Seasonal thermogenesis and body mass regulation in plateau pikas (Ochotona curzoniae)

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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	被引频次：84[WOS] [WOS记录] [WOS相关记录]
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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