干旱区生态环境知识资源中心(Arid): Experimental Manipulation of Air Temperature in Captivity Appears Unsuitable for Evaluating Fecal Glucocorticoid Metabolite Responses of Wild-Caught Birds to Heat Exposure

Arid

DOI	10.1086/716043
	Experimental Manipulation of Air Temperature in Captivity Appears Unsuitable for Evaluating Fecal Glucocorticoid Metabolite Responses of Wild-Caught Birds to Heat Exposure
	Ngcamphalala, Celiwe A.; Bouwer, Michelle; Nicolson, Susan W.; Ganswindt, Andre; McKechnie, Andrew E.
通讯作者	McKechnie, AE (corresponding author), South African Natl Biodivers Inst, South African Res Chair Conservat Physiol, POB 754, ZA-0001 Pretoria, South Africa. ; McKechnie, AE (corresponding author), Univ Pretoria, Dept Zool & Entomol, DSI NRF Ctr Excellence, Fitzpatrick Inst, Private Bag X20, ZA-0028 Pretoria, South Africa.
来源期刊	PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY
ISSN	1522-2152
EISSN	1537-5293
出版年	2021
卷号	94 期号:5 页码:330-337
英文摘要	Noninvasive measurement of stress-related alterations in fecal glucocorticoid metabolite (fGCM) concentrations has considerable potential for quantifying physiological responses to very hot weather in free-ranging birds, but practical considerations related to sampling will often make this method feasible only for habituated study populations. Here we evaluate an alternate approach, the use of experimentally manipulated thermal environments for evaluating stress responses to high environmental temperatures in wild-caught birds housed in captivity. Using an enzyme immunoassay utilizing antibodies against 5 beta-pregnane-3 alpha,11 beta,21-triol-20-one-CMO:SA (tetrahydrocorticosterone), we quantified fGCMs in captive individuals of three southern African arid-zone species (southern pied babblers [Turdoides bicolor], white-browed sparrow-weavers [Plocepasser mahali], and southern yellow-billed hornbills [Tockus leucomelas]) experiencing daily air temperature maxima (T-max) ranging from 30 degrees-32 degrees C to 42 degrees-44 degrees C. For none of the three species did T-max emerge as a significant predictor of elevated fGCM concentrations, and no stress response to simulated hot weather was evident. The apparent lack of a stress response to T-max = 42 degrees C in captive southern pied babblers contrasts with linear increases in fGCMs at T-max > 38 degrees C in free-ranging conspecifics. The lack of an effect of T-max on fGCM levels may potentially be explained by several factors, including differences in operative temperatures and the availability of water and food between free-ranging and captive settings or the stress effect of captivity itself. Our results suggest that experimental manipulations of thermal environments experienced by wild-caught captive birds have limited usefulness for testing hypotheses concerning the effects of hot weather events on fGCM (and, by extension, glucocorticoid) concentrations.
英文关键词	captive birds fecal corticosterone metabolites heat stress noninvasive hormone monitoring stress
类型	Editorial Material
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000675592600001
WOS关键词	WHITE-CROWNED SPARROWS ; ENDOCRINE RESPONSES ; BODY CONDITION ; PLASMA-CORTICOSTERONE ; PHYSIOLOGICAL STRESS ; ZEBRA FINCHES ; BEHAVIOR ; EVENTS ; THERMOREGULATION ; POPULATIONS
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/2XILL650/364317
作者单位	[Ngcamphalala, Celiwe A.; Bouwer, Michelle; McKechnie, Andrew E.] South African Natl Biodivers Inst, South African Res Chair Conservat Physiol, POB 754, ZA-0001 Pretoria, South Africa; [Ngcamphalala, Celiwe A.; Bouwer, Michelle; McKechnie, Andrew E.] Univ Pretoria, Dept Zool & Entomol, DSI NRF Ctr Excellence, Fitzpatrick Inst, Private Bag X20, ZA-0028 Pretoria, South Africa; [Nicolson, Susan W.] Univ Pretoria, Dept Zool & Entomol, Private Bag X20, ZA-0028 Pretoria, South Africa; [Ganswindt, Andre] Univ Pretoria, Mammal Res Inst, Private Bag X20, ZA-0028 Pretoria, South Africa; [Ganswindt, Andre] Univ Pretoria, Endocrine Res Lab, Private Bag X20, ZA-0028 Pretoria, South Africa
推荐引用方式 GB/T 7714	Ngcamphalala, Celiwe A.,Bouwer, Michelle,Nicolson, Susan W.,et al. Experimental Manipulation of Air Temperature in Captivity Appears Unsuitable for Evaluating Fecal Glucocorticoid Metabolite Responses of Wild-Caught Birds to Heat Exposure[J],2021,94(5):330-337.
APA	Ngcamphalala, Celiwe A.,Bouwer, Michelle,Nicolson, Susan W.,Ganswindt, Andre,&McKechnie, Andrew E..(2021).Experimental Manipulation of Air Temperature in Captivity Appears Unsuitable for Evaluating Fecal Glucocorticoid Metabolite Responses of Wild-Caught Birds to Heat Exposure.PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY,94(5),330-337.
MLA	Ngcamphalala, Celiwe A.,et al."Experimental Manipulation of Air Temperature in Captivity Appears Unsuitable for Evaluating Fecal Glucocorticoid Metabolite Responses of Wild-Caught Birds to Heat Exposure".PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY 94.5(2021):330-337.