Toxicity of uranium mine-receiving waters to caged fathead minnows, Pimephales promelas.
Ecotoxicol Environ Saf
; 48(2): 202-14, 2001 Feb.
Article
en En
| MEDLINE
| ID: mdl-11161696
Larval fathead minnows (Pimephales promelas) were placed at four exposure sites for 7 days in each of five lakes surrounding the Key Lake uranium mine in northern Saskatchewan, Canada. Fish placed in lakes receiving Mo-contaminated mill effluent demonstrated higher mortalities than those placed in lakes receiving Ni-contaminated mine-dewatering effluent, which was not significantly different from reference sites. No significant differences were detected in fish growth among the study lakes because of the high (90%) mortality in Fox and Unknown lakes. Principal components analysis characterized exposure sites by total and dissolved metal concentration. Stepwise multiple regression of fish mortality on principal components generated from total metal data revealed that principal component 1 could account for 84% of the variance associated with fish mortality. Careful examination of the metals that correlated strongly with principal component 1 and with fish mortality suggested that dietary Se toxicity probably resulted in the differential fathead minnow mortality observed among study lakes.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Contaminantes Químicos del Agua
/
Cyprinidae
/
Uranio
/
Minería
Tipo de estudio:
Diagnostic_studies
Límite:
Animals
Idioma:
En
Revista:
Ecotoxicol Environ Saf
Año:
2001
Tipo del documento:
Article
País de afiliación:
Canadá
Pais de publicación:
Países Bajos