Variance in centrality within rock hyrax social networks predicts adult longevity.

<h4>Background</h4>In communal mammals the levels of social interaction among group members vary considerably. In recent years, biologists have realized that within-group interactions may affect survival of the group members. Several recent studies have demonstrated that the social integ...

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Autores principales:	Adi Barocas, Amiyaal Ilany, Lee Koren, Michael Kam, Eli Geffen
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c07bf277fd3b44848d87658e2bae3d8b
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spelling	oai:doaj.org-article:c07bf277fd3b44848d87658e2bae3d8b2021-11-18T06:49:19ZVariance in centrality within rock hyrax social networks predicts adult longevity.1932-620310.1371/journal.pone.0022375https://doaj.org/article/c07bf277fd3b44848d87658e2bae3d8b2011-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21818314/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>In communal mammals the levels of social interaction among group members vary considerably. In recent years, biologists have realized that within-group interactions may affect survival of the group members. Several recent studies have demonstrated that the social integration of adult females is positively associated with infant survival, and female longevity is affected by the strength and stability of the individual social bonds. Our aim was to determine the social factors that influence adult longevity in social mammals.<h4>Methodology/principal findings</h4>As a model system, we studied the social rock hyrax (Procavia capensis), a plural breeder with low reproductive skew, whose groups are mainly composed of females. We applied network theory using 11 years of behavioral data to quantify the centrality of individuals within groups, and found adult longevity to be inversely correlated to the variance in centrality. In other words, animals in groups with more equal associations lived longer. Individual centrality was not correlated with longevity, implying that social tension may affect all group members and not only the weakest or less connected ones.<h4>Conclusions/significance</h4>Our novel findings support previous studies emphasizing the adaptive value of social associations and the consequences of inequality among adults within social groups. However, contrary to previous studies, we suggest that it is not the number or strength of associations that an adult individual has (i.e. centrality) that is important, but the overall configuration of social relationships within the group (i.e. centrality SD) that is a key factor in influencing longevity.Adi BarocasAmiyaal IlanyLee KorenMichael KamEli GeffenPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 7, p e22375 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Adi Barocas Amiyaal Ilany Lee Koren Michael Kam Eli Geffen Variance in centrality within rock hyrax social networks predicts adult longevity.
description	<h4>Background</h4>In communal mammals the levels of social interaction among group members vary considerably. In recent years, biologists have realized that within-group interactions may affect survival of the group members. Several recent studies have demonstrated that the social integration of adult females is positively associated with infant survival, and female longevity is affected by the strength and stability of the individual social bonds. Our aim was to determine the social factors that influence adult longevity in social mammals.<h4>Methodology/principal findings</h4>As a model system, we studied the social rock hyrax (Procavia capensis), a plural breeder with low reproductive skew, whose groups are mainly composed of females. We applied network theory using 11 years of behavioral data to quantify the centrality of individuals within groups, and found adult longevity to be inversely correlated to the variance in centrality. In other words, animals in groups with more equal associations lived longer. Individual centrality was not correlated with longevity, implying that social tension may affect all group members and not only the weakest or less connected ones.<h4>Conclusions/significance</h4>Our novel findings support previous studies emphasizing the adaptive value of social associations and the consequences of inequality among adults within social groups. However, contrary to previous studies, we suggest that it is not the number or strength of associations that an adult individual has (i.e. centrality) that is important, but the overall configuration of social relationships within the group (i.e. centrality SD) that is a key factor in influencing longevity.
format	article
author	Adi Barocas Amiyaal Ilany Lee Koren Michael Kam Eli Geffen
author_facet	Adi Barocas Amiyaal Ilany Lee Koren Michael Kam Eli Geffen
author_sort	Adi Barocas
title	Variance in centrality within rock hyrax social networks predicts adult longevity.
title_short	Variance in centrality within rock hyrax social networks predicts adult longevity.
title_full	Variance in centrality within rock hyrax social networks predicts adult longevity.
title_fullStr	Variance in centrality within rock hyrax social networks predicts adult longevity.
title_full_unstemmed	Variance in centrality within rock hyrax social networks predicts adult longevity.
title_sort	variance in centrality within rock hyrax social networks predicts adult longevity.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/c07bf277fd3b44848d87658e2bae3d8b
work_keys_str_mv	AT adibarocas varianceincentralitywithinrockhyraxsocialnetworkspredictsadultlongevity AT amiyaalilany varianceincentralitywithinrockhyraxsocialnetworkspredictsadultlongevity AT leekoren varianceincentralitywithinrockhyraxsocialnetworkspredictsadultlongevity AT michaelkam varianceincentralitywithinrockhyraxsocialnetworkspredictsadultlongevity AT eligeffen varianceincentralitywithinrockhyraxsocialnetworkspredictsadultlongevity
_version_	1718424377268109312

Variance in centrality within rock hyrax social networks predicts adult longevity.

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