Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/mec.12240 |
Thermal adaptation and acclimation of ectotherms from differing aquatic climates | |
Narum, Shawn R.1,2; Campbell, Nathan R.1; Meyer, Kevin A.3; Miller, Michael R.4; Hardy, Ronald W.2 | |
通讯作者 | Narum, Shawn R. |
来源期刊 | MOLECULAR ECOLOGY |
ISSN | 0962-1083 |
EISSN | 1365-294X |
出版年 | 2013 |
卷号 | 22期号:11页码:3090-3097 |
英文摘要 | To elucidate the mechanisms of thermal adaptation and acclimation in ectothermic aquatic organisms from differing climates, we used a common-garden experiment for thermal stress to investigate the heat shock response of redband trout (Oncorhynchus mykiss gairdneri) from desert and montane populations. Evidence for adaptation was observed as expression of heat shock genes in fish from the desert population was more similar to control (unstressed) fish and significantly different (P0.05) from those from the montane population, while F1 crosses were intermediate. High induction of heat shock proteins (Hsps) in the montane strain appeared to improve short-term survival during first exposure to high water temperatures, but high physiological costs of Hsp production may have led to lower long-term survival. In contrast, the desert strain had significantly lower heat shock response than the montane fish and F1 crosses, suggesting that these desert fish have evolved alternative mechanisms to deal with thermal stress that provide better balance of physiological costs. Genomewide tests of greater than 10000SNPs found multiple SNPs that were significantly associated with survival under thermal stress, including Hsp47 which consistently appeared as a strong candidate gene for adaption to desert climates. Candidate SNPs identified in this study are prime targets to screen more broadly across this species’ range to predict the potential for adaptation under scenarios of climate change. These results demonstrate that aquatic species can evolve adaptive responses to thermal stress and provide insight for understanding how climate change may impact ectotherms. |
英文关键词 | adaptation climate change ectotherms fish gene expression RAD-seq |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000319675300019 |
WOS关键词 | HEAT-SHOCK-PROTEIN ; REDBAND TROUT ; DROSOPHILA-BUZZATII ; STRESS RESISTANCE ; HSP70 EXPRESSION ; GENE-EXPRESSION ; TOLERANCE ; EVOLUTIONARY ; THERMOTOLERANCE ; TEMPERATURES |
WOS类目 | Biochemistry & Molecular Biology ; Ecology ; Evolutionary Biology |
WOS研究方向 | Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/178925 |
作者单位 | 1.Columbia River Intertribal Fish Commiss, Hagerman, ID 83332 USA; 2.Univ Idaho, Hagerman, ID 83332 USA; 3.Idaho Dept Fish & Game, Nampa, ID 83686 USA; 4.Univ Oregon, Inst Mol Biol, Eugene, OR 97403 USA |
推荐引用方式 GB/T 7714 | Narum, Shawn R.,Campbell, Nathan R.,Meyer, Kevin A.,et al. Thermal adaptation and acclimation of ectotherms from differing aquatic climates[J],2013,22(11):3090-3097. |
APA | Narum, Shawn R.,Campbell, Nathan R.,Meyer, Kevin A.,Miller, Michael R.,&Hardy, Ronald W..(2013).Thermal adaptation and acclimation of ectotherms from differing aquatic climates.MOLECULAR ECOLOGY,22(11),3090-3097. |
MLA | Narum, Shawn R.,et al."Thermal adaptation and acclimation of ectotherms from differing aquatic climates".MOLECULAR ECOLOGY 22.11(2013):3090-3097. |
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