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Red-backed Vole
Red-backed voles are small, slender voles of the genus ''Clethrionomys'' found in North America, Europe, and Asia. In recent years the genus name was changed to ''Myodes'', however a 2019 paper found that ''Myodes'' was actually a junior synonym for '' Lemmus'', thus making it unusable. As such, ''Clethrionomys'' is re-established as the proper genus name. Red-backed voles inhabit northern forests, tundra and bogs. They feed on shrubs, berries and roots. Most species have reddish brown fur on their back. They have small eyes and ears. Unlike other voles, the molar teeth are rooted in adults. The complete list of species is: * Japanese red-backed vole, ''Clethrionomys andersoni'' *Western red-backed vole, ''Clethrionomys californicus'' * Tien Shan red-backed vole, ''Clethrionomys centralis'' * Southern red-backed vole, ''Clethrionomys gapperi'' * Bank vole, ''Clethrionomys glareolus'' * Imaizumi's red-backed vole, ''Clethrionomys imaizumii'' * Korean red-backed vole, ''Clethrio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Red-backed Vole
The southern red-backed vole or Gapper's red-backed vole (''Myodes gapperi'') is a small slender vole found in Canada and the northern United States. It is closely related to the western red-backed vole (''Myodes californius''), which lives to the south and west of its range and which is less red with a less sharply bicolored tail. Description These voles have short slender bodies with a reddish band along the back and a short tail. The sides of the body and head are grey and the underparts are paler. There is a grey color morph in the northeast part of their range. They are long with a 4 cm tailSouthern Red-backed Vole borealforest.org and weigh about 6–42 g; average 20.6 g (0.21–1.48 oz; average 0.72 oz). [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean. Because it is on the North American Plate, North American Tectonic Plate, Greenland is included as a part of North America geographically. North America covers an area of about , about 16.5% of Earth's land area and about 4.8% of its total surface. North America is the third-largest continent by area, following Asia and Africa, and the list of continents and continental subregions by population, fourth by population after Asia, Africa, and Europe. In 2013, its population was estimated at nearly 579 million people in List of sovereign states and dependent territories in North America, 23 independent states, or about 7.5% of the world's population. In Americas (terminology)#Human ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grey Red-backed Vole
The grey red-backed vole or the grey-sided vole (''Myodes rufocanus'') is a species of vole. An adult grey red-backed vole weighs 20-50 grams. This species ranges across northern Eurasia, including northern China, the northern Korean Peninsula, and the islands of Sakhalin and Hokkaidō. It is larger and longer-legged than the northern red-backed vole (''Myodes rutilus''), which covers a similar range and it is also sympatric with the Norwegian lemming (''Lemmus lemmus''). Description The grey red-backed vole has a reddish-coloured back and grey sides. It has a head and body length of and a tail length of . It can be distinguished from the bank vole by its larger size and distinctive reddish back and from the northern red-backed vole by its larger size, longer legs and relatively longer tail. Unlike some other species of vole in the genus '' Myodes'', the molar teeth of adults are rooted in the jaws. Distribution and habitat The grey red-backed vole is native to northern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hokkaido Red-backed Vole
The Hokkaido red-backed vole (''Myodes rex'') is a species of rodent in the family Cricetidae. It is found at high altitudes on the island of Hokkaido in Japan and at lower altitudes on some smaller islands nearby. Its natural habitat is temperate forests. Distribution The Hokkaido red-backed vole occurs in the southwestern part of Hokkaido in the Hidaka Mountains, Daisetsuzan Volcanic Group, Teshio Mountains, and Kitami Mountains, and Shiribeshi Province, Oshima Subprefecture and Hiyama Subprefecture. It is also present at lower altitudes on the islands of Rishiri and Rebun, as well as Shikotan in the Kuril Islands and Shibotsu in the Habomai Islands. It is found in forests and is an adaptable species. Population genetic structuring is rather strong on Hokkaido, with different regions being characterised by different genetic lineages. Status Despite having a total area of occupancy of less than and being considered rare, the Hokkaido red-backed vole is listed as being of "le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean Red-backed Vole
The royal vole (''Myodes regulus''), also called the Korean red-backed vole, is a species of vole endemic to the Korean Peninsula. It lives underground in a burrow, emerging at night to feed on grasses, seeds and other vegetation. The International Union for Conservation of Nature has listed its conservation status as being of "least concern". Taxonomy British zoologist Oldfield Thomas first described the royal vole was in 1907 as ''Craseomys regulus'', the type locality being Mingyong in Korea, south east of Seoul. It was later transferred to the genus '' Myodes'', becoming ''Myodes regulus'', but many authorities believed it was a subspecies of ''Myodes rufocanus''. It has unrooted molar teeth, a characteristic shared by the very similar '' Myodes shanseius'' but not ''M. rufocanus'', and molecular analysis shows that it is a distinct species. Description This vole has a head-and-body length of about with a tail of . An adult royal vole weighs . The ears are large and are co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imaizumi's Red-backed Vole
Imaizumi's red-backed vole (''Myodes imaizumii'') is a species of vole in the family Cricetidae The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskrats, and New World rats and mice. At almost 608 species, it is the second-largest family of mammals, and h .... It is found in Japan and was initially designated as a subspecies of the Japanese red-backed vole, with studies of cranial and molar patterns supporting this. However, genetic tests in the late 1990s provide support for the theory that ''M. imaizumii'' is indeed a separate species, and it is now considered such pending the completion of more detailed studies. References *Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 ''in'' Mammal Species of the World a Taxonomic and Geographic Reference. D. E. Wilson and D. M. Reeder eds. Johns Hopkins University Press, Baltimore. Myodes Mammals described in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bank Vole
