Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Thermal Shock Effects on Larvae of Caddis Fly 'Brachycentrus americanus'.
Author Salmela, Jack A. ; Anderson, Richard J. ;
CORP Author Environmental Research Lab.-Duluth, MN.
Year Published 1978
Report Number EPA/600/J-78/087;
Stock Number PB-290 672
Additional Subjects Thermal shock ; Larvae ; Water pollution ; Temperatures ; Behavior ; Bioassay ; Experimental data ; Exposure ; Reprints ; Caddis fly ; Brachycentrus americanus ; Water pollution effects(Animals) ; Thermal pollution
Library Call Number Additional Info Location Last
NTIS  PB-290 672 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 4p
Wild-collected Brachycentrus americanus larvae were subjected to thermal shocks of 30-minute and 60-minute duration in June, September, and December of 1976. Temperatures at collection were 14.7, 10.4, and 1.2 C, respectively. The TL50's for both 30-minute and 60-minute shock durations ranged from 33.3C to 34.C for each month, except for a 30-minute exposure in September, which had a TL50 of 34.6C. Larvae from a December exposure were held for 16 days to observe postexposure behavior. Feeding was reduced 50 percent among specimens exposed to temperatures 1.2C below the 30-minute TL50 and 3.6C below the 60-minute TL50.