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

Artikel i vetenskaplig tidskrift
Författare Joachim Sturve
L. Balk
B. Liewenborg
M. Adolfsson-Erici
Lars Förlin
Bethanie Carney Almroth
Publicerad i Environmental Science and Pollution Research
Volym 21
Nummer/häfte 24
Sidor 13758-13768
ISSN 0944-1344
Publiceringsår 2014
Publicerad vid Institutionen för biologi och miljövetenskap
Sidor 13758-13768
Språk en
Länkar dx.doi.org/10.1007/s11356-014-2890-...
Ämnesord 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
Ämneskategorier Miljövetenskap

Sammanfattning

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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