Thermotolerance adaptation to human‐modified habitats occurs in the native range of the invasive ant Wasmannia auropunctata before long‐distance dispersal

Evolutionary Applications

Julien Foucaud¹  Olivier Rey¹  Stéphanie Robert⁵  Laurent Crespin⁷  Jérôme Orivel⁴  Benoit Facon¹  Anne Loiseau¹  Hervé Jourdan³  Martin Kenne²  Paul Serge Mbenoun Masse⁶  Maurice Tindo²  Merav Vonshak⁸ 

[1] INRA, UMR1062 CBGP, Montpellier, France;Département de biologie des organismes animaux, faculté des sciences de l'université de Douala, Douala, Cameroun;IMBE, Aix-Marseille University, Centre IRD de Nouméa,, Nouméa, New Caledonia;CNRS, UMR Ecologie des Forêts de Guyane, Campus Agronomique, Kourou cedex, France;CIRAD, UMR BGPI, Campus International de Baillarguet, Montpellier, France;Laboratoire de Zoologie, Faculté des Sciences, Université de Yaoundé,, Yaoundé, Cameroun;INRA, UR346 d'Epidémiologie Animale, Université de Lyon, Lyon, France;Department of Biology, Stanford University, Stanford, CA, USA

关键词: adaptation;    heat shock;    invasive species;    natural selection and contemporary evolution;    thermotolerance;   

DOI  :  10.1111/eva.12058

来源: Wiley

【 摘 要 】

Abstract

Key evolutionary events associated with invasion success are traditionally thought to occur in the introduced, rather than the native range of species. In the invasive ant Wasmannia auropunctata, however, a shift in reproductive system has been demonstrated within the native range, from the sexual non-dominant populations of natural habitats to the clonal dominant populations of human-modified habitats. Because abiotic conditions of human- modified habitats are hotter and dryer, we performed lab experiments on workers from a set of native and introduced populations, to investigate whether these ecological and genetic transitions were accompanied by a change in thermotolerance and whether such changes occurred before establishment in the introduced range. Thermotolerance levels were higher in native populations from human-modified habitats than in native populations from natural habitats, but were similar in native and introduced populations from human-modified habitats. Differences in thermotolerance could not be accounted for by differences in body size. A scenario based on local adaptation in the native range before introduction in remote areas represents the most parsimonious hypothesis to account for the observed phenotypic pattern. These findings highlight the importance of human land use in explaining major contemporary evolutionary changes.

【 授权许可】

CC BY   
© 2013 The Authors. Evolutionary Applications published by Blackwell Publishing Ltd.

Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.