Rapid changes in genetic architecture of behavioural syndromes following colonization of a novel environment.

摘要: Behavioural syndromes, that is correlated behaviours, may be a result from adaptive correlational selection, but in new environmental setting, the trait correlation might act as an evolutionary constraint. However, knowledge about quantitative genetic basis of behavioural and stability evolvability correlations under different ecological conditions, limited. We investigated behaviours freshwater isopod Asellus aquaticus. In some Swedish lakes, A. aquaticus has recently colonized novel habitat diverged into two ecotypes, presumably due to habitat-specific selection predation. Using common garden approach animal model analyses, we estimated parameters for traits compared architecture between ecotypes. report covariance structure been altered ecotype, demonstrating divergence correlations. Thus, our study confirms behind can change rapidly response selective environments.