Impact of dispersed fuel oil on cardiac mitochondrial function in polar cod Boreogadus saida

• Published in: Environmental Science and Pollution Research
• Main Authors: Dussauze, Matthieu, Camus, Lionel, Le Floch, Stéphane, Pichavant-Rafini, Karine, Geraudie, Perrine, Coquillé, Nathalie, Lemaire, Philippe, Theron, Michael
• Other Authors: Optimisation des régulations physiologiques (ORPHY (EA 4324)), Université de Brest (UBO)-Centre Hospitalier Régional Universitaire de Brest (CHRU Brest)-Institut Brestois Santé Agro Matière (IBSAM), Université de Brest (UBO)-Université de Brest (UBO), Akvaplan-Niva Tromsø, Norwegian Institute for Water Research (NIVA), Centre de documentation de recherche et d'expérimentations sur les pollutions accidentelles des eaux (Cedre), Cedre, Stress Environnementaux et BIOsurveillance des milieux aquatiques (SEBIO), Institut National de l'Environnement Industriel et des Risques (INERIS)-Université de Reims Champagne-Ardenne (URCA)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Total M&S Paris La Defense, TOTAL FINA ELF
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2014
• Subjects: Oil Dispersant Boreogadus saida Cardiac mitochondria Permeabilised fibre Arctic; Oil; Dispersant; Boreogadus saida; Cardiac mitochondria; Permeabilised fibre; Arctic; [SDV]Life Sciences [q-bio]; polar cod
• Online Access: https://hal.univ-brest.fr/hal-04351030; https://hal.univ-brest.fr/hal-04351030/document; https://hal.univ-brest.fr/hal-04351030/file/Impact_of_dispersed_fuel_oil_on_cardiac.pdf; https://doi.org/10.1007/s11356-014-2618-0

International audience In this study, impact of dispersed oil on cardiac mitochondrial function was assessed in a key species of Arctic marine ecosystem, the polar cod Boreogadus saida. Mature polar cod were exposed during 48 h to dispersed oil (mechanically and chemically) and dispersants alone. The increase observed in ethoxyresorufin-O-deethylase activity and polycyclic aromatic hydrocarbon metabolites in bile indicated no difference in contamination level between fish exposed to chemical or mechanical dispersion of oil. Oil induced alterations of O 2 consumption of permeabilised cardiac fibres showing inhibitions of complexes I and IV of the respiratory chain. Oil did not induce any modification of mitochondrial proton leak. Dispersants did not induce alteration of mitochondrial activity and did not increase oil toxicity. These data suggest that oil exposure may limit the fitness of polar cod and consequently could lead to major disruption in the energy flow of polar ecosystem.