DOI: 10.1111/gcb.13407
论文题名: Heat resistance throughout ontogeny: body size constrains thermal tolerance
作者: Klockmann M. ; Günter F. ; Fischer K.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
卷: 23, 期: 2 起始页码: 686
结束页码: 696
语种: 英语
英文关键词: acclimation
; Bogert effect
; climate change
; constraint
; development
; heat stress resistance
; reproduction
; tropical butterfly
英文摘要: Heat tolerance is a trait of paramount ecological importance and may determine a species' ability to cope with ongoing climate change. Although critical thermal limits have consequently received substantial attention in recent years, their potential variation throughout ontogeny remained largely neglected. We investigate whether such neglect may bias conclusions regarding a species' sensitivity to climate change. Using a tropical butterfly, we found that developmental stages clearly differed in heat tolerance. It was highest in pupae followed by larvae, adults and finally eggs and hatchlings. Strikingly, most of the variation found in thermal tolerance was explained by differences in body mass, which may thus impose a severe constraint on adaptive variation in stress tolerance. Furthermore, temperature acclimation was beneficial by increasing heat knock-down time and therefore immediate survival under heat stress, but it affected reproduction negatively. Extreme temperatures strongly reduced survival and subsequent reproductive success even in our highly plastic model organism, exemplifying the potentially dramatic impact of extreme weather events on biodiversity. We argue that predictions regarding a species' fate under changing environmental conditions should consider variation in thermal tolerance throughout ontogeny, variation in body mass and acclimation responses as important predictors of stress tolerance. © 2016 John Wiley & Sons Ltd 资助项目: We acknowledge financial support from the German Research Council (DFG Fi 846/8-1, DFG GRK2010). FG is doctoral researcher, and MK is associated doctoral researcher of the research training group RESPONSE funded by the German Research Council (DFG GRK2010). We thank two anonymous referees for providing helpful comments on our paper, and Celina Aleith, Angelique Wendorff, Marina Wolz, Stephan Au, Petra Jannasch, Mareike Scharre, Focke Weerts, Beate Johl and Valerie Kreifelts for their help with the third and fourth experiment.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61079
Appears in Collections: 影响、适应和脆弱性
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作者单位: Zoological Institute and Museum, University of Greifswald, Greifswald, Germany
Recommended Citation:
Klockmann M.,Günter F.,Fischer K.. Heat resistance throughout ontogeny: body size constrains thermal tolerance[J]. Global Change Biology,2017-01-01,23(2)