Record Display for the EPA National Library Catalog
RECORD NUMBER: 37 OF 2349Main Title | Acute and Chronic Parathion Toxicity to Fish and Invertebrates. | |||||||||||
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Author | Spacie., Anne ; | |||||||||||
CORP Author | National Water Quality Lab., Duluth, Minn.;Environmental Protection Agency, Washington, D.C. Office of Research and Monitoring. | |||||||||||
Year Published | 1976 | |||||||||||
Report Number | EPA-68-01-0155; EPA-18050-HQG; | |||||||||||
Stock Number | PB-257 800 | |||||||||||
Additional Subjects | Toxicity ; Fishes ; Invertebrates ; Insecticides ; Toxicology ; Phosphorus organic compounds ; Pesticides ; Aquatic biology ; Biodeterioration ; Water pollution ; Nervous system ; Bioassay ; Dosage ; Lethal dosage ; Acetylcholinesterase ; Parathion ; Pesticide residues ; Water pollution effects(Animals) ; Appendices | |||||||||||
Holdings |
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Collation | 109p | |||||||||||
Abstract | The research demonstrates that parathion is highly toxic to aquatic species, may accumulate in tissues, and may persist long enough to cause chronic damage. To find ecologically 'safe' levels allowable in aquatic systems, the long-term effects of parathion must be studied further. The objective of the present study was to find the greatest chronic levels of parathion that produce no harmful effects to brook trout, bluegills, fathead minnows, Daphnia magna, Gammarus fasciatus, and Chrionomus tentans. For each species, the maximum acceptable toxicant concentration (MATC), defined by Mount and Stephan, was then related to the acute LC50. Because standardized bioassay techniques were used, the results of these tests may be correlated with those for other species and compounds. |