干旱区生态环境知识资源中心(Arid): Heterothermy as a mechanism to offset energetic costs of environmental and homeostatic perturbations

Arid

DOI	10.1038/s41598-021-96828-0
	Heterothermy as a mechanism to offset energetic costs of environmental and homeostatic perturbations
	Morales, Javier Omar; Walker, Nikki; Warne, Robin W.; Boyles, Justin G.
通讯作者	Morales, JO (corresponding author), Southern Illinois Univ, Sch Biol Sci, Carbondale, IL 62901 USA. ; Morales, JO (corresponding author), Southern Illinois Univ, Cooperat Wildlife Res Lab, Carbondale, IL 62901 USA.
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2021
卷号	11 期号:1
英文摘要	Environmental and biotic pressures impose homeostatic costs on all organisms. The energetic costs of maintaining high body temperatures (T-b) render endotherms sensitive to pressures that increase foraging costs. In response, some mammals become more heterothermic to conserve energy. We measured T-b in banner-tailed kangaroo rats (Dipodomys spectabilis) to test and disentangle the effects of air temperature and moonlight (a proxy for predation risk) on thermoregulatory homeostasis. We further perturbed homeostasis in some animals with chronic corticosterone (CORT) via silastic implants. Heterothermy increased across summer, consistent with the predicted effect of lunar illumination (and predation), and in the direction opposite to the predicted effect of environmental temperatures. The effect of lunar illumination was also evident within nights as animals maintained low T-b when the moon was above the horizon. The pattern was accentuated in CORT-treated animals, suggesting they adopted an even further heightened risk-avoidance strategy that might impose reduced foraging and energy intake. Still, CORT-treatment did not affect body condition over the entire study, indicating kangaroo rats offset decreases in energy intake through energy savings associated with heterothermy. Environmental conditions receive the most attention in studies of thermoregulatory homeostasis, but we demonstrated here that biotic factors can be more important and should be considered in future studies.
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000698985300039
WOS关键词	QUANTITATIVE MAGNETIC-RESONANCE ; RELEASE HORMONAL PREPARATIONS ; TAILED KANGAROO RAT ; DESERT RODENT ; MOONLIGHT AVOIDANCE ; FORAGING BEHAVIOR ; PREDATION RISK ; DIPODOMYS-SPECTABILIS ; TERRITORIAL-DEFENSE ; STRESS RESPONSES
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364675
作者单位	[Morales, Javier Omar; Walker, Nikki; Warne, Robin W.; Boyles, Justin G.] Southern Illinois Univ, Sch Biol Sci, Carbondale, IL 62901 USA; [Morales, Javier Omar; Walker, Nikki; Boyles, Justin G.] Southern Illinois Univ, Cooperat Wildlife Res Lab, Carbondale, IL 62901 USA
推荐引用方式 GB/T 7714	Morales, Javier Omar,Walker, Nikki,Warne, Robin W.,et al. Heterothermy as a mechanism to offset energetic costs of environmental and homeostatic perturbations[J],2021,11(1).
APA	Morales, Javier Omar,Walker, Nikki,Warne, Robin W.,&Boyles, Justin G..(2021).Heterothermy as a mechanism to offset energetic costs of environmental and homeostatic perturbations.SCIENTIFIC REPORTS,11(1).
MLA	Morales, Javier Omar,et al."Heterothermy as a mechanism to offset energetic costs of environmental and homeostatic perturbations".SCIENTIFIC REPORTS 11.1(2021).