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2024 (English)In: Marine Environmental Research, ISSN 0141-1136, E-ISSN 1879-0291, Vol. 199, article id 106628Article in journal (Refereed) Published
Abstract [en]
Chemical and microlitter (ML) pollution in three Estonian coastal areas (Baltic Sea) was investigated using mussels (Mytilus trossulus). Polycyclic aromatic hydrocarbons (PAH) in mussel tissues were observed in moderate levels with high bioaccumulation factors for the more hydrophilic and low molecular weight PAH (LMW PAH), namely anthracene and fluorene. Tissue concentrations of polybrominated diphenyl ethers (PBDE) and cadmium within mussel populations exceeded the Good Environmental Status thresholds by more than 200% and 60%, respectively. Multiple contamination at the Muuga Harbour site by tributyltin, high molecular weight PAH, including the highly toxic benzo[c]fluorene and PBDE, coincided with the inhibition of acetylcholinesterase activity and a lower condition index of the mussels. The metabolization and removal of bioaccumulated LMW PAH, reflected in the dominance of oxy-PAH such as anthracene-9,10-dione, is likely associated with the increased activity of glutathione S-transferase in caged mussels. Only a few microplastic particles were observed among the ML in mussel tissues, with coloured cellulose-based microfibers being the most prevalent. The average concentration of ML in mussels was significantly higher at the harbour area than at other sites. The integrated biomarker response index values allowed for the differentiation of pollution levels across studied locations representing high, intermediate, and low pollution levels within the studied area.
Place, publisher, year, edition, pages
Elsevier, 2024
Keywords
Anthropogenic microfibers, Biomarkers, Biomonitoring, Chemical pollution, Mussels
National Category
Environmental Sciences
Identifiers
urn:nbn:se:oru:diva-114656 (URN)10.1016/j.marenvres.2024.106628 (DOI)001265864800001 ()38968804 (PubMedID)2-s2.0-85197380420 (Scopus ID)
Note
This study was funded by: the European Neighbourhood Instrument and co-financed by the European Union (project HAZLESS, grant number: ER90); the project RESPONSE, funded by JPI Oceans through support by Estonian Ministry of the Environment and the Estonian Research Council; European Biodiversity Partnership Biodiversa+(project D2P, grant number: 2021-473), and Environmental Investment Centre (grant number: KIK 17253) and by the Estonian Research Council (grant numbers PRG602, 4-8/23/4).
2024-07-082024-07-082024-07-29Bibliographically approved