Evidence map›Paper›PMID 28778463›Full record

ArticleJournal of human evolution2017

Predation by female chimpanzees: Toward an understanding of sex differences in meat acquisition in the last common ancestor of Pan and Homo.

Ian C Gilby, Zarin P Machanda, Robert C O'Malley, Carson M Murray, Elizabeth V Lonsdorf, Kara Walker, Deus C Mjungu, Emily Otali, Martin N Muller, Melissa Emery Thompson and 2 more

Open access · greenAbstract read
In one paragraph

Article in Journal of human evolution, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.9field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 50 citations in OpenAlex.

  1. Female Affiliation and Status in Semi-Free-Ranging Chimpanzees.American journal of biological anthropology · 2026
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  10. The evolution of early hominin food production and sharing.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  11. Review
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  14. Prey preferences of the chimpanzee (Ecology and evolution · 2021
    Article
  15. Variation in primate decision-making under uncertainty and the roots of human economic behaviour.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021
    Review
  16. Balancing costs and benefits in primates: ecological and palaeoanthropological views.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021
    Review
  17. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 9 institutions in 3 countries.

Ian C GilbySchool of Human Evolution and Social Change, and Institute of Human Origins, Arizona State University, Tempe, AZ 85287, USA. Electronic address: ian.gilby@asu.edu.
Zarin P MachandaDepartment of Human Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA; Department of Anthropology, Tufts University, Medford, MA 02155, USA. Electronic address: zarin.machanda@tufts.edu.
Robert C O'MalleyCenter for the Advanced Study of Human Paleobiology, The George Washington University, Washington, DC 20052, USA. Electronic address: omalleyrc@gmail.com.
Carson M MurrayCenter for the Advanced Study of Human Paleobiology, The George Washington University, Washington, DC 20052, USA. Electronic address: cmmurray@gwu.edu.
Elizabeth V LonsdorfDepartment of Psychology and Biological Foundations of Behavior Program, Franklin & Marshall College, Lancaster, PA 17603, USA. Electronic address: elonsdor@fandm.edu.
Kara WalkerDepartment of Evolutionary Anthropology, Duke University, Durham, NC 27708, USA. Electronic address: kara.walker@duke.edu.
Deus C MjunguGombe Stream Research Centre, The Jane Goodall Institute, Kigoma, Tanzania. Electronic address: dmjungu@janegoodall.or.tz.
Emily OtaliKibale Chimpanzee Project, Fort Portal, Uganda. Electronic address: eotali@yahoo.co.uk.
Martin N MullerDepartment of Anthropology, University of New Mexico, Albuquerque, NM 87131, USA. Electronic address: muller@unm.edu.
Melissa Emery ThompsonDepartment of Anthropology, University of New Mexico, Albuquerque, NM 87131, USA. Electronic address: memery@unm.edu.
Anne E PuseyDepartment of Evolutionary Anthropology, Duke University, Durham, NC 27708, USA. Electronic address: anne.pusey@duke.edu.
Richard W WranghamDepartment of Human Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA. Electronic address: wrangham@fas.harvard.edu.
Duke University · USGeorge Washington University · USUniversity of New Mexico · USArizona State University · USFranklin & Marshall College · USHarvard University · USKibale Chimpanzee Project · UGThe Jane Goodall Institute · TZTufts University · US

Funding

Molecular Epidemiology and Natural History of SIVcpzR01AI058715 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI HAHN, BEATRICE H · 2004 to 2013
$6.1M
Cumulative Life Course Effects on Aging and Health in a Long-Lived Primate ModelR37AG049395 · NIA · UNIVERSITY OF NEW MEXICO · PI Elizabeth Vinson Lonsdorf, Melissa Emery Thompson · 2022 to 2026
$3.2M
Biodemography of Aging in Wild ChimpanzeesR01AG049395 · NIA · UNIVERSITY OF NEW MEXICO · PI MITANI, JOHN CARY, ROSATI, ALEXANDRA G · 2015 to 2019
$2.9M
How Maternal Stress Influences Offspring Health & Development in Wild ChimpanzeesR00HD057992 · NICHD · GEORGE WASHINGTON UNIVERSITY · PI MURRAY, CARSON · 2011 to 2013
$726k
NIAID NIH HHS R01 AI058715NIA NIH HHS R01 AG049395NIA NIH HHS R37 AG049395NICHD NIH HHS R00 HD057992
6 · The paper itself

Abstract

Among modern foraging societies, men hunt more than women, who mostly target relatively low-quality, reliable resources (i.e., plants). This difference has long been assumed to reflect human female reproductive constraints, particularly caring for and provisioning mates and offspring. Long-term studies of chimpanzees (Pan troglodytes) enable tests of hypotheses about the possible origins of human sex differences in hunting, prior to pair-bonding and regular provisioning. We studied two eastern chimpanzee communities (Kasekela, Mitumba) in Gombe, Tanzania and one (Kanyawara) in Kibale, Uganda. Relative to males, females had low hunting rates in all three communities, even where they encountered red colobus monkeys (the primary prey of chimpanzees) as often as males did. There was no evidence that clinging offspring hampered female hunting. Instead, consistent with the hypothesis that females should be more risk-averse than males, females at all three sites specialized in low-cost prey (terrestrial/sedentary prey at Gombe; black and white colobus monkeys at Kanyawara). Female dominance rank was positively correlated with red colobus hunting probability only at Kasekela, suggesting that those in good physical condition were less sensitive to the costs of possible failure. Finally, the potential for carcass appropriation by males deterred females at Kasekela (but not Kanyawara or Mitumba) from hunting in parties containing many adult males. Although chimpanzees are not direct analogs of the last common ancestor (LCA) of Pan and Homo, these results suggest that before the emergence of social obligations regarding sharing and provisioning, constraints on hunting by LCA females did not necessarily stem from maternal care. Instead, they suggest that a risk-averse foraging strategy and the potential for losing prey to males limited female predation on vertebrates. Sex differences in hunting behavior would likely have preceded the evolution of the sexual division of labor among modern humans.

Indexed as

MeatPan troglodytesPredatory BehaviorSex FactorsAnimalsColobusFemaleHominidaeMaleSex CharacteristicsTanzaniaUgandaDietForagingHomininHuntingMeat eatingPan troglodytes

Identifiers

PMID28778463
PMCPMC5570454
OpenAlexW2739337262

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.