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Polychlorinated biphenyls in freshwater salmonids from the Kerguelen Islands in the Southern Ocean |
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| Authors: | Jaffal A Givaudan N Betoulle S Terreau A Paris-Palacios S Biagianti-Risbourg S Beall E Roche H |
| Institution: | a Laboratoire d’Eco-Toxicologie, EA 2069 Vignes et Vins de Champagne, Université de Reims Champagne-Ardenne, F51687 Reims Cedex 2, France b UMR8079, CNRS, Orsay F-91405, France c Univ Paris-Sud, Ecologie Systématique et Evolution, Orsay F-91405, France d ECOBIOP, UMR 1224 INRA-Université de Pau-Pays de l’Adour F63310 St-Pée-sur-Nivelle, France e IPEV Institut Polaire Français, F29280 Plouzané, France |
| Abstract: | The Subantarctic Kerguelen Islands (49°S, 70°E) contain freshwater ecosystems among the most isolated in the world. Concentrations of polychlorinated biphenyls (PCBs) were assessed in the muscle of 48 brook trout and 38 brown trout caught during summer and spring 2006 in the rivers, lakes and ponds of Kerguelen. The sum of 29 PCBs averaged 404 and 358 ng g−1 lipid, and dioxin-like PCB was 19 and 69 ng g−1 lipid, in brook and brown trout, respectively. The values showed a high variability and some fish accumulated PCBs at levels similar to those of fish from impacted areas. While inter-sex differences were limited, the season and the morphotype appeared to have the most influence. Fish captured in summer had muscle PCB concentrations about three times higher than those caught in spring and the ‘river’ morphotype of brook trout showed the highest PCB levels. |
| Keywords: | PCB accumulation Sub-Antarctic area Salmonids Kerguelen Islands |
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