Figure 3.

Levels of (A) mean oxygen consumption (VO₂ in ml*kg^−1*h⁻¹), (B) Respiratory Exchange Ratio (RER), (C) mean Energy Expenditure (in kcal*h⁻¹) measured during the night (active phase) and the day (resting phase) in female (F) and male (M) mouse lemurs before (light gray) and after (dark gray) a 2-week exposure to a 60% caloric restriction. Thyroxinemia (T4, in nmol.l-1, D) was measured in the same animals during the resting period only. Boxes indicate least square means and error bars represent the 95% confidence interval, except for T4, which is represented as median and total range. Significant differences within sex groups (effect of CR, lower bars) and between sex groups (effect of sex, upper bars) are represented. *< 0.05.