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RECORD NUMBER: 86 OF 469

Main Title Comparative Toxicity of Ten Organic Chemicals to Ten Common Aquatic Species.
Author Thurston, R. V. ; Gilfoil, T. A. ; Meyn, E. L. ; Zajdel, R. K. ; Aoki, T. I. ;
CORP Author Montana State Univ., Bozeman. Fisheries Bioassay Lab.;Environmental Research Lab.-Duluth, MN.
Year Published 1985
Report Number EPA-R-807240 ;EPA-R-809478; EPA/600/J-85/188;
Stock Number PB86-117249
Additional Subjects Toxicity ; Organic compounds ; Aquatic animals ; Water pollution ; Tolerances(Physiology) ; Trout ; Minnows ; Mortality ; Concentration(Composition) ; Mathematical models ; Crustacea ; Reprints ;
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NTIS  PB86-117249 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13p
Abstract
The susceptibilities of 10 aquatic organisms to 10 organic chemicals were determined using lethality tests. The species included six fishes, two crustaceans, a chironomid and an amphibian. The chemicals were selected to span the toxicity range from 26 g/1 to 1 microgram/l and include chemicals which were lethal by four modes of toxic action. There was no consistent relative susceptibility among the test species because the sensitivity to specific modes of toxic action varied among the chemicals. Nonetheless, the toxicities of the chemicals to any given species were highly correlated to the toxicities to other species, particularly among fishes. The 96-h median lethal concentration (LC50) of the chemicals to rainbow trout (Salmo gairdneri) could be estimated from the 96-h LC50 with fathead minnows (Pimephales promelas) with a correlation coefficient greater than 0.99. Equations for estimating the lethal concentration of chemicals with each species from the 96-h LC50 for fathead minnows are presented. (Copyright (c) 1985 Pergamon Press Ltd.)