Chloephaga
| Sheldgoose | |
|---|---|
| |
| Ruddy-headed goose, Chloephaga rubidiceps | |
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Anseriformes |
| Family: | Anatidae |
| Subfamily: | Tadorninae |
| Genus: | Chloephaga Eyton, 1838 |
| Type species | |
| Anas magellanica[1] = Anas leucoptera Gmelin, JF 1789
| |
| Species | |
Chloephaga is a genus of sheldgeese in the family Anatidae. Other sheldgeese are found in the genera Alopochen and Neochen.
Taxonomy
[edit | edit source]The genus Chloephaga was introduced in 1838 by the English naturalist Thomas Campbell Eyton in his A Monograph on the Anatidae, or Duck Tribe.[2] He designated the type species as Chloephaga magellanica. This is Anas magellanica Gmelin, JF 1789, which is a synonym of Anas leucoptera Gmelin, JF 1789. Anas leucoptera is now considered as a subspecies of the upland goose Chloephaga picta leucoptera.[3] The genus name comes from the combination of the Ancient Greek khloē meaning "grass" with -phagos meaning "-eating".[4]
A molecular phylogenetic study by Mariana Bulgarella and collaborators published in 2014 found that the Orinoco goose in the monotypic genus Neochen, was embedded in the genus Chloephaga:[5]
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Based on this result, some authorities place the Orinoco goose together with the Andean goose in the resurrected genus Oressochen.[6][7][8]
A fossilized partial coracoid (CTES-PZ 7797) of an indeterminate Chloephaga species sharing some characters with the extant upland goose is known from the upper Pleistocene Toropí Formation (also called the Yupoí Formation) in Corrientes Province, Argentina, 700 kilometers further north than the northernmost present-day record of the genus.[9]
Species
[edit | edit source]The genus contains five species.[10]
| Common name | Scientific name and subspecies | Range | Size and ecology | IUCN status and estimated population |
|---|---|---|---|---|
| Andean goose
|
Chloephaga melanoptera (Eyton, 1838) |
Peru to south Chile and Argentina
|
Size: Habitat: Diet: |
LC
|
| Upland goose or Magellan goose
Error creating thumbnail: |
Chloephaga picta (Gmelin,, 1789) two subspecies
|
southernmost South America Map of range |
Size: Habitat: Diet: |
LC
|
| Kelp goose
File:Chloephaga hybrida.jpg |
Chloephaga hybrida (Molina, 1782) two subspecies
|
Chile's southern half to the eastern tip of Tierra del Fuego and the Falkland Islands Map of range |
Size: Habitat: Diet: |
LC
|
| Ashy-headed goose | Chloephaga poliocephala P.L. Sclater, 1857 |
southernmost South America Map of range |
Size: Habitat: Diet: |
LC
|
| Ruddy-headed goose | Chloephaga rubidiceps Sclater, PL, 1861 |
Tierra del Fuego, Chile and the Falkland Islands and southern Argentina Map of range |
Size: Habitat: Diet: |
LC
|
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References
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