Fig. 4. Hemoglobin concentrations of tadpole shrimp reared under normoxic
(1921 kPa O2), moderate (1013 kPa O2) or
severe hypoxic (13 kPa O2) conditions. Values are means
± s.e.m. (N
10). *Significant difference from control
(normoxic) animals (P<0.05).