Article (Scientific journals)
Inter-species differences for polychlorinated biphenyls and polybrominated diphenyl ethers in marine top predators from the Southern North Sea: Part 2. Biomagnification in harbour seals and harbour porpoises
Weijs, Liesbeth; Dirtu, Alin C; Das, Krishna et al.
2009In Environmental Pollution, 157, p. 445-451
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Keywords :
harbour seal; harbour porpoise; Phoca vitulina; Phocoena phocoena; marine mammals; pollutants; polychlorinated biphenyls; polybrominated diphenyl ethers; North Sea
Abstract :
[en] Harbour porpoises (Phocoena phocoena) and harbour seals (Phoca vitulina) were found to differ in the ability to metabolize polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs). Biomagnification factors (BMFs), calculated between both predators and their prey (sole – Solea solea and whiting – Merlangius merlangus), had a large range of variation (between 0.5 and 91 for PCBs and between 0.6 and 53 for PBDEs). For the higher chlorinated PCBs and the highest brominated PBDEs, the BMF values in adult males were significantly higher than in the juvenile individuals of both species. BMF values of hexa- to octa-PCBs were the highest, suggesting reduced ability to degrade these congeners. Harbour porpoises had higher BMFs for lower chlorinated PCBs and for all PBDEs compared to harbour seals. Other factors, which may influence biomagnification, such as the octanol–water partition coefficients and the trophic level position measured through stable isotope (d15N) analysis, were found to be of lesser importance to predict biomagnification in the studied food chain.
Research center :
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
Disciplines :
Aquatic sciences & oceanology
Environmental sciences & ecology
Zoology
Chemistry
Author, co-author :
Weijs, Liesbeth;  Universiteit Antwerpen - UA > Department of Biology > Laboratory of Ecophysiology, Biochemistry and Toxicology
Dirtu, Alin C;  Universiteit Antwerpen - UA > Toxicological Centre
Das, Krishna  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Ghorghe, Adriana;  Universiteit Antwerpen - UA > Toxicological Centre
Reijnders, Peter;  Institute for Marine Resources and Ecosystem Studies > Dept. 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 Center
Language :
English
Title :
Inter-species differences for polychlorinated biphenyls and polybrominated diphenyl ethers in marine top predators from the Southern North Sea: Part 2. Biomagnification 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 :
445-451
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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