||A rapid assessment of the toxicity of three chlorinated cyclodiene insecticide intermediates to fathead minnows /
Spehar, Robert L. ;
Veith, Gilman D. ;
DeFoe, David L. ;
Bergstedt., Barbara A. ;
||Environmental Research Lab.-Duluth, Minn.
|| Environmental Research Laboratory-Duluth, Office of Research and Development, U.S. Environmental Protection Agency,
||PB-272 655; EPA 600/3-77-099
Fishes--Effect of water pollution on. ;
Organochlorine compounds--Physiological effect. ;
Statistical analysis ;
Fresh water fishes ;
Chlorine organic compounds ;
Lethal dosage ;
Experimental data ;
Fathead minnows ;
Pimephales promelas ;
Water pollution effects(Animals) ;
Maximum permissible exposure level
||Region 3 Library/Philadelphia, PA
||OCSPP Chemical Library/Washington,DC
||NHEERL/GED Library/Gulf Breeze,FL
||Region 10 Library/Seattle,WA
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||viii, 22 pages : illustrations ; 28 cm.
A rapid assessment study to determine the toxicity and bioaccumulation of three chlorinated cyclodiene insecticide intermediates; hexachlorocyclopentadiene, hexachloronorbornadiene, and heptachloronorbornene to fathead minnow larvae and early juveniles was conducted for 30 days under flow-through conditions. A concentration of 7.3 micrograms/liter of hexachlorocyclopentadiene caused significant decreases in survival after 4 days. Growth of fish exposed for 30 days was not significantly decreased at any of the concentrations tested. The highest concentration of hexachlorocyclopentadiene having no adverse effect was 3.7 micrograms/liter. Concentrations of 122 and 226 micrograms/liter of hexachloronorbornadiene caused significant decreases in survival after 4 days. Growth of 30 day-old larvae was significantly decreased at 38.4 micrograms/liter and was the most sensitive indicator of toxicity. Survival of fathead minnows exposed to heptachloronorbornene was significantly decreased at 83.5 micrograms/liter after 4 days. The highest concentration having no adverse effect was 25.9 micrograms/liter. The average bioconcentration factor for fish exposed to less than 40 micrograms/liter of this compound in water was 11,200.
Includes bibliographical references.