Table 1.

Ammonia concentration in the external medium in the head or body compartments of the chamber in which P. schlosseri was exposed for 24 h to 50%SW at pH 7.0 in the head compartment and 0 or 30 mmol l-1 NH4Cl at pH 7.0 or pH 8.0 in the tail compartment

Condition [Ammonia] (mmol l-1) in the external medium
SetCompartmentpH[NH4Cl] (mmol l-1)0 h6 h24 hpH after 24 h
1Head700.021±0.0061.8±0.2a7.6±0.8a,b7.12±0.12
Tail700.024±0.0050.11±0.030.69±0.23a7.02±0.11
2Head700.021±0.0052.3±0.3a8.2±0.3a,b7.06±0.08
Tail73029.7±0.829.5±0.729.4±0.87.03±0.07
3Head700.023±0.0045.0±1.2a,119.5±2.5a,b,1,27.04±0.06
Tail83031.2±0.830.5±0.928.9±1.17.82±0.10
  • Values are means ± s.e.m. (N=5).

  • a Significantly different from the 0 h value

  • b significantly different from the 6 h value

  • 1 significantly different from the corresponding set 1 value

  • 2 significantly different from the corresponding set 2 value