|SREL Reprint #0488
Tolerance of Stream Cyprinid Minnows
R. W. McFarlane, B. C. Moore, and S. E. Williams
The responses to thermal stress of three cyprinid
minnows (Notropis lutipinnis, N. Cummingsae, and (Semotilus
atromaculatus), which inhabit tributaries of the Savannah River but are
excluded from thermally stressed streams, were determined for fish tested
individually and in groups. All
species exhibited the same precipitous response, with excellent survival at five
rates of heating, but rapid mortality occurred at 33 to 34°C.
Slow heating rates did not elevate the upper limits of tolerance.
Acclimation did not occur when temperature was continuously raised but
did occur when the fish were subjected to constant sublethal temperatures.
SREL Reprint #0488
McFarlane, R.W., B.C. Moore, and S.E. Williams. 1976. Thermal tolerance of stream cyprinid minnows. p. 141 144. In Thermal Ecology II, edited by G.W. Esch and R.W. McFarlane. CONF 750425. ERDA Symposium Series.