Flow-Through and static acute test comparisons with fathead minnows and acute tests with an amphipod and a cladoceran

Abstract

The Center for Lake Superior Environmental Studies of the University of Wisconsin-Superior, Superior, Wisconsin 54880 has completed acute toxicity test with eighteen organic compounds. Fathead minnows, Pimephales promelas, (30+/-5 days old} were exposed to all compounds in flow-through and static exposures with· measured chemical concentrations.· An amphipod, Gammarus pseudolimnaeus, (adults) were simultaneously exposed with fathead minnows in flow-throuih exposures to eight of the chemicals. The cladoceran, Daphnia magna, (<24 hr old} were exposed to two chemicals in 48-hr exposures.