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globalchange > 过去全球变化的重建

DOI:	10.1371/journal.pone.0161481
论文题名:	Body Temperature Regulation in Hot Environments
作者:	Jan-Åke Nilsson; Mary Ngozi Molokwu; Ola Olsson
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2016
发表日期:	2016-8-22
卷:	11, 期:8
语种:	英语
英文关键词:	Body temperature ; Birds ; Hyperthermia ; Bird physiology ; Seasons ; Bioenergetics ; Fevers ; Physiological parameters
英文摘要:	Organisms in hot environments will not be able to passively dissipate metabolically generated heat. Instead, they have to revert to evaporative cooling, a process that is energetically expensive and promotes excessive water loss. To alleviate these costs, birds in captivity let their body temperature increase, thereby entering a state of hyperthermia. Here we explore the use of hyperthermia in wild birds captured during the hot and dry season in central Nigeria. We found pronounced hyperthermia in several species with the highest body temperatures close to predicted lethal levels. Furthermore, birds let their body temperature increase in direct relation to ambient temperatures, increasing body temperature by 0.22°C for each degree of increased ambient temperature. Thus to offset the costs of thermoregulation in ambient temperatures above the upper critical temperature, birds are willing to let their body temperatures increase by up to 5°C above normal temperatures. This flexibility in body temperature may be an important mechanism for birds to adjust to predicted increasing ambient temperatures in the future.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0161481&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/23528
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

Files in This Item:

File Name/ File Size	Content Type	Version	Access	License
journal.pone.0161481.PDF（305KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Department of Biology, Lund University, SE-223 62, Lund, Sweden;Fauna & Flora International, 1000, Monrovia 10, Liberia;A.P. Leventis Ornithological Research Institute, P.O. Box 13404, Jos, Nigeria;Department of Biology, Lund University, SE-223 62, Lund, Sweden

Recommended Citation:

Jan-Åke Nilsson,Mary Ngozi Molokwu,Ola Olsson. Body Temperature Regulation in Hot Environments[J]. PLOS ONE,2016-01-01,11(8)

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