气候变化领域集成服务门户(CCPortal): Does size-selective harvesting erode adaptive potential to thermal stress?

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DOI	10.1002/ece3.11007
	Does size-selective harvesting erode adaptive potential to thermal stress?
	Sadler, Daniel E.; van Dijk, Stephan; Karjalainen, Juha; Watts, Phillip C.; Uusi-Heikkila, Silva
发表日期	2024
ISSN	2045-7758
起始页码	14
结束页码	2
卷号	14 期号:2
英文摘要	Overharvesting is a serious threat to many fish populations. High mortality and directional selection on body size can cause evolutionary change in exploited populations via selection for a specific phenotype and a potential reduction in phenotypic diversity. Whether the loss of phenotypic diversity that accompanies directional selection impairs response to environmental stress is not known. To address this question, we exposed three zebrafish selection lines to thermal stress. Two lines had experienced directional selection for (1) large and (2) small body size, and one was (3) subject to random removal of individuals with respect to body size (i.e. line with no directional selection). Selection lines were exposed to three temperatures (elevated, 34 degrees C; ambient, 28 degrees C; low, 22 degrees C) to determine the response to an environmental stressor (thermal stress). We assessed differences among selection lines in their life history (growth and reproduction), physiological traits (metabolic rate and critical thermal max) and behaviour (activity and feeding behaviour) when reared at different temperatures. Lines experiencing directional selection (i.e. size selected) showed reduced growth rate and a shift in average phenotype in response to lower or elevated thermal stress compared with fish from the random-selected line. Our data indicate that populations exposed to directional selection can have a more limited capacity to respond to thermal stress compared with fish that experience a comparable reduction in population size (but without directional selection). Future studies should aim to understand the impacts of environmental stressors on natural fish stocks. Size selection can act in tandem with diversity loss to reduce adaptive potential. Here, we show directional selection magnifies the effect of diversity loss alone to increase a population's susceptibility to thermal stress.image
英文关键词	adaptive potential; fisheries; phenotypic diversity; size selection; thermal stress
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目	Ecology ; Evolutionary Biology
WOS记录号	WOS:001157569000001
来源期刊	ECOLOGY AND EVOLUTION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302337
作者单位	University of Jyvaskyla
推荐引用方式 GB/T 7714	Sadler, Daniel E.,van Dijk, Stephan,Karjalainen, Juha,et al. Does size-selective harvesting erode adaptive potential to thermal stress?[J],2024,14(2).
APA	Sadler, Daniel E.,van Dijk, Stephan,Karjalainen, Juha,Watts, Phillip C.,&Uusi-Heikkila, Silva.(2024).Does size-selective harvesting erode adaptive potential to thermal stress?.ECOLOGY AND EVOLUTION,14(2).
MLA	Sadler, Daniel E.,et al."Does size-selective harvesting erode adaptive potential to thermal stress?".ECOLOGY AND EVOLUTION 14.2(2024).