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Microplastic-mediated transport of PCBs? A depuration study with Daphnia magna

View ORCID ProfileZandra Gerdes, View ORCID ProfileMartin Ogonowski, Inna Nybom, Caroline Ek, Margaretha Adolfsson-Erici, Andreas Barth, View ORCID ProfileElena Gorokhova
doi: https://doi.org/10.1101/428151
Zandra Gerdes
1Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, Sweden
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  • For correspondence: zandra.gerdes@aces.su.se
Martin Ogonowski
1Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, Sweden
2Aquabiota Water Research AB, Stockholm, Sweden
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Inna Nybom
1Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, Sweden
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Caroline Ek
1Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, Sweden
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Margaretha Adolfsson-Erici
1Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, Sweden
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Andreas Barth
3Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
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Elena Gorokhova
1Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, Sweden
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  • For correspondence: zandra.gerdes@aces.su.se
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Abstract

The role of microplastic (MP) as a carrier of persistent organic pollutants (POPs) to aquatic organisms has been a topic of debate. However, theoretically, the reverse POP transport can occur at higher relative contaminant concentrations in the organism than in the microplastic. The effect of microplastic on the PCB removal in planktonic animals was evaluated using the cladoceran Daphnia magna with a high body burden of polychlorinated biphenyls (PCB 18, 40, 128 and 209) exposed to a mixture of microplastic and algae (with 77% MP by mass); daphnids exposed to only algae served as the control. As the endpoints, we used PCB body burden, growth, fecundity and elemental composition (%C and %N) of the daphnids. We found that PCB 209 was removed more efficiently in the daphnids fed with microplastic, while there was no difference for the ΣPCBs between the microplastic-exposed and control animals. Effects of the microplastic exposure on fecundity were of low biological significance, even though both the starting PCB body burden and the microplastic exposure concentrations were high and greatly exceeding environmentally relevant concentrations.

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Posted September 26, 2018.
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Microplastic-mediated transport of PCBs? A depuration study with Daphnia magna
Zandra Gerdes, Martin Ogonowski, Inna Nybom, Caroline Ek, Margaretha Adolfsson-Erici, Andreas Barth, Elena Gorokhova
bioRxiv 428151; doi: https://doi.org/10.1101/428151
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Microplastic-mediated transport of PCBs? A depuration study with Daphnia magna
Zandra Gerdes, Martin Ogonowski, Inna Nybom, Caroline Ek, Margaretha Adolfsson-Erici, Andreas Barth, Elena Gorokhova
bioRxiv 428151; doi: https://doi.org/10.1101/428151

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