Anasis agenusofdabbling ducks.It includes the pintails, most teals, and themallardand its close relatives. It formerly included additional species but following the publication of amolecular phylogeneticstudy in 2009 the genus was split into four separate genera.[2]The genus now contains 31 living species. The nameAnasis theLatinfor "duck".
| Anas | |
|---|---|
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| Femalemallard(Anas platyrhynchos) with brood of young | |
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Anseriformes |
| Family: | Anatidae |
| Tribe: | Anatini |
| Genus: | Anas Linnaeus,1758 |
| Type species | |
| Anas boschas[1]=Anas platyrhynchos Linnaeus,1766
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| Species | |
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31 extant, see text | |
| Synonyms | |
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Systematics
editThegenusAnaswas introduced by the Swedish naturalistCarl Linnaeusin 1758 in thetenth editionof hisSystema Naturae.[3][4]Anasis the Latin word for a duck.[5]The genus formerly included additional species. In 2009 a largemolecular phylogeneticstudy was published that comparedmitochondrial DNAsequences from ducks, geese and swans in the familyAnatidae.The results confirmed some of the conclusions of earlier smaller studies and indicated that the genus as then defined wasnon-monophyletic.[2]Based on the results of this study,Anaswas split into four proposed monophyletic genera with five species including the wigeons transferred to the resurrected genusMareca,ten species including the shovelers and some teals transferred to the resurrected genusSpatulaand theBaikal tealplaced in themonotypicgenusSibirionetta.[6]
Species
editThere are 31 extant species recognised in the genus:[6]
| Image | Common Name | Scientific name | Distribution |
|---|---|---|---|
 |
African black duck | Anas sparsa | eastern and southern sub-Saharan Africa from South Africa n north to South Sudan and Ethiopia with outlying populations in western equatorial Africa, in south east Nigeria, Cameroon and Gabon. |
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Yellow-billed duck | Anas undulata | southern and eastern Africa. |
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Meller's duck | Anas melleri | eastern Madagascar. |
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Pacific black duck | Anas superciliosa | Indonesia, New Guinea, Australia, New Zealand, and many islands in the southwestern Pacific, reaching to the Caroline Islands in the north and French Polynesia in the east |
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Laysan duck | Anas laysanensis | Hawaiian Islands |
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Hawaiian duck | Anas wyvilliana | Hawaiian islands |
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Philippine duck | Anas luzonica | the Philippines |
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Indian spot-billed duck | Anas poecilorhyncha | Pakistan and India |
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Eastern spot-billed duck | Anas zonorhyncha | Southeast Asia |
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Mallard | Anas platyrhynchos | Alaska to Mexico, the Hawaiian Islands, across Eurasia, from Iceland and southern Greenland and parts of Morocco (North Africa) in the west, Scandinavia and Britain to the north, and to Siberia, Japan, and South Korea, in the east, south-eastern and south-western Australia and New Zealand |
 |
Mottled duck | Anas fulvigula | Gulf of Mexico coast between Alabama and Tamaulipas (Mexico) and Florida |
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American black duck | Anas rubripes | Saskatchewan to the Atlantic in Canada and the Great Lakes and the Adirondacks in the United States |
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Mexican duck | Anas diazi | Mexico and the southern United States. |
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Cape teal | Anas capensis | sub-Saharan Africa |
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White-cheeked pintail | Anas bahamensis | Caribbean, South America, and the Galápagos Islands |
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Red-billed teal | Anas erythrorhyncha | southern and eastern Africa |
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Yellow-billed pintail | Anas georgica | South America, the Falkland Islands and South Georgia |
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Eaton's pintail | Anas eatoni | island groups of Kerguelen and Crozet in the southern Indian Ocean |
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Northern pintail | Anas acuta | Europe, Asia and North America |
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Eurasian teal | Anas crecca | northern Eurasia |
