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Main Title The use of grass shrimp (palaemonetes pugio) larvae in field bioassys of the effects of agricultural runoff into estuarys. /
Author Kirby-Smith, W. W. ; Thompson, S. P. ; Forward., R. B.
CORP Author Duke Univ., Beaufort, NC. Marine Lab.;Environmental Research Lab., Gulf Breeze, FL.
Publisher US Environmental Protection Agency, Environmental Research Laboratory,
Year Published 1991
Report Number EPA/600/D-91/117
Stock Number PB91-199869
Subjects Agricultural pollution ; Grass shrimp ; Agricultural runoff
Additional Subjects Carbamate insecticides ; Water pollution effects(Animals) ; Shrimp ; Larvae ; Estuaries ; Agriculture ; Mortality ; Reprints ; Palaemonetes pugio ; Run-off water ; Permethrin ; Thiodicarb
Library Call Number Additional Info Location Last
NTIS  PB91-199869 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10 pages : illustrations ; 28 cm
Investigations of the effects of runoff from pesticide sprayed fields on survivorship of the larvae of the grass shrimp Palaemonetes pugio are described. Gravid shrimp were held in cages in the surface waters of two estuarine creeks; one creek received runoff from fields sprayed with the pesticides permethrin and thiodicarb while the other creek received runoff from an unsprayed forested area. Larvae released from field-exposed shrimp were reared in the laboratory in runoff water from the farm, from forest drainage, and in control water. Permethrin was undetectable (< 1 ng/sample) in all water except in one replicate of farm runoff. Survivorship was high (75-94%) in all treatments except for larvae reared in farm runoff water (27-35%). In a second experiment three weeks after pesticide application, survivorship was high (94-98%) in all treatments. The study concludes that runoff from agricultural fields sprayed with pesticides applied in accordance with labeled instructions can significantly reduce survivorship of larval grass shrimp, although cause of mortality is unknown.
"EPA 600/D-91/117." Microfiche.