Anas - WikiHQ

Anas is a genus of dabbling ducks. It includes the pintails, most teals, and the mallard and its close relatives. It formerly included additional species but following the publication of a molecular phylogenetic study in 2009 the genus was split into four separate genera. Anas is the Latin word for a duck. The genus formerly included additional species. In 2009 a large molecular phylogenetic study was published that compared mitochondrial DNA sequences from ducks, geese and swans in the family Anatidae. The results confirmed some of the conclusions of earlier smaller studies and indicated that the genus as then defined was non-monophyletic. Based on the results of this study, Anas was split into four proposed monophyletic genera with five species including the wigeons transferred to the resurrected genus Mareca, ten species including the shovelers and some teals transferred to the resurrected genus Spatula and the Baikal teal placed in the monotypic genus Sibirionetta.

Species

There are 31 extant species recognised in the genus:

†Anas sp. (mid-sized species from the Late Miocene of Rudabánya, Hungary)
†Anas bunkeri (Wetmore 1944) (Early -? Middle Pliocene – Early Pleistocene of WC USA) – Nettion red-and-green head clade?
†Anas ganii Burchak-Abramovich, Suspanov and David 1996 (Late Pliocene/Early Pleistocene of Moldova)
†Anas greeni (Brodkorb 1964) (Late Miocene?/Early Pliocene of South Dakota, USA) – Nettion red-and-green head clade (doubtful)?
†Anas itchtucknee McCoy 1963 (Late Pleistocene of Florida, USA) doubtful validity
†Anas kisatibiensis Burchak-Abramovich and Mczedlidze 1995 (nomen nudum) (Early Pliocene of Kisatibi, Georgia)
†Anas kurochkini Zelenkov & Panteleyev 2015 (Late Miocene of Sea of Azov, southern Russia)
†Anas lambrechti Spillman 1942 [Archaeoquerquedula lambrechti] (Pleistocene of Ecuador)
†Anas ogallalae (Brodkorb 1962) (Late Miocene?/Early Pliocene of Kansas, USA) – Nettion red-and-green head clade (doubtful)?
Bermuda Islands flightless duck †Anas pachyscelus Wetmore 1960 (Late Pleistocene of Bermuda, W Atlantic)
†Anas pullulans (Brodkorb 1961) (Late Miocene?/Early Pliocene of Oregon, USA) – Punanetta?
†Anas schneideri Emslie 1985 (Late Pleistocene of Little Box Elder Cave, USA)
†"Anas" robusta is now tentatively placed in Anserobranta.
†"Anas" sansaniensis is now placed in Chenoanas
†"Anas" velox (Middle – Late? Miocene of C Europe) and "A." meyerii (Middle Miocene of Öhningen, Germany; possibly the same species) do not seem to belong Anas, and they may be ancestral dabbling ducks. Anas gracilipes and Anas strenuum (Late Pleistocene of Australia) are both junior synonyms of the extant Chestnut teal.