Taiga vole | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Rodentia |
Family: | Cricetidae |
Subfamily: | Arvicolinae |
Genus: | Microtus |
Subgenus: | Pitymys |
Species: | M. xanthognathus |
Binomial name | |
Microtus xanthognathus (Leach, 1815) | |
The taiga vole (Microtus xanthognathus) is a large vole found in northwestern North America, including Alaska and northwestern Canada. The name "taiga vole" comes from its living in the boreal taiga zone. [2] It is also sometimes called the yellow-cheeked vole or chestnut-cheeked vole because of the rusty-yellow color on its face around its vibrisae (whiskers); The taiga voles derive their name from these features: "xantho" is Greek for yellow and "gnathus" is Greek for jaw. [2] It is typically much larger than most other North American voles, especially those from the genus Microtus. [2]
An adult taiga vole, excluding tail length, usually ranges from 186–226 mm (7.3–8.9 in) in length and usually weighs 140–170 g (4.9–6.0 oz).
This species is found in northern forests near water or bogs. It makes runways through the surface growth and burrows. It is usually found in colonies. It feeds on grasses, lichens, horsetails and berries. It stores food in its burrows for the winter. Like the singing vole, this animal may give a warning call to alert other members of the colony of danger.
The female vole has litters of 7 to 10 young. The vole population in a given area can vary greatly from year to year.
They are active year-round, usually during dark periods.
Although not commonly encountered, they can be locally abundant.
The taiga vole's habitat stretches from northwestern Canada to Alaska. [3] Fossils have been found as far south as Arkansas, Tennessee and Virginia, suggesting that the taiga voles cover a much smaller range now than in the past. [3] Taiga vole fossils have been found south of where the Laurentide Ice Sheet once was during the late Pleistocene. [4] Fossil evidence suggests that they moved northwest after the Wisconsin glaciation event. [2] The taiga voles are mostly found today in boreal forests and tundra, which provides good evidence as to why fossils have been found so far south. [3] Fossil specimens have been dated back to just before or just after the glacial maximum, when scientist believe that areas of the southern United States would have been covered by the boreal forests and tundra that the taiga vole prefers for habitat. [3]
The taiga voles live a polygynous lifestyle. Males are very territorial and defensive of resources. [2] They typically mate during the North American summers, starting in early May and finishing around September. [2] Each female will typically produce 2 litters per season but the second litter is usually smaller than the first. The taiga vole engages in communal winter nesting. [2] A small group, usually 5-10 individuals, will share a nest during the winter. They will build very extensive burrows that occasionally will even go into the water where they can swim out. [2] Taiga voles living in more dense populations typically have greater body mass than those living in less dense populations. [5] They also exhibit the use of alarm calls, particularly during the mating seasons to warn potential mates of danger. The taiga vole cannot go more than 24 hours without eating or they can starve to death. [6] They do not have complex metabolisms designed for fasting. [6] They can consume all of their liver glycogen in 4 hours or less. They do not use torpor like many other small rodents do, so they must find other ways to slow the basal metabolic rate. [6] They will lower their body temperature by about .5 degrees Celsius to reduce energy costs. The taiga voles, as do many other voles, rely on fat reserves for thermoregulation, using brown fat adipose tissue to increase their thermogenic capacity. [6]
Voles are small rodents that are relatives of lemmings and hamsters, but with a stouter body; a longer, hairy tail; a slightly rounder head; smaller eyes and ears; and differently formed molars. They are sometimes known as meadow mice or field mice in North America.
The eastern meadow vole, sometimes called the field mouse or meadow mouse, is a North American vole found in eastern Canada and the United States. Its range extends farther south along the Atlantic coast.
The North American water vole or just water vole is the largest North American vole. It is found in the northwestern United States and southern parts of western Canada. This animal has been historically considered a member of genus Arvicola, but molecular evidence demonstrates that it is more closely related to North American Microtus species. Water voles are on the USDA Forest Service Region 2 sensitive species list because they maintain very small populations and there is high concern that their required habitat may be declining.
The tundra vole or root vole is a medium-sized vole found in Northern and Central Europe, Asia, and northwestern North America, including Alaska and northwestern Canada. In the western part of the Netherlands, the tundra vole is a relict from the ice age and has developed into the subspecies Alexandromys oeconomus arenicola.
The northern red-backed vole is a small slender vole found in Alaska, northern Canada, Scandinavia and northern Russia.
The singing vole, is a medium-sized vole found in northwestern North America, including Alaska and northwestern Canada.
The rock vole, also known as the yellow-nosed vole, is a medium-sized species of vole found in eastern North America.
The long-tailed vole, in some areas known as the San Bernardino long-tailed vole, is a small vole found in western North America. They have short ears and a long tail. Their fur is gray brown with light gray underparts. They are around 18 cm (7.1 in) long with an 8 cm (3.1 in) tail and weigh about 50 g (1.8 oz).
The genus Phenacomys is a group of North American voles. The genus name comes from the Greek for "imposter mouse."
The western heather vole is a small vole found in western North America. Until recently, the eastern heather vole,, was considered to be a subspecies. They have short ears with stiff orange hair inside and a short thin tail which is paler underneath. Their long soft fur is brownish with silver grey underparts. They are roughly 14 cm (5.5 in) long with a tail length shorter than one-half their body length, approximately 50 mm (2.0 in). They weigh about 40 g (1.4 oz).
The eastern heather vole,, is a small North American vole. Until recently, this species was considered to belong to the same species as the western heather vole, Phenacomys intermedius. It is also called the Ungava vole.
The woodland vole is a small vole found in eastern North America. It is also known as the pine vole.
The prairie vole is a small vole found in central North America.
The steppe polecat, also known as the white or masked polecat, is a species of mustelid native to Central and Eastern Europe and Central and East Asia.It is listed as Least Concern on the IUCN Red List because of its wide distribution, occurrence in a number of protected areas, and tolerance to some degree of habitat modification. It is generally of a very light yellowish colour, with dark limbs and a dark mask across the face. Compared to its relative, the European polecat, the steppe polecat is larger in size and has a more powerfully built skull.
The Arctic ground squirrel is a species of ground squirrel native to the Arctic and Subarctic of North America and Asia. People in Alaska, particularly around the Aleutians, refer to them as "parka" squirrels, most likely because their pelt is good for the ruff on parkas and for clothing.
The California vole is a type of vole which lives throughout much of California and part of southwestern Oregon. It is also known as the "California meadow mouse", a misnomer as this species is a vole, not a mouse. It averages 172 mm (6.8 in) in length although this length varies greatly between subspecies.
The beach vole or Muskeget vole is a rodent in the family Cricetidae. This close relative of the eastern meadow vole is endemic to the 0.87 km2 Muskeget Island, Massachusetts. Due to its relatively short period of reproductive isolation, there is debate over the beach vole's designation as a subspecies of M. pennsylvanicus.
Cabrera's vole is a species of vole native to Spain and Portugal. It is named for Ángel Cabrera, a mammalogist then working at the Museo Nacional de Ciencias Naturales in Madrid. It is the only living member of the subgenus Iberomys, although two fossil species are also known, including M. brecciensis, the likely direct ancestor of the living species.
The montane vole is a species of vole native to the western United States and Canada.
The Jalapan pine vole is a species of rodent in the family Cricetidae, found only in Mexico. The scientific name quasiater translates as "almost black", while the common name refers to the city of Jalapa, close to where the first specimen was collected.