Record Display for the EPA National Library Catalog

RECORD NUMBER: 22 OF 138

OLS Field Name OLS Field Data
Main Title Biological Effects of Pesticides on the Dungeness Crab.
Author Caldwell., Richard S. ;
CORP Author Oregon State Univ., Newport. Marine Science Center.;Environmental Research Lab., Gulf Breeze, Fla.
Year Published 1977
Report Number EPA-68-01-0188; EPA/600/3-77/131;
Stock Number PB-276 978
Additional Subjects Pesticides ; Hazardous materials ; Crabs ; Aquatic animals ; Invertebrates ; Toxicity ; Insecticides ; Concentration(Composition) ; Standards ; Exposure ; Bioassay ; Crustacea ; Fungicides ; Chlorine organic compounds ; Herbicides ; Fluorine organic compounds ; Sulfur organic compounds ; Phosphorus organic compounds ; Maximum permissible exposure level ; Biological effects ; Dungeness crabs ; Cancer magister ; Toxic substances ; Carbofuran ; D 2-4 herbicides ; Chlordan ; Threshold limit values ; Methoxychlor ; Malathion ; Captan ; Propionanilide/dichloro ; Toluidene/trifluoro-dinitro-dipropylm ; Phosphorotrithioate/tributyl
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-276 978 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 143p
Abstract
The toxicity of nine pesticides to various life history stages of the Dungeness crab, Cancer magister, was examined to establish the most sensitive life stage of the crab, and the highest concentration of each pesticide having no discernible effect on that most sensitive stage during prolonged exposures. The compounds tested were the insecticides carbofuran, chlordane, malathion and methoxychlor; the herbicides 2,4-D, DEF, propanil and trifluralin; and the fungicide captan. For each pesticide the zoeal stages were found to be the most sensitive in long-term tests, approximately 5 to 10 times and 10 to 100 times more sensitive than juvenile and adult crabs, respectively, and were also affected at lower concentrations than those that affected egg hatching and prezoeal development. The maximum acceptable toxicant concentrations for continuous exposures of C. magister zoeae to each of the nine pesticides are: methoxychlor, 0.005 microgram/liter; chlordane, 0.015 microgram/liter; malathion, 0.02 microgram/liter; carbofuran, 0.05 microgram/liter; captan, 2 micrograms/liter; DEF, 4 micrograms/liter; trifluralin, 15 micrograms/liter; propanil, 80 micrograms/liter; and 2,4-D 1000 micrograms/liter. The toxicity of each of these pesticides to crabs is compared with literature reports of their toxicity to other aquatic species.