AI Article Synopsis
- The study examined contamination levels of harmful compounds (PCDD/Fs and dl-PCBs) in juvenile European flounder from various nursery areas along the northeastern Atlantic coast.
- It found the least toxic concentration in flounder from Sørfjord, Norway, while flounder from the Wadden Sea in the Netherlands had the highest levels due to a significant presence of a particularly toxic compound (2,3,7,8-TCDD).
- Despite these varying levels of toxicity across locations, the research concluded that no adverse effects are expected in the flounder due to these contaminants based on existing toxicity benchmarks.
Article 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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| http://dx.doi.org/10.1016/j.marpolbul.2014.05.042 | DOI Listing |
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