Paternity and dominance loss in male breeders: the cost of helpers in a cooperatively breeding mammal.

Paternity insurance and dominance tenure length are two important components of male reproductive success, particularly in species where reproduction is highly skewed towards a few individuals. Identifying the factors affecting these two components is crucial to better understand the pattern of vari...

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Autores principales:	Sophie Lardy, Aurélie Cohas, Emmanuel Desouhant, Marion Tafani, Dominique Allainé
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2b3062e008bd415baab82a911a2146b4
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spelling	oai:doaj.org-article:2b3062e008bd415baab82a911a2146b42021-11-18T07:30:14ZPaternity and dominance loss in male breeders: the cost of helpers in a cooperatively breeding mammal.1932-620310.1371/journal.pone.0029508https://doaj.org/article/2b3062e008bd415baab82a911a2146b42012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22272236/?tool=EBIhttps://doaj.org/toc/1932-6203Paternity insurance and dominance tenure length are two important components of male reproductive success, particularly in species where reproduction is highly skewed towards a few individuals. Identifying the factors affecting these two components is crucial to better understand the pattern of variation in reproductive success among males. In social species, the social context (i.e. group size and composition) is likely to influence the ability of males to secure dominance and to monopolize reproduction. Most studies have analyzed the factors affecting paternity insurance and dominance tenure separately. We use a long term data set on Alpine marmots to investigate the effect of the number of subordinate males on both paternity insurance and tenure of dominant males. We show that individuals which are unable to monopolize reproduction in their family groups in the presence of many subordinate males are likely to lose dominance the following year. We also report that dominant males lose body mass in the year they lose both paternity and dominance. Our results suggest that controlling many subordinate males is energetically costly for dominant males, and those unable to support this cost lose the control over both reproduction and dominance. A large number of subordinate males in social groups is therefore costly for dominant males in terms of fitness.Sophie LardyAurélie CohasEmmanuel DesouhantMarion TafaniDominique AllainéPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 1, p e29508 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sophie Lardy Aurélie Cohas Emmanuel Desouhant Marion Tafani Dominique Allainé Paternity and dominance loss in male breeders: the cost of helpers in a cooperatively breeding mammal.
description	Paternity insurance and dominance tenure length are two important components of male reproductive success, particularly in species where reproduction is highly skewed towards a few individuals. Identifying the factors affecting these two components is crucial to better understand the pattern of variation in reproductive success among males. In social species, the social context (i.e. group size and composition) is likely to influence the ability of males to secure dominance and to monopolize reproduction. Most studies have analyzed the factors affecting paternity insurance and dominance tenure separately. We use a long term data set on Alpine marmots to investigate the effect of the number of subordinate males on both paternity insurance and tenure of dominant males. We show that individuals which are unable to monopolize reproduction in their family groups in the presence of many subordinate males are likely to lose dominance the following year. We also report that dominant males lose body mass in the year they lose both paternity and dominance. Our results suggest that controlling many subordinate males is energetically costly for dominant males, and those unable to support this cost lose the control over both reproduction and dominance. A large number of subordinate males in social groups is therefore costly for dominant males in terms of fitness.
format	article
author	Sophie Lardy Aurélie Cohas Emmanuel Desouhant Marion Tafani Dominique Allainé
author_facet	Sophie Lardy Aurélie Cohas Emmanuel Desouhant Marion Tafani Dominique Allainé
author_sort	Sophie Lardy
title	Paternity and dominance loss in male breeders: the cost of helpers in a cooperatively breeding mammal.
title_short	Paternity and dominance loss in male breeders: the cost of helpers in a cooperatively breeding mammal.
title_full	Paternity and dominance loss in male breeders: the cost of helpers in a cooperatively breeding mammal.
title_fullStr	Paternity and dominance loss in male breeders: the cost of helpers in a cooperatively breeding mammal.
title_full_unstemmed	Paternity and dominance loss in male breeders: the cost of helpers in a cooperatively breeding mammal.
title_sort	paternity and dominance loss in male breeders: the cost of helpers in a cooperatively breeding mammal.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/2b3062e008bd415baab82a911a2146b4
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Paternity and dominance loss in male breeders: the cost of helpers in a cooperatively breeding mammal.

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