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Green-winged teal | Anas carolinensis | North America except on the Aleutian Islands |
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Yellow-billed teal | Anas flavirostris | Argentina, the Falkland Islands, Chile, Peru, Bolivia, Uruguay, and Brazil. |
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Andean teal | Anas andium(formerly included inA. flavirostris) | Andean highlands of Colombia, Venezuela, and Ecuador |
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Sunda teal | Anas gibberifrons | Indonesia. |
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Andaman teal | Anas albogularis(formerly included inA. gibberifrons) | Andaman Islands (India) and Great Coco Island (Burma) |
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Grey teal | Anas gracilis | Australia and New Zealand |
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Chestnut teal | Anas castanea | Tasmania and southern Victoria, New Guinea and Lord Howe Island |
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Bernier's teal | Anas bernieri | Madagascar |
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Brown teal | Anas chlorotis | New Zealand |
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Auckland teal | Anas aucklandica | Auckland Islands south of New Zealand |
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Campbell teal | Anas nesiotis(formerly included inA. aucklandica) | New Zealand |
Extinct Species
- †Mariana mallard,Anas oustaleti
- †Mascarene teal,Anas theodori
- †Chatham Island Duck,Anas chathamica
Formerly placed inAnas:
- Bronze-winged duck,Speculanas specularis
- Crested duck,Lophonetta specularioides
- Baikal tealSibirionetta formosa
- Salvadori's teal,Salvadorina waigiuensis
- species in the genusMareca,the wigeons (including thegadwalland thefalcated duck)
- species in the genusSpatula,the shovelers and related teals
Phylogeny
editCladogram based on the analysis of Gonzalez and colleagues published in 2009.[2]
| Anas |
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Fossil record
edit
A number offossilspecies ofAnashave been described. Their relationships are often undetermined:
- †Anassp. (Late Miocene of China)
- †Anassp. (mid-sized species from the Late Miocene of Rudabánya, Hungary)[7]
- †Anas amotape(Campbell 1979)(Talara Tar Seeps Late Pleistocene of Peru)
- †Anas bunkeri(Wetmore 1944)(Early -? Middle Pliocene – Early Pleistocene of WC USA) –Nettionred-and-green head clade?[8]
- †Anas cheuenAgnolín 2006(Early-Middle Pleistocene of Argentina) –Dafila?
- †Anas elapsum(Chinchilla Late Pleistocene of Condamine River, Australia) ( "Nettion" )
- †Anas ganii(Late Pliocene/Early Pleistocene of Tchichmiknaia, Moldavia)
- †Anas gracilipes(Late Pleistocene of Australia) (likely junior synonym ofAnas castanea)
- †Anas greeni(Brodkorb 1964)(Ash Hollow Late Miocene?/Early Pliocene of South Dakota, USA) –Nettionred-and-green head clade (doubtful)?
- †Anas itchtuckneeMcCoy 1963
- †Anas kisatibiensis[Anser kisatibiensis] (Early Pliocene of Kisatibi, Georgia)
- †Anas kurochkiniZelenkov & Panteleyev 2015
- †Anas lambrechti[Archaeoquerquedula lambrechtiStephens;Querquedula lambrechti;ArcheoquerquedulaSpillman 1942]
- †Anas ogallalae(Brodkorb 1962)(Ogallala Late Miocene?/Early Pliocene of Kansas, USA) –Nettionred-and-green head clade (doubtful)?[9]
- Bermuda Islands flightless duck†Anas pachyscelusWetmore 1960(Shore Hills Late Pleistocene of Bermuda, W Atlantic)
- †Anas pullulans(Juntura Late Miocene?/Early Pliocene ofJuntura,Malheur County,Oregon,USA) –Punanetta?
- †Anas schneideriEmslie 1985(Late Pleistocene of Little Box Elder Cave, USA)[10]
- †Anas sansaniensisMilne-Edwards 1868[Dendrocygna sansaniensis(Milne-Edwards 1868) Mlíkovský 1988]
- †Anas strenuum(Late Pleistocene of Patteramordu, Australia) ( "Nettion" )
Several prehistoric waterfowl supposedly part of theAnasassemblage are nowadays not placed in this genus anymore, at least not with certainty:
- †"Anas" basaltica(Late Oligocene of "Warnsdorf", Czech Republic) is apparently an indeterminateheron.[11]
- †"Anas" blanchardi,"A." consobrina,"A." natatorare now inMionetta
- †"Anas" creccoides(Early-mid Oligocene of Belgium),"A." risgoviensis(Late Miocene of Bavaria, Germany) and"A." skalicensis(Early Miocene of "Skalitz", Czech Republic), though possibly anseriform, cannot be placed with any certainty among modern birds at all.[11][12]
- †"Anas" albae(Late Miocene of Polgárdi, Hungary),"A." eppelsheimensis(Early Pliocene of Eppelsheim, Germany),[8]"A." isarensis(Late Miocene of Aumeister, Germany) and"A." luederitzensis(Kalahari Early Miocene of Lüderitzbucht, Namibia) are apparentlyAnatidaeof unclear affiliations; the first might be aseaduck.[11]
- †"Anas" integraand"A." oligocaenaare now inDendrochen.
