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Table 1 Results of phylogenetic generalized least squares (PGLS) analyses for the final model using nuclear DNA (nDNA) and mitochondrial DNA (mtDNA) (a), and mtDNA only (b)

From: Factors affecting interspecific differences in genetic divergence among populations of Anolis lizards in Cuba

(a) nDNA+mtDNA

(b) mtDNA

 

d.f.

F-value

P-value

 

d.f.

F-value

P-value

(Intercept)

1

4.8154

0.0594

 

1

6.518581

0.0287

Species age

1

12.070760

0.0084

Age

1

8.767710

0.0143

Geographic distance

1

11.052356

0.0105

Geographic distance

1

19.783943

0.0012

Environmental heterogeneity

1

0.027673

0.8720

Ecomorph

6

0.891333

0.5358

Ecomorph

6

1.219130

0.3866

Geographic distance × species age

1

3.526034

0.0899

Geographic distance × species age

1

3.532252

0.0970

Geographic distance × ecomorph

6

2.114500

0.1412

Geographic distance × environmental heterogeneity

1

2.174493

.1785

    

Geographic distance × ecomorph

6

2.102918

0.1631

    
  1. The effects of species age, ecomorph, and environmental heterogeneity within species ranges on average genetic divergence among populations of each species; geographic distances were included as a covariate. PGLS analyses were performed using a full model that included all explanatory variables and possible interaction terms. Non-significant variables were then removed from the full model using a backward stepwise procedure with log-likelihood ratio tests. The final analytical model included only significant variables and their interaction terms
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Zoological Letters

ISSN: 2056-306X

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