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首页> 外文期刊>Parasitology >Parasitic infection alters the physiological response of a marine gastropod to ocean acidification
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Parasitic infection alters the physiological response of a marine gastropod to ocean acidification

机译：寄生虫感染改变了海洋腹足动物对海洋酸化的生理反应

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摘要

Increased hydrogen ion concentration and decreased carbonate ion concentration in seawater are the most physiologically relevant consequences of ocean acidification (OA). Changes to either chemical species may increase the metabolic cost of physiological processes in marine organisms, and reduce the energy available for growth, reproduction and survival. Parasitic infection also increases the energetic demands experienced by marine organisms, and may reduce host tolerance to stressors associated with OA. This study assessed the combined metabolic effects of parasitic infection and OA on an intertidal gastropod, Zeacumantus subcarinatus. Oxygen consumption rates and tissue glucose content were recorded in snails infected with one of three trematode parasites, and an uninfected control group, maintained in acidified (7.6 and 7.4 pH) or unmodified (8.1 pH) seawater. Exposure to acidified seawater significantly altered the oxygen consumption rates and tissue glucose content of infected and uninfected snails, and there were clear differences in the magnitude of these changes between snails infected with different species of trematode. These results indicate that the combined effects of OA and parasitic infection significantly alter the energy requirements of Z. subcarinatus, and that the species of the infecting parasite may play an important role in determining the tolerance of marine gastropods to OA.
机译：海水中氢离子浓度的升高和碳酸盐离子浓度的降低是海洋酸化（OA）最具生理相关性的结果。对任何一种化学物质的改变都可能增加海洋生物体内生理过程的代谢成本，并减少可用于生长，繁殖和生存的能量。寄生虫感染还增加了海洋生物体对能量的需求，并可能降低宿主对与OA相关的应激源的耐受性。这项研究评估了寄生虫感染和OA对潮间腹足纲Zeacumantus subcarinatus的综合代谢作用。在感染了三种吸虫吸虫的一种蜗牛和未感染的对照组中记录了耗氧率和组织葡萄糖含量，该对照组保持在酸化（7.6和7.4 pH）或未改性（8.1 pH）的海水中。暴露于酸性海水中会显着改变感染和未感染蜗牛的耗氧率和组织葡萄糖含量，并且在感染了不同种类吸虫的蜗牛之间，这些变化的幅度也存在明显差异。这些结果表明，OA和寄生虫感染的综合影响显着改变了亚螯虾的能量需求，而且感染寄生虫的种类可能在确定海洋腹足动物对OA的耐受性中起重要作用。

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