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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
Source PublicationOECOLOGIA
Volume149Issue:3Pages:373-382
SubtypeArticle
AbstractChanges 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.
KeywordBasal Metabolic Rate Nonshivering Thermogenesis Cytochrome c Oxidase Leptin Plateau Pika (Ochotona Curzonia)
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Subject Area生物科学
WOS KeywordBROWN ADIPOSE-TISSUE ; NON-SHIVERING THERMOGENESIS ; VOLES MICROTUS-OECONOMUS ; NONSHIVERING THERMOGENESIS ; DJUNGARIAN HAMSTER ; BRANDTS VOLES ; DICROSTONYX-GROENLANDICUS ; UNCOUPLING PROTEINS ; ENERGY-EXPENDITURE ; WINTER SURVIVAL
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEcology
WOS IDWOS:000240104600001
Citation statistics
Cited Times:49[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/1320
Collection中国科学院西北高原生物研究所
Affiliation1.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
Recommended Citation
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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