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Persistent organic pollutants and methoxylated PBDEs in harbour porpoises from the North Sea from 1990 until 2008: Young wildlife at risk? Weijs, L.; van Elk, C.; Das, K.; Blust, R.; Covaci, A. (2010). Persistent organic pollutants and methoxylated PBDEs in harbour porpoises from the North Sea from 1990 until 2008: Young wildlife at risk? Sci. Total Environ. 409(1): 228-237. dx.doi.org/10.1016/j.scitotenv.2010.09.035 In: Science of the Total Environment. Elsevier: Amsterdam. ISSN 0048-9697; e-ISSN 1879-1026

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 216127 [ download pdf ]

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Trefwoorden

Aquatic organisms > Marine organisms > Aquatic mammals > Marine mammals Chemical compounds > Organic compounds > Hydrocarbons > Halogenated hydrocarbons > Chlorinated hydrocarbons > DDT Chemical compounds > Organic compounds > Hydrocarbons > Unsaturated hydrocarbons > Aromatic hydrocarbons > PCB Pesticides Phocoena phocoena (Linnaeus, 1758) [WoRMS] ANE, Europa [Marine Regions] Marien/Kust

Author keywords

Harbour porpoises; Calves; 1990-2008; PCBs; PBDEs; MeO-PBDEs; HCB;Chlordanes; Pesticides; Temporal trends

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Auteurs		Top
Weijs, L. van Elk, C. Das, K.	Blust, R. Covaci, A.

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Abstract

In the European North Sea, harbour porpoises are top predators with relatively long life spans and a limited capacity for metabolic biotransformation of contaminants compared to some other marine mammal species. As such, they are exposed to a mixture of persistent pollutants, such as polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), DDT and metabolites (DDXs), hexachlorobenzene (HCB) and chlordanes (CHLs) that bioaccumulate in their tissues. We report here on the levels of persistent organic pollutants and of the naturally-produced methoxylated PBDEs (MeO-PBDEs) in blubber, liver and kidney of harbour porpoise neonates (n = 3), calves (n = 15), juveniles (n = 6) and adults (n = 4) of the southern North Sea. Concentrations of almost all contaminant classes decrease slightly in all age groups over the period 1990–2008. For some classes (e.g. PCBs and DDXs) however, levels seem to increase little in harbour porpoise calves. In all animals, blubber had the highest concentrations, followed by liver and kidney, whereas liver and kidney were the preferred tissues for several compounds, such as octa- and deca-PCBs. Our data suggest that harbour porpoises calves are exposed to higher or comparable concentrations of POPs and of MeO-PBDEs and somewhat different patterns of selected POPs than adults, potentially placing them, and the entire population, at a disproportionate risk for exposure-related health effects.

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