Correlational selection does not explain the evolution of a behavioural syndrome
Correlational selection does not explain the evolution of a behavioural syndrome
复制标题
相关选择不能解释行为综合症的演变
DOI：
--
复制
发表时间：
2013
影响因子：
2.1
通讯作者：
Robert Brooks
中科院分区：
文献类型：
--
作者：
Chang S. Han;Robert Brooks
相关的行为或行为综合征似乎很普遍，但很少有研究探讨它们是如何产生和维持的。一种可能性认为，如果某些行为组合比其他组合享有更大的适应性，则相关选择可以产生并维持行为综合征。在这里，我们测试这一相关性选择假说的比较行为综合征的结构与多变量健身表面的基础上繁殖成功的男性水虻。我们测量了行为综合征的结构，包括分散能力，探索行为，潜伏期重新安装和性别识别的敏感性在男性。然后，我们测量了这些行为和交配成功之间的关系，在一系列的性别比例的环境。尽管存在一些显着的相关选择，行为综合征的结构与相关选择的行为。虽然我们不能最终拒绝相关选择假说，我们的证据表明，相关选择和由此产生的连锁不平衡可能不负责保持行为之间的强相关性。相反，我们提出了这种行为综合征可能出现的替代方法，并概述了对这些建议进行生理和定量遗传测试的必要性。
Correlated suites of behaviours, or behavioural syndromes, appear to be widespread, and yet few studies have explored how they arise and are maintained. One possibility holds that correlational selection can generate and maintain behavioural syndrome if certain behavioural combinations enjoy greater fitness than other combinations. Here we test this correlational selection hypothesis by comparing behavioural syndrome structure with a multivariate fitness surface based on reproductive success of male water striders. We measured the structure of a behavioural syndrome including dispersal ability, exploration behaviour, latency to remount and sex recognition sensitivity in males. We then measured the relationship between these behaviours and mating success in a range of sex ratio environments. Despite the presence of some significant correlational selection, behavioural syndrome structure was not associated with correlational selection on behaviours. Although we cannot conclusively reject the correlational selection hypothesis, our evidence suggests that correlational selection and resulting linkage disequilibrium might not be responsible for maintaining the strong correlations between behaviours. Instead, we suggest alternative ways in which this behavioural syndrome may have arisen and outline the need for physiological and quantitative genetic tests of these suggestions.