Effect of different food restriction levels on body mass regulation in Apodemus chevrieri

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Gong Xue-na, Wan-Long Zhu

 

Southwest Mountain Ecosystem of Yunnan Province Higher Institutes College, School of Life

                           Science of Yunnan Normal University, Kunming; 650500, China

To investigate the relationship between the energy strategy in response to different food restriction levels, body mass, resting metabolic rate (RMR), nonshivering thermogenesis (NST) and cytochrome c oxidase (COX) activity were measured in Apodemus chevrieri. The results showed that RMR, NST and COX activity were significantly decreased in restricted to 90% of ad libitum food intake, but survival rate was 40% in A. chevrieri restricted to 60% of ad libitum food intake. All of the results suggests that A. chevrieri decreased BMR under food restriction, providing a support for the “metabolism switch hypothesis”.

Keywords: Apodemus chevrieri; Body mass; Food restriction

 

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