Table 1 A comparison of the level of support for possible explanatory models that describe the variation in desaturation of endogenous (Desaturation index: ∆9-DI) and total fatty acids (Double bond index: DBI) in mammals (n = 54)
Model | ∆ AICc | PGLS λ | Effect size (r) | Weighted AICc |
|---|---|---|---|---|
Desaturation index (∆9-DI) | ||||
 β0+ βlatitude * βenvironment | 0.0 | 0.47 | 0.57 | 0.65 |
 β0+ βlatitude + βenvironment | 2.0 | 0.44 | 0.50 | 0.24 |
 β0+ βlatitude | 4.2 | 0.61 | 0.36 | 0.09 |
 β0+ βenvironment | 7.0 | 0.37 | 0.38 | 0.02 |
 β0 | 9.1 | 0.56 | – | 0.01 |
Double bond index (DBI) | ||||
 β0+ βenvironment | 0.0 | 0.00 | 0.70 | 0.61 |
 β0+ βlatitude + βenvironment | 1.2 | 0.00 | 0.69 | 0.33 |
 β0+ βlatitude * βenvironment | 4.6 | 0.00 | 0.72 | 0.06 |
 β0 | 14.0 | 0.68 | – | 0.00 |
 β0 + βlatitude | 16.3 | 0.68 | 0.04 | 0.00 |