Variation in vervet (Chlorocebus aethiops) hair cortisol concentrations reflects ecological disturbance by humans

Primates; Journal of Primatology
Nicolaas H FourieRobin M Bernstein

Abstract

Vervet monkeys (Chlorocebus aethiops) often live in close proximity to humans. Vervets are known to raid crops, homes and gardens in suburban areas leading to human-vervet conflict. In general, primate groups with access to human foods experience increased population densities and intra-group aggression. This suggests high stress loads for vervets living in environments with high levels of human habitat disturbance and close proximity to humans. We tested the hypothesis that populations characterized by high levels of human impact are more physiologically stressed than low human impact populations, and that this increased stress would be reflected in higher concentrations of hair cortisol. We predicted that because females would be less likely to engage in high risk foraging activities, and hence keep more distance from humans than males, their hair cortisol levels should be lower than those in males. We quantified cortisol in the hair of wild caught individuals from populations that experienced different degrees of human habitat disturbance and differences in access to human food. We found that males in high human impact groups had significantly higher hair cortisol concentrations than those in low human impact groups, althoug...Continue Reading

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Citations

Feb 18, 2016·Zoology : Analysis of Complex Systems, ZACS·Nicolaas H FourieRobin M Bernstein
Jul 31, 2018·Journal of Applied Animal Welfare Science : JAAWS·Christian P Howell, Susan M Cheyne
Oct 29, 2018·American Journal of Physical Anthropology·Stefano S K KaburuBrenda McCowan
Dec 13, 2019·Ecological Applications : a Publication of the Ecological Society of America·Elizabeth A BruntonScott E Burnett
May 27, 2017·International Journal of Primatology·Nicola Bryson-MorrisonTatyana Humle
Oct 11, 2020·Conservation Biology : the Journal of the Society for Conservation Biology·Olivier KaisinLaurence Culot

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