Copepod oxygen consumption along a salinity gradient

IF 0.9 4区生物学 Q3 MARINE & FRESHWATER BIOLOGY

Marine and Freshwater Behaviour and Physiology Pub Date : 2022-07-24 DOI:10.1080/10236244.2022.2104720

Tanguy Soulié, J. Engström-Öst, O. Glippa

引用次数: 1

Abstract

ABSTRACT Climate change-induced salinity decrease is currently occurring in many estuarine coastal zones, due to increased outflow of freshwater. This freshening can be a problem for brackish-water animals, already living on the edge of their salinity tolerance. We measured oxygen consumption of common copepod Eurytemora affinis along a natural salinity gradient in the western Gulf of Finland. The salinity varied between 3 in the inner bay and 7 in the offshore area along the gradient, pH varied between 7.05 and 7.86. Our results show that respiration increased with decreasing salinity, as expected for a genus more commonly found in estuarine/saline waters, even if it has colonised brackish waters. Our results suggest that future decreasing salinity could enhance respiration rate, and so energy requirements, of large-bodied zooplankton in estuarine areas such as the Baltic Sea and could lead to lower food quality availability for coastal planktivorous fish, such as herring and sprat.

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桡足动物沿盐度梯度的耗氧量

气候变化导致的盐度下降目前正在许多河口海岸带发生，原因是淡水流出量增加。这种清新对咸水动物来说是个问题，它们已经生活在耐盐能力的边缘了。我们测量了芬兰湾西部沿自然盐度梯度的普通桡足动物的耗氧量。盐度沿梯度在内湾3 ~近海7之间变化，pH值在7.05 ~ 7.86之间变化。我们的研究结果表明，呼吸随着盐度的降低而增加，正如预期的那样，一个更常见的属在河口/咸水中发现，即使它已经定居在咸淡水中。我们的研究结果表明，未来盐度的降低可能会提高波罗的海等河口地区大型浮游动物的呼吸速率，从而提高能量需求，并可能导致沿海浮游生物鱼类(如鲱鱼和鲱鱼)的食物质量降低。

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

Marine and Freshwater Behaviour and Physiology 生物-海洋与淡水生物学

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Marine and Freshwater Behaviour and Physiology is devoted to the publication of papers covering field and laboratory research into all aspects of the behaviour and physiology of all marine and freshwater animals within the contexts of ecology, evolution and conservation. As the living resources of the world’s oceans, rivers and lakes are attracting increasing attention as food sources for humans and for their role in global ecology, the journal will also publish the results of research in the areas of fisheries biology and technology where the behaviour and physiology described have clear links to the contexts mentioned above. The journal will accept for publication Research Articles, Reviews, Rapid Communications and Technical Notes (see Instructions for authors for details). In addition, Editorials, Opinions and Book Reviews (invited and suggested) will also occasionally be published. Suggestions to the Editor-In-Chief for Special Issues are encouraged and will be considered on an ad hoc basis. With the goal of supporting early career researchers, the journal particularly invites submissions from graduate students and post-doctoral researchers. In addition to recognising the time constraints and logistical limitations their research often faces, and their particular need for a prompt review process, accepted articles by such researchers will be given prominence within the journal (see Instructions for authors for details).