Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Bromacil and Diuron Herbicides: Toxicity, Uptake, and Elimination in Freshwater Fish.
CORP Author Wisconsin Univ.-Superior. Center for Lake Superior Environmental Studies.;Environmental Research Lab.-Duluth, MN.
Year Published 1987
Report Number EPA-R-806196-01 ;EPA-R-880020-01; EPA/600/J-87/301;
Stock Number PB88-186820
Additional Subjects Herbicides ; Toxicity ; Minnows ; Trout ; Water pollution ; Exposure ; Survival ; Life cycles ; Tissues(Biology) ; Chlorine organic compounds ; Anilines ; Metabolism ; Reprints ; Pimephales promelas ; Salmo gairdneri ; Diuron ; Bromacil ; LC50
Library Call Number Additional Info Location Last
NTIS  PB88-186820 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 09/04/1988
Collation 9p
LC50 values for 30-day old fathead minnows (Pimephales promelas) exposed to bromacil were 185, 183, 182, and 167 mg/l at 24, 48, 96, and 168 hr, respectively; and for exposure to diuron were 23.3, 19.9, 14.2, and 7.7 mg/l at 24, 48, 96, and 192 hr, respectively. In early life-stage exposures, it was not possible to determine a 'no effect' concentration for bromacil, as growth was reduced at the lowest exposure of 1.0 mg/l. The 'no effect' concentration for diuron was 33.4 micrograms/L following a 64-day exposure, while a concentration of 78.0 micrograms/l adversely affected fry in their appearance and survival. It also affected the survival of juvenile fish. Neither herbicide accumulated significantly in fish tissue. Rainbow trout (Salmo gairdneri) injected with radiolabeled bromacil or diuron eliminated over 90% of the radioactivity within 24 hr. Metabolites of diuron included 3,4-dichloroaniline and several demethylated products. (Copyright (c) 1987 Springer-Verlag New York Inc.)