47 citations
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January 2016 in “MethodsX” Hair cortisol analysis is a reliable tool for monitoring long-term stress in captive chimpanzees if certain variables are controlled.
High-stress mothers had lower hair cortisol than low-stress mothers, and daughters' cortisol was linked to their stress response.
May 2023 in “Animal Reproduction Update” High levels of cortisol in hair show long-term stress which can lower fertility in animals.
5 citations
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January 2021 in “PeerJ” Elephant tail-hair can show past stress levels, matching times when stressful events happened.
296 citations
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October 2018 in “General and Comparative Endocrinology” Hair cortisol is a reliable way to measure long-term stress in animals.