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Fig. 2. Cardiovascular characteristics (A) and ventilation rate (B) of short-horned
sculpin Myoxocephalus scorpius exposed to graded hypoxia and
reoxygenation (8°C). (C) DO2 was reduced to 5.6 and 3.8 mg
l-1 for 0.5 h each, followed by 6 h at 2.0 mg l-1 and 1
h reoxygenation. *Significant difference (P<0.05) from
normoxia. FH, heart rate;
, cardiac output;
VS, stroke volume; FV, ventilation
rate.