Infanticide in chimpanzees: Taphonomic case studies from Gombe.

American Journal of Physical Anthropology
Claire A KirchhoffD Anthony Collins

Abstract

We present a study of skeletal damage to four chimpanzee (Pan troglodytes) infanticide victims from Gombe National Park, Tanzania. Skeletal analysis may provide insight into the adaptive significance of infanticide by examining whether nutritional benefits sufficiently explain infanticidal behavior. The nutritional hypothesis would be supported if bone survivorship rates and skeletal damage patterns are comparable to those of monkey prey. If not, other explanations, such as the resource competition hypothesis, should be considered. Taphonomic assessment of two chimpanzee infants included description of breakage and surface modification, data on MNE, %MNE, and bone survivorship. Two additional infants were assessed qualitatively. The data were compared to published information on monkey prey. We also undertook a review of published infanticide cases. The cases were intercommunity infanticides (one male and three female infants) committed by males. Attackers partially consumed two of the victims. Damage to all four infants included puncture marks and compression fractures to the cranium, crenulated breaks to long bones, and incipient fractures on ribs. Compared to monkey prey, the chimpanzee infants had an abundance of vertebrae ...Continue Reading

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Citations

May 28, 2019·Primates; Journal of Primatology·Adriana E LoweNicholas E Newton-Fisher
Mar 15, 2020·American Journal of Physical Anthropology·Andrea R EllerSabrina B Sholts
Jul 18, 2018·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·James R Anderson
Nov 24, 2019·Scientific Reports·Andrew T OzgaAnne C Stone
Jun 5, 2020·Neuroscience and Biobehavioral Reviews·Lisa A WilliamsZanna Clay
Dec 12, 2020·Ecology and Evolution·Mari NishikawaKatharine M Jack

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