PMID: 2509193Oct 1, 1989Paper

Biotransformation and other physiological responses in whitefish caged in a lake receiving pulp and paper mill effluents

Ecotoxicology and Environmental Safety
P Lindström-Seppä, A Oikari

Abstract

Hepatic monooxygenase (MO) and conjugation enzyme activities, metabolites of chlorinated phenolics in the bile, and blood ionoregulatory parameters were studied in juvenile whitefish (Coregonus muksun Pallas and C. muksun X Coregonus peled Gmelin hybrid) held in cages downstream from a mill producing chlorine-bleached kraft pulp and printing paper. MO activities, measured as benzo[a]pyrene hydroxylase, 7-ethoxycoumarin O-deethylase, and 7-ethoxyresorufin O-deethylase, were significantly induced in whitefish caged about 5 km from the effluent outlet. The highest mean increase detected was 17 times the control value. In the nearest caging station (3 km) the induction was lower, indicating inhibition or toxicity caused by the effluent. The levels of bile metabolites of chlorinated phenolics showed highest concentrations at the nearest station and decreased levels at more distant locations over the whole water area studied (15 km). Bile metabolites in whitefish exposed in control areas confirmed low-level background pollution of the lake system due to chlorinated phenolics. Observations on blood ionic concentrations suggest that whitefish were able to regulate their hydromineral balance despite the environmental pollution affecting...Continue Reading

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Citations

Jan 1, 1991·Comparative Biochemistry and Physiology. C, Comparative Pharmacology and Toxicology·L ViganóS Galassi
Mar 26, 2004·Ecotoxicology and Environmental Safety·María S SepúlvedaTimothy S Gross
May 26, 2004·Ecotoxicology and Environmental Safety·V L MariaM A Santos
May 11, 2005·Ecotoxicology and Environmental Safety·C GravatoM A Santos
Feb 1, 2003·Environmental Toxicology and Pharmacology·Ron van der OostNico P E Vermeulen
Aug 24, 2000·Critical Reviews in Toxicology·J J WhyteD E Tillitt
Jan 1, 1996·Biomarkers : Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals·B K Gadagbui, A Goksrøyr
Aug 1, 1992·Ecotoxicology and Environmental Safety·M Pesonen, T Andersson
Jun 17, 1998·Ecotoxicology and Environmental Safety·H FenetJ Bontoux
Jun 1, 2000·Ecotoxicology and Environmental Safety·G Ericson, A Larsson
Dec 17, 2002·Ecotoxicology and Environmental Safety·C Gravato, M A Santos

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