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The effects of social rank and payoff structure on the evolution of group hunting
Group hunting is common among social carnivores, and mechanisms that promote this behavior are a central topic in evolutionary biology. Increased prey capture success and decreased losses from competitors are often invoked as factors promoting group hunting. However, many animal societies have linea...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9187110/ https://www.ncbi.nlm.nih.gov/pubmed/35687649 http://dx.doi.org/10.1371/journal.pone.0269522 |
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author | Jarvey, Julie C. Aminpour, Payam Bohm, Clifford |
author_facet | Jarvey, Julie C. Aminpour, Payam Bohm, Clifford |
author_sort | Jarvey, Julie C. |
collection | PubMed |
description | Group hunting is common among social carnivores, and mechanisms that promote this behavior are a central topic in evolutionary biology. Increased prey capture success and decreased losses from competitors are often invoked as factors promoting group hunting. However, many animal societies have linear dominance hierarchies where access to critical resources is determined by social rank, and group-hunting rewards are shared unequally. Despite this inequality, animals in such societies cooperate to hunt and defend resources. Game theoretic models predict that rank and relative rewards from group hunting vs. solitary hunting affect which hunting strategies will evolve. These predictions are partially supported by empirical work, but data needed to test these predictions are difficult to obtain in natural systems. We use digital evolution to test how social rank and tolerance by dominants of subordinates feeding while sharing spoils from group hunting influence which hunting strategies evolve in digital organisms. We created a computer-simulated world to reflect social and hunting dynamics of spotted hyenas (Crocuta crocuta). We found that group hunting increased as tolerance increased and as the relative payoff from group hunting increased. Also, top-ranking agents were more likely to group hunt than lower-ranking agents under despotic sharing conditions. These results provide insights into mechanisms that may promote cooperation in animal societies structured by dominance hierarchies. |
format | Online Article Text |
id | pubmed-9187110 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-91871102022-06-11 The effects of social rank and payoff structure on the evolution of group hunting Jarvey, Julie C. Aminpour, Payam Bohm, Clifford PLoS One Research Article Group hunting is common among social carnivores, and mechanisms that promote this behavior are a central topic in evolutionary biology. Increased prey capture success and decreased losses from competitors are often invoked as factors promoting group hunting. However, many animal societies have linear dominance hierarchies where access to critical resources is determined by social rank, and group-hunting rewards are shared unequally. Despite this inequality, animals in such societies cooperate to hunt and defend resources. Game theoretic models predict that rank and relative rewards from group hunting vs. solitary hunting affect which hunting strategies will evolve. These predictions are partially supported by empirical work, but data needed to test these predictions are difficult to obtain in natural systems. We use digital evolution to test how social rank and tolerance by dominants of subordinates feeding while sharing spoils from group hunting influence which hunting strategies evolve in digital organisms. We created a computer-simulated world to reflect social and hunting dynamics of spotted hyenas (Crocuta crocuta). We found that group hunting increased as tolerance increased and as the relative payoff from group hunting increased. Also, top-ranking agents were more likely to group hunt than lower-ranking agents under despotic sharing conditions. These results provide insights into mechanisms that may promote cooperation in animal societies structured by dominance hierarchies. Public Library of Science 2022-06-10 /pmc/articles/PMC9187110/ /pubmed/35687649 http://dx.doi.org/10.1371/journal.pone.0269522 Text en © 2022 Jarvey et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Jarvey, Julie C. Aminpour, Payam Bohm, Clifford The effects of social rank and payoff structure on the evolution of group hunting |
title | The effects of social rank and payoff structure on the evolution of group hunting |
title_full | The effects of social rank and payoff structure on the evolution of group hunting |
title_fullStr | The effects of social rank and payoff structure on the evolution of group hunting |
title_full_unstemmed | The effects of social rank and payoff structure on the evolution of group hunting |
title_short | The effects of social rank and payoff structure on the evolution of group hunting |
title_sort | effects of social rank and payoff structure on the evolution of group hunting |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9187110/ https://www.ncbi.nlm.nih.gov/pubmed/35687649 http://dx.doi.org/10.1371/journal.pone.0269522 |
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