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RECORD NUMBER: 155 OF 169

OLS Field Name OLS Field Data
Main Title Toxicity of Flucythrinate to Gammarus lacustris (Amphipoda), Pteronarcys dorsata (Plecoptera) and Brachycentrus americanus (Trichoptera): Importance of Exposure Duration.
Author Anderson, R. L. ; Shubat, P. ;
CORP Author Environmental Research Lab.-Duluth, MN. ;Wisconsin Univ.-Superior. Center for Lake Superior Environmental Studies.
Year Published 1984
Report Number EPA/600/J-84/103;
Stock Number PB85-104933
Additional Subjects Toxicity ; Hazardous materials ; Environmental surveys ; Water pollution ; Pesticides ; Exposure ; Mortality ; Concentration(Composition) ; Laboratory animals ; Bioassays ; Sampling ; Reprints ; Water pollution effects(Animals)
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB85-104933 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 15p
Abstract
The effect of the synthetic pyrethroid flucythrinate on three non-target invertebrates was evaluated using continual and short-time exposure methods. Both methods show toxic action at measured concentrations 0.100 micrograms/litre. The use of both approaches pointed toward the importance of exposure time in hazard assessment. Exposures for a short time followed by an extended observation period in insecticide-free water show that a lethal exposure can occur in less time than estimated from continually exposed animals. For example, continually exposed Gammarus lacustris had a 72 h LC50 of 0.12 micrograms/litre. However, exposure for only 17.6 h at 0.12 micrograms/litre will kill 50% of the exposed animals during an extended observation time. The use of both approaches can also provide insights into minimum exposure times for each test concentration, and the possibility of post-exposure mortality.