Record Display for the EPA National Library Catalog
RECORD NUMBER: 32 OF 63
|OLS Field Name||OLS Field Data|
|Main Title||Insecticide Effects on Normal Development and Hatch of Embryos of 'Paratanytarsus parthenogeneticus' (Diptera: Chironomidae).|
|Author||Anderson, R. L. ; Shubat, P. ;|
|CORP Author||Environmental Research Lab.-Duluth, MN. ;Wisconsin Univ.-Superior. Center for Lake Superior Environmental Studies.|
|Additional Subjects||Insecticides ; Invertebrates ; Pesticides ; Diptera ; Embryos ; Exposure ; Lethal dosage ; Paratanytarsus parthenogeneticus ; Chironomidae ; Water pollution effects(Animals)|
Simple, low cost methods are needed to determine the effect of pesticides on non-target aquatic organisms. In this report, embryos of Paratanytarsus parthenogeneticus were exposed from deposition to hatch to five pesticides. Four of the five pesticides affected development or hatch only at coccentrations which exceeded 96-h LC50 values of other non-target invertebrates. One pesticide, fenitrothion, affected hatch at 13 micrograms/1 which is similar to 96-h LC50 values for other aquatic invertebrates. Because of the low sensitivity of the embryo to pesticides, this method may not be a useful pesticide screening test for non-target invertebrates.