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Figure 1


Fig. 1. Time course of respirometry in a bluefin tuna. Oxygen consumption (MO2, filled circles) was calculated from the slope of ambient [O2] measured during 10 min periods with the swim tunnel sealed. An overnight acclimation period preceded tests of swim speed (blue line, in BL s–1) and temperature (black line) effects on MO2. The arrow during the acclimation period indicates elevated MO2 measurements following a power surge, which startled the fish. Speed changes are described elsewhere (Blank et al., 2007) and were not a part of the present study.





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