气候变化领域集成服务门户(CCPortal): Low potential for evolutionary rescue from climate change in a tropical fish

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DOI	10.1073/PNAS.2011419117
	Low potential for evolutionary rescue from climate change in a tropical fish
	Morgan R.; Finnøen M.H.; Jensen H.; Pélabon C.; Jutfelt F.
发表日期	2021
ISSN	00278424
起始页码	33365
结束页码	33372
卷号	117 期号:52
英文摘要	Climate change is increasing global temperatures and intensifying the frequency and severity of extreme heat waves. How organisms will cope with these changes depends on their inherent thermal tolerance, acclimation capacity, and ability for evolutionary adaptation. Yet, the potential for adaptation of upper thermal tolerance in vertebrates is largely unknown. We artificially selected offspring from wild-caught zebrafish (Danio rerio) to increase (Up-selected) or decrease (Down-selected) upper thermal tolerance over six generations. Selection to increase upper thermal tolerance was also performed on warm-acclimated fish to test whether plasticity in the form of inducible warm tolerance also evolved. Upper thermal tolerance responded to selection in the predicted directions. However, compared to the control lines, the response was stronger in the Down-selected than in the Up-selected lines in which evolution toward higher upper thermal tolerance was slow (0.04 ± 0.008 °C per generation). Furthermore, the scope for plasticity resulting from warm acclimation decreased in the Up-selected lines. These results suggest the existence of a hard limit in upper thermal tolerance. Considering the rate at which global temperatures are increasing, the observed rates of adaptation and the possible hard limit in upper thermal tolerance suggest a low potential for evolutionary rescue in tropical fish living at the edge of their thermal limits. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Artificial selection; Asymmetrical response; CTmax; Global warming; Teleost
语种	英语
scopus关键词	article; artificial selection; climate change; controlled study; critical thermal maximum; greenhouse effect; heat tolerance; nonhuman; progeny; zebra fish; acclimatization; animal; evolution; physiology; temperature; tropic climate; zebra fish; Acclimatization; Animals; Biological Evolution; Climate Change; Temperature; Tropical Climate; Zebrafish
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/179631
作者单位	Department of Biology, Norwegian University of Science and Technology, Trondheim, NO-7491, Norway; Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology, Trondheim, NO-7491, Norway
推荐引用方式 GB/T 7714	Morgan R.,Finnøen M.H.,Jensen H.,et al. Low potential for evolutionary rescue from climate change in a tropical fish[J],2021,117(52).
APA	Morgan R.,Finnøen M.H.,Jensen H.,Pélabon C.,&Jutfelt F..(2021).Low potential for evolutionary rescue from climate change in a tropical fish.Proceedings of the National Academy of Sciences of the United States of America,117(52).
MLA	Morgan R.,et al."Low potential for evolutionary rescue from climate change in a tropical fish".Proceedings of the National Academy of Sciences of the United States of America 117.52(2021).