干旱区生态环境知识资源中心(Arid): Heat tolerance in desert rodents is correlated with microclimate at inter- and intraspecific levels

Arid

DOI	10.1007/s00360-021-01352-2
	Heat tolerance in desert rodents is correlated with microclimate at inter- and intraspecific levels
	van Jaarsveld, Barry; Bennett, Nigel C.; Kemp, Ryno; Czenze, Zenon J.; McKechnie, Andrew E.
通讯作者	van Jaarsveld, B (corresponding author), South African Natl Biodivers Inst, South African Res Chair Conservat Physiol, Pretoria, South Africa. ; van Jaarsveld, B (corresponding author), Univ Pretoria, DSI NRF Ctr Excellence, FitzPatrick Inst, Dept Zool & Entomol, Pretoria, South Africa.
来源期刊	JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMS AND ENVIRONMENTAL PHYSIOLOGY
ISSN	0174-1578
EISSN	1432-136X
出版年	2021
卷号	191 期号:3 页码:575-588
英文摘要	Physiological diversity in thermoregulatory traits has been extensively investigated in both endo- and ectothermic vertebrates, with many studies revealing that thermal physiology has evolved in response to selection arising from climate. The majority of studies have investigated how adaptative variation in thermal physiology is correlated with broad-scale climate, but the role of fine-scale microclimate remains less clear. We hypothesised that the heat tolerance limits and evaporative cooling capacity of desert rodents are correlated with microclimates within species-specific diurnal refugia. We tested predictions arising from this hypothesis by comparing thermoregulation in the heat among arboreal black-tailed tree rats (Thallomys nigricauda), Namaqua rock rats (Micaelamys namaquensis) and hairy-footed gerbils (Gerbillurus paeba). Species and populations that occupy hotter diurnal microsites tolerated air temperatures (T-a) similar to 2-4 degrees C higher compared to those species occupying cooler, more thermally buffered microsites. Inter- and intraspecific variation in heat tolerance was attributable to similar to 30% greater evaporative water loss and similar to 44 % lower resting metabolic rates at high T-a, respectively. Our results suggest that microclimates within rodent diurnal refugia are an important correlate of intra- and interspecific physiological variation and reiterate the need to incorporate fine-scale microclimatic conditions when investigating adaptative variation in thermal physiology.
英文关键词	Thermoregulation Microclimate Refugia Variation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000622652500001
WOS类目	Physiology ; Zoology
WOS研究方向	Physiology ; Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350774
作者单位	[van Jaarsveld, Barry; Kemp, Ryno; Czenze, Zenon J.; McKechnie, Andrew E.] South African Natl Biodivers Inst, South African Res Chair Conservat Physiol, Pretoria, South Africa; [van Jaarsveld, Barry; Kemp, Ryno; Czenze, Zenon J.; McKechnie, Andrew E.] Univ Pretoria, DSI NRF Ctr Excellence, FitzPatrick Inst, Dept Zool & Entomol, Pretoria, South Africa; [Bennett, Nigel C.] Univ Pretoria, Mammal Res Inst, Dept Zool & Entomol, Pretoria, South Africa; [Czenze, Zenon J.] Univ New England, Ctr Behav & Physiol Ecol, Zool, Armidale, NSW, Australia
推荐引用方式 GB/T 7714	van Jaarsveld, Barry,Bennett, Nigel C.,Kemp, Ryno,et al. Heat tolerance in desert rodents is correlated with microclimate at inter- and intraspecific levels[J],2021,191(3):575-588.
APA	van Jaarsveld, Barry,Bennett, Nigel C.,Kemp, Ryno,Czenze, Zenon J.,&McKechnie, Andrew E..(2021).Heat tolerance in desert rodents is correlated with microclimate at inter- and intraspecific levels.JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMS AND ENVIRONMENTAL PHYSIOLOGY,191(3),575-588.
MLA	van Jaarsveld, Barry,et al."Heat tolerance in desert rodents is correlated with microclimate at inter- and intraspecific levels".JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMS AND ENVIRONMENTAL PHYSIOLOGY 191.3(2021):575-588.