Observations of bluegills fed selenium-contaminated Hexagenia nymphs collected from Belews Lake, North Carolina

Elevated selenium concentrations in Belews lake, NC, are attributed to discharges from a coal ash settling pond. A study was conducted to document the occurrence of Se toxicity in bluegills fed to satiation on a diet consisting of a common benthic food organism found in the lake. Fish were fed Se-co...

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Bibliographic Details
Published in:Bulletin of environmental contamination and toxicology 1985-12, Vol.35 (6), p.816-825
Main Author: FINLEY, K. A
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Animals
Applied ecology
Behavior, Animal - drug effects
Biological and medical sciences
Diet
Ecotoxicology, biological effects of pollution
Erythrocytes - drug effects
Fishes - physiology
Fresh water environment
Fundamental and applied biological sciences. Psychology
Gills - pathology
Insecta - metabolism
Kidney - pathology
Larva
Liver - pathology
Neutron Activation Analysis
North Carolina
Selenium - metabolism
Selenium - toxicity
Water Pollutants - toxicity
Water Pollutants, Chemical - toxicity
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Summary:Elevated selenium concentrations in Belews lake, NC, are attributed to discharges from a coal ash settling pond. A study was conducted to document the occurrence of Se toxicity in bluegills fed to satiation on a diet consisting of a common benthic food organism found in the lake. Fish were fed Se-contaminated mayfly nymphs. Three of the four bluegills provided the 13.6 MG se/g mayfly diet died within the 44-day exposure period. Gross physiological and behavioral indications of selenosis became evident in these fish. See concentrations in organs and muscles were correlated with dietary intake of the metal.
ISSN:0007-4861
1432-0800
DOI:10.1007/BF01636593