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• W3088442790 endingPage "1119" @default.
• W3088442790 startingPage "1106" @default.
• W3088442790 abstract "Contaminants seldom occur in isolation in the aquatic environment. While pollution of coastal and inland water bodies has received considerable attention to date, there is limited information on potential interactive effects between radionuclides and metals. Whether by accidental or controlled release, such contaminants co-exist in aquatic ecosystems and can pose an enhanced threat to biota. Using a range of biological responses, the study aimed to evaluate relative interactive effects on representative freshwater and marine bivalve species.An integrated, multi-biomarker approach was adopted to investigate response to copper (Cu, 18 μg L-1), a known environmentally relevant genotoxic metal and differing concentrations of phosphorus-32 (32P; 0.1 and 1 mGy d-1), alone and in combination in marine (Mytilus galloprovincialis) and freshwater (Dreissena polymorpha) mussels. Genetic and molecular biomarkers were determined post-exposure and included DNA damage (as measured by the comet assay), micronuclei (MN) formation, γ-H2AX foci induction and the expression of key stress-related genes (i.e. hsp70/90, sod, cat, gst).Overall, using a tissue-specific (i.e. gill and digestive gland) approach, genotoxic response was reflective of exposures where Cu had a slight additive effect on 32P-induced damage across the species (but not all), cell types and dose rates. Multivariate analysis found significant correlations between comet and γ-H2AX assays, across both the tissues. Transcriptional expression of selected genes were generally unaltered in response to contaminant exposures, independent of species or tissues.Our study is the first to explore the interactive effects of ionizing radiation (IR) and Cu on two bivalve species representing two ecological habitats. The complexity of IR-metal interactions demonstrate that extrapolation of findings obtained from single stressor studies into field conditions could be misrepresentative of real-world environments. In turn, environmental protective strategies deemed suitable in protecting biota from a single, isolated stressor may not be wholly adequate." @default.
• W3088442790 created "2020-10-01" @default.
• W3088442790 creator A5046446252 @default.
• W3088442790 creator A5049964076 @default.
• W3088442790 creator A5088340708 @default.
• W3088442790 creator A5090783800 @default.
• W3088442790 date "2020-10-06" @default.
• W3088442790 modified "2023-10-17" @default.
• W3088442790 title "Evaluation of interactive effects of phosphorus-32 and copper on marine and freshwater bivalve mollusks" @default.
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• W3088442790 doi "https://doi.org/10.1080/09553002.2020.1823032" @default.

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