Record Display for the EPA National Library Catalog

RECORD NUMBER: 457 OF 469

Main Title Use of Fish Ventilation Frequency to Estimate Chronically Safe Toxicant Concentrations.
Author Tubb, Richard A. ;
CORP Author Corvallis Environmental Research Lab., OR.
Year Published 1982
Report Number EPA-600/J-82-225;
Stock Number PB82-261462
Additional Subjects Zinc ; Toxicity ; Trout ; Water pollution ; Exposure ; Ventilation ; Concentration(Composition) ; Tests ; Responses ; Reprints ; Salmo gairdneri ; Steelhead trout
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB82-261462 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
Abstract
A 96-hour toxicity test with fish ventilation frequency as the response variable was developed to estimate safe zinc concentrations for steelhead Salmo gairdneri. Two Oregon steelhead strains were exposed to zinc at different water temperatures and total hardnesses (7, 12, and 17C; 25 and 125 mg/liter as CaCO3). Ventilation frequencies enumerated from bioelectric potential generated by buccal and opercular openings and closings showed significant increases at the highest test concentration in five of 10 tests. This indicates that ventilation-frequency tests are at least as sensitive as long-term toxicity tests and may be used to screen chemicals for potential harmful effects on fish.