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Viscacha Rat (other)
Viscacha rats are a group of rodents in the family Octodontidae. All species are found in Argentina. They are placed in the following genera: *Genus ''Octomys'' ** ''O. mimax '', mountain viscacha rat, found in the Andes *Genus ''Pipanacoctomys'' ** ''P. aureus'', the golden viscacha rat, found near a salt flat *Genus '' Tympanoctomys'' (4 species, 3 extant), found in desert shrubland near salt flats ** ''T. barrerae'', the plains viscacha rat ** ''T. kirchnerorum'', Kirchner's viscacha rat Kirchner's viscacha rat or Kirchner's vizcacha rat (''Tympanoctomys kirchnerorum'') is a species of rodent in the family Octodontidae described in 2014. It is one of two species in the genus ''Tympanoctomys''. That species is endemic to Chubut Pr ..., ** ''T. loschalchalerosorum'', the Chalchalero viscacha rat ** †'' T. cordubensis'' {{disambiguation Rodents Animal common name disambiguation pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodent
Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are native to all major land masses except for New Zealand, Antarctica, and several oceanic islands, though they have subsequently been introduced to most of these land masses by human activity. Rodents are extremely diverse in their ecology and lifestyles and can be found in almost every terrestrial habitat, including human-made environments. Species can be arboreal, fossorial (burrowing), saltatorial/richochetal (leaping on their hind legs), or semiaquatic. However, all rodents share several morphological features, including having only a single upper and lower pair of ever-growing incisors. Well-known rodents include mice, rats, squirrels, prairie dogs, porcupines, beavers, guinea pigs, and hamsters. Rabbits, hares, and pikas, whose i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octodontidae
Octodontidae is a family of rodents, restricted to southwestern South America. Fourteen species of octodontid are recognised, arranged in seven genera. The best known species is the common degu, ''Octodon degus''. Octodontids are medium-sized rodents, ranging from in body length. They have long, silky, fur, which is typically brownish in color, and often paler on the underside. The name 'octodont' derives from the wear pattern of their teeth, which resembles a figure 8. Most are nocturnal, social, burrowing animals, though the degu is largely diurnal. They are herbivorous, eating tubers, bulbs, and cactuses. Some authors have suggested that the octodontids should be reclassified in the order Lagomorpha, but this has not been supported by further analyses. Older literature includes the tuco-tucos in the family, as the subfamily Ctenomyinae, but these animals are normally now treated as a separate family, Ctenomyidae. There is some evidence that evolution within the family ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Viscacha Rat
The mountain viscacha rat or mountain vizcacha rat (''Octomys mimax''), historically viscacha rat or vizcacha rat, is a species of rodent in the family Octodontidae. It is endemic to Argentina. It is the only living species within the genus ''Octomys''. This diploid genus (2n = 56) may be ancestral to the two unusual suspected tetraploid species ''Tympanoctomys barrerae'' and ''Pipanacoctomys aureus''. However, some genetic studies have rejected any polyploidism in mammals as unlikely, and suggests that ''amplification and dispersion of repetitive sequences best explain the large genome size''. Description The mountain viscacha rat is a rat-like animal with a head-body length of about and weighing from . The feet are relatively long, while the tail measures . It has light brown fur with white underparts and a bushy tail. Unusual features of the viscacha rat include greatly enlarged auditory bullae, and the presence of numerous whiskers on the roof of the mouth behind the in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Golden Viscacha Rat
The golden viscacha rat or golden vizcacha rat (''Pipanacoctomys aureus'') is the single species of the genus ''Pipanacoctomys'' of the rodent family Octodontidae. It has 92 chromosomes and has been regarded as tetraploid ( 4x = 2n).Gallardo, M. H. ''et al.'' (2004).Whole-genome duplications in South American desert rodents (Octodontidae). ''Biological Journal of the Linnean Society, 82'', 443-451. This octodontid and its sister-species, the plains viscacha rat (''Tympanoctomys barrerae'') (2n = 102), may have arisen from the diploid mountain viscacha rat (''Octomys mimax''), (2x = 2n = 56) as a result of the doubling and subsequent loss of some chromosomes. However, some genetic studies have rejected any polyploidism in mammals as unlikely, and suggest that amplification and dispersion of repetitive sequences best explain the large genome size. Description The golden viscacha rat grows to a head-and-body length of about with a tufted tail of about . The dorsal fur is golden-bl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tympanoctomys
