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RECORD NUMBER: 50 OF 489

OLS Field Name OLS Field Data
Main Title Avoidance of Copper and Nickel by Rainbow Trout as Monitored by a Computer-Based Data Acquisition System.
Author Giattina, J. D. ; Garton, R. R. ; Stevens, D. G. ;
CORP Author Corvallis Environmental Research Lab., OR.
Year Published 1982
Report Number EPA-600/J-82-197;
Stock Number PB84-138601
Additional Subjects Toxicology ; Copper ; Nickel ; Exposure ; Response ; Reprints ; Water pollution effects(Animals) ; Rainbow trout ; Salmo gairdneri ; Heavy metals
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB84-138601 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 17p
Abstract
The avoidance response of rainbow trout Salmo gairdneri to copper and nickel solutions under several exposure regimes was evaluated with a computer-based data aquisition system interfaced with a linear, plexiglass chamber with countercurrent water flow. The best estimates of the avoidance thresholds for these metals were 6.4 micrograms/1 total copper and 23.9 micrograms/1 total nickel (95% confidence limits were 2.6-15.5 and 10.2-54.3 micrograms/1, respectively). For each metal, avoidance threshold concentrations were different whether fish were exposed in shallow or steep concentration gradients. Also, no significant differences were found when fish received multiple, increasing exposures, or a single exposure in steep-gradient conditions. Rainbow trout initially avoided low copper concentrations, but were attracted to higher ones (330-390 micrograms/1) during shallow-gradient tests. Under similar test conditions, fish were attracted to low nickel concentrations (about 6 micrograms/1) but avoided higher levels ( >19 micrograms/1).