Figure 2. Respiratory and cardiovascular responses to feeding in normoxia and moderate hypoxia.

G. morhua were force-fed 2% of their body mass at time zero. The variables are oxygen uptake (MO₂), cardiac output (CO), heart rate (HR) and coeliac (Q_ce, diamonds) and mesenteric (Q_me, circles) blood flow. Filled symbols are fish exposed solely to normoxic conditions (n = 7) and open symbols are fish exposed to normoxic conditions except for 90 min of exposure to 35% O₂ saturation (grey area) (n = 7). All values are mean ± SE. Solid vertical lines indicates pre-feeding baseline values, in case of MO₂ and HR the dotted lines are ± SE.