Adapting to an increasingly stressful environment: Experimental evidence for ‘micro-evolutionary priming’

IF 3.7 1区 环境科学与生态学 Q1 ECOLOGY Journal of Animal Ecology Pub Date : 2025-02-19 DOI:10.1111/1365-2656.70012
Shuwen Han, Paul J. Van den Brink, Steven A. J. Declerck
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适应日益紧张的环境:“微进化启动”的实验证据。
在许多自然系统中,动物种群面临的压力越来越大。压力水平往往波动,平均压力水平的长期增加往往伴随着这种波动的更大幅度。微进化适应可能允许种群应对逐渐增加的应激水平,但可能无法防止它们在急性应激事件中灭绝,除非对低应激水平的适应也增加了它们对急性应激的耐受性。我们通过在多代选择实验中将单轮虫萼花臂轮虫种群暴露于四种铜胁迫水平(控制、低、中、高)来验证这一观点,这里称之为“微进化启动”。随后,在普通园林试验中,我们随机选择每个种群的基因型亚群(克隆)暴露于低、中、高铜水平,并评估其多代种群生长表现。与有铜接触史的种群相比,对照种群的基因型在接触中高水平铜时,其生长明显下降,主要原因是死亡率高。值得注意的是,当暴露于低铜水平时,对照种群和适应低铜水平的种群之间的适应度差异非常小,而后者在中铜和高铜水平下的适应度明显优于前者。这些结果强调了微进化启动对种群在不断变化的环境中的表现的潜在强大但迄今为止在很大程度上被忽视的影响。我们讨论了微进化启动对种群持久性和元种群空间生态进化动态的潜在影响。
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来源期刊
Journal of Animal Ecology
Journal of Animal Ecology 环境科学-动物学
CiteScore
9.10
自引率
4.20%
发文量
188
审稿时长
3 months
期刊介绍: Journal of Animal Ecology publishes the best original research on all aspects of animal ecology, ranging from the molecular to the ecosystem level. These may be field, laboratory and theoretical studies utilising terrestrial, freshwater or marine systems.
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