干旱区生态环境知识资源中心(Arid): Winter thermoregulation in free-ranging pygmy falcons in the Kalahari Desert

Arid

DOI	10.1007/s10336-020-01755-y
	Winter thermoregulation in free-ranging pygmy falcons in the Kalahari Desert
	Lund, Jess 1; Bolopo, Diana 1; Thomson, Robert L.1; Elliott, Dorianne L.2; Arnot, Luke F.3; Kemp, Ryno 4,5; Lowney, Anthony M.1; McKechnie, Andrew E.4,5
通讯作者	McKechnie, Andrew E.
来源期刊	JOURNAL OF ORNITHOLOGY
ISSN	2193-7192
EISSN	2193-7206
出版年	2020
卷号	161 期号:2 页码:549-555
英文摘要	Among birds, pronounced heterothermy tends to be used by small species belonging to phylogenetically older taxa and inhabiting environments with unpredictable and/or seasonally scarce food resources. Previous evidence suggests that a small arid-zone raptor, the pygmy falcon (Polihierax semitorquatus), enters torpor and decreases its body temperature (T-b) to below 31 degrees C on winter nights in the Kalahari Desert, where sub-zero night-time temperatures occur regularly. To confirm that this species has the capacity for heterothermy and to characterise its thermoregulatory patterns under natural conditions, we implanted temperature-sensitive radio transmitters into free-ranging falcons. Based on data from seven individuals, we found no evidence for the substantial reductions in T-b previously reported. The mean minimum rest-phase T-b during the study period was 37.89 +/- 0.67 degrees C, we observed no instances of T-b < 36 degrees C, and air temperature did not significantly influence patterns of thermoregulation. Our results highlight intraspecific variability in heterothermy among birds and reveal that, contrary to previous suggestions, even in mid-winter pygmy falcons may not reduce T-b below normothermic levels.
英文关键词	Body temperature Falconidae Heterothermy Telemetry Torpor
类型	Article
语种	英语
国家	South Africa
收录类别	SCI-E
WOS记录号	WOS:000517057600001
WOS关键词	BODY-TEMPERATURE ; METABOLIC-RATE ; DAILY TORPOR ; BIRDS ; HETEROTHERMY ; RESPONSES ; PATTERNS ; MAMMALS ; ENERGETICS ; NEST
WOS类目	Ornithology
WOS研究方向	Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315045
作者单位	1.Univ Cape Town, FitzPatrick Inst African Ornithol, DST NRF Ctr Excellence, Cape Town, South Africa; 2.Univ Pretoria, Dept Compan Anim Clin Studies, Pretoria, South Africa; 3.Univ Pretoria, Dept Prod Anim Studies, Pretoria, South Africa; 4.South African Natl Biodivers Inst, Conservat Physiol, Pretoria, South Africa; 5.Univ Pretoria, Fitzpatrick Inst, Dept Zool & Entomol, DST NRF Ctr Excellence, Pretoria, South Africa
推荐引用方式 GB/T 7714	Lund, Jess,Bolopo, Diana,Thomson, Robert L.,et al. Winter thermoregulation in free-ranging pygmy falcons in the Kalahari Desert[J],2020,161(2):549-555.
APA	Lund, Jess.,Bolopo, Diana.,Thomson, Robert L..,Elliott, Dorianne L..,Arnot, Luke F..,...&McKechnie, Andrew E..(2020).Winter thermoregulation in free-ranging pygmy falcons in the Kalahari Desert.JOURNAL OF ORNITHOLOGY,161(2),549-555.
MLA	Lund, Jess,et al."Winter thermoregulation in free-ranging pygmy falcons in the Kalahari Desert".JOURNAL OF ORNITHOLOGY 161.2(2020):549-555.