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Main Title Acute Toxicity and Bioconcentration of Endosulfan-Exposed Estuarine Animals.
Author Schimmel, S. C. ; Patrick, Jr., J. M. ; Wilson., A. J. ;
CORP Author Environmental Research Lab., Gulf Breeze, Fla.
Year Published 1977
Report Number EPA/600/J-77/072;
Stock Number PB-277 178
Additional Subjects Toxicity ; Insecticides ; Shrimps ; Fishes ; Pesticides ; Chlorine organic compounds ; Exposure ; Toxicology ; Lethal dosage ; Concentration(Composition) ; Estuaries ; Experimental data ; Tissues(Biology) ; Water analysis ; Tables(Data) ; Temperature ; Salinity ; Water pollution ; Aquatic animals ; Bioassay ; Toxic substances ; Bioaccumulation ; Water pollution effects(Animals) ; Endosulfan ; Reprints ; Penaeus duorarum ; Palaemonetes pugio ; Lagodon rhomboides ; Leiostomus xanthurus ; Mugil cephalus ; Metabolites ; Pesticide residues
Library Call Number Additional Info Location Last
NTIS  PB-277 178 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13p
Acute (96-h) flow-through toxicity tests with endosulfan (Thiodan) were conducted with several estuarine animals. The test species and their 96-h lethal concentration for 50 percent of the organisms (LC50) values were: pink shrimp (Penaeus duorarum), 0.04 micrograms/litre; grass shrimp (Palaemonetes pugio), 1.3 micrograms/litre; pinfish (Lagodon rhomboides), 0.3 micrograms/litre; spot (Leiostomus xanthurus), 0.09 micrograms/litre; and striped mullet (Mugil cephalus), 0.38 micrograms/litre. In a 56-day bioconcentration study (28-day uptake, 28-day depuration), striped mullet were exposed to 0.008 and 0.08 micrograms endosulfan/litre seawater. The two endosulfan isomers (endosulfan I and II) were rapidly metabolized to endosulfan sulfate; only trace amounts of each isomer were detected in edible tissue or offal of mullet exposed to 0.08 micrograms/litre (0.035 micrograms/litre measured) for 28 days. Maximum bioconcentration factors of endosulfan were 2249 in edible tissue and 2755 in whole-body analyses. After 48 h in pesticide-free seawater, endosulfan was not detected in the previously exposed mullet. The authors studies suggest that endosulfan in the estuarine environment would be a hazard because of its acute toxicity and bioconcentration potential, but animals surviving exposure and moving to areas free of endosulfan would lose the chemical rapidly. (Copyright (c) American Society for Testing and Materials, 1977.)