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Effects of environmentally relevant concentrations of microplastics on amphipods

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dc.contributor.authorRani-Borges, Barbara
dc.contributor.authorMeitern, Richard
dc.contributor.authorTeesalu, Paul
dc.contributor.authorRaudna-Kristoffersen, Merilin
dc.contributor.authorKreitsberg, Randel
dc.contributor.authorHeinlaan, Margit
dc.contributor.authorTuvikene, Arvo
dc.contributor.authorIvask, Angela
dc.date.accessioned2022-10-06T12:07:54Z
dc.date.available2022-10-06T12:07:54Z
dc.date.issued2022
dc.description.abstractLack of microplastics (MP) toxicity studies involving environmentally relevant concentrations and exposure times is concerning. Here we analyzed the potential adverse effects of low density polyethylene (LDPE) MP at environmentally relevant concentration in sub-chronic exposure to two amphipods Gmelinoides fasciatus and Gammarus lacustris, species that naturally compete with each other for their habitats. 14-day exposure to 2 μg/L (8 particles/L corresponding to low exposure) and 2 mg/L (~8400 particles/L, corresponding to high exposure) of 53–100 μm LDPE MP were used to assess ingestion and egestion of MP, evaluate its effects on amphipod mortality, swimming ability and oxidative stress level. Both amphipod species were effectively ingesting and egesting LDPE MP. On the average, 0.8 and 2.5 MP particles were identified in the intestines of each amphipod exposed to 2 μg/L and 2 mg/L LDPE MP, respectively. Therefore, intestinal MP after 14-day exposure did not fully reflect the differences in LDPE MP exposure concentrations. Increased mortality of both amphipods was observed at 2 mg/L LDPE MP and in case of G. lacustris also at 2 μg/L exposure. The effect of LDPE on swimming activity was observed only in case of G. fasciatus. Oxidative stress marker enzymes SOD, GPx and reduced glutathione GSH varied according to amphipod species and LDPE MP concentration. In general G. lacustris was more sensitive towards LDPE MP induced oxidative stress. Overall, the results suggested that in MP polluted environments, G. lacustris may lose its already naturally low competitiveness and become overcompeted by other more resistant species. The fact that in the sub-chronic foodborne exposure to environmentally relevant and higher LDPE MP concentrations all the observed toxicological endpoints were affected refers to the potential of MP to affect and disrupt aquatic communities in the longer perspective.eng
dc.description.abstractThis research was funded by the Estonian Research Council (Estonia) grants PUT1512 (M. Heinlaan and M. Raudna-Kristoffersen) and PRG1427 (M. Heinlaan). This work was also supported by the research grants PSG653 (R. Kreitsberg and R. Meitern) and PRG1496 (A. Ivask) of the Estonian Research Council. The project was carried out in collaboration with Võrtsjärv Centre for Limnology of the Estonian University of Life Sciences (EMU). This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 951963.eng
dc.description.sponsorshipThis research was funded by the Estonian Research Council (Estonia) grants PUT1512 (M. Heinlaan and M. Raudna-Kristoffersen) and PRG1427 (M. Heinlaan). This work was also supported by the research grants PSG653 (R. Kreitsberg and R. Meitern) and PRG1496 (A. Ivask) of the Estonian Research Council. The project was carried out in collaboration with Võrtsjärv Centre for Limnology of the Estonian University of Life Sciences (EMU). This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 951963.eng
dc.identifier.issn0045-6535
dc.identifier.publicationChemosphere, Volume 309, Part 1, December 2022, 136599eng
dc.identifier.urihttp://hdl.handle.net/10492/7794
dc.identifier.urihttps://doi.org/10.1016/j.chemosphere.2022.136599
dc.publisherElsevier
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/951963/EU/TREICLAKEeng
dc.rightsCreative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)eng
dc.rights© 2022 The Authors.
dc.rightsinfo:eu-repo/semantics/openAccesseng
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/eng
dc.subjectLDPEeng
dc.subjectcrustaceanseng
dc.subjectGammarus fasciatuslat
dc.subjectGmelinoides lacustrislat
dc.subjectSiO2
dc.subjectparaquateng
dc.subjectarticleseng
dc.titleEffects of environmentally relevant concentrations of microplastics on amphipodseng
dc.typeinfo:eu-repo/semantics/articleeng

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