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Why wild giant pandas frequently roll in horse manure.


ABSTRACT: Attraction to feces in wild mammalian species is extremely rare. Here we introduce the horse manure rolling (HMR) behavior of wild giant pandas (Ailuropoda melanoleuca). Pandas not only frequently sniffed and wallowed in fresh horse manure, but also actively rubbed the fecal matter all over their bodies. The frequency of HMR events was highly correlated with an ambient temperature lower than 15 °C. BCP/BCPO (beta-caryophyllene/caryophyllene oxide) in fresh horse manure was found to drive HMR behavior and attenuated the cold sensitivity of mice by directly targeting and inhibiting transient receptor potential melastatin 8 (TRPM8), an archetypical cold-activated ion channel of mammals. Therefore, horse manure containing BCP/BCPO likely bestows the wild giant pandas with cold tolerance at low ambient temperatures. Together, our study described an unusual behavior, identified BCP/BCPO as chemical inhibitors of TRPM8 ion channel, and provided a plausible chemistry-auxiliary mechanism, in which animals might actively seek and utilize potential chemical resources from their habitat for temperature acclimatization.

SUBMITTER: Zhou W 

PROVIDER: S-EPMC7768701 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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Why wild giant pandas frequently roll in horse manure.

Zhou Wenliang W   Yang Shilong S   Li Bowen B   Nie Yonggang Y   Luo Anna A   Huang Guangping G   Liu Xuefeng X   Lai Ren R   Wei Fuwen F  

Proceedings of the National Academy of Sciences of the United States of America 20201207 51


Attraction to feces in wild mammalian species is extremely rare. Here we introduce the horse manure rolling (HMR) behavior of wild giant pandas (<i>Ailuropoda melanoleuca</i>). Pandas not only frequently sniffed and wallowed in fresh horse manure, but also actively rubbed the fecal matter all over their bodies. The frequency of HMR events was highly correlated with an ambient temperature lower than 15 °C. BCP/BCPO (beta-caryophyllene/caryophyllene oxide) in fresh horse manure was found to drive  ...[more]

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