Trade-off between fertility and predation risk drives a geometric sequence in the pattern of group sizes in baboons

Group-living offers both benefits (protection against predators, access to resources) and costs (increased ecological competition, the impact of group size on fertility). Here, we use cluster analysis to detect natural patternings in a comprehensive sample of baboon groups, and identify a geometric...

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Detalles Bibliográficos
Autores principales: Dunbar, R. I. M., MacCarron, Padraig, Robertson, Cole
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2018
Materias:
Animal Behaviour
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5897608/
https://www.ncbi.nlm.nih.gov/pubmed/29514992
http://dx.doi.org/10.1098/rsbl.2017.0700
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author Dunbar, R. I. M.
MacCarron, Padraig
Robertson, Cole
author_facet Dunbar, R. I. M.
MacCarron, Padraig
Robertson, Cole
author_sort Dunbar, R. I. M.
collection PubMed
description Group-living offers both benefits (protection against predators, access to resources) and costs (increased ecological competition, the impact of group size on fertility). Here, we use cluster analysis to detect natural patternings in a comprehensive sample of baboon groups, and identify a geometric sequence with peaks at approximately 20, 40, 80 and 160. We suggest (i) that these form a set of demographic oscillators that set habitat-specific limits to group size and (ii) that the oscillator arises from a trade-off between female fertility and predation risk.
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spelling pubmed-58976082018-04-23 Trade-off between fertility and predation risk drives a geometric sequence in the pattern of group sizes in baboons Dunbar, R. I. M. MacCarron, Padraig Robertson, Cole Biol Lett Animal Behaviour Group-living offers both benefits (protection against predators, access to resources) and costs (increased ecological competition, the impact of group size on fertility). Here, we use cluster analysis to detect natural patternings in a comprehensive sample of baboon groups, and identify a geometric sequence with peaks at approximately 20, 40, 80 and 160. We suggest (i) that these form a set of demographic oscillators that set habitat-specific limits to group size and (ii) that the oscillator arises from a trade-off between female fertility and predation risk. The Royal Society 2018-03 2018-03-07 /pmc/articles/PMC5897608/ /pubmed/29514992 http://dx.doi.org/10.1098/rsbl.2017.0700 Text en © 2018 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.
spellingShingle Animal Behaviour
Dunbar, R. I. M.
MacCarron, Padraig
Robertson, Cole
Trade-off between fertility and predation risk drives a geometric sequence in the pattern of group sizes in baboons
title Trade-off between fertility and predation risk drives a geometric sequence in the pattern of group sizes in baboons
title_full Trade-off between fertility and predation risk drives a geometric sequence in the pattern of group sizes in baboons
title_fullStr Trade-off between fertility and predation risk drives a geometric sequence in the pattern of group sizes in baboons
title_full_unstemmed Trade-off between fertility and predation risk drives a geometric sequence in the pattern of group sizes in baboons
title_short Trade-off between fertility and predation risk drives a geometric sequence in the pattern of group sizes in baboons
title_sort trade-off between fertility and predation risk drives a geometric sequence in the pattern of group sizes in baboons
topic Animal Behaviour
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5897608/
https://www.ncbi.nlm.nih.gov/pubmed/29514992
http://dx.doi.org/10.1098/rsbl.2017.0700
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