Topic
Anas acuta
8
Anas americana
8
Anas clypeata
8
Anas crecca carolinensis
8
Anas crecca crecca
Anas penelope
8
Anas platyrhynchos
8
Anas strepera
8
Anatidae
8
comparative phylogeography
8
sex-biased gene flow
8
Asia
6
Europe
6
Holarctic
6
North America
6
dabbling ducks
6
genetic drift
6
selection
6
Life sciences
1
envir
1
geo
1
medicine and health care
1