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Preliminary Study of Multiple Stress Response Reactions in the Pond Snail Lymnaea stagnalis Exposed to Trace Metals and a Thiocarbamate Fungicide at Environmentally Relevant Concentrations. | LitMetric

AI Article Synopsis

  • Gastropod mollusks, particularly the pond snail Lymnaea stagnalis, are valuable biological indicators for assessing environmental quality and the impact of pollutants.
  • In a study, snails were exposed to various industrial and agricultural contaminants, revealing distinct patterns of accumulation and biochemical changes such as increased cytochrome P450-related EROD activity and altered cholinesterase activity.
  • The findings highlight Lymnaea stagnalis's sensitivity to pollutants, supporting its use in biomarker research for environmental monitoring and impact assessments.

Article Abstract

Gastropod mollusks have achieved an eminent importance as biological indicators of environmental quality. In the present study, we applied a multibiomarker approach to evaluate its applicability for the pond snail Lymnaea stagnalis, exposed to common industrial and agricultural pollutants at environmentally relevant concentrations. The snails were exposed to copper (Cu, 10 µg L), zinc (Zn, 130 µg L), cadmium (Cd, 15 µg L), or the thiocarbamate fungicide "Tattoo" (91 µg L) during 14 days. Metal treatment and exposure to "Tattoo" caused variable patterns of increase or decrease of metal levels in the digestive gland, with a clear accumulation of only Cd and Zn after respective metal exposure. Treatment with Cu and "Tattoo" caused an increase of cytochrome P450-related EROD activity. Glutathione S-transferase was inhibited by exposure to Cu, Zn, and "Tattoo." Treatment with the "Tattoo" led to an inhibition of cholinesterase activity, whereas Cu and Cd increased its activity. Caspase-3 activity was enhanced by up to 3.3 times in all treatments. A nearly uniform inhibitory effect for oxidative stress response parameters was observed in all kinds of exposure, revealing an inhibition of superoxide dismutase (Mn-SOD) activity, a depression of glutathione (GSH and GSSG) and of protein carbonyl levels. Pollutant-specific effects were observed for the catalase activity, superoxide anion production, and lipid peroxidation levels. Due to the high response sensitivity of Lymnaea stagnalis to chemical impacts, we suggest our study as a contribution for biomarker studies with this species under field conditions.

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Source
http://dx.doi.org/10.1007/s00244-020-00728-9DOI Listing

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