The Company of Biologists

Table 1.

Effects of pH and ammonia on oxygen consumption, carbon dioxide excretion and respiratory exchange ratio (RE) of Misgurnus anguillicaudatus

Conditions	O₂ consumption	CO₂ excretion	RE
pH 7.0	0.071±0.013	0.064±0.001	1.05±0.23
pH 8.0	0.064±0.005	0.059±0.008	0.92±0.10
pH 9.0	0.076±0.009	0.075±0.011	0.93±0.06
pH 7.0 + 15 mmol l^-1 NH₄Cl	0.081±0.008	0.085±0.008	1.05±0.05

Conditions	O₂ consumption	CO₂ excretion	RE
pH 7.0	0.071±0.013	0.064±0.001	1.05±0.23
pH 8.0	0.064±0.005	0.059±0.008	0.92±0.10
pH 9.0	0.076±0.009	0.075±0.011	0.93±0.06
pH 7.0 + 15 mmol l^-1 NH₄Cl	0.081±0.008	0.085±0.008	1.05±0.05

Units of O₂ consumption and CO₂ excretion are μmol min^-1 g^-1 fish.

Values are means ± s.e.m., N=6.