||Differential Toxicity and Uptake of Two Fenvalerate Formulations in Fathead Minnows, 'Pimephales promelas'.
Bradbury, S. P. ;
Coats, J. R. ;
McKim, J. M. ;
||Iowa State Univ., Ames.;Environmental Research Lab.-Duluth, MN.
Water pollution ;
Emulsifying agents ;
Pimephales promelas ;
Fathead minnows ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||The influence of the commercial emulsifier on the acute toxicity and uptake of fenvalerate ((R,S)-a-cyano-3-phenoxybenzyl(R,S)-2-(4-chlorophenyl)-3-methylbutyrate), a synthetic pyrethroid insecticide, by fathead minnows (Pimephales promelas) was examined. Flow-through acute toxicity testing with measured concentrations of technical-grade fenvalerate and a 30% active ingredient emulsifiable concentrate (EC) of the insecticide was conducted. Steady-state LC50 values were reached by 72 and 120 to 168 h, respectively, in tests with technical-grade and EC formulations of this insecticide. Initially, technical-grade fenvalerate was more toxic; the 96-h LC50s for technical-grade fenvalerate and the EC were 0.69 and 0.99 micrograms/l, respectively. By 168 h, an LC50 of 0.75 micrograms/l was determined for the EC, indicating that the incipient lethalities of the two formulations were similar. (Copyright (c) 1985 SETAC.)
||Sponsored by Environmental Research Lab.-Duluth, MN.
||Pub. in Environmental Toxicology and Chemistry, v4 p533-541 1985.
|NTIS Title Notes
||Reprint: Differential Toxicity and Uptake of Two Fenvalerate Formulations in Fathead Minnows, 'Pimephales promelas'.
|PUB Date Free Form
||6C; 6T; 6F; 68D; 57
||Not available NTIS