The bank vole (''Myodes glareolus'') is a small vole with red-brown fur and some grey patches, with a tail about half as long as its body. A rodent, it lives in woodland areas and is around in length. The bank vole is found in much of Europe and in northwestern Asia. It is native to Great Britain but not to Ireland, where it has been accidentally introduced, and has now colonised much of the south and southwest. The bank vole lives in woodland, hedgerows and other dense vegetation such as bracken and bramble. Its underground chamber is lined with moss, feathers and vegetable fibre and contains a store of food. It can live for eighteen months to two years in the wild and over 42 months in captivity and is mostly herbivorous, eating buds, bark, seeds, nuts, leaves and fruits and occasionally insects and other small invertebrates. It readily climbs into scrub and low branches of trees although it is not as versatile as a mouse. It breeds in shallow burrows, the female rearing about ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tien Shan Red-backed Vole
The Tien Shan red-backed vole (''Myodes centralis'') is a species of rodent in the family Cricetidae. It is found in China and Kyrgyzstan Kyrgyzstan,, pronounced or the Kyrgyz Republic, is a landlocked country in Central Asia. Kyrgyzstan is bordered by Kazakhstan to the north, Uzbekistan to the west, Tajikistan to the south, and the People's Republic of China to the ea .... References *Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 ''in'' Mammal Species of the World a Taxonomic and Geographic Reference. D. E. Wilson and D. M. Reeder eds. Johns Hopkins University Press, Baltimore. Myodes Rodents of China Mammals of Central Asia Mammals described in 1906 Taxonomy articles created by Polbot {{Arvicolinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Red-backed Vole
The western red-backed vole (''Myodes californicus'') is a species of vole in the family Cricetidae. It is found in California and Oregon in the United States and lives mainly in coniferous forest. The body color is chestnut brown, or brown mixed with a considerable quantity of black hair gradually lightening on the sides and grading into a buffy-gray belly, with an indistinct reddish stripe on the back and a bicolored tail about half as long as the head and body. Taxonomy The western red-backed vole was initially described by C. Hart Merriam under its original scientific name ''Evotomys californicus''. The type specimen was obtained at near Eureka, California. It was an adult male collected by Theodore Sherman Palmer on June 3, 1889. Description The length of the western red-backed vole ranges from overall, with a tail between , hindfoot , and ear . The height ranges between 0.75–0.87 inches (18–21 mm). The species is closely related to the southern red-bac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Red-backed Vole
The Japanese red-backed vole, Wakayama red-backed vole, or Anderson's red-backed vole (''Craseomys andersoni'') is a species of rodent in the family Cricetidae. It is found only on the island of Honshu in Japan. It was first described by the British zoologist Oldfield Thomas in 1905. Thomas named it in honor of scientific collector Malcolm Playfair Anderson. The International Union for Conservation of Nature lists it as "least concern". Distribution and habitat The Japanese red-backed vole is endemic to the island of Honshu in Japan and occurs in the Chūbu region, the Hokuriku region and in the more northerly parts of the island, and also in the Kii Peninsula. It is mostly found at altitudes of over but below the alpine zone Alpine tundra is a type of natural region or biome that does not contain trees because it is at high elevation, with an associated harsh climate. As the latitude of a location approaches the poles, the threshold elevation for alpine tundra gets .... It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molar (tooth)
The molars or molar teeth are large, flat teeth at the back of the mouth. They are more developed in mammals. They are used primarily to grind food during chewing. The name ''molar'' derives from Latin, ''molaris dens'', meaning "millstone tooth", from ''mola'', millstone and ''dens'', tooth. Molars show a great deal of diversity in size and shape across mammal groups. The third molar of humans is sometimes vestigial. Human anatomy In humans, the molar teeth have either four or five cusps. Adult humans have 12 molars, in four groups of three at the back of the mouth. The third, rearmost molar in each group is called a wisdom tooth. It is the last tooth to appear, breaking through the front of the gum at about the age of 20, although this varies from individual to individual. Race can also affect the age at which this occurs, with statistical variations between groups. In some cases, it may not even erupt at all. The human mouth contains upper (maxillary) and lower (mandib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tundra
In physical geography, tundra () is a type of biome where tree growth is hindered by frigid temperatures and short growing seasons. The term ''tundra'' comes through Russian (') from the Kildin Sámi word (') meaning "uplands", "treeless mountain tract". There are three regions and associated types of tundra: Arctic tundra, alpine tundra, and Antarctic tundra. Tundra vegetation is composed of dwarf shrubs, sedges, grasses, mosses, and lichens. Scattered trees grow in some tundra regions. The ecotone (or ecological boundary region) between the tundra and the forest is known as the tree line or timberline. The tundra soil is rich in nitrogen and phosphorus. The soil also contains large amounts of biomass and decomposed biomass that has been stored as methane and carbon dioxide in the permafrost, making the tundra soil a carbon sink. As global warming heats the ecosystem and causes soil thawing, the permafrost carbon cycle accelerates and releases much of these soil-contained g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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