Zinc isotope ratios of bones and teeth as new dietary indicators: results from a modern food web (Koobi Fora, Kenya)

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作者：

Klervia Jaouen

Melanie Beasley

Margaret Schoeninger

Jean-Jacques Hublin

Michael P. Richards

机构：

[1] Max Planck Institute for Evolutionary Anthropology,Department of Human Evolution

[2] University of California Department of Anthropology,Department of Archaeology

[3] Simon Fraser University,undefined

[4] Burnaby,undefined

[5] B.C.,undefined

[6] Canada,undefined

[7] V5A 1S6,undefined

来源：

Scientific Reports | / 6卷

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摘要：

In order to explore the possibilities of using zinc (Zn) stable isotope ratios as dietary indicators, we report here on the measurements of the ratio of stable isotopes of zinc (66Zn/64Zn, expressed here as δ66Zn) in bioapatite (bone and dental enamel) of animals from a modern food web in the Koobi Fora region of the Turkana Basin in Kenya. We demonstrate that δ66Zn values in both bone and enamel allow a clear distinction between carnivores and herbivores from this food web. Differences were also observed between browsers and grazers as well as between carnivores that consumed bone (i.e. hyenas) compared to those that largely consume flesh (i.e. lions). We conclude that Zn isotope ratio measurements of bone and teeth are a new and promising dietary indicator.

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