Record Display for the EPA National Library Catalog


Main Title New Early Life-Stage Toxicity Test Using the California Grunion (Leuresthes tenuis) and Results with Chlorpyrifos.
Author Goodman, L. R. ; Hansen, D. J. ; Cripe, G. M. ; Middaugh, D. P. ; Moore, J. C. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL.
Year Published 1985
Report Number EPA/600/J-85/186;
Stock Number PB86-120540
Additional Subjects Insecticides ; Toxicity ; Marine fishes ; Water pollution ; Exposure ; Embryos ; Tests ; Salinity ; Temperature ; Chlorine organic compounds ; Organic phosphates ; Reprints ; Leuresthes tenuis ; California grunion ; Chloropyrifos ; Phosphorothiates(Diethyl-trichloro-pyridyl)
Library Call Number Additional Info Location Last
NTIS  PB86-120540 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 11p
California grunion were continuously exposed as embryos and fry to technical chlorpyrifos in two toxicity tests conducted in the same exposure apparatus. The first test, a 35-day early life-stage (ELS) test, began with approximately 2.5-day-old embryos that were exposed in flow-through aquaria in darkness until hatching was stimulated on day 9 of exposure. The second toxicity test, a fry test, began with newly-hatched fry and lasted 26 days. Test water temperature ranged from 23 to 26C and salinity from 24.5 to 34 dissolved solids in sea water parts per thousand by weight. Results of the two tests were similar, indicating that exposure of embryos added little to the overall toxicity of chlorpyrifos to grunions. Percentage hatch of embryos was unaffected by the chlorpyrifos concentrations tested.