Histopathology of rainbow trout exposed to a bleached kraft pulp mill effluent

The toxicity of an untreated bleached kraft pulp mill effluent was evaluated histopathologically, using Salmo gairdneri . Gills, liver, kidney, spleen digestive tract, and skin were examined in a 96-hr LC50 acute test. Fish exposed to lethal concentrations of effluent had an extensive fusion of gill...

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Bibliographic Details
Published in:Archives of environmental contamination and toxicology 1988-05, Vol.17 (3), p.319-323
Main Authors: COUILLARD, C. M, BERMAN, R. A, PANISSET, J. C
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Environmental pollutants toxicology
Freshwater
Industrial Waste
Lethal Dose 50
Medical sciences
Salmonidae - physiology
Toxicology
Trout - physiology
Water
Water Pollutants - toxicity
Water Pollutants, Chemical - toxicity
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Summary:The toxicity of an untreated bleached kraft pulp mill effluent was evaluated histopathologically, using Salmo gairdneri . Gills, liver, kidney, spleen digestive tract, and skin were examined in a 96-hr LC50 acute test. Fish exposed to lethal concentrations of effluent had an extensive fusion of gill lamellae. This lesion was also present in fish that survived the 96-hr LC50 acute test but to a lesser extent. Trout exposed for 20, 40, and 60 days to sublethal effluent concentrations were also examined. No lesions that could be attributed specifically to the effluent were observed, but exposed fish had a higher incidence of fin necrosis and damaged gills than the unexposed fish after 40 and 60 days.
ISSN:0090-4341
1432-0703
DOI:10.1007/BF01055169