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Seasonal thermogenesis and body mass regulation in plateau pikas (Ochotona curzoniae)
Wang, Jian-Mei; Zhang, Yan-Ming; Wang, De-Hua
2006-09-01
发表期刊OECOLOGIA
卷号149期号:3页码:373-382
文章类型Article
摘要Changes in photoperiod, ambient temperature and food availability trigger seasonal acclimatization in physiology and behavior of many animals. In the present study, seasonal adjustments in body mass and in several physiological, hormonal, and biochemical markers were examined in wild-captured plateau pikas (Ochotona curzoniae) from the Qinghai-Tibetan plateau. Our results showed that plateau pikas maintained a relatively constant body mass throughout the year and showed no seasonal changes in body fat mass and circulating levels of serum leptin. However, nonshivering thermogenesis, cytochrome c oxidase activity, and mitochondrial uncoupling protein 1 (UCP1) contents in brown adipose tissues were significantly enhanced in winter. Further, serum leptin levels were positively correlated with body mass and body fat mass while negatively correlated with UCP1 contents. Together, these data suggest that plateau pikas mainly depend on increasing thermogenic capacities, rather than decreasing body mass, to cope with cold, and leptin may play a potential role in their thermogenesis and body mass regulation.; Changes in photoperiod, ambient temperature and food availability trigger seasonal acclimatization in physiology and behavior of many animals. In the present study, seasonal adjustments in body mass and in several physiological, hormonal, and biochemical markers were examined in wild-captured plateau pikas (Ochotona curzoniae) from the Qinghai-Tibetan plateau. Our results showed that plateau pikas maintained a relatively constant body mass throughout the year and showed no seasonal changes in body fat mass and circulating levels of serum leptin. However, nonshivering thermogenesis, cytochrome c oxidase activity, and mitochondrial uncoupling protein 1 (UCP1) contents in brown adipose tissues were significantly enhanced in winter. Further, serum leptin levels were positively correlated with body mass and body fat mass while negatively correlated with UCP1 contents. Together, these data suggest that plateau pikas mainly depend on increasing thermogenic capacities, rather than decreasing body mass, to cope with cold, and leptin may play a potential role in their thermogenesis and body mass regulation.
关键词Basal Metabolic Rate Nonshivering Thermogenesis Cytochrome c Oxidase Leptin Plateau Pika (Ochotona Curzonia)
WOS标题词Science & Technology ; Life Sciences & Biomedicine
学科领域生物科学
关键词[WOS]BROWN ADIPOSE-TISSUE ; NON-SHIVERING THERMOGENESIS ; VOLES MICROTUS-OECONOMUS ; NONSHIVERING THERMOGENESIS ; DJUNGARIAN HAMSTER ; BRANDTS VOLES ; DICROSTONYX-GROENLANDICUS ; UNCOUPLING PROTEINS ; ENERGY-EXPENDITURE ; WINTER SURVIVAL
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology
WOS类目Ecology
WOS记录号WOS:000240104600001
引用统计
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/1320
专题中国科学院西北高原生物研究所
作者单位1.Chinese Acad Sci, Inst Zool, Beijing 100080, Peoples R China
2.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810001, Qinghai, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Wang, Jian-Mei,Zhang, Yan-Ming,Wang, De-Hua. Seasonal thermogenesis and body mass regulation in plateau pikas (Ochotona curzoniae)[J]. OECOLOGIA,2006,149(3):373-382.
APA Wang, Jian-Mei,Zhang, Yan-Ming,&Wang, De-Hua.(2006).Seasonal thermogenesis and body mass regulation in plateau pikas (Ochotona curzoniae).OECOLOGIA,149(3),373-382.
MLA Wang, Jian-Mei,et al."Seasonal thermogenesis and body mass regulation in plateau pikas (Ochotona curzoniae)".OECOLOGIA 149.3(2006):373-382.
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