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The Intersexual Genetic Correlation for Lifetime Fitness in the Wild and Its Implications for Sexual Selection

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/PRINCI...

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Detalles Bibliográficos
Autores principales: Brommer, Jon E., Kirkpatrick, Mark, Qvarnström, Anna, Gustafsson, Lars
Formato: Texto
Lenguaje:English
Publicado: Public Library of Science 2007
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1939732/
https://www.ncbi.nlm.nih.gov/pubmed/17710144
http://dx.doi.org/10.1371/journal.pone.0000744
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author Brommer, Jon E.
Kirkpatrick, Mark
Qvarnström, Anna
Gustafsson, Lars
author_facet Brommer, Jon E.
Kirkpatrick, Mark
Qvarnström, Anna
Gustafsson, Lars
author_sort Brommer, Jon E.
collection PubMed
description 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.
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spelling pubmed-19397322007-08-15 The Intersexual Genetic Correlation for Lifetime Fitness in the Wild and Its Implications for Sexual Selection Brommer, Jon E. Kirkpatrick, Mark Qvarnström, Anna Gustafsson, Lars PLoS One Research Article 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. Public Library of Science 2007-08-15 /pmc/articles/PMC1939732/ /pubmed/17710144 http://dx.doi.org/10.1371/journal.pone.0000744 Text en Brommer et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Brommer, Jon E.
Kirkpatrick, Mark
Qvarnström, Anna
Gustafsson, Lars
The Intersexual Genetic Correlation for Lifetime Fitness in the Wild and Its Implications for Sexual Selection
title The Intersexual Genetic Correlation for Lifetime Fitness in the Wild and Its Implications for Sexual Selection
title_full The Intersexual Genetic Correlation for Lifetime Fitness in the Wild and Its Implications for Sexual Selection
title_fullStr The Intersexual Genetic Correlation for Lifetime Fitness in the Wild and Its Implications for Sexual Selection
title_full_unstemmed The Intersexual Genetic Correlation for Lifetime Fitness in the Wild and Its Implications for Sexual Selection
title_short The Intersexual Genetic Correlation for Lifetime Fitness in the Wild and Its Implications for Sexual Selection
title_sort intersexual genetic correlation for lifetime fitness in the wild and its implications for sexual selection
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1939732/
https://www.ncbi.nlm.nih.gov/pubmed/17710144
http://dx.doi.org/10.1371/journal.pone.0000744
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