EROD activity in liver and gills of polar cod () exposed to waterborne and dietary crude oil

• Published in: Marine Environmental Research
• Main Authors: Nahrgang, Jasmine, Jönsson, Martina, Camus, Lionel
• Other Authors: Department of Arctic and Marine BioSciences, University of Tromsø (UiT)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2010
• Subjects: crude oil; EROD activity; polar cod; Arctic; gills; liver
• Online Access: https://hal.archives-ouvertes.fr/hal-00598200; https://hal.archives-ouvertes.fr/hal-00598200/document; https://hal.archives-ouvertes.fr/hal-00598200/file/PEER_stage2_10.1016%252Fj.marenvres.2010.02.003.pdf; https://doi.org/10.1016/j.marenvres.2010.02.003

International audience Polar cod an indicator species for biomonitoring in the Arctic was exposed to crude oil in waterborne and dietary experiments. Ethoxyresorufin O-deethylase (EROD) activity was measured in liver and gills of polar cod at week 0, 2 and 4 of exposure and following 2 weeks of depuration. EROD increased significantly and dose-dependently in both tissues through both exposure routes. Levels were very low in gills compared to liver reflecting the tissue-specific metabolism capacities and tissue-specific response kinetics were also observed. Furthermore, a significant increase of gill EROD was shown in dietary exposed fish, demonstrating a substantial transport of PAHs via the systemic circulation. To conclude, this study gave some preliminary information on the EROD response in terms of levels, dose dependency and timing, in gills of PAH exposed polar cod.