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Syrmaticus
__NOTOC__ The genus ''Syrmaticus'' contains the five species of long-tailed pheasants. The males have short spurs and usually red facial wattles, but otherwise differ wildly in appearance. The hens (females) and chicks of all the species have a rather conservative and plesiomorphic drab brown color pattern.Zhan & Zhang (2005) 5 species are generally accepted in this genus. Systematics and taxonomy The genus is occasionally included in ''Phasianus'' based on DNA sequence data, but this does not seem well warranted; the molecular evolution in this genus has been unusual and can easily mislead molecular phylogenetic studies and makes molecular clocks unreliable. At least in the cytochrome ''b'' sequence transitions have outnumbered transversions to an extent rarely seen in other birds. Transition-transversion frequencies in mtDNA control region are by contrast more like those usually seen in birds, but this region of the mitochondrial genome has been evolving unusually slowly i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syrmaticus Reevesii
Reeves's pheasant (''Syrmaticus reevesii'') is a large pheasant within the genus ''Syrmaticus''. It is endemic to China. It is named after the British naturalist John Reeves, who first introduced live specimens to Europe in 1831. Description Males measure long and weigh . The male is brightly plumaged with a scaled golden white and red body plumage, grey legs, brown iris and bare red skin around the eye. The head is white with a black narrow band across its eyes. The male has an extremely long silvery white tail barred with chestnut brown. This pheasant is mentioned in the 2008 edition of ''Guinness World Records'' for having the longest natural tail feather of any bird species; a record formerly held by the crested argus pheasant. The tail can measure up to long. Females measure long and weigh . They are brown with a blackish crown, a buff face and greyish brown barred tail feathers. The females are about the same size as a male common pheasant. There are no known subspe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reeves's Pheasant
Reeves's pheasant (''Syrmaticus reevesii'') is a large pheasant within the genus ''Syrmaticus''. It is endemic to China. It is named after the British naturalist John Reeves, who first introduced live specimens to Europe in 1831. Description Males measure long and weigh . The male is brightly plumaged with a scaled golden white and red body plumage, grey legs, brown iris and bare red skin around the eye. The head is white with a black narrow band across its eyes. The male has an extremely long silvery white tail barred with chestnut brown. This pheasant is mentioned in the 2008 edition of ''Guinness World Records'' for having the longest natural tail feather of any bird species; a record formerly held by the crested argus pheasant. The tail can measure up to long. Females measure long and weigh . They are brown with a blackish crown, a buff face and greyish brown barred tail feathers. The females are about the same size as a male common pheasant. There are no known subspe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elliot's Pheasant
Elliot's pheasant (''Syrmaticus ellioti''), is a large pheasant native to south-eastern China. Description Males are up to long; they are brown and white with a black throat, chestnut-brown upper parts, white belly, nape and wing bars, red bare facial skin and long rusty-barred whitish tail. Females are smaller, at long; they are rufous brown with a blackish throat, whitish belly and less barred tail. Distribution Elliot's pheasant is endemic to south-eastern China (Guizhou, Hubei, Anhui, Zhejiang, Fujian, Jiangxi, Hunan, Guangxi and Guangdong provinces), where it lives in evergreen and mountain forests at altitudes of . Its diet consists mainly of seeds, leaves and berries. Taxonomy Elliot's pheasant was first described in 1872 by Robert Swinhoe, under the name "''Phasianus ellioti''"; the type material was from Ningpo, Zhejiang province, China. The specific epithet ' commemorates the American ornithologist Daniel Giraud Elliot; Swinhoe explained his choice thus: :"Possesse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper Pheasant
The copper pheasant or Soemmerring's pheasant (''Syrmaticus soemmerringii'') is endemism, endemic to Japan. The scientific name commemorates the Germany, German scientist Samuel Thomas von Sömmerring. Description It is a large pheasant with a rich coppery chestnut plumage, yellowish Beak, bill, brown Iris (anatomy), iris and red facial skin. The female is a brown bird with greyish brown upperparts and buff barred dark brown below. The male has short spurs on its grey legs, while the female has none. He measures 87.5–136 cm (34.5–54 in) long including the tail, while the female measures 51–54 cm (20–21 in) (subspecies scintillating copper pheasant, ''scintillans'') including the tail.''Handbook of the Birds of the World'', Volume 2, Lynx Edicions, Barcelona Distribution and habitat The copper pheasant is distributed in and Endemism in birds, endemic to the hill and mountain forests of Honshū, Kyūshū and Shikoku islands of Japan, where it is known ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mikado Pheasant
The Mikado pheasant (''Syrmaticus mikado'') is a gamebird in the pheasant family Phasianidae of the order Galliformes, gallinaceous birds. Sometimes considered an unofficial ''national bird'' of Taiwan (along with the Swinhoe's pheasant and Taiwan blue magpie), a pair of Mikado pheasants and Yushan National Park, one of the areas it is known to inhabit, is depicted in the 1000 dollar bill of the New Taiwan dollar. Distribution and habitat The Mikado pheasant is endemic to mountainous regions of Taiwan. The species occupies dense shrubs, bamboo growth and grassy terrain with conifer overstory in central and southern Taiwan, from 2000 to 3200 meters above sea level. Description With the tail included, males of this species get to be up to 70 cm in body length, while the smaller females measure up to 47 cm. The male is dark with plumage that refracts with blue or violet iridescence, with white stripes on its wings and tail. The female is brown and speckled with brown and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Georg Wagler
