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Variability of PCB burden in 5 fish and sharks species of the French Mediterranean continental slope
Cresson, P.; Fabri, M.-C.; Miralles, F.M.; Dufour, J.-L.; Elleboode, R.; Sevin, K.; Mahé, K.; Bouchoucha, M. (2016). Variability of PCB burden in 5 fish and sharks species of the French Mediterranean continental slope. Environ. Pollut. 212: 374-381. https://dx.doi.org/10.1016/j.envpol.2016.01.044
In: Environmental Pollution. Elsevier: Barking. ISSN 0269-7491; e-ISSN 1873-6424, meer
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| Author keywords |
Bioaccumulation, Continental slope, Gulf of Lions, PCB |
| Auteurs | | Top |
- Cresson, P.
- Fabri, M.-C., meer
- Miralles, F.M.
- Dufour, J.-L.
|
- Elleboode, R.
- Sevin, K.
- Mahé, K.
- Bouchoucha, M.
|
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| Abstract |
Despite being generally located far from contamination sources, deep marine ecosystems are impacted by chemicals like PCB. The PCB contamination in five fish and shark species collected in the continental slope of the Gulf of Lions (NW Mediterranean Sea) was measured, with a special focus on intra- and interspecific variability and on the driving factors. Significant differences occurred between species. Higher values were measured in Scyliorhinus canicula, Galeus melastomus and Helicolenus dactylopterus and lower values in Phycis blennoides and Lepidorhombus boscii. These differences might be explained by specific abilities to accumulate and eliminate contaminant, mostly through cytochrome P450 pathway. Interindividual variation was also high and no correlation was observed between contamination and length, age or trophic level. Despite its major importance, actual bioaccumulation of PCB in deep fish is not as documented as in other marine ecosystems, calling for a better assessment of the factors driving individual bioaccumulation mechanisms and originating high variability in PCB contamination. |
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