干旱区生态环境知识资源中心(Arid): Phenotypic flexibility in heat production and heat loss in response to thermal and hydric acclimation in the zebra finch, a small arid-zone passerine

Arid

DOI	10.1007/s00360-020-01322-0
	Phenotypic flexibility in heat production and heat loss in response to thermal and hydric acclimation in the zebra finch, a small arid-zone passerine
	Wojciechowski, Michal S.; Kowalczewska, Anna; Colominas-Ciuro, Roger; Jefimow, Malgorzata
通讯作者	Wojciechowski, MS
来源期刊	JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMS AND ENVIRONMENTAL PHYSIOLOGY
ISSN	0174-1578
EISSN	1432-136X
英文摘要	To maintain constant body temperature (T-b) over a wide range of ambient temperatures (T-a) endothermic animals require large amounts of energy and water. In hot environments, the main threat to endothermic homeotherms is insufficient water to supply that necessary for thermoregulation. We investigated flexible adjustment of traits related to thermoregulation and water conservation during acclimation to hot conditions or restricted water availability, or both, in the zebra finch,Taeniopygia guttataa small arid-zone passerine. Using indirect calorimetry, we measured changes in whole animal metabolic rate (MR), evaporative heat loss (EHL) andT(b)before and after acclimation to 23 or 40 degrees C, with different availability of water. Additionally, we quantified changes in partitioning of EHL into respiratory and cutaneous avenues in birds exposed to 25 and 40 degrees C. In response to heat and water restriction zebra finches decreased MR, which together with unchanged EHL resulted in increased efficiency of evaporative heat loss. This facilitated more preciseT(b)regulation in heat-acclimated birds. Acclimation temperature and water availability had no effect on the partitioning of EHL into cutaneous or respiratory avenues. At 25 degrees C, cutaneous EHL accounted for similar to 60% of total EHL, while at 40 degrees C, its contribution decreased to similar to 20%. Consistent among-individual differences in MR and EHL suggest that these traits, provided that they are heritable, may be a subject to natural selection. We conclude that phenotypic flexibility in metabolic heat production associated with acclimation to hot, water-scarce conditions is crucial in response to changing environmental conditions, especially in the face of current and predicted climate change.
英文关键词	Energy metabolism Evaporative heat loss Thermoregulation Phenotypic flexibility Passerine
类型	Article ; Early Access
语种	英语
开放获取类型	Other Gold
收录类别	SCI-E
WOS记录号	WOS:000579321300001
WOS关键词	BASAL METABOLIC-RATE ; EVAPORATIVE WATER-LOSS ; AVIAN THERMOREGULATION ; DESERT BIRDS ; PHYSIOLOGICAL ADJUSTMENTS ; SIBERIAN HAMSTERS ; COOLING CAPACITY ; CLIMATE-CHANGE ; BODY-SIZE ; LARKS
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/2XILL650/328368
作者单位	[Wojciechowski, Michal S.; Kowalczewska, Anna; Colominas-Ciuro, Roger] Nicolaus Copernicus Univ, Fac Biol & Vet Sci, Dept Vertebrate Zool & Ecol, Torun, Poland; [Jefimow, Malgorzata] Nicolaus Copernicus Univ, Dept Anim Physiol & Neurobiol, Fac Biol & Vet Sci, Torun, Poland
推荐引用方式 GB/T 7714	Wojciechowski, Michal S.,Kowalczewska, Anna,Colominas-Ciuro, Roger,et al. Phenotypic flexibility in heat production and heat loss in response to thermal and hydric acclimation in the zebra finch, a small arid-zone passerine[J].
APA	Wojciechowski, Michal S.,Kowalczewska, Anna,Colominas-Ciuro, Roger,&Jefimow, Malgorzata.
MLA	Wojciechowski, Michal S.,et al."Phenotypic flexibility in heat production and heat loss in response to thermal and hydric acclimation in the zebra finch, a small arid-zone passerine".JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMS AND ENVIRONMENTAL PHYSIOLOGY