尽管动物社会容易受到自私个体的剥削，但它们已经进化了很多次。亲缘选择为这种社会困境提供了一个解决方案，但在大型社会群体中，亲缘关系往往很低。群居织工（Philetairus socius）生活在一个大的群体中，分享一个巨大的公共巢穴的好处，这需要个人投资来建设和维护。在这里，我们表明，尽管群体内的平均亲缘关系较低，但亲属在空间和社会上是聚集的，而且筑巢的雄性与其他群体成员的本地亲缘关系高于非筑巢的雄性。其他假设几乎没有得到支持，因此我们得出结论，公共产品的好处是与亲属共享的，尽管这些社区规模大，关联度低，但合作投资是由亲属指导的。
The tragedy of the commons predicts social collapse when public goods are jointly exploited by individuals attempting to maximize their fitness at the expense of other social group members. However, animal societies have evolved many times despite this vulnerability to exploitation by selfish individuals. Kin selection offers a solution to this social dilemma, but in large social groups mean relatedness is often low. Sociable weavers (Philetairus socius) live in large colonies that share the benefits of a massive communal nest, which requires individual investment for construction and maintenance. Here, we show that despite low mean kinship within colonies, relatives are spatially and socially clustered and that nest-building males have higher local relatedness to other colony members than do non-building males. Alternative hypotheses received little support, so we conclude that the benefits of the public good are shared with kin and that cooperative investment is, despite the large size and low relatedness of these communities, kin directed.