Reproductive state and rank influence patterns of meat consumption in wild female chimpanzees (Pan troglodytes schweinfurthii)

Journal of Human Evolution
Robert C O'MalleyCarson M Murray

Abstract

An increase in faunivory is a consistent component of human evolutionary models. Animal matter is energy- and nutrient-dense and can provide macronutrients, minerals, and vitamins that are limited or absent in plant foods. For female humans and other omnivorous primates, faunivory may be of particular importance during the costly periods of pregnancy and early lactation. Yet, because animal prey is often monopolizable, access to fauna among group-living primates may be mediated by social factors such as rank. Wild chimpanzees (Pan troglodytes) across Africa habitually consume insects and/or vertebrates. However, no published studies have examined patterns of female chimpanzee faunivory during pregnancy and early lactation relative to non-reproductive periods, or by females of different rank. In this study, we assessed the influence of reproductive state and dominance rank on the consumption of fauna (meat and insects) by female chimpanzees of Gombe National Park, Tanzania. Using observational data collected over 38 years, we tested (a) whether faunivory varied by reproductive state, and (b) if high-ranking females spent more time consuming fauna than lower-ranking females. In single-factor models, pregnant females consumed more...Continue Reading

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Citations

Jan 14, 2016·American Journal of Primatology·Carson M MurrayElizabeth V Lonsdorf
Dec 18, 2019·American Journal of Physical Anthropology·Elizabeth V LonsdorfCarson M Murray
Jul 21, 2017·Behavioral Ecology and Sociobiology·Rachel DaleSarah Marshall-Pescini
Feb 3, 2021·Scientific Reports·Jose Luis Gomez-MelaraFederica Amici
Oct 19, 2017·Journal of Human Evolution·Jim MooreFiona Stewart

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