''Tympanoctomys'' is a genus of rodent in the family Octodontidae. There are three extant species in the genus: '' T. barrerae'', '' T. kirchnerorum'' and '' T. loschalchalerosorum''. ''T. loschalchalerosorum'' was formerly considered to be monotypic within the genus ''Salinoctomys'', but has been shown by genetic analysis to nest within the variation of ''T. barrerae''. All species are endemic to central western Argentina, where the genus has a fragmented range. Their natural habitat is desert scrubland, dunes and salt flats, where they eat halophyte plants. They are solitary, nocturnal Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed sens ... rodents that construct large mounds with complex burrows. References {{Taxonbar, from=Q12268441 Mammals of Argentina Endemic fauna of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plains Viscacha Rat
The plains viscacha rat, plains vizcacha rat, red viscacha rat, or red vizcacha rat (''Tympanoctomys barrerae'') is a species of rodent in the family Octodontidae native to Argentina. It is one of three species in the genus '' Tympanoctomys''. Description The plains viscacha rat is a moderately-sized rat, with a large head, long tail, and short ears. Adults measure about in total length, with a tail, and weigh an average of , with males being slightly larger than females. The rat has buff-yellow fur with white underparts, fading to dark brown at the tip of the tail. Distribution and habitat The plains viscacha rat is endemic to central western Argentina, where it has a fragmented range in Mendoza Province and western La Pampa. Its natural habitat is desert scrubland, dunes and salt flats, between . There are no recognised subspecies. The species is threatened by destruction of its fragmented and restricted habitat. Biology and behaviour Plains viscacha rats are solitary, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kirchner's Viscacha Rat
Kirchner's viscacha rat or Kirchner's vizcacha rat (''Tympanoctomys kirchnerorum'') is a species of rodent in the family Octodontidae described in 2014. It is one of two species in the genus ''Tympanoctomys''. That species is endemic to Chubut Province in the central western Argentina, where it has a fragmented range. Its natural habitat is desert scrubland, dunes and salt flats, where it eats halophyte plants. It is a solitary, nocturnal rodent that constructs large mounds with complex burrows. The species was named in honor of both Cristina Fernández de Kirchner and Néstor Kirchner Néstor Carlos Kirchner (; 25 February 195027 October 2010) was an Argentine lawyer and politician who served as the President of Argentina from 2003 to 2007, Governor of Santa Cruz Province from 1991 to 2003, Secretary General of UNASUR and ..., presidents of Argentina. References {{Taxonbar, from=Q16064168 Tympanoctomys Mammals of Argentina Mammals described in 2014 Endemic fau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chalchalero Viscacha Rat
The Chalchalero viscacha rat or Chalchalero vizcacha rat (''Tympanoctomys loschalchalerosorum'') is a species of caviomorph rodent in the family Octodontidae. It was formerly considered to be monotypic within the genus ''Salinoctomys'', but has been shown by genetic analysis to nest within '' Tympanoctomys'', and in particular, within the variation of '' T. barrerae''. The species is endemic to a small area of northwestern Argentina, where it lives in shrublands bordering the salt flats of the Salinas Grandes. Its diet consists of halophyte plants. It is named after an Argentine musical group, Los Chalchaleros Los Chalchaleros were an Argentine musical folkloric ensemble consisting of four men, and one of the most famous folk singers in the history of Latin America. The group was established in 1948 in the northern province of Salta. It was named after ..., whose songs were popular with its discoverers. Description The Chalchalero viscacha rat is a medium-sized species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tympanoctomys Cordubensis
''Tympanoctomys'' is a genus of rodent in the family Octodontidae. There are three extant species in the genus: '' T. barrerae'', '' T. kirchnerorum'' and '' T. loschalchalerosorum''. ''T. loschalchalerosorum'' was formerly considered to be monotypic within the genus ''Salinoctomys'', but has been shown by genetic analysis to nest within the variation of ''T. barrerae''. All species are endemic to central western Argentina, where the genus has a fragmented range. Their natural habitat is desert scrubland, dunes and salt flats, where they eat halophyte plants. They are solitary, nocturnal Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed sens ... rodents that construct large mounds with complex burrows. References {{Taxonbar, from=Q12268441 Mammals of Argentina Endemic fauna of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodents
Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are native to all major land masses except for New Zealand, Antarctica, and several oceanic islands, though they have subsequently been introduced to most of these land masses by human activity. Rodents are extremely diverse in their ecology and lifestyles and can be found in almost every terrestrial habitat, including human-made environments. Species can be arboreal, fossorial (burrowing), saltatorial/richochetal (leaping on their hind legs), or semiaquatic. However, all rodents share several morphological features, including having only a single upper and lower pair of ever-growing incisors. Well-known rodents include mice, rats, squirrels, prairie dogs, porcupines, beavers, guinea pigs, and hamsters. Rabbits, hares, and pikas, whose incisors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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