干旱区生态环境知识资源中心(Arid): Thermoregulatory differences in African mole-rat species from disparate habitats: Responses and limitations

Arid

DOI	10.1016/j.jtherbio.2019.102495
	Thermoregulatory differences in African mole-rat species from disparate habitats: Responses and limitations
	McGowan, Natasha E.1; Scantlebury, David M.1; Bennett, Nigel C.2; Maule, Aaron G.1; Marks, Nikki J.1
通讯作者	Marks, Nikki J.
来源期刊	JOURNAL OF THERMAL BIOLOGY
ISSN	0306-4565
出版年	2020
卷号	88
英文摘要	Individuals and populations possess physiological adaptations to survive local environmental conditions. To occur in different regions where ambient temperature varies, animals must adopt appropriate thermoregulatory mechanisms. Failure to adjust to environmental challenges may result in species distributional range shifts or decreased viability. African mole-rats (Bathyergidae) occupy various habitats in sub-Saharan Africa from deserts to montane regions to mesic coastal areas. We examined thermoregulatory characteristics of three African molerat species originating from disparate (montane, savannah, and arid/semi-arid) habitats. Animals were exposed to various ambient temperatures, whilst core body temperature and the surface temperature of different body parts were measured. Oxygen consumption was determined as a measure of heat production. Core body temperatures of Natal (montane) mole-rats (Cryptomys hottentotus natalensis) increased significantly at ambient temperatures >24.5 degrees C, while those of the highveld (Cryptomys hottentotus pretoriae) (savannah) and Damaraland (Fukomys damarensis) (arid/semi-arid) mole-rats remained within narrower ranges. In terms of surface temperature variation, while pedal surfaces were important in regulating heat loss in Natal and Damaraland mole-rats at high ambient temperatures, the ventral surface was important for heat dissipation in Damaraland and highveld mole-rats. This study provides evidence of the variation and limitations of thermo-physiological mechanisms for three mole-rat species relative to their habitats. Information on physiological adaptations to particular habitats may inform predictive modelling of species movements, declines, and extinctions in response to a changing environment, such as climate change.
英文关键词	Mole-rat Temperature Thermoregulation Habitat Climate change Adaptation
类型	Article
语种	英语
国家	North Ireland ; South Africa
收录类别	SCI-E
WOS记录号	WOS:000518869900021
WOS关键词	BASAL METABOLIC-RATE ; SMALL MAMMALS ; SPINY MICE ; NONSHIVERING THERMOGENESIS ; PHYSIOLOGICAL ADAPTATIONS ; ACOMYS-CAHIRINUS ; CRYPTOMYS ; RODENTIA ; HEAT ; BATHYERGIDAE
WOS类目	Biology ; Zoology
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315098
作者单位	1.Queens Univ Belfast, Sch Biol Sci, Inst Global Food Secur, 19 Chorine Gardens, Belfast BT9 5DL, Antrim, North Ireland; 2.Univ Pretoria, Mammal Res Inst, Dept Zool & Entomol, ZA-0001 Pretoria, South Africa
推荐引用方式 GB/T 7714	McGowan, Natasha E.,Scantlebury, David M.,Bennett, Nigel C.,et al. Thermoregulatory differences in African mole-rat species from disparate habitats: Responses and limitations[J],2020,88.
APA	McGowan, Natasha E.,Scantlebury, David M.,Bennett, Nigel C.,Maule, Aaron G.,&Marks, Nikki J..(2020).Thermoregulatory differences in African mole-rat species from disparate habitats: Responses and limitations.JOURNAL OF THERMAL BIOLOGY,88.
MLA	McGowan, Natasha E.,et al."Thermoregulatory differences in African mole-rat species from disparate habitats: Responses and limitations".JOURNAL OF THERMAL BIOLOGY 88(2020).