Table 2.

Values of Akaike's information criterion (AIC) for evolutionary models (with λ = 0,1, or taking the maximum likelihood (ML) value) for Q₁₀-normalized standard metabolic rate (SMR), Q₁₀-normalized mitochondrial respiration, and Q₁₀-normalized citrate synthase (CS) activity. (Evolutionary models are for the best-fit statistical models from tables 1 and 3.)

evolutionary model	SMR		mitochondrial respiration		CS activity
	λ	AIC	λ	AIC	λ	AIC
star	0	−2.98	0	6.01	0	−6.5
Grafen	ML = 0	−0.98	ML = 0	8.01	ML = 0.39	−6.0
	1	6.27	1	32.9	1	18
Nee	ML = 1	−2.33	ML = 0	8.01	ML = 0.40	−7.5
	1	−4.33	1	17.0	1	−3.5
Pagel	ML = 0.97	−2.03	ML = 0	8.01	ML = 0.37	−6.0
	1	−3.97	1	24.6	1	0.1
punctuated	ML = 0	−0.98	ML = 1	7.04	ML = 0	−4.5
	1	−2.61	1	5.04	1	4.2