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Figure 4


Fig. 4. Effect of partial pressure of oxygen on the time (s) spent in aquatic surface respiration (ASR; male-male competitive environment) by male eastern mosquito fish Gambusia holbrooki acclimated to either hypoxic or normoxic conditions for at least 6 weeks. Values are means ± s.e.m., N=15 for each acclimation group. *Significant results at P<0.05.