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The intersexual genetic correlation for lifetime fitness in the wild and its implications for sexual selection
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Animal Ecology.ORCID iD: 0000-0002-1178-4053
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Animal Ecology.
2007 (English)In: PLoS ONE, ISSN 1932-6203, Vol. 2, no 8, e744- p.Article in journal (Refereed) Published
Abstract [en]

Background

The genetic benefits of mate choice are limited by the degree to which male and female fitness are genetically correlated. If the intersexual correlation for fitness is small or negative, choosing a highly fit mate does not necessarily result in high fitness offspring.

Methodology/Principal Finding

Using an animal-model approach on data from a pedigreed population of over 7,000 collared flycatchers (Ficedula albicollis), we estimate the intersexual genetic correlation in Lifetime Reproductive Success (LRS) in a natural population to be negative in sign (−0.85±0.6). Simulations show this estimate to be robust in sign to the effects of extra-pair parentage. The genetic benefits in this population are further limited by a low level of genetic variation for fitness in males.

Conclusions/Significance

The potential for indirect sexual selection is nullified by sexual antagonistic fitness effects in this natural population. Our findings and the scarce evidence from other studies suggest that the intersexual genetic correlation for lifetime fitness may be very low in nature. We argue that this form of conflict can, in general, both constrain and maintain sexual selection, depending on the sex-specific additive genetic variances in lifetime fitness.

Place, publisher, year, edition, pages
2007. Vol. 2, no 8, e744- p.
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-13328DOI: 10.1371/journal.pone.0000744ISI: 000207455200021PubMedID: 17710144OAI: oai:DiVA.org:uu-13328DiVA: diva2:41098
Available from: 2008-01-22 Created: 2008-01-22 Last updated: 2015-11-24Bibliographically approved

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Qvarnström, AnnaGustafsson, Lars

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