Journal of Stress Physiology & Biochemistry, Vol. 9 No. 3 2013, pp. 272-281 ISSN 1997-0838
Original Text Copyright (cc) 2013 by  Zhu, Zheng, Zhang, Zhang, Wang

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Changes of body mass and thermogenesis in Apodemus chevrieri during cold exposure and rewarming

Zhu Wan-long#,  Zheng Jia,  Zhang Di#,  Zhang lin,  Wang Zheng-kun *

Institute of Zoology, School of life Science of Yunnan Normal University, Kunming 650092, China
# Zhu WL and Zhang D contributed equally to this work.


Received  April  6
, 2013

Environmental cues, such as temperature, play important roles in the regulation of physiology and behavior in small mammals. The aim of the present study was to test the hypothesis that ambient temperature was a cue to induce adjustments in body mass and thermogenic capacity in Apodemus chevrieri. It showed that A. chevrieri increased resting metabolic rate (RMR), nonshivering thermogenesis (NST) and energy intake and decreased body mass and body temperature when exposed to the cold while showed a significant increase in body mass and body temperature after rewarming. The decrease of body temperature can reduce the difference in temperature in environment, save energy consumption. The increase in body mass after rewarming was associated with the higher energy intake. Together, these data supported our hypothesis that ambient temperature was a cue to induce changes in body mass and metabolism in A. chevrieri.

Key words:     Apodemus chevrieri; cold exposure; rewarming; thermogenic capacity

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