气候变化领域集成服务门户(CCPortal): Thermal adaptation of pelage in desert rodents balances cooling and insulation

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DOI	10.1111/evo.14643
	Thermal adaptation of pelage in desert rodents balances cooling and insulation
	Riddell, Eric A.; Patton, James L.; Beissinger, Steven R.
发表日期	2022
ISSN	0014-3820
EISSN	1558-5646
起始页码	3001
结束页码	3013
卷号	76 期号:12
英文摘要	Phenotypic convergence across distantly related taxa can be driven by similar selective pressures from the environment or intrinsic constraints. The roles of these processes on physiological strategies, such as homeothermy, are poorly understood. We studied the evolution of thermal properties of mammalian pelage in a diverse community of rodents inhabiting the Mojave Desert, USA. We used a heat flux device to measure the thermal insulation of museum specimens and determined whether thermal properties were associated with habitat preferences while assessing phylogenetic dependence. Species that prefer arid habitats exhibited lower conductivity and thinner pelage relative to species with other habitat preferences. Despite being thinner, the pelage of arid species exhibited comparable insulation to the pelage of the other species due to its lower conductivity. Thus, arid species have insulative pelage while simultaneously benefitting from thin pelage that promotes convective cooling. We found no evidence of intrinsic constraints or phylogenetic dependence, indicating pelage readily evolves to environmental pressures. Thermoregulatory simulations demonstrated that arid specialists reduced energetic costs required for homeothermy by 14.5% by evolving lower conductivity, providing support for adaptive evolution of pelage. Our study indicates that selection for lower energetic requirements of homeothermy has shaped evolution of pelage thermal properties.
英文关键词	Adaptation; climate change; mammals; morphological evolution; temperature
语种	英语
WOS研究方向	Ecology ; Evolutionary Biology ; Genetics & Heredity
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000869365100001
来源期刊	EVOLUTION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/280644
作者单位	University of California System; University of California Berkeley; Iowa State University; University of California System; University of California Berkeley
推荐引用方式 GB/T 7714	Riddell, Eric A.,Patton, James L.,Beissinger, Steven R.. Thermal adaptation of pelage in desert rodents balances cooling and insulation[J],2022,76(12).
APA	Riddell, Eric A.,Patton, James L.,&Beissinger, Steven R..(2022).Thermal adaptation of pelage in desert rodents balances cooling and insulation.EVOLUTION,76(12).
MLA	Riddell, Eric A.,et al."Thermal adaptation of pelage in desert rodents balances cooling and insulation".EVOLUTION 76.12(2022).