Females paired with new and heavy mates reduce intra-clutch differences in resource allocation.

Reproductive investment affects both offspring and parental fitness and influences the evolution of life histories. Females may vary their overall primary reproductive effort in relation to the phenotypic characteristics of their mate. However, the effects of male quality on differential resource al...

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Autores principales:	Maud Poisbleau, Nina Dehnhard, Laurent Demongin, Charline Parenteau, Petra Quillfeldt, Marcel Eens
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/86a1533176844316be4f7ca2f84aaade
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spelling	oai:doaj.org-article:86a1533176844316be4f7ca2f84aaade2021-11-18T08:59:29ZFemales paired with new and heavy mates reduce intra-clutch differences in resource allocation.1932-620310.1371/journal.pone.0072136https://doaj.org/article/86a1533176844316be4f7ca2f84aaade2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23967280/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Reproductive investment affects both offspring and parental fitness and influences the evolution of life histories. Females may vary their overall primary reproductive effort in relation to the phenotypic characteristics of their mate. However, the effects of male quality on differential resource allocation within clutches have been largely neglected despite the potential implications for mate choice and population dynamics, especially in species exhibiting biparental care and brood reduction. Female southern rockhopper penguins Eudyptes chrysocome paired with heavy mates reduced intra-clutch variation in egg and albumen masses. Females paired with new mates also reduced intra-clutch variation in yolk androgen levels. Since both an increased mass and increased androgen concentrations positively influence chick survival under sibling competition, the chances of fledging the whole clutch are likely to be higher for newly formed pairs with heavy males than for previously formed pairs with light males. Interestingly, total clutch provisioning did not vary with male quality. We show for the first time that females vary intra-clutch variation in resource allocation according to male quality. In species with brood reduction, it may be more adaptive for females to modulate the distribution of resources within the clutch according to breeding conditions, than to change their total clutch provisioning.Maud PoisbleauNina DehnhardLaurent DemonginCharline ParenteauPetra QuillfeldtMarcel EensPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 8, p e72136 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Maud Poisbleau Nina Dehnhard Laurent Demongin Charline Parenteau Petra Quillfeldt Marcel Eens Females paired with new and heavy mates reduce intra-clutch differences in resource allocation.
description	Reproductive investment affects both offspring and parental fitness and influences the evolution of life histories. Females may vary their overall primary reproductive effort in relation to the phenotypic characteristics of their mate. However, the effects of male quality on differential resource allocation within clutches have been largely neglected despite the potential implications for mate choice and population dynamics, especially in species exhibiting biparental care and brood reduction. Female southern rockhopper penguins Eudyptes chrysocome paired with heavy mates reduced intra-clutch variation in egg and albumen masses. Females paired with new mates also reduced intra-clutch variation in yolk androgen levels. Since both an increased mass and increased androgen concentrations positively influence chick survival under sibling competition, the chances of fledging the whole clutch are likely to be higher for newly formed pairs with heavy males than for previously formed pairs with light males. Interestingly, total clutch provisioning did not vary with male quality. We show for the first time that females vary intra-clutch variation in resource allocation according to male quality. In species with brood reduction, it may be more adaptive for females to modulate the distribution of resources within the clutch according to breeding conditions, than to change their total clutch provisioning.
format	article
author	Maud Poisbleau Nina Dehnhard Laurent Demongin Charline Parenteau Petra Quillfeldt Marcel Eens
author_facet	Maud Poisbleau Nina Dehnhard Laurent Demongin Charline Parenteau Petra Quillfeldt Marcel Eens
author_sort	Maud Poisbleau
title	Females paired with new and heavy mates reduce intra-clutch differences in resource allocation.
title_short	Females paired with new and heavy mates reduce intra-clutch differences in resource allocation.
title_full	Females paired with new and heavy mates reduce intra-clutch differences in resource allocation.
title_fullStr	Females paired with new and heavy mates reduce intra-clutch differences in resource allocation.
title_full_unstemmed	Females paired with new and heavy mates reduce intra-clutch differences in resource allocation.
title_sort	females paired with new and heavy mates reduce intra-clutch differences in resource allocation.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/86a1533176844316be4f7ca2f84aaade
work_keys_str_mv	AT maudpoisbleau femalespairedwithnewandheavymatesreduceintraclutchdifferencesinresourceallocation AT ninadehnhard femalespairedwithnewandheavymatesreduceintraclutchdifferencesinresourceallocation AT laurentdemongin femalespairedwithnewandheavymatesreduceintraclutchdifferencesinresourceallocation AT charlineparenteau femalespairedwithnewandheavymatesreduceintraclutchdifferencesinresourceallocation AT petraquillfeldt femalespairedwithnewandheavymatesreduceintraclutchdifferencesinresourceallocation AT marceleens femalespairedwithnewandheavymatesreduceintraclutchdifferencesinresourceallocation
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Females paired with new and heavy mates reduce intra-clutch differences in resource allocation.

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