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Table 2.

Mean oxygen consumption rate and Q10 values for the seven populations of the subterranean crustacean N. rhenorhodanensisfor a temperature range of 10°C to 3°C

PopulationOxygen consumption rate at 10°C (μmol O2h–1 g–1 fresh mass)Oxygen consumption rate at 3°C (μmol O2 h–1g–1 fresh mass)Q10 values
Kpi 284.6±11.1 165.1±12.3* 1.98 
Kco 274.0±10.3 145.0±10.1* 2.21 
Kvol 342.1±21.4 114.4±14.4* 3.93 
Kch1 292.5±5.0 171.4±7.8* 1.95 
Kch2 324.8±19.4 174.3±5.0* 2.18 
Kfr 353.5±3.3 191.7±13.6* 2.15 
Kalex 453.0±17.4 102.6±10.4* 6.4 
PopulationOxygen consumption rate at 10°C (μmol O2h–1 g–1 fresh mass)Oxygen consumption rate at 3°C (μmol O2 h–1g–1 fresh mass)Q10 values
Kpi 284.6±11.1 165.1±12.3* 1.98 
Kco 274.0±10.3 145.0±10.1* 2.21 
Kvol 342.1±21.4 114.4±14.4* 3.93 
Kch1 292.5±5.0 171.4±7.8* 1.95 
Kch2 324.8±19.4 174.3±5.0* 2.18 
Kfr 353.5±3.3 191.7±13.6* 2.15 
Kalex 453.0±17.4 102.6±10.4* 6.4 

Values are means ± s.d.

Q10 values reflect the capacity of organisms to change their metabolic rate relative to changes in temperature (between 10 and 3°C here)

*

Significant difference (t-test, P<0.001) between cold-acclimated and control groups

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