Intraspecific Variation in Metabolic Responses of a Cool Water Fish to Increasing Temperatures

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Scott Alexander Jackson, Kelsey N Lucas, Kevin E. Wehrly, Karen Alofs
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引用次数: 0

Abstract

Growing impacts of climate change necessitate predicting species' vulnerability to altered ecosystems. Assessing vulnerability requires understanding how species' physiology, life history, and ecology vary among populations and can be altered by behavioral, plastic, and evolutionary adaptations. To examine intraspecific variation in sensitivity to climate change, we measured metabolic responses to acute and chronic temperature exposures in three rearing pond populations of walleye (Sander vitreus), a cool-water-adapted fish species threatened by climate change. We show significant differences among rearing pond populations in response to increasing temperatures which may originate from broodstock, developmental plasticity, and acclimation. Our results indicate northern walleye may be more tolerant of acute and chronic exposure to higher temperatures by being able to maintain a higher aerobic scope than more southern populations. Furthermore, even over small geographic distances, populations can have significantly different physiological responses to environmental stressors. Quantifying variation in population-specific metabolic responses can inform predictions of growth, reproduction, and fitness across a species range and clarify the importance of within-species diversity in determining vulnerability to environmental stressors.
冷水性鱼类对温度升高的代谢反应的种内差异
气候变化的影响越来越大,因此有必要预测物种在生态系统改变后的脆弱性。评估脆弱性需要了解物种的生理、生活史和生态如何在不同种群之间发生变化,以及如何通过行为、塑性和进化适应而改变。为了研究对气候变化敏感性的种内差异,我们测量了三个饲养池塘中的马口鱼(Sander vitreus)种群对急性和慢性温度暴露的新陈代谢反应,马口鱼是一种适应冷水的鱼类,受到气候变化的威胁。我们发现不同的饲养池塘种群对温度升高的反应存在明显差异,这可能与鱼苗、发育可塑性和适应性有关。我们的研究结果表明,与南方种群相比,北方的马黑鱼能够维持较高的有氧范围,因此可能更能承受急性和慢性暴露于较高温度的情况。此外,即使在较小的地理距离内,种群对环境压力的生理反应也可能存在显著差异。量化种群特异性代谢反应的变化,可以为预测整个物种范围内的生长、繁殖和适应性提供信息,并阐明种内多样性在决定易受环境压力影响程度方面的重要性。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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