Evolution of quantitative traits in the wild: mind the ecology.

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
Josephine M Pemberton

Abstract

Recent advances in the quantitative genetics of traits in wild animal populations have created new interest in whether natural selection, and genetic response to it, can be detected within long-term ecological studies. However, such studies have re-emphasized the fact that ecological heterogeneity can confound our ability to infer selection on genetic variation and detect a population's response to selection by conventional quantitative genetics approaches. Here, I highlight three manifestations of this issue: counter gradient variation, environmentally induced covariance between traits and the correlated effects of a fluctuating environment. These effects are symptomatic of the oversimplifications and strong assumptions of the breeder's equation when it is applied to natural populations. In addition, methods to assay genetic change in quantitative traits have overestimated the precision with which change can be measured. In the future, a more conservative approach to inferring quantitative genetic response to selection, or genomic approaches allowing the estimation of selection intensity and responses to selection at known quantitative trait loci, will provide a more precise view of evolution in ecological time.

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Citations

Jul 21, 2010·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Michael Bonsall, Brian Charlesworth
Dec 5, 2012·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Richard Gomulkiewicz, Ruth G Shaw
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Feb 8, 2018·Molecular Ecology·Michael B MorrisseyEmmanuel Milot
Sep 28, 2018·Evolution; International Journal of Organic Evolution·Marlène GamelonBernt-Erik Saether
Aug 23, 2019·Evolution; International Journal of Organic Evolution·Mason W KulbabaRuth G Shaw
Mar 19, 2020·Proceedings. Biological Sciences·Tiago de Zoeten, Francisco Pulido
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Jun 7, 2019·Evolution Letters·Charles Perrier, Anne Charmantier
Jan 26, 2021·PLoS Biology·Arbel Harpak, Molly Przeworski
Dec 10, 2020·Evolutionary Applications·Hermine AlexandreAntoine Kremer
Oct 16, 2020·Journal of Human Evolution·Anna M Hardin

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