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Social bonds between unrelated females increase reproductive success in feral horses

Cameron, Elissa Z ; Setsaas, Trine H ; Linklater, Wayne L

Proceedings of the National Academy of Sciences - PNAS, 2009-08, Vol.106 (33), p.13850-13853 [Periódico revisado por pares]

United States: National Academy of Sciences

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  • Título:
    Social bonds between unrelated females increase reproductive success in feral horses
  • Autor: Cameron, Elissa Z ; Setsaas, Trine H ; Linklater, Wayne L
  • Assuntos: Animal behavior ; Animal reproduction ; Animal social behavior ; Animals ; Behavior, Animal ; Biological Sciences ; Birth Rate ; Cooperative Behavior ; Female ; Female animals ; Foals ; Harassment ; Horses ; Male ; Mating behavior ; Primates ; Reproduction - physiology ; Reproductive success ; Risk ; Sexual Behavior, Animal ; Social behavior ; Social integration ; Studies ; Time Factors
  • É parte de: Proceedings of the National Academy of Sciences - PNAS, 2009-08, Vol.106 (33), p.13850-13853
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    Edited by Robert May, University of Oxford, Oxford, United Kingdom, and approved July 2, 2009
    Author contributions: E.Z.C. designed research; E.Z.C. and W.L.L. performed research; E.Z.C. and T.H.S. analyzed data; and E.Z.C., T.H.S., and W.L.L. wrote the paper.
  • Descrição: In many mammals, females form close social bonds with members of their group, usually between kin. Studies of social bonds and their fitness benefits have not been investigated outside primates, and are confounded by the relatedness between individuals in primate groups. Bonds may arise from kin selection and inclusive fitness rather than through direct benefits of association. However, female equids live in long-term social groups with unrelated members. We present 4 years of behavioral data, which demonstrate that social integration between unrelated females increases both foal birth rates and survival, independent of maternal habitat quality, social group type, dominance status, and age. Also, we show that such social integration reduces harassment by males. Consequently, social integration has strong direct fitness consequences between nonrelatives, suggesting that social bonds can evolve based on these direct benefits alone. Our results support recent studies highlighting the importance of direct benefits in maintaining cooperative behavior, while controlling for the confounding influence of kinship.
  • Editor: United States: National Academy of Sciences
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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