Metabolic rate of two invasive Ponto-Caspian goby species and their native competitors in the context of global warming

IF 2.8 2区生物学 Q2 ECOLOGY

Freshwater Biology Pub Date : 2024-05-22 DOI:10.1111/fwb.14259

Piotr Kłosiński, Jarosław Kobak, Tomasz Kakareko

引用次数: 0

Abstract

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全球变暖背景下两种入侵的庞托-里海虾虎鱼物种及其本地竞争者的代谢率

关于外来虾虎鱼在欧洲水域的扩展，出现了一个问题，即全球变暖是否会加强或抑制这一进程。虾虎鱼原产于庞托-里海地区，那里的气候比欧洲入侵地区温暖。因此，它们在生理上可能比本地物种更能应对气候变暖。我们的目的是确定入侵虾虎鱼与本地虾虎鱼在夏季温度升高时代谢特征的差异。我们使用实验室呼吸器比较了夏季温度升高（25 与 17°C）对鱼类代谢反应的影响，这两个物种对由入侵虾虎鱼和同一生态区的本地对应鱼类组成：入侵鲤科虾虎鱼 Babka gymnotrachelus 与本地欧洲牛头鱼 Cottus gobio，以及入侵猴虾虎鱼 Neogobius fluviatilis 与本地箭鱼 Gobio gobio。尽管属于不同的鱼科，但配对物种具有共同的功能特征，包括形态特征。经过 4 周的驯化后，我们测定了鱼类的标准代谢率（SMR）、最大代谢率（MMR）和有氧范围（AS = MMR-SMR）。在所有温度下，笛鲷的MMR均低于牛头鰕虎鱼，而长尾鰕虎鱼和猴鰕虎鱼的MMR则没有差异。一方面，温度升高并不影响笛鲷和牛头鱼的AS。然而，在所有温度下，梭子蟹的 AS 始终低于牛头鱼。另一方面，温度升高导致猴虎鱼和鳕鱼的 AS 下降。就 AS 而言，入侵者在较高温度下的表现并不总是优于本地物种。然而，入侵者维持较低的SMR，从而降低了生活成本。这些结果表明，全球变暖可能会促进虾虎鱼的入侵，这很可能会增加虾虎鱼在温带淡水系统中的出现并对当地鱼类群落产生影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Freshwater Biology 生物-海洋与淡水生物学

CiteScore

5.90

自引率

3.70%

发文量

162

审稿时长

2 months

期刊介绍： Freshwater Biology publishes papers on all aspects of the ecology of inland waters, including rivers and lakes, ground waters, flood plains and other freshwater wetlands. We include studies of micro-organisms, algae, macrophytes, invertebrates, fish and other vertebrates, as well as those concerning whole systems and related physical and chemical aspects of the environment, provided that they have clear biological relevance. Studies may focus at any level in the ecological hierarchy from physiological ecology and animal behaviour, through population dynamics and evolutionary genetics, to community interactions, biogeography and ecosystem functioning. They may also be at any scale: from microhabitat to landscape, and continental to global. Preference is given to research, whether meta-analytical, experimental, theoretical or descriptive, highlighting causal (ecological) mechanisms from which clearly stated hypotheses are derived. Manuscripts with an experimental or conceptual flavour are particularly welcome, as are those or which integrate laboratory and field work, and studies from less well researched areas of the world. Priority is given to submissions that are likely to interest a wide range of readers. We encourage submission of papers well grounded in ecological theory that deal with issues related to the conservation and management of inland waters. Papers interpreting fundamental research in a way that makes clear its applied, strategic or socio-economic relevance are also welcome. Review articles (FRESHWATER BIOLOGY REVIEWS) and discussion papers (OPINION) are also invited: these enable authors to publish high-quality material outside the constraints of standard research papers.