Combined toxicity of microplastics and cadmium on the zebrafish embryos (Danio rerio)

The Science of the Total Environment
Run ZhangLingling Wu

Abstract

The effects of microplastics (MPs) on organisms have drawn a worldwide attention in the recent years. In this study, zebrafish embryos were employed to assess the combined effects of MPs and cadmium (Cd) on the aquatic organisms. Lethal and sublethal effects were recorded at 8, 24, 32, 48 and 96 hpe (hour post exposure, hpe). The exposure under a series concentration of MPs and/or an environmental level Cd has the negative impacts on survival and heart rate (HR). And there was a positive correlation between MPs concentration and lethal and sublethal toxicity under combined exposure. The physiological parameters showed that the mixture of two stressors had the antagonistic toxicity under low concentration of MPs (0.05, 0.1 mg/L) while the synergistic sublethal toxicity under high levels of MPs (1, 5, 10 mg/L) on zebrafish embryos. Both the scanning electron micrographs (SEM) and fluorescence microscope photos suggested an electrostatic interaction and weak physical forces generated between MPs and chorion membrane. It is inferred that the 10 μm MPs could induce the protective effect of chorion membrane and cause complex toxicities with Cd. But when it involved with other pollutants, the toxic effects and mechanism are still wait...Continue Reading

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Citations

Jul 8, 2021·Journal of Hazardous Materials·Evgenios AgathokleousEdward J Calabrese
Jul 26, 2021·The Science of the Total Environment·Yangmei YuTero Luukkonen
Jul 21, 2021·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Hye-Jin EomJae-Sung Rhee
Sep 2, 2021·The Science of the Total Environment·Ana L Patrício SilvaTeresa Rocha-Santos
Sep 17, 2021·Environmental Science and Pollution Research International·Sukhendu MaityKousik Pramanick
Aug 19, 2021·Environmental Toxicology and Chemistry·Gabriela Kalčíková, Mirco Bundschuh

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