Polychlorinated biphenyls in freshwater salmonids from the Kerguelen Islands in the Southern Ocean

• Published in: Environmental Pollution
• Main Authors: Jaffal, Ali, Givaudan, Nicolas, Betoulle, Stéphane, Terreau, Alexandre, Paris-Palacios, Séverine, Biagianti-Risbourg, S., Beall, E., Roche, H.
• Other Authors: UNITE DE RECHERCHE VIGNES ET VINS DE CHAMPAGNE - STRESS ET ENVIRONNEMENT - EA2069 (URVV - SE), Université de Reims Champagne-Ardenne (URCA), Ecologie Systématique et Evolution (ESE), Université Paris-Sud - Paris 11 (UP11)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS), Ecosystèmes, biodiversité, évolution Rennes (ECOBIO), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Centre National de la Recherche Scientifique (CNRS), L'Institut polaire français Paul-Emile Victor (IPEV), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), Ecologie Comportementale et Biologie des Populations de Poissons (ECOBIOP), Institut National de la Recherche Agronomique (INRA)-Université de Pau et des Pays de l'Adour (UPPA), Programme IPEV 409 IMMUNOTOXKER
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2011
• Subjects: PCB accumulation; Sub-Antarctic area; Salmonids; Kerguelen Islan; [SDE.BE]Environmental Sciences/Biodiversity and Ecology; Antarctic; Southern Ocean; Kerguelen; Kerguelen Islands; Antarc*
• Online Access: https://hal.archives-ouvertes.fr/hal-00653911; https://doi.org/10.1016/j.envpol.2011.01.003

International audience 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.