Figure 6.

Plasma metabolomic analysis during natural arousal from torpor shows spike of PUFA metabolites during early arousal. Plasma Fatty Acids and PUFAs increase significantly during early natural arousal from torpor. Data shown are relative abundance normalized to plasma sample collected at entrance into torpor at a T_b of 11–12 °C. The x-axis are phases of rewarming in natural arousal from torpor. (*p < 0.05, **p < 0.001 vs late torpor, post hoc Tukey, n = 9). Measurements are from individual animals sampled over a single, undisturbed natural arousal fed Standard Rodent Chow. Blood was sampled at specific core body temperatures (T_b) during arousal ranging from early arousal (2.5 °C) to full arousal (35 °C). Data shown as mean $\pm$ SEM.