Yulungshan bank vole

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Yulungshan bank vole
Systematics
Superfamily : Mice-like (Muroidea)
Family : Burrowers (Cricetidae)
Subfamily : Voles (arvicolinae)
Tribe : Myodini
Genre : Père david voles ( Eothenomys )
Type : Yulungshan bank vole
Scientific name
Eothenomys proditor
Hinton , 1923

The Yulungshan bank vole or Yulungshan red-backed vole ( Eothenomys proditor ) is a rodent species from the subfamily of voles (Arvicolinae). It occurs only in the border region between Yunnan and Sichuan in southern China .

features

The Yulungshan bank vole is the smallest species of the genus and reaches a head-trunk length of 10.5 to 11.5 centimeters with a tail of 2.6 to 3.4 centimeters in length . The rear foot length is 17 to 20 millimeters, the ear length 12 to 13 millimeters. It is a relatively large species in the Eothenomys chinensis species complex and morphologically resembles the smaller black-eared bank vole ( Eothenomys olitor ). The back fur is dark brown and reddish-brown in the trunk area and merges into the slate gray peritoneum over the flanks. The tail is dark brown on top, pale brown on the underside. An important distinguishing feature from other species of the genus is the expression of the enamel folds on molar M2, which has only two folds on the tongue side of the tooth. The genome consists of a diploid chromosome set of 2n = 32 chromosomes.

distribution

The Yulungshan bank vole occurs only in the border region between Yunnan and Sichuan in southern China .

Way of life

Almost no information is available about the way of life of the species. The Yulungshan bank vole lives in mountain regions at altitudes of 2500 to 4200 meters in the area of ​​mountain meadows and rocky habitats. The breeding season extends from spring to autumn.

Systematics

The Yulungshan bank vole is classified as a separate species within the genus Eothenomys , which consists of eight species. The first scientific description comes from the British zoologist Martin Alister Campbell Hinton , who described the species in 1923 using individuals from the area around Lijiang in Yunnan. The species was assigned to the genus or subgenus Anteliomys or the subgenus Caryomys , but is now classified in the Eothenomys chinensis species complex within the genus Eothenomys .

Status, threat and protection

The Yulungshan bank vole is classified as Least Concern by the International Union for Conservation of Nature and Natural Resources (IUCN). This is justified with the relatively large distribution area of ​​more than 20,000 km² and the assumed large populations of the species that also occur in protected areas. Potential endangerment risks for the species are not known.

supporting documents

  1. ↑ a b c Darrin Lunde, Andrew T. Smith: Yulong Chinese Vole. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, Princeton NJ 2008, ISBN 978-0-691-09984-2 , p. 225.
  2. ↑ a b c Eothenomys proditor . In: Don E. Wilson , DeeAnn M. Reeder (Eds.): Mammal Species of the World. A taxonomic and geographic Reference. 2 volumes. 3. Edition. Johns Hopkins University Press, Baltimore MD 2005, ISBN 0-8018-8221-4 .
  3. ↑ a b c d Eothenomys proditor in the IUCN Red List of Threatened Species 2016.2. Listed by: AT Smith, CH Johnston, 2008. Retrieved October 22, 2016.

literature

  • Darrin Lunde, Andrew T. Smith: Yulong Chinese Vole. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, Princeton NJ 2008, ISBN 978-0-691-09984-2 , p. 225.

Web links