Trace elements, dioxins and PCBs in different fish species and marine regions: Importance of the taxon and regional features
Type | Article | ||||||||||||||||
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Date | 2023-01 | ||||||||||||||||
Language | English | ||||||||||||||||
Author(s) | Mauffret Aourell1, Chouvelon Tiphaine1, 2, Wessel Nathalie3, Cresson Pierre4, Banaru Daniela5, Baudrier Jerome6, Bustamante Paco7, 8, Chekri Rachida9, Jitaru Petru9, Le Loch Francois10, Mialet Benoit7, Vaccher Vincent11, Harmelin-Vivien Mireille5 | ||||||||||||||||
Affiliation(s) | 1 : Ifremer, CCEM, Rue de L'île d'Yeu, BP 21105, 44311 Nantes Cedex 03, France 2 : Observatoire Pelagis, UAR 3462 La Rochelle Université/CNRS, 5 Allées de L'Océan, 17000 La Rochelle, France 3 : Ifremer, ODE/Vigies, Rue de L'île d'Yeu, BP 21105, 44311 Nantes Cedex 03, France 4 : Ifremer, Channel and North Sea Fisheries Research Unit, 50 Quai Gambetta, BP 699, 62321 Boulogne sur Mer, France 5 : Aix-Marseille Université, Université de Toulon, CNRS, IRD, Mediterranean Institute of Oceanography (MIO), UM110, Marseille, France 6 : Ifremer, Biodivenv, 79 Route de Pointe-Fort, 97 231 Le Robert, France 7 : Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS, La Rochelle Université, 2 rue Olympe de Gouges 17000 La Rochelle, France 8 : Institut Universitaire de France (IUF), 1 rue Descartes 75005 Paris, France 9 : Anses, Laboratory for Food Safety, 14 Rue Pierre et Marie Curie, 94700 Maisons-Alfort, France 10 : University of Brest, CNRS, IRD, Ifremer, LEMAR, 29280 Plouzane, France 11 : Oniris, INRAE, UMR 1329, Laboratoire d’Étude des Résidus et Contaminants dans Les Aliments (LABERCA), F-44307, Nantes, France |
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Source | Environmental Research (0013-9351) (Elsevier BV), 2023-01 , Vol. 216 , N. Part.3 , P. 114624 (13p.) | ||||||||||||||||
DOI | 10.1016/j.envres.2022.114624 | ||||||||||||||||
WOS© Times Cited | 2 | ||||||||||||||||
Keyword(s) | Metals, Persistent organic pollutants, Bioaccumulation, Trophic level, Lipid content, Monitoring | ||||||||||||||||
Abstract | Chemical contaminant concentrations in wild organisms are used to assess environmental status under the European Marine Strategy Framework Directive. However, this approach is challenged by the complex intra- and inter-species variability, and the different regional features. In this study, concentrations in trace elements (As, Cd, Hg and Pb), polychlorinated biphenyls (PCBs), polychlorodibenzo-para-dioxines (PCDDs) and polychlorodibenzofuranes (PCDFs) were monitored in 8 fish species sampled on the continental shelf of three French regions: the Eastern English Channel (EEC) and Bay of Biscay (BoB) in the Northeast Atlantic Ocean, and the Gulf of Lions (GoL) in Western Mediterranean Sea. Our objectives were to identify species or regions more likely to be contaminated and to assess how to take this variability into account in environmental assessment. While concentrations were higher in benthic and demersal piscivores, PCB and PCDD/F concentrations (lipid-weight) were similar in most teleost species. For Cd, Hg and Pb, the trophic group accumulating the highest concentrations depended on the contaminant and region. Concentrations in Hg, PCBs and PCDD/Fs were higher in the EEC and/or GoL than in BoB. Cadmium and Pb concentrations were highest in the BoB. Lipid content accounted for 35%–84% of organic contaminant variability. Lipid normalisation was employed to enhance robustness in the identification of spatial patterns. Contaminant patterns in chondrichthyans clearly differed from that in teleosts. In addition, trophic levels accounted for ≤1% and ≤33% of the contaminant variability in teleost fishes in the EEC and BoB, respectively. Therefore, developing taxa-specific thresholds might be a more practical way forward for environmental assessment than normalisation to trophic levels. |
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