Intergroup conflicts among chimpanzees in Tai National Park: Lethal violence and the female perspective

Christophe Boesch, Catherine Crockford, Ilka Herbinger, Roman Martin Wittig, Yasmin Moebius, Emmanuelle Normand

Research output: Contribution to journalArticlepeer-review

127 Citations (Scopus)

Abstract

Intercommunity aggression in chimpanzees and primitive warfare in humans possess striking similarities, such as the common occurrence of large male coalitions, systematic control of territory boundaries, and lethal attacks on isolated individuals from neighboring groups. However, an important apparent contrast is the absence of recurrent peaceful interactions between neighboring groups of chimpanzees. We observed a remarkable range of behavior in intergroup encounters among three habituated communities of chimpanzees in Tai National Park, Cote d'voire. Lethal attacks are documented in these study groups for the first time, as well as year-long exchanges of parous adult females and peaceful intergroup visits of mothers with infants. Demographic factors, including group size and number of adult males, are shown to affect the nature of intergroup interactions in ways not considered previously. A reconsideration of the difference in intergroup interactions between eastern and western chimpanzees is proposed including a more important consideration of the female's perspective. The inclusion of the new complexities in intergroup interactions in chimpanzees allows new parallels to be drawn with the evolution of primitive warfare in humans.

Original languageEnglish
Pages (from-to)519-532
Number of pages14
JournalAmerican Journal of Primatology
Volume70
Issue number6
DOIs
Publication statusPublished - Jun 2008

Keywords

  • chimpanzees
  • intergroup conflicts
  • lethal violence
  • female strategies
  • PAN-TROGLODYTES-VERUS
  • WILD CHIMPANZEES
  • COTE-DIVOIRE
  • FOREST
  • PATERNITY
  • UGANDA
  • AGGRESSION
  • EVOLUTION
  • TANZANIA
  • MONKEYS

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