Perching duck

From Wikipedia, the free encyclopedia
Jump to: navigation, search

The perching ducks ("Cairininae" or "Cairinini") were previously treated as a small group of ducks in the duck, goose and swan family Anatidae, grouped together on the basis of their readiness to perch high in trees. It has been subsequently shown that the grouping is paraphyletic and their apparent similarity results from convergent evolution, with the different members more closely related to various other ducks than to each other.[1]

The species previously included, and their current subfamilial allocation, are:

Plectropterinae

Tadorninae

Anatinae

In addition, several species cannot with certainty be allocated to a subfamily, though they do not form a distinct clade. Rather, their characters are too ambiguous to allow unequivocal placement based on the available data:[1][2][3]

References[edit]

  1. ^ a b Livezey, Bradley C. (1986). "A phylogenetic analysis of recent anseriform genera using morphological characters". Auk 103 (4): 737–754. 
  2. ^ Sraml, M.; Christidis, L.; Easteal, S.; Horn, P. & Collet, C. (1996). "Molecular Relationships Within Australasian Waterfowl (Anseriformes)". Australian Journal of Zoology 44 (1): 47–58. doi:10.1071/ZO9960047. 
  3. ^ Johnson, Kevin P. & Sorenson, Michael D. (1999). "Phylogeny and biogeography of dabbling ducks (genus Anas): a comparison of molecular and morphological evidence". Auk 116 (3): 792–805. doi:10.2307/4089339.