IRIS - International Research Institute of Stavanger, P.O. Box 8046, N-4068 Stavanger, Norway.
Mar Pollut Bull. 2010 Mar;60(3):390-5. doi: 10.1016/j.marpolbul.2009.10.014. Epub 2009 Dec 9.
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 (Boreogadussaida) 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 (1ppm dispersed, crude oil) exhibited elevated hepatic EROD activity, bile PAH-metabolites, and hepatic DNA-adducts, whereas male individuals exposed to simulated produced water (30ppb 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.
随着北极海冰边缘的退缩，未来该地区的海上运输和勘探活动将更加便利，因此需要建立相关的冷水监测物种。本研究首次报道了从原始北极水域采集的极地鳕鱼（Boreogadussaida）体内核心石油污染生物标志物的现场基线水平。此外，还在为期两周的对照实验室暴露实验中对生物标志物的响应水平进行了特征描述。暴露于模拟溢油（1ppm 分散原油）的鱼类表现出肝 EROD 活性、胆汁 PAH 代谢物和肝 DNA 加合物升高，而暴露于模拟采出水（30ppb 壬基酚）的雄性个体血浆卵黄蛋白原则表现出强烈诱导。总之，结果表明，生物标志物的基线水平较低且稳定，与暴露反应明显不同。极地鳕鱼由于其丰富的数量和环极分布，似乎非常适合北极水域的石油污染监测。
