Low cross-sex genetic correlation in carotenoid-based plumage traits in the blue tit nestlings (Cyanistes caeruleus).

In some bird species, both adult and juvenile individuals are often brightly coloured. It has been commonly assumed that identical plumage colouration present in both sexes results from strong intersexual genetic correlations in colour-related traits. Here, we aimed at testing this hypothesis in juv...

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Autores principales:	Szymon M Drobniak, Dariusz Wiejaczka, Aneta Arct, Anna Dubiec, Lars Gustafsson, Mariusz Cichoń
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/421c9049bcf84313855e2095d40759b3
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id	oai:doaj.org-article:421c9049bcf84313855e2095d40759b3
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spelling	oai:doaj.org-article:421c9049bcf84313855e2095d40759b32021-11-18T09:02:54ZLow cross-sex genetic correlation in carotenoid-based plumage traits in the blue tit nestlings (Cyanistes caeruleus).1932-620310.1371/journal.pone.0069786https://doaj.org/article/421c9049bcf84313855e2095d40759b32013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23936101/?tool=EBIhttps://doaj.org/toc/1932-6203In some bird species, both adult and juvenile individuals are often brightly coloured. It has been commonly assumed that identical plumage colouration present in both sexes results from strong intersexual genetic correlations in colour-related traits. Here, we aimed at testing this hypothesis in juvenile individuals and looked at genetic parameters describing carotenoid-based colouration of blue tit nestlings in a wild population. To separate genetic and environmental sources of phenotypic variation we performed a cross-fostering experiment. Our analyses confirmed the existence of sexual dichromatism in blue tit nestlings and revealed a significant, although low, genetic component of carotenoid-based colouration. However, genetic effects are expressed differently across sexes as indicated by low cross-sex genetic correlations (rmf). Thus our results do not support the prediction of generally high rmf and suggest that intersexual constraints on the evolution of colouration traits may be weaker than expected. We hypothesise that observed patterns of genetic correlations result from sex-specific selective pressures acting on nestling plumage colouration.Szymon M DrobniakDariusz WiejaczkaAneta ArctAnna DubiecLars GustafssonMariusz CichońPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 7, p e69786 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Szymon M Drobniak Dariusz Wiejaczka Aneta Arct Anna Dubiec Lars Gustafsson Mariusz Cichoń Low cross-sex genetic correlation in carotenoid-based plumage traits in the blue tit nestlings (Cyanistes caeruleus).
description	In some bird species, both adult and juvenile individuals are often brightly coloured. It has been commonly assumed that identical plumage colouration present in both sexes results from strong intersexual genetic correlations in colour-related traits. Here, we aimed at testing this hypothesis in juvenile individuals and looked at genetic parameters describing carotenoid-based colouration of blue tit nestlings in a wild population. To separate genetic and environmental sources of phenotypic variation we performed a cross-fostering experiment. Our analyses confirmed the existence of sexual dichromatism in blue tit nestlings and revealed a significant, although low, genetic component of carotenoid-based colouration. However, genetic effects are expressed differently across sexes as indicated by low cross-sex genetic correlations (rmf). Thus our results do not support the prediction of generally high rmf and suggest that intersexual constraints on the evolution of colouration traits may be weaker than expected. We hypothesise that observed patterns of genetic correlations result from sex-specific selective pressures acting on nestling plumage colouration.
format	article
author	Szymon M Drobniak Dariusz Wiejaczka Aneta Arct Anna Dubiec Lars Gustafsson Mariusz Cichoń
author_facet	Szymon M Drobniak Dariusz Wiejaczka Aneta Arct Anna Dubiec Lars Gustafsson Mariusz Cichoń
author_sort	Szymon M Drobniak
title	Low cross-sex genetic correlation in carotenoid-based plumage traits in the blue tit nestlings (Cyanistes caeruleus).
title_short	Low cross-sex genetic correlation in carotenoid-based plumage traits in the blue tit nestlings (Cyanistes caeruleus).
title_full	Low cross-sex genetic correlation in carotenoid-based plumage traits in the blue tit nestlings (Cyanistes caeruleus).
title_fullStr	Low cross-sex genetic correlation in carotenoid-based plumage traits in the blue tit nestlings (Cyanistes caeruleus).
title_full_unstemmed	Low cross-sex genetic correlation in carotenoid-based plumage traits in the blue tit nestlings (Cyanistes caeruleus).
title_sort	low cross-sex genetic correlation in carotenoid-based plumage traits in the blue tit nestlings (cyanistes caeruleus).
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/421c9049bcf84313855e2095d40759b3
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Low cross-sex genetic correlation in carotenoid-based plumage traits in the blue tit nestlings (Cyanistes caeruleus).

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