No effect of environmental heterogeneity on the maintenance of genetic variation in wing shape in Drosophila melanogaster

Evolution; International Journal of Organic Evolution
Sam YeamanMichael C Whitlock

Abstract

Theory suggests that heterogeneous environments should maintain more genetic variation within populations than homogeneous environments, yet experimental evidence for this effect in quantitative traits has been inconsistent. To examine the effect of heterogeneity on quantitative genetic variation, we maintained replicate populations of Drosophila melanogaster under treatments with constant temperatures, temporally variable temperature, or spatially variable temperature with either panmictic or limited migration. Despite observing differences in fitness and divergence in several wing traits between the environments, we did not find any differences in the additive genetic variance for any wing traits among any of the treatments. Although we found an effect of gene flow constraining adaptive divergence between cages in the limited migration treatment, it did not tend to increase within-population genetic variance relative to any of the other treatments. The lack of any clear and repeatable patterns of response to heterogeneous versus homogeneous environments across several empirical studies suggests that a single general mechanism for the maintenance of standing genetic variation is unlikely; rather, the relative importance of put...Continue Reading

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Citations

Nov 17, 2012·Nature Reviews. Genetics·Carrie F Olson-ManningThomas Mitchell-Olds
Dec 7, 2013·Evolution; International Journal of Organic Evolution·Katy D Heath, John R Stinchcombe
Oct 25, 2013·Evolution; International Journal of Organic Evolution·Catriona CondonMichael J Angilletta
Dec 17, 2010·Trends in Ecology & Evolution·Michael C Whitlock
Dec 17, 2014·Evolution; International Journal of Organic Evolution·Zachary W CulumberMichael Tobler
Sep 12, 2015·Journal of Plant Research·Yuma TakahashiMasakado Kawata
Jun 8, 2012·Evolution; International Journal of Organic Evolution·Brandon S CooperKristi L Montooth
Jan 25, 2012·Journal of Evolutionary Biology·Michael D GreenfieldY Zhou
Sep 13, 2015·Evolution; International Journal of Organic Evolution·Yuheng HuangAneil F Agrawal
Jun 18, 2015·Evolution; International Journal of Organic Evolution·Ray ToblerChristian Schlötterer
Jul 4, 2015·Ecology and Evolution·Catriona CondonMichael J Angilletta
Jul 24, 2012·Trends in Ecology & Evolution·Tadeusz J KaweckiMichael C Whitlock
Oct 21, 2016·Evolution; International Journal of Organic Evolution·Lesley A AltonMichael J Angilletta
Mar 28, 2017·Evolution; International Journal of Organic Evolution·Josh Van Buskirk
Aug 11, 2020·Biologie aujourd'hui·Jean-Michel Gibert
Nov 24, 2016·Ecology and Evolution·Gregory J AdrianMichael J Angilletta
Aug 23, 2019·Evolution; International Journal of Organic Evolution·Mason W KulbabaRuth G Shaw
Nov 29, 2020·Genome Biology and Evolution·Ari Winbush, Nadia D Singh

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