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Extra-pair paternity drives plumage colour elaboration in male passerines

The elaborate ornamental plumage displayed by birds has largely been attributed to sexual selection, whereby the greater success of ornamented males in attaining mates drives a rapid elaboration of those ornaments. Indeed, plumage elaboration tends to be greatest in species with a high variance in r...

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Autores principales: Thibault, Emma, Mahoney, Sean M., Briskie, James V., Shaikh, Mateen, Reudink, Matthew W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9394826/
https://www.ncbi.nlm.nih.gov/pubmed/35994495
http://dx.doi.org/10.1371/journal.pone.0273347
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author Thibault, Emma
Mahoney, Sean M.
Briskie, James V.
Shaikh, Mateen
Reudink, Matthew W.
author_facet Thibault, Emma
Mahoney, Sean M.
Briskie, James V.
Shaikh, Mateen
Reudink, Matthew W.
author_sort Thibault, Emma
collection PubMed
description The elaborate ornamental plumage displayed by birds has largely been attributed to sexual selection, whereby the greater success of ornamented males in attaining mates drives a rapid elaboration of those ornaments. Indeed, plumage elaboration tends to be greatest in species with a high variance in reproductive success such as polygynous mating systems. Even among socially monogamous species, many males are extremely colourful. In their now-classic study, Møller and Birkhead (1994) suggested that increased variance in reproductive success afforded by extra-pair paternity should intensify sexual selection pressure and thus an elaboration of male plumage and sexual dichromatism, but the relatively few measures of extra-pair paternity at the time prevented a rigorous test of this hypothesis. In the nearly three decades since that paper’s publication, hundreds of studies have been published on rates of extra-pair paternity and more objective measures of plumage colouration have been developed, allowing for a large-scale comparative test of Møller and Birkhead’s (1994) hypothesis. Using an analysis of 186 socially monogamous passerine species with estimates of extra-pair paternity, our phylogenetically controlled analysis confirms Møller and Birkhead’s (1994) early work, demonstrating that rates of extra-pair paternity are positively associated with male, but not female, colouration and with the extent of sexual dichromatism. Plumage evolution is complex and multifaceted, driven by phylogenetic, ecological, and social factors, but our analysis confirms a key role of extra-pair mate choice in driving the evolution of ornamental traits.
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spelling pubmed-93948262022-08-23 Extra-pair paternity drives plumage colour elaboration in male passerines Thibault, Emma Mahoney, Sean M. Briskie, James V. Shaikh, Mateen Reudink, Matthew W. PLoS One Research Article The elaborate ornamental plumage displayed by birds has largely been attributed to sexual selection, whereby the greater success of ornamented males in attaining mates drives a rapid elaboration of those ornaments. Indeed, plumage elaboration tends to be greatest in species with a high variance in reproductive success such as polygynous mating systems. Even among socially monogamous species, many males are extremely colourful. In their now-classic study, Møller and Birkhead (1994) suggested that increased variance in reproductive success afforded by extra-pair paternity should intensify sexual selection pressure and thus an elaboration of male plumage and sexual dichromatism, but the relatively few measures of extra-pair paternity at the time prevented a rigorous test of this hypothesis. In the nearly three decades since that paper’s publication, hundreds of studies have been published on rates of extra-pair paternity and more objective measures of plumage colouration have been developed, allowing for a large-scale comparative test of Møller and Birkhead’s (1994) hypothesis. Using an analysis of 186 socially monogamous passerine species with estimates of extra-pair paternity, our phylogenetically controlled analysis confirms Møller and Birkhead’s (1994) early work, demonstrating that rates of extra-pair paternity are positively associated with male, but not female, colouration and with the extent of sexual dichromatism. Plumage evolution is complex and multifaceted, driven by phylogenetic, ecological, and social factors, but our analysis confirms a key role of extra-pair mate choice in driving the evolution of ornamental traits. Public Library of Science 2022-08-22 /pmc/articles/PMC9394826/ /pubmed/35994495 http://dx.doi.org/10.1371/journal.pone.0273347 Text en © 2022 Thibault et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Thibault, Emma
Mahoney, Sean M.
Briskie, James V.
Shaikh, Mateen
Reudink, Matthew W.
Extra-pair paternity drives plumage colour elaboration in male passerines
title Extra-pair paternity drives plumage colour elaboration in male passerines
title_full Extra-pair paternity drives plumage colour elaboration in male passerines
title_fullStr Extra-pair paternity drives plumage colour elaboration in male passerines
title_full_unstemmed Extra-pair paternity drives plumage colour elaboration in male passerines
title_short Extra-pair paternity drives plumage colour elaboration in male passerines
title_sort extra-pair paternity drives plumage colour elaboration in male passerines
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9394826/
https://www.ncbi.nlm.nih.gov/pubmed/35994495
http://dx.doi.org/10.1371/journal.pone.0273347
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