Ecology and multilevel selection explain aggression in spider colonies.
Ecology and multilevel selection explain aggression in spider colonies.
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DOI：
10.1111/ele.12622
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发表时间：
2016-08
期刊：
影响因子：
8.8
通讯作者：
Foster KR
中科院分区：
文献类型：
--
作者：
Biernaskie JM;Foster KR
社会生物学的进展继续受到方法论的抽象辩论以及组内与组间选择的相对重要性的阻碍。我们需要具体的生物学例子，以经验数据为基础进行讨论。最近的研究认为，社会蜘蛛群体中的攻击水平可以用群体水平的适应来解释。在这里，我们使用包含生态细节的模型来检验这一结论，同时与亲属和多级选择框架保持一致。我们发现，尽管攻击水平在一定程度上是由组间选择驱动的，但将普遍的组内竞争纳入其中，与纯粹的组水平适应不一致的数据非常吻合。相反，我们的分析表明，侵略的青睐主要是作为一个自私的战略，以竞争资源，尽管导致较低的群体觅食效率或较高的群体灭绝的风险。我们认为，社会生物学将受益于多元化的方法和生态知情的模型和数据之间的更强的联系。
Progress in sociobiology continues to be hindered by abstract debates over methodology and the relative importance of within‐group vs. between‐group selection. We need concrete biological examples to ground discussions in empirical data. Recent work argued that the levels of aggression in social spider colonies are explained by group‐level adaptation. Here, we examine this conclusion using models that incorporate ecological detail while remaining consistent with kin‐ and multilevel selection frameworks. We show that although levels of aggression are driven, in part, by between‐group selection, incorporating universal within‐group competition provides a striking fit to the data that is inconsistent with pure group‐level adaptation. Instead, our analyses suggest that aggression is favoured primarily as a selfish strategy to compete for resources, despite causing lower group foraging efficiency or higher risk of group extinction. We argue that sociobiology will benefit from a pluralistic approach and stronger links between ecologically informed models and data.