In some populations, chimpanzees engage in lethal aggression within and between social units. We report a fatal attack on an adult male chimpanzee at a new research site in Loango National Park, Gabon. We found a fresh corpse of an adult male chimpanzee only a few hundred meters from the research camp, after noting numerous vocalizations and chimpanzee movements the previous evening. Previous contacts with chimpanzees and fresh tracks in the area around the corpse suggest that 2 communities of chimpanzees range where the attack occurred and that members of the neighboring community killed the chimpanzee. To support the conclusion, we conducted genetic analysis for 13 Y-chromosome loci and 9 microsatellite loci of fecal samples from the dead individual, 5 possible attackers, and 2 members of the other community Though we cannot exclude the possibility of an intracommunity killing, the combined observational and genetic evidence suggest an intercommunity attack. The case study adds to the growing evidence that intercommunity killings are a rare but widespread phenomenon among chimpanzees and not an artifact of human provisioning or habituation.
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Boesch, C. (1991). The effect of leopard predation on grouping patterns in forest chimpanzees. Behaviour, 117:220–242.
Boesch, C., and Boesch-Achermann, H. (2000). The Chimpanzees of the Taï Forest: Behavioural Ecology and Evolution. Oxford University Press, Oxford.
Bradley, B. J., Boesch, C., and Vigilant, L. (2000). Identification and redesign of human microsatellite markers for genotyping wild chimpanzee (Pan troglodytes verus) and gorilla (Gorilla gorilla gorilla) DNA from feces. Conservation Genetics, 1:289–292.
Clark, M. (2002). In Search of Human Nature. Routledge. London.
van der Dennen, J. (1995). The Origin of War. Origin Press, Groningen.
Eriksson, J., Siedel, H., Lukas, D., Kayser, M., Erler, A., Hashimoto, C., Hohmann, G., Boesch, C., and Vigilant, L. (2006). Y-chromosome analysis confirms highly sex-biased dispersal and suggests a low male effective population size in bonobos (Pan paniscus). Molecular Ecology, 15:939–949.
Erler, A., Stoneking, M., and Kayser, M. (2004). Development of Y-chromosomal microsatellite markers for nonhuman primates. Molecular Ecology, 13:2921–2930.
Fawcett, K., & Muhumuza, G. (2000). Death of a wild chimpanzee community member: po ssible outcome of intense sexual competition. American Journal of Primatology, 51:243–247.
Goodall, J. (1986). The Chimpanzees of Gombe: Patterns of Behavior. The Belknap Press of Harvard University Press, Cambridge, MA.
Goodall, J., Bandura, A., Bergmann, E., Busse, C., Matam, H., Mpongo, E., Pierce, A., and Riss, D. (1979). Inter-community interactions in the chimpanzee populations of the Gombe National Park. In: Hamburg, D., and McCown, E. (eds.), The Great Apes Benjamin/Cummings. Menlo Park, CA, pp. 13–53.
Gusmão, L., Gonzalez-Neira, A., Alves, C., Lareu, M., Costa, S., Amorim, A., & Carracedo, A. (2002a). Chimpanzee homologous of human Y specific STRs. A comparative study and a proposal for nomenclature. Forensic Science International, 126:129 –136.
Gusmão, L., Gonzalez-Neira, A., Alves, C., Sanchez-Diz, P., Dauber, E. M., Amorim, A., & Carracedo, A. (2002b). Genetic diversity of Y-specific STRs in chimpanzees (Pan troglodytes). American Journal of Primatology, 57, 21–29.
Hamai, M., Nishida, T., Takasaki, H., & Turner, L. (1992). New records of within-group infanticide and cannibalism in wild chimpanzees. Primates, 33:151–162.
Herbinger, I., Boesch, C., & Rothe, H. (2001). Territory characteristics among three neighbouring chimpanzee communities in the Taï National Park, Ivory Coast. International Journal of Primatology, 32:143–167.
