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

Author:
  • K Karlsson Green
  • F Eroukhmanoff
  • S Harris
  • Lars Pettersson
  • Erik Svensson
Publishing year: 2016
Language: English
Pages: 144-152
Publication/Series: Journal of Evolutionary Biology
Volume: 29
Issue: 1
Document type: Journal article
Publisher: John Wiley & Sons

Abstract 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.

Keywords

  • Evolutionary Biology

Other

Published
  • ISSN: 1420-9101
erik_svensson
E-mail: erik.svensson [at] biol.lu.se

Professor

Evolutionary ecology

+46 46 222 38 19

E-B254

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Centre for Animal Movement Research
Evolutionary Ecology, Department of Biology
Ecology building S-223 62 Lund Sweden