Arid
DOI10.1093/conphys/cow078
Body water conservation through selective brain cooling by the carotid rete: a physiological feature for surviving climate change?
Strauss, W. Maartin1,2; Hetem, Robyn S.1,3; Mitchell, Duncan1,4; Maloney, Shane K.1,4; O’Brien, Haley D.5; Meyer, Leith C. R.1,6; Fuller, Andrea1,6
通讯作者Strauss, W. Maartin
来源期刊CONSERVATION PHYSIOLOGY
ISSN2051-1434
出版年2017
卷号5
英文摘要

Some mammals have the ability to lower their hypothalamic temperature below that of carotid arterial blood temperature, a process termed selective brain cooling. Although the requisite anatomical structure that facilitates this physiological process, the carotid rete, is present in members of the Cetartiodactyla, Felidae and Canidae, the carotid rete is particularly well developed in the artiodactyls, e.g. antelopes, cattle, sheep and goats. First described in the domestic cat, the seemingly obvious function initially attributed to selective brain cooling was that of protecting the brain from thermal damage. However, hyperthermia is not a prerequisite for selective brain cooling, and selective brain cooling can be exhibited at all times of the day, even when carotid arterial blood temperature is relatively low. More recently, it has been shown that selective brain cooling functions primarily as a water-conservation mechanism, allowing artiodactyls to save more than half of their daily water requirements. Here, we argue that the evolutionary success of the artiodactyls may, in part, be attributed to the evolution of the carotid rete and the resulting ability to conserve body water during past environmental conditions, and we suggest that this group of mammals may therefore have a selective advantage in the hotter and drier conditions associated with current anthropogenic climate change. A better understanding of how selective brain cooling provides physiological plasticity to mammals in changing environments will improve our ability to predict their responses and to implement appropriate conservation measures.


英文关键词Artiodactyl success brain temperature carotid arterial blood temperature osmoregulation physiological plasticity rostral epidural rete mirabile
类型Article
语种英语
国家South Africa ; Australia ; USA
收录类别SCI-E
WOS记录号WOS:000402598000001
WOS关键词ANTELOPE ANTILOCAPRA-AMERICANA ; ARTERIAL-BLOOD TEMPERATURES ; EOCENE-OLIGOCENE TRANSITION ; ANGULARIS OCULI VEIN ; ARID-ZONE MAMMALS ; OX BOS-TAURUS ; HYPOTHALAMIC TEMPERATURE ; ARTIODACTYL SUCCESS ; CORE TEMPERATURE ; NATURAL HABITAT
WOS类目Biodiversity Conservation ; Ecology ; Environmental Sciences ; Physiology
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology ; Physiology
来源机构University of Western Australia
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/198200
作者单位1.Univ Witwatersrand, Sch Physiol, Fac Heath Sci, Brain Funct Res Grp, ZA-2193 Johannesburg, South Africa;
2.Univ South Africa, Dept Environm Sci, ZA-1709 Johannesburg, South Africa;
3.Univ Witwatersrand, Fac Sci, Sch Anim Plant & Environm Sci, ZA-2050 Johannesburg, South Africa;
4.Univ Western Australia, Sch Anat Physiol & Human Biol, Perth, WA 6009, Australia;
5.Oklahoma State Univ, Ctr Hlth Sci, Dept Anat & Cell Biol, Oklahoma City, OK 74107 USA;
6.Univ Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Pretoria, South Africa
推荐引用方式
GB/T 7714
Strauss, W. Maartin,Hetem, Robyn S.,Mitchell, Duncan,et al. Body water conservation through selective brain cooling by the carotid rete: a physiological feature for surviving climate change?[J]. University of Western Australia,2017,5.
APA Strauss, W. Maartin.,Hetem, Robyn S..,Mitchell, Duncan.,Maloney, Shane K..,O’Brien, Haley D..,...&Fuller, Andrea.(2017).Body water conservation through selective brain cooling by the carotid rete: a physiological feature for surviving climate change?.CONSERVATION PHYSIOLOGY,5.
MLA Strauss, W. Maartin,et al."Body water conservation through selective brain cooling by the carotid rete: a physiological feature for surviving climate change?".CONSERVATION PHYSIOLOGY 5(2017).
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