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Table 2 A comparison of the level of support for possible explanatory models that describe the variation in desaturation of endogenous fatty acids (Desaturation index: ∆9-DI) in semi-aquatic mammals (n = 22)

From: From low to high latitudes: changes in fatty acid desaturation in mammalian fat tissue suggest a thermoregulatory role

Model

∆ AICc

PGLS λ

Effect size (r)

Weighted AICc

β0+ βlatitude

0.0

0.45

0.60

0.67

β0+ βlatitude + βhair_density

2.5

0.53

0.61

0.19

β0+ βlatitude* βhair_density

4.1

0.00

0.63

0.09

βhair_density

6.0

0.00

0.38

0.03

β0

6.5

0.22

–

0.03

  1. The results are produced from phylogenetic generalised least squares (PGLS) analysis across 1000 alternate resolutions of mammalian phylogeny