|Simple Test for Toxicity of Number 2 Fuel Oil and Oil Dispersants to Embryos of Grass Shrimp, 'Palaemonetes pugio'.
Fisher, W. S. ;
Foss, S. S. ;
|Environmental Research Lab., Gulf Breeze, FL. Center for Marine and Estuarine Disease Research.
Fuel oils ;
Life cycles ;
|Some EPA libraries have a fiche copy filed under the call number shown.
A simple test, using embryos of the grass shrimp Palaemonetes pugio, was employed to determine the toxicity of two commercial oil dispersants (Corexit 7664 and Corexit 9527) and toxicity of the water soluble fraction of Number 2 fuel oil (WSF oil) prepared with and without the addition of the dispersants. Tests revealed P. pugio embryos were similar to previously measured life stages in their sensitivity to WSF oil prepared without dispersants. They were approximately ten times more sensitive to water soluble fractions of dispersed oil, which may have been due to the approximately ten-fold increases in total hydrocarbons measured analytically. Both temperatures and salinity of the sea water affected toxicity of WSF prepared with dispersants, the most obvious effect being earlier onset of mortalities at higher temperatures. (Copyright (c) 1993 Pergamon Press Ltd.)