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Male tolerance and male–male bonds in a multilevel primate society

Proceedings of the National Academy of Sciences - PNAS, 2014-10, Vol.111 (41), p.14740-14745 [Peer Reviewed Journal]

copyright © 1993–2008 National Academy of Sciences of the United States of America ;Copyright National Academy of Sciences Oct 14, 2014 ;ISSN: 0027-8424 ;EISSN: 1091-6490 ;DOI: 10.1073/pnas.1405811111 ;PMID: 25201960

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  • Title:
    Male tolerance and male–male bonds in a multilevel primate society
  • Author: Patzelt, Annika ; Kopp, Gisela H. ; Ndao, Ibrahima ; Kalbitzer, Urs ; Zinner, Dietmar ; Fischer, Julia
  • Subjects: Animal behavior ; Animal communication ; Animal social behavior ; Animals ; Baboons ; Behavior, Animal ; Behavioral sciences ; Biological Sciences ; Cluster Analysis ; Dyadic relations ; Evolution ; Female animals ; Gangs ; Hierarchy, Social ; Male ; Male animals ; Phylogeny ; Primates ; Primates - physiology ; Social Behavior ; Social interaction ; Social organization
  • Is Part Of: Proceedings of the National Academy of Sciences - PNAS, 2014-10, Vol.111 (41), p.14740-14745
  • Description: Significance Recent theoretical approaches to understanding the evolution of cooperation point to a close link between spatial structure and cooperative tendencies and question the importance of kin relations. We here show that Guinea baboon males living in a multilevel society maintain strong male bonds, irrespective of relatedness, and exhibit low levels of overt aggression. Although our results are compatible with the idea that kin relations may have favored male tolerance and bond formation in the course of evolution, they also support the notion that these relations are not necessary to maintain cooperative relationships in a multilevel society. Guinea baboons thus may constitute a valuable model for understanding the conditions that played a role in the emergence of human social evolution. Male relationships in most species of mammals generally are characterized by intense intrasexual competition, with little bonding among unrelated individuals. In contrast, human societies are characterized by high levels of cooperation and strong bonds among both related and unrelated males. The emergence of cooperative male–male relationships has been linked to the multilevel structure of traditional human societies. Based on an analysis of the patterns of spatial and social interaction in combination with genetic relatedness data of wild Guinea baboons ( Papio papio ), we show that this species exhibits a multilevel social organization in which males maintain strong bonds and are highly tolerant of each other. Several “units” of males with their associated females form “parties,” which team up as “gangs.” Several gangs of the same “community” use the same home range. Males formed strong bonds predominantly within parties; however, these bonds were not correlated with genetic relatedness. Agonistic interactions were relatively rare and were restricted to a few dyads. Although the social organization of Guinea baboons resembles that of hamadryas baboons, we found stronger male–male affiliation and more elaborate greeting rituals among male Guinea baboons and less aggression toward females. Thus, the social relationships of male Guinea baboons differ markedly from those of other members of the genus, adding valuable comparative data to test hypotheses regarding social evolution. We suggest that this species constitutes an intriguing model to study the predictors and fitness benefits of male bonds, thus contributing to a better understanding of the evolution of this important facet of human social behavior.
  • Publisher: United States: National Academy of Sciences
  • Language: English
  • Identifier: ISSN: 0027-8424
    EISSN: 1091-6490
    DOI: 10.1073/pnas.1405811111
    PMID: 25201960
  • Source: GFMER Free Medical Journals
    MEDLINE
    PubMed Central
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