Sensitivity of Alabama Freshwater Gastropod Species to Nickel Exposure.

IF 3.6 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Environmental Toxicology and Chemistry Pub Date : 2024-09-03 DOI:10.1002/etc.5985

Andrew Barrick, Sean Parham, Paul Johnson, Shannon Brewer, Tham Hoang

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Abstract

Snails are effective bioindicators due to their prolific distribution, high level of endemism, and capacity to accumulate contaminants. Freshwater snails have unique ecological niches which are imperiled by land-use change and the introduction of hazardous chemicals. To assess how environmental alterations affect gastropods, lab-based studies are needed to characterize the toxicity of specific stressors. This can help guide policy decisions and remediation efforts. The aim of this research was to characterize acute toxicity of nickel (Ni) on endemic snails (Somatogyrus georgianus [Walker, 1904], Elimia cahawbensis [Lea, 1861], and Elimia spp.) and measure the accumulation of Ni and mineral elements including calcium (Ca), magnesium, potassium, and sodium (Na). Snails were exposed to six concentrations (25-800 µg/L) of Ni for 96 h. Among the studied snail species, E. cahawbensis was the most sensitive to Ni, with the lowest lethal concentration where 50% of the organisms died (LC50) at 88.88 µg/L Ni after 96 h. The LC50 at 96 h for S. georgianus was 167.78 µg/L Ni, and 393.13 μg/L Ni for Elimia spp. Except for Elimia spp., mortality of the other two snail species corresponded to the whole-body uptake of Ni. Nickel exposure also influenced Ca and Na uptake for Elimia spp. All three endemic species are potential candidate species for evaluating localized effects of human activities, and the present study provides a first step in characterizing how snails would be affected by environmental alterations. More research could further characterize potential effects of other human stressors on these endemic snail species. Future research into subindividual responses and routes of exposure can further elucidate variations in species sensitivity. Environ Toxicol Chem 2024;00:1-11. © 2024 SETAC. This article has been contributed to by U.S. Government employees and their work is in the public domain in the USA.

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阿拉巴马州淡水腹足类物种对镍暴露的敏感性。

蜗牛是有效的生物指标，因为它们分布广泛，具有高度的地方特有性，并且能够积累污染物。淡水蜗牛具有独特的生态位，但由于土地使用的变化和有害化学物质的引入，它们的生态位岌岌可危。为了评估环境变化如何影响腹足类动物，需要进行实验室研究，以确定特定压力源的毒性特征。这有助于指导政策决策和补救工作。本研究旨在确定镍（Ni）对地方性蜗牛（Somatogyrus georgianus [Walker, 1904]、Elimia cahawbensis [Lea, 1861] 和 Elimia spp.）的急性毒性，并测量镍和钙（Ca）、镁、钾和钠（Na）等矿物元素的积累情况。在所研究的蜗牛物种中，E. cahawbensis 对镍最敏感，其最低致死浓度为 88.88 µg/L Ni，96 小时后 50%的生物死亡（LC50）；S. georgianus 96 小时的 LC50 为 167.78 µg/L Ni，Elimia spp 为 393.13 μg/L Ni、其他两种蜗牛的死亡率与镍的全身吸收量一致。这三个地方性物种都是评估人类活动局部影响的潜在候选物种，本研究为确定蜗牛如何受到环境变化的影响迈出了第一步。更多的研究可以进一步确定其他人类压力因素对这些特有蜗牛物种的潜在影响。未来对亚个体反应和接触途径的研究可进一步阐明物种敏感性的变化。环境毒物化学 2024;00:1-11。© 2024 SETAC.本文由美国政府雇员撰写，其作品在美国属于公共领域。

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

Environmental Toxicology and Chemistry 环境科学-毒理学

CiteScore

7.40

自引率

9.80%

发文量

265

审稿时长

3.4 months

期刊介绍： The Society of Environmental Toxicology and Chemistry (SETAC) publishes two journals: Environmental Toxicology and Chemistry (ET&C) and Integrated Environmental Assessment and Management (IEAM). Environmental Toxicology and Chemistry is dedicated to furthering scientific knowledge and disseminating information on environmental toxicology and chemistry, including the application of these sciences to risk assessment.[...] Environmental Toxicology and Chemistry is interdisciplinary in scope and integrates the fields of environmental toxicology; environmental, analytical, and molecular chemistry; ecology; physiology; biochemistry; microbiology; genetics; genomics; environmental engineering; chemical, environmental, and biological modeling; epidemiology; and earth sciences. ET&C seeks to publish papers describing original experimental or theoretical work that significantly advances understanding in the area of environmental toxicology, environmental chemistry and hazard/risk assessment. Emphasis is given to papers that enhance capabilities for the prediction, measurement, and assessment of the fate and effects of chemicals in the environment, rather than simply providing additional data. The scientific impact of papers is judged in terms of the breadth and depth of the findings and the expected influence on existing or future scientific practice. Methodological papers must make clear not only how the work differs from existing practice, but the significance of these differences to the field. Site-based research or monitoring must have regional or global implications beyond the particular site, such as evaluating processes, mechanisms, or theory under a natural environmental setting.

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