You are here:
DISTRIBUTION OF FINGERLING BROOK TROUT, SALVELINUS FONTINALIS (MITCHELL), IN DISSOLVED OXYGEN CONCENTRATION GRADIENTS
Citation:
Spoor, W. DISTRIBUTION OF FINGERLING BROOK TROUT, SALVELINUS FONTINALIS (MITCHELL), IN DISSOLVED OXYGEN CONCENTRATION GRADIENTS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-90/151 (NTIS PB91109892).
Description:
A self-recording linear gradient tank and procedures are described in which individual brook trout fingerlings unstressed by recent transfer, unaccustomed surroundings or the presence of an observer could move freely in 16 oxygen concentration gradients within the limits of 1 and 8-9 mg O2 l-4. hey avoided oxygen concentrations below 4 mgl-4 most of he time and preferred 5 mgl-4 or higher more than half the time, which supports the field-derived belief that fish avoid oxygen concentrations below 5 mgl-4 in the natural environment if they can.