干旱区生态环境知识资源中心(Arid): Regularly drinking desert birds have greater evaporative cooling capacity and higher heat tolerance limits than non-drinking species

Arid

DOI	10.1111/1365-2435.13573
	Regularly drinking desert birds have greater evaporative cooling capacity and higher heat tolerance limits than non-drinking species
	Czenze, Zenon J.1,2; Kemp, Ryno 1,2; van Jaarsveld, Barry 1,2; Freeman, Marc T.1,2; Smit, Ben 3; Wolf, Blair O.4; McKechnie, Andrew E.1,2
通讯作者	McKechnie, Andrew E.
来源期刊	FUNCTIONAL ECOLOGY
ISSN	0269-8463
EISSN	1365-2435
出版年	2020
卷号	34 期号:8 页码:1589-1600
英文摘要	Surface water is a critical resource for many birds inhabiting arid regions, but the implications of regular drinking and dependence on surface water for the evolution of thermal physiology remain largely unexplored. We hypothesized that avian thermoregulation in the heat has evolved in tandem with the use of surface water and predicted that (a) regularly drinking species have a greater capacity to elevate rates of evaporative water loss (EWL) compared to non-drinking species, and (b) heat tolerance limits (HTLs) are higher among drinking species. To test these predictions, we quantified thermoregulatory responses to high air temperature (T-a) in 12 species of passerines from the South African arid zone and combined these with values for an additional five species. We categorized each species as either: (a) water-dependent, regularly drinking, or (b) water-independent, occasional-/non-drinking. In support of our predictions, both conventional and phylogenetically independent analyses revealed that evaporative scope (the ratio of maximum EWL to minimum thermoneutral EWL) during acute heat exposure was significantly higher among drinking species. Moreover, evaporative scope was significantly and positively related to HTL (i.e. maximum air temperature tolerated before the onset of severe hyperthermia). These findings offer new insights into the co-evolution of water dependence, movement ecology and thermal physiology in the context of trade-offs between dehydration avoidance and resistance to lethal hyperthermia in hot desert habitats. A free Plain Language Summary can be found within the Supporting Information of this article.
英文关键词	arid zone birds drinking behaviour evaporative cooling heat tolerance metabolism physiology thermoregulation
类型	Article
语种	英语
国家	South Africa ; USA
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000530560500001
WOS关键词	WILDLIFE WATER DEVELOPMENTS ; AVIAN THERMOREGULATION ; GRANIVOROUS BIRDS ; RESTING METABOLISM ; TEMPERATURES ; ECONOMY ; PATTERNS ; EXCHANGE ; PIGEONS ; FLIGHT
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319053
作者单位	1.South African Natl Biodivers Inst, Conservat Physiol, Pretoria, South Africa; 2.Univ Pretoria, Fitzpatrick Inst, Dept Zool & Entomol, DST NRF Ctr Excellence, Pretoria, South Africa; 3.Rhodes Univ, Dept Zool & Entomol, Grahamstown, South Africa; 4.Univ New Mexico, UNM Biol Dept, Albuquerque, NM 87131 USA
推荐引用方式 GB/T 7714	Czenze, Zenon J.,Kemp, Ryno,van Jaarsveld, Barry,et al. Regularly drinking desert birds have greater evaporative cooling capacity and higher heat tolerance limits than non-drinking species[J],2020,34(8):1589-1600.
APA	Czenze, Zenon J..,Kemp, Ryno.,van Jaarsveld, Barry.,Freeman, Marc T..,Smit, Ben.,...&McKechnie, Andrew E..(2020).Regularly drinking desert birds have greater evaporative cooling capacity and higher heat tolerance limits than non-drinking species.FUNCTIONAL ECOLOGY,34(8),1589-1600.
MLA	Czenze, Zenon J.,et al."Regularly drinking desert birds have greater evaporative cooling capacity and higher heat tolerance limits than non-drinking species".FUNCTIONAL ECOLOGY 34.8(2020):1589-1600.