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, Gheorghe, Adriana, Reijnders, Peter J. H., Neels, Hugo, Blust, Ronny and Covaci, Adrian (2009) 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. Environmental Pollution, 157 2: 445-451. doi:10.1016/j.envpol.2008.09.025


Author Weijs, Liesbeth
Dirtu, Alin C.
Das, Krishna
Gheorghe, Adriana
Reijnders, Peter J. H.
Neels, Hugo
Blust, Ronny
Covaci, Adrian
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
Journal name Environmental Pollution   Check publisher's open access policy
ISSN 0269-7491
1873-6424
Publication date 2009-02-01
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.envpol.2008.09.025
Open Access Status Not yet assessed
Volume 157
Issue 2
Start page 445
End page 451
Total pages 7
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Formatted abstract
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 (δ15N) analysis, were found to be of lesser importance to predict biomagnification in the studied food chain.
Keyword Biomagnification
Marine mammals
Octanol-water partition coefficients
PBDEs
PCBs
Trophic position
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID EV/46
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: National Research Centre for Environmental Toxicology Publications
 
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