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Main Title Comparison of Laboratory Toxicity Test Results with Responses of Estuarine Animals Exposed to Fenthion in the Field.
Author Clark, J. R. ; Borthwick, P. W. ; Goodman, L. R. ; Patrick, J. M. ; Lores, E. M. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL.
Year Published 1987
Report Number EPA/600/J-87/063;
Stock Number PB87-213237
Additional Subjects Water pollution ; Insecticides ; Toxicity ; Estuaries ; Marine biology ; Aquatic animals ; Exposure ; Field tests ; Laboratory animals ; Contaminants ; Reprints ; Fenthion ; Water pollution effects(Animals) ; Ecosystems
Library Call Number Additional Info Location Last
NTIS  PB87-213237 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 12p
Acute, lethal effects of fenthion (an organophosphate insecticide) on mysids (Mysidopsis bahia), grass shrimp (Palaemonetes pugio), pink shrimp (Penaeus duorarum), and sheepshead minnows (Cyprinodon variegatus) were determined in laboratory tests and after field applications. Exposures at four field sites ranged from short-term exposures ( < or = 12 h) of rapidly decreasing fenthion concentrations to extended intervals (> 72 h) with slowly increasing or decreasing fenthion concentrations. Laboratory-derived LC50s provided a reliable benchmark for predicting acute, lethal effects of fenthion on caged animals in the field when exposures persisted for 24 h or more but overestimated the toxicity for exposures <24 h. Laboratory pulse-exposure tests with rapidly changing concentrations for 12 h were predictive of nonlethal and lethal effects observed for short-term field exposures.