Seasonal variations of low pesticides contamination and biomarker responses in marine bivalves from French estuaries.

Autor: Lerebours A; UMRi CNRS LIENSs, Université de La Rochelle, Littoral Environnement et Sociétés, 2 rue Olympe de Gouges, La Rochelle 17 000, France. Electronic address: adelaide.lerebours@univ-lr.fr., Diallo T; UMRi CNRS LIENSs, Université de La Rochelle, Littoral Environnement et Sociétés, 2 rue Olympe de Gouges, La Rochelle 17 000, France; ANSES, Laboratory for Food Safety, F-94701 Maisons-Alfort, France., Lecureuil A; UMRi CNRS LIENSs, Université de La Rochelle, Littoral Environnement et Sociétés, 2 rue Olympe de Gouges, La Rochelle 17 000, France; Centre de documentation, de recherche et d'expérimentations sur les pollutions accidentelles des eaux (CEDRE), 715 rue Alain Colas, Brest 29 218, France., Receveur J; Centre de documentation, de recherche et d'expérimentations sur les pollutions accidentelles des eaux (CEDRE), 715 rue Alain Colas, Brest 29 218, France., Huet V; UMRi CNRS LIENSs, Université de La Rochelle, Littoral Environnement et Sociétés, 2 rue Olympe de Gouges, La Rochelle 17 000, France., Parinet J; ANSES, Laboratory for Food Safety, F-94701 Maisons-Alfort, France., Guérin T; ANSES, Strategy and Programmes Department, F-94701 Maisons-Alfort, France., Le Floch S; Centre de documentation, de recherche et d'expérimentations sur les pollutions accidentelles des eaux (CEDRE), 715 rue Alain Colas, Brest 29 218, France., Thomas H; UMRi CNRS LIENSs, Université de La Rochelle, Littoral Environnement et Sociétés, 2 rue Olympe de Gouges, La Rochelle 17 000, France.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2023 Jul; Vol. 192, pp. 114988. Date of Electronic Publication: 2023 May 20.
DOI: 10.1016/j.marpolbul.2023.114988
Abstrakt: Biomarkers involved in detoxification process (GST), oxidative stress (SOD and MDA), immune response (Laccase) and neurotoxic disorders (AChE) were analysed in Pacific oysters and blue mussels collected from 4 locations within the Pertuis sea (France). Seasonal variations of total pesticide mean concentrations were found in seawater with metolachlor being the main pesticide measured (up to 32 ng/L). The majority of pesticide concentrations in sediment were below the LOD. Seasonal contamination differences were evidenced for chlortoluron, especially in mussels where concentrations reached 16 ng/g (wet weight) during the winter, in the Charente estuary, but no relationships with any of the biomarkers selected arisen. Actually, low concentrations of alpha-, beta-BHC and alachlor were correlated to GST activity, and low levels of hexachlorobenzene were linked to the AChE activity and MDA content in oysters. In mussels, low concentrations of methylparathion, parathion and beta-BHC were correlated to laccase.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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