Differential biomagnification of PCB, PBDE, Hg and Radiocesium in the food web of the European hake from the NW Mediterranean |
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| Authors: | Harmelin-Vivien Mireille Bodiguel Xavier Charmasson Sabine Loizeau Véronique Mellon-Duval Capucine Tronczyński Jacek Cossa Daniel |
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| Institution: | Aix-Marseille University, Mediterranean Institute of Oceanography (MIO), CNRS/INSU UMR 7294, 13288 Marseille, Cedex 09, France. mireille.harmelin@univ-amu.fr |
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| Abstract: | Consumption of marine organisms represents one of the main exposure sources of contaminants for human populations. To obtain a global view of the contamination in commercial fish in the NW Mediterranean Sea, we analysed four types of priority contaminants (PCBs, PBDEs, Hg and (137)Cs) in the European hake, Merluccius merluccius, from the Gulf of Lions in relation with organism's trophic level (δ(15)N). All contaminants presented a significant increase in concentration in hake muscle with trophic level. However, obvious differences between contaminants were evidenced. Biomagnification factors (BMF and FWMF) along the hake food web were higher for Hg and CB-153 than for BDE-47 and (137)Cs, and increase in contaminant concentration with trophic level occurred at different rates depending on contaminants. Such differences of biomagnification patterns can be related to physico-chemical properties of the different contaminants. |
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