Fig. 2.

Seasonal respiration rates in isolated brain mitochondria. State 3 respiration rates were measured at complexes I–III at 25°C. Time points at each complex that are not connected by the same letter are significantly different [Tukey’s honestly signnificant difference (HSD) test, P < 0.05]. The number of samples for each group is indicated at the bottom in the corresponding bar. Data are expressed as means ± SE. G/M, glutamate/malate; G3P, glycerol-3-phosphate; SP, spring; SUC, succinate; TOR, torpor; IBA, interbout arousal; SE, standard error.