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Social bonds provide multiple pathways to reproductive success in wild male chimpanzees
In most male mammals, fitness is strongly shaped by competitive access to mates, a non-shareable resource. How, then, did selection favor the evolution of cooperative social bonds? We used behavioral and genetic data on wild chimpanzees (Pan troglodytes schweinfurthii) in Gombe National Park, Tanzan...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8390850/ https://www.ncbi.nlm.nih.gov/pubmed/34471859 http://dx.doi.org/10.1016/j.isci.2021.102864 |
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author | Feldblum, Joseph T. Krupenye, Christopher Bray, Joel Pusey, Anne E. Gilby, Ian C. |
author_facet | Feldblum, Joseph T. Krupenye, Christopher Bray, Joel Pusey, Anne E. Gilby, Ian C. |
author_sort | Feldblum, Joseph T. |
collection | PubMed |
description | In most male mammals, fitness is strongly shaped by competitive access to mates, a non-shareable resource. How, then, did selection favor the evolution of cooperative social bonds? We used behavioral and genetic data on wild chimpanzees (Pan troglodytes schweinfurthii) in Gombe National Park, Tanzania, to study the mechanisms by which male-male social bonds increase reproductive success. Social bonds increased fitness in several ways: first, subordinate males that formed strong bonds with the alpha male had higher siring success. Independently, males with larger networks of strong bonds had higher siring success. In the short term, bonds predicted coalition formation and centrality in the coalition network, suggesting that males benefit from being potential allies to numerous male rivals. In the long term, male ties influenced fitness via improved dominance rank for males that attain alpha status. Together, these results suggest that male bonds evolved in chimpanzees by affording both short- and long-term pathways to reproductive success. |
format | Online Article Text |
id | pubmed-8390850 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-83908502021-08-31 Social bonds provide multiple pathways to reproductive success in wild male chimpanzees Feldblum, Joseph T. Krupenye, Christopher Bray, Joel Pusey, Anne E. Gilby, Ian C. iScience Article In most male mammals, fitness is strongly shaped by competitive access to mates, a non-shareable resource. How, then, did selection favor the evolution of cooperative social bonds? We used behavioral and genetic data on wild chimpanzees (Pan troglodytes schweinfurthii) in Gombe National Park, Tanzania, to study the mechanisms by which male-male social bonds increase reproductive success. Social bonds increased fitness in several ways: first, subordinate males that formed strong bonds with the alpha male had higher siring success. Independently, males with larger networks of strong bonds had higher siring success. In the short term, bonds predicted coalition formation and centrality in the coalition network, suggesting that males benefit from being potential allies to numerous male rivals. In the long term, male ties influenced fitness via improved dominance rank for males that attain alpha status. Together, these results suggest that male bonds evolved in chimpanzees by affording both short- and long-term pathways to reproductive success. Elsevier 2021-08-17 /pmc/articles/PMC8390850/ /pubmed/34471859 http://dx.doi.org/10.1016/j.isci.2021.102864 Text en © 2021 The Authors https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Feldblum, Joseph T. Krupenye, Christopher Bray, Joel Pusey, Anne E. Gilby, Ian C. Social bonds provide multiple pathways to reproductive success in wild male chimpanzees |
title | Social bonds provide multiple pathways to reproductive success in wild male chimpanzees |
title_full | Social bonds provide multiple pathways to reproductive success in wild male chimpanzees |
title_fullStr | Social bonds provide multiple pathways to reproductive success in wild male chimpanzees |
title_full_unstemmed | Social bonds provide multiple pathways to reproductive success in wild male chimpanzees |
title_short | Social bonds provide multiple pathways to reproductive success in wild male chimpanzees |
title_sort | social bonds provide multiple pathways to reproductive success in wild male chimpanzees |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8390850/ https://www.ncbi.nlm.nih.gov/pubmed/34471859 http://dx.doi.org/10.1016/j.isci.2021.102864 |
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