Report of the flow-through and static acute test comparisons with fathead minnows and acute test 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 tests 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-through expo­sures to eight of the chemicals. The cladoceran, Daphnia magna, (<24 hr old) were exposed to two chemicals in 48-hr exposures.