Record Display for the EPA National Library Catalog


Main Title Interaction of Chemical Pollutants and Virus in a Crustacean: A Novel Bioassay System.
Author Couch, John A. ; Courtney, Lee ;
CORP Author Environmental Protection Agency, Gulf Breeze, FL. Gulf Breeze Environmental Research Lab.
Year Published 1977
Report Number EPA/600/J-77/140 ;GULF BREEZE CONTRIB-300;
Stock Number PB-290 036
Additional Subjects Shrimps ; Viruses ; Toxicology ; Interactions ; Crustacea ; Bioassay ; Exposure ; Experimental data ; Tolerances(Physiology) ; Concentration(Composition) ; Chlorine organic compounds ; Reprints ; Aroclor 1254 ; Water pollution effects(Animals) ; Toxic substances ; Infections ; Baculoviruses ; Biphenyl/chloro ; Insect viruses ; Host pathogen relations
Library Call Number Additional Info Location Last
NTIS  PB-290 036 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 11p
Pathogen-host interactions were investigated with a simple 'host-pathogen-interaction' system, using as tentative criteria of interaction: increase in viral prevalence, increase in infection intensity, increase in mortality, and enhanced cyptopathic effects in exposed-infected shrimp as compared to control-infected shrimp. A large group of shrimp, 23.3 percent of which had light patent Baculovirus infections, was divided equally into two groups. One group was exposed to the chemical stressor Aroclor 1254 at 0.7 parts per billion for 35 days in flowing seawater. The other group was maintained as control in flowing seawater. Viral prevalence in exposed shrimp samples increased with time at a significantly greater rate than in control shrimp. Viral prevalence in Aroclor-exposed shrimp survivors was 75 percent after 35 days, whereas only 45.7 percent of control shrimp had patent viral infections. This finding suggests an interaction among the chemical stressor (Aroclor 1254), host, and virus. Nature or mechanism of the interaction has not been defined, but the shrimp-virus system shows promise for future bioassays to determine influence of low concentrations of pollutants on natural pathogen-host interactions.