Tianshan birch mouse
| Tianshan birch mouse | ||||||||||||
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| Sicista tianshanica | ||||||||||||
| ( Salensky , 1903) |
The Tianshan birch mouse ( Sicista tianshanica ) is a rodent from the genus of birch mice ( Sicista ). It occurs in the northwest of the People's Republic of China and in Kazakhstan in the Tian Shan .
features
The Tianshan birch mouse reaches a head-trunk length of 6.7 to 7.3 centimeters and a tail of 9.9 to 11.4 centimeters in length with a weight of about 9 to 14 grams. The rear foot length is 16 to 19 millimeters, the ear length about 11 to 15 millimeters. The back fur is uniformly straw yellow in color, a back stripe in the area of the spine is missing. The sides of the body are a little lighter, the abdomen is pale white-gray with a light straw-yellow tinge. The chin and throat are white. The skull has a total length of 18 to 21 millimeters. It is elongated compared to the steppe birch mouse ( Sicista subtilis ).
distribution
The Tianshan birch mouse occurs in the northwest of the People's Republic of China and in Kazakhstan in the Tian Shan . In China, the distribution area includes parts of the central to southern provinces of Gansu , the east of Qinghai , Shaanxi , Sichuan and Yunnan .
Way of life
The Tianshan birch mouse lives as a mountain species in wooded areas and rocky pastures at altitudes of 2500 to 3000 meters. The animals are mostly nocturnal, but can also appear during the day. They often hide in hollow branches and tree hollows. A litter consists of about three to six young animals.
Systematics
The Tianshan birch mouse is classified as a separate species within the genus of birch mice ( Sicista ), which consists of fourteen species. The first scientific description comes from Salensky from 1903, who described the species using individuals from Qinghai in Tian Shan.
Status, threat and protection
The Tianshan birch vole is listed by the International Union for Conservation of Nature and Natural Resources (IUCN) as not endangered (least concern). This is justified by the comparatively large distribution area and the assumed large and stable stocks. Exact information on the size of the population is not known, but there are also no risks that could endanger the existence of the population.
supporting documents
- ↑ a b c d e Andrew T. Smith: Tianshan Birch Mouse. 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 , pp. 207-208.
- ↑ a b c Sicista tianshanica in the IUCN Red List of Threatened Species 2014.3. Posted by: K. Tsytsulina, 2008. Retrieved December 23, 2015.
- ↑ Sicista tianshanica ( Memento of the original from December 24, 2015 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. . 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 .
literature
- Andrew T. Smith: Tianshan Birch Mouse. 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 , pp. 207-208.
Web links
- Sicista tianshanica inthe IUCN Red List of Threatened Species 2014.3. Posted by: K. Tsytsulina, 2008. Retrieved December 23, 2015.