Johann Georg Wagler (28 March 1800 – 23 August 1832) was a German herpetologist and ornithologist. Wagler was assistant to Johann Baptist von Spix, and gave lectures in zoology at the Ludwig Maximilian University of Munich after it was moved to Munich. He worked on the extensive collections brought back from Brazil by Spix, and published partly together with him books on reptiles from Brazil. Wagler wrote ''Monographia Psittacorum'' (1832), which included the correct naming of the blue macaws. In 1832, Wagler died of an accidental self-inflicted gunshot wound while out collecting in München-Moosach. Life Johann Georg Wagler was a German naturalist and scientist in the 19th century, whose works primarily focused on herpetology and ornithology (Beolens, Watkins & Grayson, 2011). Johan Georg Wagler was born on the 28th of March 1800, in the city of Nuremberg, where the Chancellor of the City Court was Wagler's father (Wagler, 1884). After taking up gymnastics at Nuremberg, J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylogeny
A phylogenetic tree (also phylogeny or evolutionary tree Felsenstein J. (2004). ''Inferring Phylogenies'' Sinauer Associates: Sunderland, MA.) is a branching diagram or a tree showing the evolutionary relationships among various biological species or other entities based upon similarities and differences in their physical or genetic characteristics. All life on Earth is part of a single phylogenetic tree, indicating common ancestry. In a ''rooted'' phylogenetic tree, each node with descendants represents the inferred most recent common ancestor of those descendants, and the edge lengths in some trees may be interpreted as time estimates. Each node is called a taxonomic unit. Internal nodes are generally called hypothetical taxonomic units, as they cannot be directly observed. Trees are useful in fields of biology such as bioinformatics, systematics, and phylogenetics. ''Unrooted'' trees illustrate only the relatedness of the leaf nodes and do not require the ancestral root to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the bee hummingbird to the ostrich. There are about ten thousand living species, more than half of which are passerine, or "perching" birds. Birds have whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MtDNA
Mitochondrial DNA (mtDNA or mDNA) is the DNA located in mitochondria, cellular organelles within eukaryotic cells that convert chemical energy from food into a form that cells can use, such as adenosine triphosphate (ATP). Mitochondrial DNA is only a small portion of the DNA in a eukaryotic cell; most of the DNA can be found in the cell nucleus and, in plants and algae, also in plastids such as chloroplasts. Human mitochondrial DNA was the first significant part of the human genome to be sequenced. This sequencing revealed that the human mtDNA includes 16,569 base pairs and encodes 13 proteins. Since animal mtDNA evolves faster than nuclear genetic markers, it represents a mainstay of phylogenetics and evolutionary biology. It also permits an examination of the relatedness of populations, and so has become important in anthropology and biogeography. Origin Nuclear and mitochondrial DNA are thought to be of separate evolutionary origin, with the mtDNA being derived from t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MtDNA Control Region
The mtDNA control region is an area of the mitochondrial genome which is non-coding DNA. This region controls RNA and DNA synthesis. It is the most polymorphic region of the human mtDNA genome, with polymorphism concentrated in hypervariable regions. The average nucleotide diversity in these regions is 1.7%. Despite this variability, an RNA transcript from this region has a conserved secondary structure (''pictured'') which has been found to be under selective pressure. The mtDNA control region contains the origin of replication of one strand, and the origin of transcription for both strands. There is also an open reading frame thought to code for 7s ribosomal RNA in humans but not in mice or cows, where it has been deleted. Distinction from D-loop The control region and mtDNA D-loop are sometimes used synonymously in the literature; specifically the control region includes the D-loop along with adjacent transcription promoter regions. For this reason, the control region ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sister Species
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and taxon B are sister groups to each other. Taxa A and B, together with any other extant or extinct descendants of their most recent common ancestor (MRCA), form a monophyletic group, the clade AB. Clade AB and taxon C are also sister groups. Taxa A, B, and C, together with all other descendants of their MRCA form the clade ABC. The whole clade ABC is itself a subtree of a larger tree which offers yet more sister group relationships, both among the leaves and among larger, more deeply rooted clades. The tree structure shown connects through its root to the rest of the universal tree of life. In cladistic standards, taxa A, B, and C may represent specimens, species, genera, or any other taxonomic units. If A and B are at the same taxonomic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eumelanin
Melanin (; from el, μέλας, melas, black, dark) is a broad term for a group of natural pigments found in most organisms. Eumelanin is produced through a multistage chemical process known as melanogenesis, where the oxidation of the amino acid tyrosine is followed by polymerization. The melanin pigments are produced in a specialized group of cells known as melanocytes. Functionally, eumelanin serves as protection against UV radiation. There are five basic types of melanin: eumelanin, pheomelanin, neuromelanin, allomelanin and pyomelanin. The most common type is eumelanin, of which there are two types— brown eumelanin and black eumelanin. Pheomelanin, which is produced when melanocytes are malfunctioning due to derivation of the gene to its recessive format is a cysteine-derivative that contains poly benzothiazine portions that are largely responsible for the of red yellow tint given to some skin or hair colors. Neuromelanin is found in the brain. Research has been u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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