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Figure 3


Fig. 3. (A) Heart rate, (B) stroke volume and (C) cardiac output of tadpole shrimp reared under normoxic (19–21 kPa O2; open circles), moderately hypoxic (10–13 kPa O2; gray circles) or severe hypoxic (1–3 kPa O2; black circles) conditions exposed to normoxic (20 kPa O2) and hypoxic (10, 5 and 2 kPa O2) conditions. Values are means ± s.e.m. (N≥13). Significance is assumed at the level of P<0.05: asignificant difference from control animals at same PO2; bsignificant difference from the same animal at preceding PO2; csignificant difference from the same animals at 20 kPa O2.