Early contamination of European flounder (Platichthys flesus) by PCDD/Fs and dioxin-like PCBs in European waters |
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| Authors: | Margarida Nunes Filipe Martinho Anaïs Vernisseau Philippe Marchand Bruno Le Bizec Henk W van der Veer Henrique N Cabral Fernando Ramos Miguel A Pardal |
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| Institution: | 1. CFE – Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Apartado 3046, 3001-401 Coimbra, Portugal;2. CEF – Center for Pharmaceutical Studies, Health Sciences Campus, Bromatology Laboratory, Pharmacy Faculty, University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal;3. LUNAM Université, Oniris, Laboratoire d’Étude des Résidus et Contaminants dans les Aliments (LABERCA), CS50707, F-44307 Nantes, France;4. NIOZ – Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Den Burg Texel, The Netherlands;5. Centro de Oceanografia, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal |
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| Abstract: | Contamination levels and profiles of 7 polychlorinated-p-dioxins, 10 polychlorinated furans (PCDD/Fs) and 12 dioxin-like polychlorinated biphenyls (dl-PCBs) were investigated in juvenile European flounder (Platichthys flesus) captured in different nursery areas in the northeastern Atlantic coast across its geographical distribution range. The toxic equivalent concentrations (WHO-TEQfish) were also determined in order to evaluate which P. flesus population was more exposed to dioxin-like toxicity. Juveniles caught in the Sørfjord (Norway) showed the lowest WHO-TEQfish concentration (0.052 pg WHO-TEQfish g−1 wet weight) whereas the highest value was observed in fish from the Wadden Sea (The Netherlands; 0.291 pg WHO-TEQfish g−1 ww), mainly due to the greater contribution of 2,3,7,8-tetrachlorodibenzo-p-dioxin, the most toxic congener. Nonetheless, when comparing the results with existent tissue residue-based toxicity benchmarks, no adverse effects resulting from PCDD/Fs and dl-PCBs are expected to occur in flounder from the studied systems. |
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| Keywords: | PCDD/Fs PCBs Fish Flounder Juvenile Atlantic |
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