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 porpoisesInter-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
Author
Faculty/Department
Faculty of Sciences. Biology
Faculty of Pharmaceutical, Biomedical and Veterinary Sciences. Pharmacy
Research group
Systemic Physiological and Ecotoxicological Research (SPHERE)
Toxicological Centre
Publication type
article
Publication
London,
Subject
Biology
Source (journal)
Environmental pollution. - London
Volume/pages
157(2009):2, p. 437-444
ISSN
0269-7491
ISI
000262971900013
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
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 ìg/g lipid weight (lw) and 0.33 ìg/g lw in blubber of harbour seals (n = 28) and 12.4 ìg/g lw and 0.76 ìg/g lw in blubber of harbour porpoises (n = 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. Harbour porpoises and harbour seals present differences in the accumulation of polychlorinated biphenyls and polybrominated diphenyl ethers.
E-info
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