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Table 2 Significant D-statistics (Z-score > 3 and p < 0.0001) for different combination of three goose species

From: A history of hybrids? Genomic patterns of introgression in the True Geese

P1

P2

P3

D-statistics

Z-score

BRANTA

 Barnacle Goose

Cackling Goose

Canada Goose

0.087

4.322

 Barnacle Goose

Cackling Goose

Red-breasted Goose

0.146

6.022

 Barnacle Goose

Cackling Goose

Black Brent

0.094

3.516

 Barnacle Goose

Canada Goose

Red-breasted Goose

0.1

4.037

 Barnacle Goose

Hawaii Goose

Red-breasted Goose

0.094

4.192

 Barnacle Goose

Black Brent

Red-breasted Goose

0.073

3.022

ANSER

 Lesser White-fronted

Greater White-fronted

Pink-footed Goose

0.126

6.116

 Taiga Bean Goose

  

0.09

4.413

 Pink-footed Goose

Greater White-fronted

Emperor Goose

0.088

3.701

 Tundra Bean Goose

  

0.079

3.383

 Taiga Bean Goose

  

0.128

5.457

 Greylag Goose

  

0.079

3.537

 Taiga Bean Goose

Greater White-fronted

Bar-headed Goose

0.083

3.470

 Greater White-fronted

Lesser White-fronted

Swan Goose

0.114

5.279

 Pink-footed Goose

  

0.15

6.821

 Tundra Bean Goose

  

0.16

8.15

 Taiga Bean Goose

  

0.173

8.385

 Greater White-fronted

Lesser White-fronted

Ross’ Goose

0.104

5.325

 Pink-footed Goose

  

0.12

5.421

 Tundra Bean Goose

  

0.103

4.682

 Taiga Bean Goose

  

0.083

3.93

 Swan Goose

  

0.103

3.984

 Emperor Goose

  

0.102

4.51

 Greater White-fronted

Lesser White-fronted

Snow Goose

0.165

7.336

 Pink-footed Goose

  

0.174

7.032

 Tundra Bean Goose

  

0.157

7.053

 Taiga Bean Goose

  

0.137

6.224

 Swan Goose

  

0.156

6.525

 Greylag Goose

  

0.086

4.054

 Emperor Goose

  

0.14

6.007

 Pink-footed Goose

Lesser White-fronted

Emperor Goose

0.076

3.164

 Tundra Bean Goose

  

0.07

3.0

 Taiga Bean Goose

  

0.12

5.419

 Greylag Goose

  

0.078

3.472

 Taiga Bean Goose

Pink-footed Goose

Bar-headed Goose

0.082

3.436

 Greater White-fronted

Greylag Goose

Ross’ Goose

0.087

3.719

 Pink-footed Goose

  

0.107

4.496

 Tundra Bean Goose

  

0.086

3.408

 Swan Goose

  

0.084

3.049

 Emperor Goose

  

0.163

6.67

 Greater White-fronted

Greylag Goose

Snow Goose

0.072

3.055

 Pink-footed Goose

  

0.091

3.416

 Emperor Goose

  

0.139

5.59

 Emperor Goose

Tundra Bean Goose

Ross’ Goose

0.078

3.692

 Emperor Goose

Tundra Bean Goose

Snow Goose

0.074

3.317

 Emperor Goose

Taiga Bean Goose

Ross’ Goose

0.139

6.346

 Emperor Goose

Taiga Bean Goose

Snow Goose

0.139

6.655

 Taiga Bean Goose

Greylag Goose

Bar-headed Goose

0.09

4.059

  1. Asymmetric gene flow is between P2 and P3. The outgroup for Branta species was a consensus sequence based on all Anser species, while the outgroup for Anser species was a consensus sequence based on all Branta species