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Information about Tadorna

Shelducks
Enlarge picture
Female Common Shelduck

Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Aves
Order:Anseriformes
Family:Anatidae
Subfamily:Tadorninae
Genus:Tadorna
Boie, 1822
Species


T. ferruginea
T. cana
T. tadornoides
T. variegata
T. cristata
T. tadorna
T. radjah
Synonyms


see text


The Shelducks, genus Tadorna, are a group of large birds in the Tadorninae subfamily of the Anatidae, the biological family that includes the ducks and most duck-like waterfowl such as the geese and swans.

The shelducks are a group of larger often semi-terrestrial waterfowl, which can be seen as intermediate between geese (Anserinae) and ducks. They are mid-sized (some 50-60 cm) Old World waterfowl. The sexes are colored slightly different in most species, and all have a characteristic upperwing coloration in flight: the tertiary remiges form a green speculum, the secondaries and primaries are black, and the coverts (forewing) are white. Their diet consists of small shore animals (winkles, crabs etc) as well as grasses and other plants.

Systematics

The namesake genus of the Tadorninae, Tadorna is very close to the Egyptian Goose and its extinct relatives from the Madagascar region, Alopochen. While the classical shelducks for a group that is obviously monophyletic, the interrelationships of these, the aberrant Common and especially Radjah Shelducks, and the Egyptian Goose were found to be poorly resolved by mtDNA cytochrome b sequence data (Sraml et al. 1996); this genus may thus be paraphyletic. Fossil bones from Dorkovo (Bulgaria) described as Balcanas pliocaenica may actually belong to this genus. They have even been proposed to be referrable to the Common Shelduck, but their Early Pliocene age makes this rather unlikely.

References

  • 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 (HTML abstract)
T. tadorna

Binomial name
Tadorna tadorna
(Linnaeus, 1758)

Common Shelduck range


Synonyms

see text

The Common Shelduck (
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Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. Scientific classification also can be called scientific taxonomy, but should be distinguished from folk taxonomy, which lacks scientific basis.
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Chordata
Bateson, 1885

Typical Classes

See below

Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates.
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Aves
Linnaeus, 1758

Orders

About two dozen - see section below

Birds (class Aves) are bipedal, warm-blooded, egg-laying vertebrate animals.
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Anseriformes
Wagler, 1831

Families
  • Anhimidae
  • Anseranatidae
  • Anatidae
  • †Dromornithidae
  • †Presbyornithidae
  • †Gastornidae(?)


The order Anseriformes
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Waterbird redirects here. See also shorebirds and seabirds.

Ducks, geese and swans

Black-bellied Whistling Duck (Dendrocygna autumnalis)


Scientific classification
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Tadorninae

Genera

see article text

The Tadorninae is the shelduck-sheldgoose subfamily of the Anatidae, the biological family that includes the ducks and most duck-like waterfowl such as the geese and swans.
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Heinrich Boie (May 4, 1784 - September 4, 1827) was a German zoologist. He was the brother of Friedrich Boie.

Boie studied law at Kiel and Gottingen. At university he became interested in natural history through the lectures of Johann Friedrich Blumenbach and Friedrich
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18th century - 19th century - 20th century
1790s  1800s  1810s  - 1820s -  1830s  1840s  1850s
1819 1820 1821 - 1822 - 1823 1824 1825

:
Subjects:     Archaeology - Architecture -
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In scientific nomenclature, synonyms are different scientific names used for a single taxon. Usage and terminology are different for zoology and botany.

Zoology

In zoological nomenclature, synonyms are different scientific names that pertain to the same taxon, for example
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Tadorninae

Genera

see article text

The Tadorninae is the shelduck-sheldgoose subfamily of the Anatidae, the biological family that includes the ducks and most duck-like waterfowl such as the geese and swans.
..... Click the link for more information.
Waterbird redirects here. See also shorebirds and seabirds.

Ducks, geese and swans

Black-bellied Whistling Duck (Dendrocygna autumnalis)


Scientific classification
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family (Latin: familia, plural familiae) is a rank, or a taxon in that rank. Exact details of formal nomenclature depend on the Nomenclature Code which applies.
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Duck is the common name for a number of species in the Anatidae family of birds. The ducks are divided between several subfamilies listed in full in the Anatidae article. Ducks are mostly aquatic birds, mostly smaller than their relatives the swans and geese, and may be found in
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Goose (plural geese, male gander(s)) is the English name for a considerable number of birds, belonging to the family Anatidae. This family also includes swans, most of which are larger than geese, and ducks, which are smaller.
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Cygnus
Bechstein, 1803

Species

6-7 living, see text.
Synonyms

Cygnanser Kretzoi, 1957

Swans are large water birds of the family Anatidae, which also includes geese and ducks.
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The Old World consists of those parts of Earth known to Europeans, Asians, and Africans in the 15th century before the voyages of Christopher Columbus; it includes Europe, Asia, and Africa (collectively known as Africa-Eurasia), plus surrounding islands.
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flight feather refers to any of the long stiff feathers on the wing or tail of a bird; those on the wing are called remiges (singular remex) while those on the tail are called rectrices (singular rectrix).
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speculum is a patch, often distinctly coloured, on the inner remiges of some birds.

Examples of the colour(s) of the speculum in a number of ducks are:
  • Common Teal: Iridescent green.
  • Green-winged Teal: Iridescent green.
  • Blue-winged Teal: Iridescent blue.

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Littorina littorea

Binomial name
Littorina littorea
(Linnaeus, 1758)

The common periwinkle, Littorina littorea
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Brachyura
Latreille, 1802

Superfamilies
  • Section Dromiacea
  • Homolodromioidea
  • Dromioidea
  • Homoloidea

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Grass is a common word that generally describes a monocotyledonous green plant in the family Gramineae (Poaceae). True grasses include most plants grown as grains, for pasture, and for lawns (turf).
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Alopochen
Stejneger, 1885

Species: A. aegyptiacus

Binomial name
Alopochen aegyptiacus
(Linnaeus, 1766)

Synonyms


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extinction is the cessation of existence of a species or group of taxa, reducing biodiversity. The moment of extinction is generally considered to be the death of the last individual of that species (although the capacity to breed and recover may have been lost before this point).
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Motto
Tanindrazana, Fahafahana, Fandrosoana   (Malagasy)
Patrie, liberté, progrès   (French)
"Ancestral-land, Liberty, Progress"
Anthem

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In phylogenetics, a group is monophyletic (Greek: "of one race") if it consists of an inferred common ancestor and all its descendants. A taxonomic group that contains organisms but not their common ancestor is called polyphyletic, and a group that contains some but not all
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Mitochondrial DNA (mtDNA) is the DNA located in organelles called mitochondria. Most other DNA present in eukaryotic organisms is found in the cell nucleus. Nuclear and mitochondrial DNA are thought to be of separate evolutionary origin, with the mtDNA being derived from the
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The coenzyme Q : cytochrome c — oxidoreductase, sometimes called the cytochrome bc1 complex, and at other times complex III, is the third complex in the electron transport chain (EC 1.10.2.
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DNA sequence or genetic sequence is a succession of letters representing the primary structure of a real or hypothetical DNA molecule or strand, with the capacity to carry information.
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This article is copied from an article on Wikipedia.org - the free encyclopedia created and edited by online user community. The text was not checked or edited by anyone on our staff. Although the vast majority of the wikipedia encyclopedia articles provide accurate and timely information please do not assume the accuracy of any particular article. This article is distributed under the terms of GNU Free Documentation License.
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