Rapid changes in genetic architecture of behavioural syndromes following colonization of a novel environment.
Författare
Summary, in English
Behavioural syndromes, that is correlated behaviours, may be a result from adaptive correlational selection, but in a new environmental setting, the trait correlation might act as an evolutionary constraint. However, knowledge about the quantitative genetic basis of behavioural syndromes, and the stability and evolvability of genetic correlations under different ecological conditions, is limited. We investigated the quantitative genetic basis of correlated behaviours in the freshwater isopod Asellus aquaticus. In some Swedish lakes, A. aquaticus has recently colonized a novel habitat and diverged into two ecotypes, presumably due to habitat-specific selection from predation. Using a common garden approach and animal model analyses, we estimated quantitative genetic parameters for behavioural traits and compared the genetic architecture between the ecotypes. We report that the genetic covariance structure of the behavioural traits has been altered in the novel ecotype, demonstrating divergence in behavioural correlations. Thus, our study confirms that genetic correlations behind behaviours can change rapidly in response to novel selective environments.
Avdelning/ar
Publiceringsår
2016
Språk
Engelska
Sidor
144-152
Publikation/Tidskrift/Serie
Journal of evolutionary biology
Volym
29
Issue
1
Dokumenttyp
Artikel i tidskrift
Förlag
John Wiley & Sons Inc.
Ämne
- Evolutionary Biology
Status
Published
Forskningsgrupp
- Biodiversity and Conservation Science
- Evolution and Ecology of Phenotypes in Nature
ISBN/ISSN/Övrigt
- ISSN: 1420-9101