Table 2.

Plasma ion concentrations in eels exposed for at least 6 weeks to water CO2 partial pressures (PwCO2) of approx. 0.8 mmHg (ambient control), 15±1 mmHg, 30±1 mmHg or 45±1 mmHg

PwCO2 (mmHg)[Cl-] (mequiv l-1)[Na+] (mequiv l-1)[Ca2+] (mequiv l-1)
Approx. 0.8118±7a140±7a6.9±0.5a
15±190±5a,b116±5a7.1±2.5a
30±184±13a,b120±8a6.6±0.4a
45±171±10b116±7a9.2±1.0a
  • 1 mmHg equals=0.01316 kPa.

    Values are mean ± 1 S.E.M., N=5-7 determinations.

    A common superscript indicates no significant difference between groups (P>0.05).