Effects of microplastics alone or with sorbed oil compounds from the water accommodated fraction of a North Sea crude oil on marine mussels (Mytilus galloprovincialis)
| Autor: | González Soto, Nagore, Campos, Leire, Navarro Adorno, Enrique, Bilbao Castellanos, Eider, Guilhermino, Lucia, Cajaraville Bereciartua, Miren Pilare |
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| Přispěvatelé: | European Commission |
| Rok vydání: | 2022 |
| Předmět: |
Mytilus
Environmental Engineering microplastics Microplastics Water oil pollution Pollution Trojan horse effect Isocitrate Dehydrogenase Persistent Organic Pollutants mussels Petroleum dietary exposure Animals Polystyrenes Environmental Chemistry North Sea Plastics Waste Management and Disposal Water Pollutants Chemical Glutathione Transferase water accommodated fraction |
| Zdroj: | Addi. Archivo Digital para la Docencia y la Investigación instname |
| Popis: | Microplastics (MPs) can adsorb persistent organic pollutants such as oil hydrocarbons and may facilitate their transfer to organisms (Trojan horse effect). The aim of this study was to examine the effects of a 21 day dietary exposure to polystyrene MPs of 4.5 mu m at 1000 particles/mL, alone and with sorbed oil compounds from the water accommodated fraction (WAF) of a naphthenic North Sea crude oil at two dilutions (25 % and 100 %), on marine mussels. An addi-tional group of mussels was exposed to 25 % WAF for comparison. PAHs were accumulated in mussels exposed to WAF but not in those exposed to MPs with sorbed oil compounds from WAF (MPs-WAF), partly due to the low concen-tration of PAHs in the studied crude oil. Exposure to MPs or to WAF alone altered the activity of enzymes involved in aerobic (isocitrate dehydrogenase) and biotransformation metabolism (glutathione S-transferase). Prevalence of oo-cyte atresia and volume density of basophilic cells were higher and absorption efficiency lower in mussels exposed to MPs and to WAF than in controls. After 21 days MPs caused DNA damage (Comet assay) in mussel hemocytes. In conclusion, a Trojan horse effect was not observed but both MPs and oil WAF caused an array of deleterious effects on marine mussels at different levels of biological organization. This work was funded by Spanish MINECO (NACE project CTM2016-81130-R), Basque Government (consolidated group IT1302-19 and IT1743-22 and predoctoral fellowship to NGS) and UPV/EHU (VRI grant PLASTOX). Work carried out within the EU project PLASTOX (JPI Oceans 005/2015) and the EU H2020-BG-2005-2 project GRACE (grant agreement number 679266). |
| Databáze: | OpenAIRE |
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