Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Toxicity and Bioconcentration of EPN and Leptophos to Selected Estuarine Animals.
Author Schimmel, Steven C. ; Hamaker, Timothy L. ; Forester, Jerrold ;
CORP Author Environmental Research Lab., Gulf Breeze, FL.
Year Published 1979
Report Number EPA-600/J-79-086 ;CONTRIB-354;
Stock Number PB80-196017
Additional Subjects Toxicology ; Pesticides ; Insecticides ; Phosphorus organic compounds ; Life cycles ; Lethal dosage ; Bioassay ; Concentration(Composition) ; Aquatic animals ; Exposure ; Mortality ; Estuaries ; Water pollution ; Reprints ; Toxic substances ; Mysidopsis bahia ; Penaeus duorarum ; Cyprinodon variegatus ; Lagodon rhomboides ; Leiostimus xanthurus ; Water pollution effects(Animals) ; EPN insecticide ; Phosvel ; Phosphonothioic acid/(ethyl-(nitrophenyl-ester))-phenyl ; Phosphonothioic acid/(bromo-dichlorophenyl-ester)-(methyl-ester)-phenyl
Library Call Number Additional Info Location Last
NTIS  PB80-196017 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 13p
Acute (96-hr) flow-through toxicity tests, chronic (entire life-cycle) tests, and bioconcentration studies were conducted on selected estuarine animals with the insecticides, EPN, and leptophos. In the EPN acute toxicity tests, the test animals and their 96-hr LC50 values were: Mysidopsis bahia, 3.44 micrograms/l; Penaeus duorarum, 0.29 micrograms/l; Cyprinodon variegatus, 188.9 micrograms/l; Lagodon rhomboides, 18.3 micrograms/l; and Leiostimus xanthurus, 25.6 micrograms/l. Test animals and 96-h LC-50 values for leptophos were M. bahia, 3.16 micrograms/l; P. duorarum, 1.88 micrograms/l; and L. xanthurus, 4.06 micrograms/l. In separate chronic tests, M. bahia were exposed to EPN and leptophos. Significant (alpha = 0.05) mortality and fewer young were produced in 4.13 micrograms/l EPN. In the leptophos chronic test, significant mortality occurred in concentrations > or = 3.63 micrograms/l and fewer young were produced in concentrations > or = 1.77 micrograms/l. L. rhomboides, exposed to EPN in a 26-day uptake study, bioconcentrated the insecticide 707 X that measured in the exposed water. The results indicate that if either contaminated an estuarine environment in concentrations > or = 1.0 micrograms/l, the most profound adverse effects on crustaceans and possibly fishes would result from acute toxicity, rather than from chronic toxicity or bioconcentration of the chemicals.