Article (Scientific journals)
Inter-species differences for polychlorinated biphenyls and polybrominated diphenyl ethers in marine top predators from the Southern North Sea: Part 1. Accumulation patterns in harbour seals and harbour porpoises
Weijs, Liesbeth; Dirtu, Alin C; Das, Krishna et al.
2009In Environmental Pollution, 157, p. 437-444
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Keywords :
harbour porpoise; harbour seal; Phocoena phocoena; North Sea; pollutants; polychlorinated biphenyls; polybrominated diphenyl ethers; PCBs; PBDEs
Abstract :
[en] Harbour porpoises (Phocoena phocoena) and harbour seals (Phoca vitulina) are two representative top predator species of the North Sea ecosystem. The median values of sum of 21 polychlorinated biphenyl (PCB) congeners and sum of 10 polybrominated diphenyl ether (PBDE) congeners were 23.1 mg/g lipid weight (lw) and 0.33 mg/g lw in blubber of harbour seals (n ¼ 28) and 12.4 mg/g lw and 0.76 mg/g lw in blubber of harbour porpoises (n¼ 35), respectively. For both species, the highest PCB concentrations were observed in adult males indicating bioaccumulation. On the contrary, the highest PBDE concentrations were measured in juveniles, likely due to better-developed metabolic capacities with age in adults. A higher contribution of lower chlorinated and non-persistent congeners, such as CB 52, CB 95, CB 101, and CB 149, together with higher contributions of other PBDE congeners than BDE 47, indicated that harbour porpoises are unable to metabolize these compounds. Harbour seals showed a higher ability to metabolize PCBs and PBDEs.
Research center :
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
Disciplines :
Zoology
Environmental sciences & ecology
Chemistry
Aquatic sciences & oceanology
Author, co-author :
Weijs, Liesbeth;  University of Antwerp, > Laboratory of Ecophysiology, Biochemistry and Toxicology, Department of Biology
Dirtu, Alin C;  Universiteit Antwerpen - UA > Toxicological Centre
Das, Krishna  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Gheorghe, Adriana;  Universiteit Antwerpen - UA > Toxicological Centre
Reijnders, Peter;  Institute for Marine Resources and Ecosystem Studies > Department of Ecology
Neels, Hugo;  Universiteit Antwerpen - UA > Toxicological Centre
Blust, Ronny;  Universiteit Antwerpen - UA > Department of Biology > Laboratory of Ecophysiology, Biochemistry and Toxicology
Covaci, Adrian;  Universiteit Antwerpen - UA > Toxicological Centre
Language :
English
Title :
Inter-species differences for polychlorinated biphenyls and polybrominated diphenyl ethers in marine top predators from the Southern North Sea: Part 1. Accumulation patterns in harbour seals and harbour porpoises
Publication date :
2009
Journal title :
Environmental Pollution
ISSN :
0269-7491
eISSN :
1873-6424
Publisher :
Elsevier Science, Oxford, United Kingdom
Volume :
157
Pages :
437-444
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
IWT - Agentschap voor Innovatie door Wetenschap en Technologie [BE]
FWO - Fonds Wetenschappelijk Onderzoek Vlaanderen [BE]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
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