Full Length Research Paper
Abstract
Seasonal changes in photoperiod are important environmental factors for small mammals to adjust some physiological processes. In order to further understand the adaptive physiological strategies in Melano-bellied oriental vole (Eothenomys melanogaster) and integrated changes from organism to cell levels, the responses of this species were studied in different photoperiods. Experiment data indicated that Melano-bellied oriental vole exhibited adaptive physiological regulations when exposed to different photoperiod. The plasticity in energy intake, basal metabolic rate (BMR) and nonshivering thermogenesis (NST) was very important for the regulations in energy balance and thermogenesis in Melano-bellied oriental vole exposed to different photoperiod. Change in brown adipose tissue (BAT) cytochrome c oxidase (COX) activity and liver COX activity was one of the cellular basis for adaptive thermogenesis.
Key words: Melano-bellied oriental vole, photoperiod, energy metabolism, brown adipose tissue, cytochrome c oxidase, thermogenesis.
Abbreviation
Abbreviations: BMR, Basal metabolic rate; NST, nonshivering thermogenesis;BAT, brown adipose tissue; COX, cytochrome c oxidase.
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