Oil Shale Processing as a Source of Aquatic Pollution: Monotoring of the Biologic Effects in Caged and Feral Freshwater fish

摘要

The biologic effects of the oil shale industry on caged rainbow trout (Oncorhynchu mykiss) as well as on feral perch (Perca flucviatilis) and roach (Rutilus rrutilus) were studied in te river Narva in northeast Estonia. The River Narva passes the oil shale mining and processing area and thus receives elevated amounts of polycycli aromatic hydrocarbons (PAHs), heavy metals, and sulfates. The effects of the chemical load were conitored by measuring cytochrome P4501A (CYP1A)-dependent monooxygenase (MO) activities [7-ethoxyresorufin O-deethylase and aryl hydrocarbon hydroxylase (AHH)]as well as conjugation enzyme activities [glutathione S-transferase (GST) and UDP-glu- curonosyltransferase] in the liver of fish.