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Related Experiment Videos

Do "savanna" chimpanzees consume C4 resources?

M Sponheimer1, J E Loudon, D Codron

  • 1Department of Anthropology, University of Colorado at Boulder, 80309, USA. msponheimer@yahoo.com

Journal of Human Evolution
|April 25, 2006
PubMed
Summary
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Fongoli chimpanzees consume minimal C(4) resources despite local abundance, unlike australopiths. This contrasts with the dietary flexibility of baboons (Papio), making them a better model for early hominin diets.

Area of Science:

  • Paleoanthropology
  • Primate Ecology
  • Isotope Geochemistry

Background:

  • Stable carbon isotope studies indicate South African australopiths consumed significant C(4) resources.
  • Limited data exists on C(4) resource consumption by chimpanzees, particularly in arid environments.

Purpose of the Study:

  • To investigate C(4) resource consumption by chimpanzees in the Fongoli region, one of the driest chimpanzee habitats.
  • To compare the dietary patterns of Fongoli chimpanzees with those of australopiths and baboons (Papio).

Main Methods:

  • Analysis of stable carbon isotope ratios in 36 chimpanzee hair samples from Fongoli.
  • Comparison of isotopic data with known C(4) and C(3) resource availability and diets of other primates.

Main Results:

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  • Fongoli chimpanzees showed remarkably homogeneous stable carbon isotope values, indicating very low C(4) vegetation or animal consumption.
  • Despite local abundance of C(4) resources, Fongoli chimpanzees primarily consumed C(3) resources, contrasting with australopiths' varied diets.
  • Baboons (Papio) exhibited dietary variability with a tendency towards C(4) consumption, suggesting greater trophic flexibility.

Conclusions:

  • Fongoli chimpanzees exhibit a narrow dietary niche, consuming minimal C(4) resources, which differs significantly from australopiths.
  • The dietary flexibility of baboons (Papio) in consuming C(4) savanna resources makes them a more suitable ecological analog for australopiths than chimpanzees.