Table 1

Comparison of alternative selection models showing the number of parameters (k) in each model.

Traits in the model

k

AIC

Δi

Likelihoods

wi

Evidence Ratio


Preferred model

7

893.91

0

1

0.6066

Head Height

8

895.7

1.79

0.4099

0.2478

2.4473

Tail Muscle Height

9

897.69

3.78

0.151

0.0916

6.6194

Head Height2

10

899.81

5.9

0.0523

0.0317

19.106

Tail Muscle Height2

11

901.23

7.32

0.0257

0.0156

38.8613

Tail Fin Height2

12

902.95

9.04

0.0108

0.0066

91.8356


AIC score = Akaike Information Criterion; ΔI = difference in AIC scores between the best model and subsequent model; wi = normalized relative likelihood of the model given the data; Evidence Ratio = the relative odds that a model is the best given the data. The first row of the table represents the preferred model, which includes linear terms for Head Length, Tail Length, and Tailfin Height, and quadratic terms for Head Length and Tail Length (see Table 4). Subsequent rows show the influence of adding each indicated trait in succession. Traits labeled with a superscript "2" represent quadratic terms.

Calsbeek and Kuchta BMC Evolutionary Biology 2011 11:353   doi:10.1186/1471-2148-11-353

Open Data