ArticleInternational journal of primatology2021
Lethal Coalitionary Aggression Associated with a Community Fission in Chimpanzees (
Article in International journal of primatology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.
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Who cites it
41 citing papers in PubMed, 51 citations in OpenAlex.
- The First Evidence of Intermittent Rectal Prolapse in a Wild Chimpanzee (Pan troglodytes).Journal of medical primatology · 2026Article
- First evidence of underground extractive tool use by chimpanzees in Kibale National Park, Uganda.Scientific reports · 2026Article
- A lethal incident during an intergroup encounter in bonobos.Scientific reports · 2026Article
- Chimpanzees are not more aggressive than bonobos but target sexes differently.Science advances · 2026Article
- Close encounters of the friendly kind: pacific between-group interactions in primates.Biological reviews of the Cambridge Philosophical Society · 2025Review
- Atypical tool and object use in wild immature chimpanzees reveals developmental pathways to innovation.Scientific reports · 2025Article
- Ethanol ingestion via frugivory in wild chimpanzees.Science advances · 2025Article
- Insect applications to open wounds by chimpanzees in the wild: first insights from East African chimpanzees.Scientific reports · 2025Article
- Decreases in chimpanzee respiratory disease signs and enteric viral quantity following implementation of anthroponotic disease prevention protocols at a long-term research site.Biological conservation · 2025Article
- Avoidance of reproductive conflict and the evolution of menopause in chimpanzees.Royal Society open science · 2025Article
- Developmental and Sex-Based Variation in Nest Building Among Wild Immature Chimpanzees.American journal of primatology · 2025Article
- Article
- Investigating infant feeding development in wild chimpanzees using stable isotopes of naturally shed hair.American journal of primatology · 2025Article
- Removing snares is an effective conservation intervention: a case study involving chimpanzees.Primates; journal of primatology · 2024Article
- Water scooping: tool use by a wild bonobo (Pan paniscus) at LuiKotale, a case report.Primates; journal of primatology · 2024Article
- Differences in expression of male aggression between wild bonobos and chimpanzees.Current biology : CB · 2024Article
- Lethal combats in the forest among wild western gorillas.iScience · 2024Article
- Female chimpanzees avoid inbreeding even in the presence of substantial bisexual philopatry.Royal Society open science · 2024Article
- Primate population dynamics in Ngogo, Kibale National Park, Uganda, over nearly five decades.Primates; journal of primatology · 2023Article
- Shared community effects and the non-genetic maternal environment shape cortisol levels in wild chimpanzees.Communications biology · 2023Article
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
Abstract
Many animals engage in aggression, but chimpanzees stand out in terms of fatal attacks against adults of their own species. Most lethal aggression occurs between groups, where coalitions of male chimpanzees occasionally kill members of neighboring communities that are strangers. However, the first observed cases of lethal violence in chimpanzees, which occurred at Gombe, Tanzania in the 1970s, involved chimpanzees that once knew each other. They followed the only observed case of a permanent community fission in chimpanzees. A second permanent fission recently transpired at Ngogo, Kibale National Park, Uganda. Members of a large western subgroup gradually ceased associating peacefully with the rest of the community and started behaving antagonistically toward them. Affiliation effectively ended by 2017. Here, we describe two subsequent lethal coalitionary attacks by chimpanzees of the new western community on males of the now separate central community, one in 2018 and the second in 2019. The first victim was a young adult male that never had strong social ties with his attackers. The second was a high-ranking male that had often associated with the western subgroup before 2017; he groomed regularly with males there and formed coalitions with several. Other central males present at the start of the second attack fled, and others nearby did not come to the scene. Several western females joined in the second attack; we suggest that female-female competition contributed to the fission. This event highlighted the limits on protection afforded by long-term familiarity and the constraints on costly cooperation among male chimpanzees.
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