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Effects of an oil spill in a harbor assessed using biomarkers of exposure in eelpout

Journal article
Authors Joachim Sturve
L. Balk
B. Liewenborg
M. Adolfsson-Erici
Lars Förlin
Bethanie Carney Almroth
Published in Environmental Science and Pollution Research
Volume 21
Issue 24
Pages 13758-13768
ISSN 0944-1344
Publication year 2014
Published at Department of Biological and Environmental Sciences
Pages 13758-13768
Language en
Links dx.doi.org/10.1007/s11356-014-2890-...
Keywords Oil spill, Polycyclic aromatic hydrocarbons, Eelpout, Biomarkers, EROD, DNA adducts, PIKE ESOX-LUCIUS, AROMATIC-HYDROCARBONS PAHS, DNA ADDUCT FORMATION, ZOARCES-VIVIPARUS, GOTEBORG HARBOR, RISK-ASSESSMENT, RAINBOW-TROUT, DOSE-RESPONSE, ATLANTIC COD, BALTIC SEA
Subject categories Environmental Sciences

Abstract

Oil spills occur commonly, and chemical compounds originating from oil spills are widespread in the aquatic environment. In order to monitor effects of a bunker oil spill on the aquatic environment, biomarker responses were measured in eelpout (Zoarces viviparus) sampled along a gradient in Goteborg harbor where the oil spill occurred and at a reference site, 2 weeks after the oil spill. Eelpout were also exposed to the bunker oil in a laboratory study to validate field data. The results show that eelpout from the Goteborg harbor are influenced by contaminants, especially polycyclic aromatic hydrocarbons (PAHs), also during "normal" conditions. The bunker oil spill strongly enhanced the biomarker responses. Results show elevated ethoxyresorufin-O-deethylase (EROD) activities in all exposed sites, but, closest to the oil spill, the EROD activity was partly inhibited, possibly by PAHs. Elevated DNA adduct levels were also observed after the bunker oil spill. Chemical analyses of bile revealed high concentrations of PAH metabolites in the eelpout exposed to the oil, and the same PAH metabolite profile was evident both in eelpout sampled in the harbor and in the eelpout exposed to the bunker oil in the laboratory study.

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