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

Dunbar, R I M; MacCarron, Padraig; Robertson, Cole.

Afiliación

Dunbar RIM; Department of Experimental Psychology, University of Oxford, South Parks, Oxford OX1 3UD, UK robin.dunbar@psy.ox.ac.uk.
MacCarron P; Department of Computer Science, Aalto University, Espoo FI-00076, Finland.
Robertson C; Department of Experimental Psychology, University of Oxford, South Parks, Oxford OX1 3UD, UK.

Biol Lett ; 14(3)2018 03.

Article en En | MEDLINE | ID: mdl-29514992

RESUMEN

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.

Asunto(s)

Fertilidad; Longevidad; Papio/fisiología; Conducta Social; Animales; Análisis por Conglomerados; Femenino; Cadena Alimentaria

Palabras clave

evolutionarily stable strategy; fertility; fission; predation risk; social organization

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Papio / Conducta Social / Fertilidad / Longevidad Tipo de estudio: Etiology_studies / Risk_factors_studies Aspecto: Determinantes_sociais_saude Límite: Animals Idioma: En Revista: Biol Lett Asunto de la revista: BIOLOGIA Año: 2018 Tipo del documento: Article Pais de publicación: Reino Unido

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