- †"Anas" lignitifilafrom the Late Miocene ofTuscanahas been moved to its own genus,Bambolinetta,being a highly unusual marine waterfowl.
- †"Anas" robustais now tentatively placed inAnserobranta.
- †"Anas" velox(Middle – Late? Miocene of C Europe) and"A." meyerii(Middle Miocene of Öhningen, Germany; possibly the same species) do not seem to belongAnas,and they may be ancestral dabbling ducks.[11]
Highly problematic, albeit in a theoretical sense, is the placement of themoa-nalos.These may be descended from a common ancestor of dabbling ducks such as thePacific black duck,Laysan duck,andmallard.Phylogenetically, they may even form acladewithin the traditional genusAnas.[13]However, when compared to these species – which are representative of dabbling ducks in general – the moa-nalos are a radical departure from the Anseriformebauplan.This illustrates that in a truly evolutionary sense, a strictlyphylogenetic taxonomymay be difficult to apply.[citation needed]
See also
editReferences
edit- ^"Anatidae".aviansystematics.org.The Trust for Avian Systematics.Archivedfrom the original on 2023-08-11.Retrieved2023-08-05.
- ^abcGonzalez, J.; Düttmann, H.; Wink, M. (2009). "Phylogenetic relationships based on two mitochondrial genes and hybridization patterns in Anatidae".Journal of Zoology.279(3):310–318.doi:10.1111/j.1469-7998.2009.00622.x.
- ^Linnaeus, C.(1758).Systema Naturæ per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Volume 1(in Latin). Vol. 1 (10th ed.). Holmiae:Laurentii Salvii. p. 122.Archivedfrom the original on 2017-07-31.Retrieved2018-02-21.
- ^Mayr, Ernst;Cottrell, G. William, eds. (1979).Check-list of Birds of the World.Vol. 1 (2nd ed.). Cambridge, Massachusetts: Museum of Comparative Zoology. p. 460.Archivedfrom the original on 2022-03-16.Retrieved2018-02-21.
- ^Jobling, James A. (2010).The Helm Dictionary of Scientific Bird Names.London: Christopher Helm. p. 46.ISBN978-1-4081-2501-4.
- ^abGill, Frank;Donsker, David, eds. (2017)."Screamers, ducks, geese & swans".World Bird List Version 7.3.International Ornithologists' Union.Archivedfrom the original on 1 October 2017.Retrieved24 July2017.
- ^Bernor, R.L.; Kordos, L.; Rook, L."Recent Advances on Multidisciplinary Research at Rudabánya, Late Miocene (MN9), Hungary: A compendium"(PDF).Paleontographica Italiana.89:3–36. Archived fromthe original(PDF)on 2007-06-28.
- ^abBrodkorb, Pierce (1958)."Birds From the Middle Pliocene of Mckay, Oregon".Condor.60(4):252–255.doi:10.2307/1365194.JSTOR1365194.
- ^Wilson, R. L. (1968). "Systematics and faunal analysis of a Lower Pliocene vertebrate assemblage from Trego County, Kansas".Contrib. Mus. Paleontol. Univ. Mich.22(7):75–126.
- ^Emslie, Steven D. (1985)."A New Species of Teal From the Pleistocene (Rancholabrean) of Wyoming".Auk.102(1):201–205.doi:10.2307/4086849.JSTOR4086849.Archivedfrom the original on 2014-10-30.Retrieved2014-10-30.
- ^abcdWorthy, T. H.; Tennyson, A. J. D.; Jones, C.; McNamara, J. A.; Douglas, B. J. (2007)."Miocene waterfowl and other birds from central Otago, New Zealand"(PDF).J. Syst. Palaeontol.5(1):1–39.Bibcode:2007JSPal...5....1W.doi:10.1017/S1477201906001957.hdl:2440/43360.S2CID85230857.Archived(PDF)from the original on 2022-03-28.Retrieved2019-09-24.
- ^Brodkorb, Pierce (1962)."The Systematic Position of Two Oligocene Birds From Belgium".Auk.79(4):706–707.doi:10.2307/4082652.JSTOR4082652.Archivedfrom the original on 2020-09-24.Retrieved2014-10-30.
- ^Sorenson, M. D.; Cooper, A.; Paxinos, E. E.; Quinn, T. W.; James, H. F.; Olson, S. L.; Fleischer, R. C. (1999)."Relationships of the extinct moa-nalos, flightless Hawaiian waterfowl, based on ancient DNA".Proceedings: Biological Sciences.266(1434):2187–93.doi:10.1098/rspb.1999.0907.PMC1690346.PMID10649633.