Lukas, D., Reynolds, V., Boesch, C., & Vigilant, L. (2005). To what extent does living in a group mean living with kin? Molecular Ecology, 14:2181–2196.
Manson, J., Wrangham, R. (1991). Intergroup aggression in chimpanzees and humans. Current Anthropology, 32:369–390.
Morin, P. A., Chambers, K. E., Boesch, C., & Vigilant. L. (2001). Quantitative PCR analysis of DNA from noninvasive samples for accurate microsatellite genotyping of wild chimpanzees (Pan troglodytes verus). Molecular Ecology, 10:1835–1844.
Nishida, T. (1996). The death of Ntologi, the unparalleled leader of M group. Pan Africa News 3:4.
Nishida, T., Hiraiwa-Hasegawa, M., Hasegawa, T., & Takahata, Y. (1985). Group extinction and female transfer in wild chimpanzees in the Mahale National Park, Tanzania. Zeitschrift für Tierpsychologie, 67:284–301.
Nsubuga, A. M., Robbins, M. M., Roeder, A., Morin, P., Boesch, C., & Vigilant, L. (2004). Factors affecting the amount of genomic DNA extracted from ape feces and the identification of an improved sample storage method. Molecular Ecology, 13:2089–2094.
Power, M. (1991). The Egalitarians: Human and Chimpanzee. Cambridge University Press, Cambridge.
Reynolds, V. (2005). The Chimpanzees of the Budongo Forest: Ecology, Behaviour and Conservation. Oxford University Press, Oxford.
Reynolds, V., & Reynolds, F. (1965). Chimpanzees of the Budongo Forest. In: DeVore, I. (ed.), Primate Behavior. Holt, Rinehart and Winston, New York, pp. 368–424.
Suzuki, A. (1971). Carnivority and cannibalism observed among forest-living chimpanzees. Journal of the Anthropological Society Nippon, 79:30–48.
Vigilant, L. (1999). An evaluation of techniques for the extraction and amplification of DNA from naturally shed hairs. Biological Chemistry, 380:1329–1331.
Vigilant, L., Hofreiter, M., Siedel, H., and Boesch, C. (2001). Paternity and relatedness in wild chimpanzee communities. Proceedings of the National Academy of Sciences of the United States of America, 98:12890–12895.
Watts, D. (2004). Intracommunity coalitionary killing of an adult male chimpanzee at Ngogo, Kibale National Park, Uganda. International Journal of Primatology, 25:507–521.
Watts, D., and Mitani, J. (2000). Infanticide and cannibalism by male chimpanzees at Ngogo, Kibale National Park, Uganda. Primates, 41:357–365.
Watts, D., Muller, M., Amsler, S., Mbabazi, G. & Mitani, J. (2006). Lethal intergroup aggression by chimpanzees in the Kibale National Park, Uganda. American Journal of Primatology, 68:161–180.
Wilson, M. L., Wallauer, W. R., & Pusey, A. E. (2004). Intergroup violence in chimpanzees: New cases from Gombe National Park, Tanzania. International Journal of Primatology, 25:523–550.
Wilson, M. L., & Wrangham, R. W. (2003). Intergroup relations in chimpanzees. Annual Review of Anthropology, 32:363–392.
Wrangham, R., & Peterson, D. (1996). Demonic Males: Apes and the Origins of Human Violence. Houghton Mifflin, Boston.
We thank the Conseil National des Parcs Nationaux of Gabon for permission to conduct our research in Loango National Park. The project is a collaboration among and financially supported by Société pour la Conservation et le Développement (SCD), Wildlife Conservation Society (WCS), and the Max Planck Society. We thank Rombout Swanborn, Tomo Nishihara, and Edward Tutter for their logistical support and Loïc Mackaga and Aimé Relonga for their invaluable tracking assistance in the forest.
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Boesch, C., Head, J., Tagg, N. et al. Fatal Chimpanzee Attack in Loango National Park, Gabon. Int J Primatol 28, 1025–1034 (2007). https://doi.org/10.1007/s10764-007-9201-1
- fatal attack
- intergroup conflict