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Fig. 2. (A) Oxygen consumption
(
O2) and (B)
cardiac output (
) of resting (•)
and swimming (
) sockeye salmon during an acute temperature increase of
2°C h–1. For swimming fish, an initial resting value at
15°C was obtained prior to swimming (
). At the end of the acute
temperature increment, water velocity for the swimming fish was immediately
decreased to the resting level and the temperature was decreased to 15°C
over an hour before a recovery measurement was recorded for both groups. All
values are means ± s.e.m. Different letters indicate significant
differences between temperatures within the same group. An asterisk indicates
a significant difference between resting and swimming fish at a given
temperature.
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