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Assortative mating by fitness and sexually antagonistic genetic variation
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal Ecology.
2011 (English)In: Evolution, ISSN 0014-3820, E-ISSN 1558-5646, Vol. 65, no 7, 2111-2116 p.Article in journal (Refereed) Published
Abstract [en]

Recent documentations of sexually antagonistic genetic variation in fitness have spurred an interest in the mechanisms that may act to maintain such variation in natural populations. Using individual-based simulations, I show that positive assortative mating by fitness increases the amount of sexually antagonistic genetic variance in fitness, primarily by elevating the equilibrium frequency of heterozygotes, over most of the range of sex-specific selection and dominance. Further, although the effects of assortative mating by fitness on the protection conditions of polymorphism in sexually antagonistic loci were relatively minor, it widens the protection conditions under most reasonable scenarios (e. g., under heterozygote superiority when fitness is averaged across the sexes) but can also somewhat narrow the protection conditions under other circumstances. The near-ubiquity of assortative mating in nature suggests that it may contribute to upholding standing sexually antagonistic genetic variation in fitness.

Place, publisher, year, edition, pages
2011. Vol. 65, no 7, 2111-2116 p.
Keyword [en]
Heterozygote excess, homogamy, mate choice, polymorphism, population genetics, sexual conflict, sexual selection
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-156478DOI: 10.1111/j.1558-5646.2011.01270.xISI: 000292447000024OAI: oai:DiVA.org:uu-156478DiVA: diva2:431949
Available from: 2011-07-27 Created: 2011-07-25 Last updated: 2016-04-19Bibliographically approved

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Arnqvist, Göran
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