Contaminant accumulation and biological responses in Atlantic cod (Gadus morhua) caged at a capped waste disposal site in Kollevåg, Western Norway

Marine Environmental Research
Karina DaleAnders Goksøyr

Abstract

The aim of this study was to assess whether fish in Kollevåg, a sheltered bay on the western coast of Norway, previously utilized as a waste disposal site, could be affected by environmental contaminants leaking from the waste. Farmed, juvenile Atlantic cod (Gadus morhua) were caged for six weeks at three different locations in Kollevåg bay and at one reference location. Sediments and cod samples (bile and liver) were analyzed for polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), brominated flame retardants (BFRs), per-and polyfluoroalkyl substances (PFASs) and polycyclic aromatic hydrocarbon (PAH) metabolites, revealing a contamination gradient at the four stations. Furthermore, hepatosomatic index (HSI) and Fulton's condition factor (CF) were significantly lower in cod caged closest to the disposal site. Levels and activities of biomarker proteins, such as vitellogenin (Vtg), metallothionein (Mt), and biotransformation and oxidative stress enzymes, including cytochrome P450 1a and 3a (Cyp1a, Cyp3a), glutathione s-transferase (Gst) and catalase (Cat), were quantified in blood plasma and liver tissue. Hepatic Cat and Gst activities were significantly reduced in cod caged at the innermost stations in Kollevåg, ...Continue Reading

Citations

Dec 17, 2020·Frontiers in Molecular Biosciences·Eileen Marie HannaInge Jonassen
Dec 20, 2019·Environmental Science & Technology·Libe Aranguren-AbadíaOdd André Karlsen
Oct 6, 2021·The Science of the Total Environment·Libe Aranguren-AbadíaOdd André Karlsen
Nov 9, 2020·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Yongzhan MaiZini Lai

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