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Table 2.

Conductance of maximum current, half-voltage and slope factor of steady-state activation and steady-state inactivation for INain fish ventricular myocytes

Acclimation temperature (°C)
Cold-acclimated (c.a.)
Warm-acclimated (w.a.)
+4N+11N+11N+18N
Crucian carp         
   Conductance (pS/pF) 0.18±0.03a,†,‡ 11 0.26±0.03a,* 15 0.51±0.08a,† 0.79±0.10a 11 
   V0.5 steady-state activation (mV) -41.45±2.45a 11 -42.32±1.47a 15 -38.92±1.68a -39.27±2.45a 11 
   Slope 9.59±0.62a,‡ 11 8.50±0.44b,* 15 6.70±0.60a 7.73±0.57a 11 
   V0.5 steady-state inactivation (mV) -98.09±1.42a,‡ 10 -94.53±1.79a 11 -91.12±1.32a -89.58±1.02a 10 
   Slope 3.67±0.81a,‡ 10 5.53±0.64a 11 6.10±0.16a 5.85±0.09a 10 
Rainbow trout         
   Conductance (pS/pF) 0.49±0.04b,†,‡ 12 0.75±0.10b,* 10 0.54±0.03a,† 16 0.78±0.06a 10 
   V0.5 steady-state activation (mV) -36.51±1.80a,‡ 14 -37.78±1.16a,* 13 -31.45±1.25a 17 -31.72±1.02a 18 
   Slope 7.32±0.30b,‡ 14 8.50±0.39b 13 7.32±0.20a,† 17 9.05±0.39a 18 
   V0.5 steady-state inactivation (mV) -81.91±2.21b 11 -82.81±1.79b 14 -79.58±1.28a 21 -79.39±1.59a 19 
   Slope 6.42±0.23b 11 6.60±0.29a 14 6.05±0.12a,† 21 6.64±0.25a 19 
Burbot         
   Conductance (pS/pF) 0.54±0.06b,† 16 0.95±0.07b 11     
   V0.5 steady-state activation (mV) -40.45±1.65a 16 -40.09±2.16a 11     
   Slope 6.61±0.34b 16 5.77±0.37a 11     
   V0.5 steady-state inactivation (mV) -92.06±2.21a 12 -90.35±2.67a 10     
   Slope 5.21±0.28a 12 5.34±0.24a 10     
Acclimation temperature (°C)
Cold-acclimated (c.a.)
Warm-acclimated (w.a.)
+4N+11N+11N+18N
Crucian carp         
   Conductance (pS/pF) 0.18±0.03a,†,‡ 11 0.26±0.03a,* 15 0.51±0.08a,† 0.79±0.10a 11 
   V0.5 steady-state activation (mV) -41.45±2.45a 11 -42.32±1.47a 15 -38.92±1.68a -39.27±2.45a 11 
   Slope 9.59±0.62a,‡ 11 8.50±0.44b,* 15 6.70±0.60a 7.73±0.57a 11 
   V0.5 steady-state inactivation (mV) -98.09±1.42a,‡ 10 -94.53±1.79a 11 -91.12±1.32a -89.58±1.02a 10 
   Slope 3.67±0.81a,‡ 10 5.53±0.64a 11 6.10±0.16a 5.85±0.09a 10 
Rainbow trout         
   Conductance (pS/pF) 0.49±0.04b,†,‡ 12 0.75±0.10b,* 10 0.54±0.03a,† 16 0.78±0.06a 10 
   V0.5 steady-state activation (mV) -36.51±1.80a,‡ 14 -37.78±1.16a,* 13 -31.45±1.25a 17 -31.72±1.02a 18 
   Slope 7.32±0.30b,‡ 14 8.50±0.39b 13 7.32±0.20a,† 17 9.05±0.39a 18 
   V0.5 steady-state inactivation (mV) -81.91±2.21b 11 -82.81±1.79b 14 -79.58±1.28a 21 -79.39±1.59a 19 
   Slope 6.42±0.23b 11 6.60±0.29a 14 6.05±0.12a,† 21 6.64±0.25a 19 
Burbot         
   Conductance (pS/pF) 0.54±0.06b,† 16 0.95±0.07b 11     
   V0.5 steady-state activation (mV) -40.45±1.65a 16 -40.09±2.16a 11     
   Slope 6.61±0.34b 16 5.77±0.37a 11     
   V0.5 steady-state inactivation (mV) -92.06±2.21a 12 -90.35±2.67a 10     
   Slope 5.21±0.28a 12 5.34±0.24a 10     

Dissimilar letters indicate a statistically significant difference between species; * between w.a. and c.a. animals of the same species; between experimental temperatures; between c.a. and w.a. fish in their physiological body temperatures.

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