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The stasis that wasn’t: Adaptive evolution goes against phenotypic selection in a wild rodent population

View ORCID ProfileTimothée Bonnet, Peter Wandeler, Glauco Camenisch, View ORCID ProfileErik Postma
doi: https://doi.org/10.1101/038604
Timothée Bonnet
1Institute of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
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Peter Wandeler
1Institute of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
2Natural History Museum Fribourg, Fribourg, Switzerland
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Glauco Camenisch
1Institute of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
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Erik Postma
1Institute of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
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Abstract

Despite being heritable and under selection, traits often do not appear to evolve as predicted by evolutionary theory. Indeed, conclusive evidence for contemporary adaptive evolution remains elusive in wild vertebrate populations, and stasis seems to be the norm. Here we show that a wild rodent population has evolved to become lighter, but that both this evolutionary change and the selective pressure that drives it are not apparent on the phenotypic level. Thereby we demonstrate that understanding and predicting the response of wild populations to environmental change requires an explicitly (quantitative) genetic approach, and that natural populations can show a rapid and adaptive, but easily missed, evolutionary response.

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Posted February 02, 2016.
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The stasis that wasn’t: Adaptive evolution goes against phenotypic selection in a wild rodent population
Timothée Bonnet, Peter Wandeler, Glauco Camenisch, Erik Postma
bioRxiv 038604; doi: https://doi.org/10.1101/038604
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The stasis that wasn’t: Adaptive evolution goes against phenotypic selection in a wild rodent population
Timothée Bonnet, Peter Wandeler, Glauco Camenisch, Erik Postma
bioRxiv 038604; doi: https://doi.org/10.1101/038604

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