Organochlorinated contaminants in decapod crustaceans from the coasts of Brittany and Normandy (France)

Type Article
Date 2007-04
Language English
Author(s) Bodin Nathalie1, Abarnou Alain1, Le Guellec Anne-Marie1, Loizeau VeroniqueORCID1, Philippon Xavier1
Affiliation(s) 1 : IFREMER, Ctr Brest, Dept Biogeochim & Ecotoxicol, F-29280 Plouzane, France.
Source Chemosphere (0045-6535) (Elsevier), 2007-04 , Vol. 67 , N. 9 , P. S36-S47
DOI 10.1016/j.chemosphere.2006.05.088
WOS© Times Cited 18
Keyword(s) Human diet, France, Brittany, Normandy, Crustaceans, Polychlorobiphenyls
Abstract The contamination and distribution of organ ochlorinated compounds were considered in three crustacean species (edible crab, Cancer pagurus; spider crab, Maja brachydactyla; velvet swimming crab, Necora puber) from five sites along the coasts of Brittany and Normandy (Western and North-Western France). PCBs (16 single congeners), pp'-DDE and HCB were measured in hepatopancreas, gonads and muscle: in all, 175 samples were analysed. The spider crab was the only species found in the five sampling sites, thus enabling comparison between areas. Specimens from Antifer were much more contaminated (Sigma(16)PCBs in hepatopancreas = 2000-4000 ng g(-1) dry weight) than those from other sites (50-1000 ng g(-1) d.w.). Among all the three species, the spider crab appeared more contaminated by PCBs than the edible crab, by a factor 2-3, probably in relation with specific differences in their life cycle. There was no difference due to the gender of the species. Within the different analysed tissues, contamination levels increased from muscle to gonads and hepatopancreas in relation with the fat content. A very similar PCB composition was observed in all samples, PCB fingerprints being characterised by the relative importance of the more persistent PCB congeners: CB153, 138, 180, 187, and 118. Finally, these results were compared to recent food regulations first of maximum marker PCB intake and secondly of maximum dioxin-like PCB intake. By considering the muscle, all samples were far below the regulatory limits; for hepatopancreas and gonads, however, some samples were unfit for human consumption. (c) 2006 Elsevier Ltd. All rights reserved.
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