The Arctic is no longer put on ice: Evaluation of Polar cod (Boreogadus saida) as a monitoring species of oil pollution in cold waters

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• 作者：Henrik Jonsson ; Rolf C. Sundt ; Endre Aas ; Steinar Sanni
• 关键词：Polar cod ; Arctic ; Oil pollution ; Climate change ; Monitoring ; Biomarker
• 刊名：Marine Pollution Bulletin
• 出版年：2010
• 出版时间：March 2010
• 年：2010
• 卷：60
• 期：3
• 页码：390-395
• 全文大小：302 K

文摘

The withdrawing Arctic ice edge will facilitate future sea transport and exploration activities in the area, which calls for the establishment of relevant cold water monitoring species. The present study presents first results of field baseline levels for core oil pollution biomarkers in Polar cod (Boreogadus saida) sampled from pristine, Arctic waters. Furthermore, biomarker response levels were characterized in controlled laboratory exposure experiments running over 2 weeks. Fish exposed to a simulated petrogenic spill (1 ppm dispersed, crude oil) exhibited elevated hepatic EROD activity, bile PAH-metabolites, and hepatic DNA-adducts, whereas male individuals exposed to simulated produced water (30 ppb nonylphenol) exhibited a strong induction of plasma vitellogenin. In conclusion, the results demonstrated low and robust biomarker baseline levels that were clearly different from exposure responses. In combination with its high abundance and circumpolar distribution, the Polar cod seems well qualified for oil pollution monitoring in Arctic waters.