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Table 3.

Kinetics of the Na⁺ current in crucian carp, rainbow trout and burbot ventricular myocytes

	Acclimation temperature (°C)
	Cold-acclimated (c.a.)							Warm-acclimated (w.a.)
Time constant τ (ms)	+4	N	+11	N	+11	N	+18	N
Crucian carp
Recovery from inactivation	40.27±3.72^a,‡	9	42.69±3.30^a,*	12	29.61±3.16^a,†	6	19.25±2.05^a	10
Rested-state inactivation	22.85±3.38^a,‡	11	24.39±4.13^a	13	21.67±3.96^a	6	32.48±3.78^a	12
Kinetics of inactivation	1.69±0.02^a,†,‡	10	1.32±0.11^a	14	1.25±0.05^a,†	6	0.66±0.02^a	8
Rainbow trout
Recovery from inactivation	28.17±2.39^b,‡	10	22.29±1.72^b	12	21.69±1.79^a	19	17.26±1.63^a	13
Rested-state inactivation	24.36±1.37^a	10	25.25±1.89^a	11	29.60±2.25^a	12	29.85±4.02^a	13
Kinetics of inactivation	1.12±0.05^b,†,‡	11	0.64±0.02^b,*	10	0.99±0.05^b,†	16	0.62±0.03^a	10
Burbot
Recovery from inactivation	47.36±3.10^a,†	10	24.22±2.20^b	10
Rested-state inactivation	19.39±4.01^a	10	18.26±3.66^a	8
Kinetics of inactivation	1.86±0.08^a,†	14	0.89±0.05^b	11

	Acclimation temperature (°C)
	Cold-acclimated (c.a.)							Warm-acclimated (w.a.)
Time constant τ (ms)	+4	N	+11	N	+11	N	+18	N
Crucian carp
Recovery from inactivation	40.27±3.72^a,‡	9	42.69±3.30^a,*	12	29.61±3.16^a,†	6	19.25±2.05^a	10
Rested-state inactivation	22.85±3.38^a,‡	11	24.39±4.13^a	13	21.67±3.96^a	6	32.48±3.78^a	12
Kinetics of inactivation	1.69±0.02^a,†,‡	10	1.32±0.11^a	14	1.25±0.05^a,†	6	0.66±0.02^a	8
Rainbow trout
Recovery from inactivation	28.17±2.39^b,‡	10	22.29±1.72^b	12	21.69±1.79^a	19	17.26±1.63^a	13
Rested-state inactivation	24.36±1.37^a	10	25.25±1.89^a	11	29.60±2.25^a	12	29.85±4.02^a	13
Kinetics of inactivation	1.12±0.05^b,†,‡	11	0.64±0.02^b,*	10	0.99±0.05^b,†	16	0.62±0.03^a	10
Burbot
Recovery from inactivation	47.36±3.10^a,†	10	24.22±2.20^b	10
Rested-state inactivation	19.39±4.01^a	10	18.26±3.66^a	8
Kinetics of inactivation	1.86±0.08^a,†	14	0.89±0.05^b	11

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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