气候变化领域集成服务门户(CCPortal): Surviving winter on the Qinghai-Tibetan Plateau: Pikas suppress energy demands and exploit yak feces to survive winter

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DOI	10.1073/pnas.2100707118
	Surviving winter on the Qinghai-Tibetan Plateau: Pikas suppress energy demands and exploit yak feces to survive winter
	Speakman, John R.; Chi, Qingsheng; Oldakowski, Lukasz; Fu, Haibo; Fletcher, Quinn E.; Hambly, Catherine; Togo, Jacques; Liu, Xinyu; Piertney, Stuart B.; Wang, Xinghao; Zhang, Liangzhi; Redman, Paula; Wang, Lu; Tang, Gangbin; Li, Yongguo; Cui, Jianguo; Thomson, Peter J.; Wang, Zengli; Glover, Paula; Robertson, Olivia C.; Zhang, Yanming; Wang, Dehua
通讯作者	Speakman, JR (通讯作者)，Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Mol Dev Biol, Beijing 100101, Peoples R China. ; Wang, DH (通讯作者)，Chinese Acad Sci, Inst Zool, State Key Lab Integrated Management Pest Insects, Beijing 100101, Peoples R China. ; Zhang, YM (通讯作者)，Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Qinghai, Peoples R China. ; Speakman, JR (通讯作者)，Univ Aberdeen, Sch Biol Sci, Aberdeen AB24 3FX, Scotland. ; Wang, DH (通讯作者)，Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100101, Peoples R China. ; Zhang, YM (通讯作者)，Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Key Lab Anim Ecol Genom, Xining 810008, Peoples R China. ; Speakman, JR (通讯作者)，Chinese Acad Sci, CAS Ctr Excellence Anim Evolut & Genet, Kunming 650223, Yunnan, Peoples R China. ; Speakman, JR (通讯作者)，Chinese Acad Sci, Ctr Energy Metab & Reprod, Shenzen Inst Adv Technol, Shenzhen Key Lab Metab Hlth, Shenzhen 518055, Peoples R China. ; Wang, DH (通讯作者)，Chinese Acad Sci, CAS Ctr Excellence Biot Interact, Beijing 100101, Peoples R China.
发表日期	2021
ISSN	0027-8424
EISSN	1091-6490
卷号	118 期号:30
英文摘要	The Qinghai-Tibetan Plateau, with low precipitation, low oxygen partial pressure, and temperatures routinely dropping below -30 degrees C in winter, presents several physiological challenges to its fauna. Yet it is home to many endemic mammalian species, including the plateau pika (Ochotona curzoniae). How these small animals that are incapable of hibernation survive the winter is an enigma. Measurements of daily energy expenditure (DEE) using the doubly labeled water method show that pikas suppress their DEE during winter. At the same body weight, pikas in winter expend 29.7% less than in summer, despite ambient temperatures being approximately 25 degrees C lower. Combined with resting metabolic rates (RMRs), this gives them an exceptionally low metabolic scope in winter (DEE/RMRt = 1.60 +/- 0.30; RMRt is resting metabolic rate at thermoneutrality). Using implanted body temperature loggers and filming in the wild, we show that this is achieved by reducing body temperature and physical activity. Thyroid hormone (T3 and T4) measurements indicate this metabolic suppression is probably mediated via the thyroid axis. Winter activity was lower at sites where domestic yak (Bos grunniens) densities were higher. Pikas supplement their food intake at these sites by eating yak feces, demonstrated by direct observation, identification of yak DNA in pika stomach contents, and greater convergence in the yak/pika microbiotas in winter. This interspecific coprophagy allows pikas to thrive where yak are abundant and partially explains why pika densities are higher where domestic yak, their supposed direct competitors for food, are more abundant.
关键词	THYROID-HORMONES CORRELATE RESTING METABOLIC-RATE BROWN ADIPOSE-TISSUE OCHOTONA-CURZONIAE BODY-TEMPERATURE ALPINE MEADOWS CLIMATE-CHANGE ADAPTIVE VALUE RANGE SHIFTS LIFE-HISTORY
英文关键词	winter survival; metabolic suppression; thyroid axis
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000685039000003
来源期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254848
作者单位	[Speakman, John R.; Oldakowski, Lukasz; Fletcher, Quinn E.; Togo, Jacques; Liu, Xinyu; Wang, Xinghao; Wang, Lu] Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Mol Dev Biol, Beijing 100101, Peoples R China; [Chi, Qingsheng; Liu, Xinyu; Tang, Gangbin; Li, Yongguo; Cui, Jianguo; Wang, Dehua] Chinese Acad Sci, Inst Zool, State Key Lab Integrated Management Pest Insects, Beijing 100101, Peoples R China; [Fu, Haibo; Zhang, Liangzhi; Wang, Zengli; Zhang, Yanming] Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Qinghai, Peoples R China; [Speakman, John R.; Hambly, Catherine; Piertney, Stuart B.; Redman, Paula; Thomson, Peter J.; Glover, Paula; Robertson, Olivia C.] Univ Aberdeen, Sch Biol Sci, Aberdeen AB24 3FX, Scotland; [Oldakowski, Lukasz] Univ Bialystok, Fac Biol, PL-15328 Bialystok, Poland; [Fu, Haibo; Wang, Xinghao; Wang, Lu; Wang, Zengli; Wang, Dehua] Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100101, Peoples R China; [Fu, Haibo; Zhang, Li...
推荐引用方式 GB/T 7714	Speakman, John R.,Chi, Qingsheng,Oldakowski, Lukasz,et al. Surviving winter on the Qinghai-Tibetan Plateau: Pikas suppress energy demands and exploit yak feces to survive winter[J]. 中国科学院西北生态环境资源研究院,2021,118(30).
APA	Speakman, John R..,Chi, Qingsheng.,Oldakowski, Lukasz.,Fu, Haibo.,Fletcher, Quinn E..,...&Wang, Dehua.(2021).Surviving winter on the Qinghai-Tibetan Plateau: Pikas suppress energy demands and exploit yak feces to survive winter.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,118(30).
MLA	Speakman, John R.,et al."Surviving winter on the Qinghai-Tibetan Plateau: Pikas suppress energy demands and exploit yak feces to survive winter".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 118.30(2021).