Asian garden shrew
| Asian garden shrew | ||||||||||||
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Asian garden shrew ( Crocidura shantungensis ) |
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| Crocidura shantungensis | ||||||||||||
| Miller , 1901 |
The Asian garden shrew ( Crocidura shantungensis ) is a species of shrew from the genus of the white-toothed shrew ( Crocidura ). It occurs in East Asia from Siberia , Russia , over large parts of the People's Republic of China and Korea with the island of Jeju-do . The species also lives on the Japanese islands of Tsushima and Kamishima and on Taiwan .
features
With a head-trunk length of about 5.1 to 6.5 centimeters, the Asian garden shrew is one of the smallest shrew species in Eurasia and is about as large as the species Crocidura wuchihensis and Crocidura indochinensis, which only occur on the island of Hainan . The tail reaches a length of 35 to 43 millimeters and is comparatively short with about 70% of the head-trunk length; it is very broad at the base and becomes narrower towards the tip of the tail; it also has numerous feeler bristles. The rear foot has a length of 10 to 13 millimeters. The back fur is dark brown-gray with a slightly grayer belly, about lighter than that of C. wuchihensis .
| 1 | · | 3 | · | 1 | · | 3 | = 28 |
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The skull has a total length of 15.5 to 17 millimeters. Like all species of the genus, the species has one incisor per half in the upper jaw and then three single-pointed teeth, a premolar and three molars . In the lower jaw, however, it has a single canine behind the incisor. In total, the animals have a set of 28 teeth. As with all white-toothed shrews, the tooth roots are not pigmented in contrast to those of the red- toothed shrews.
distribution
The Asian garden shrew occurs in East Asia from Siberia , Russia , over large parts of the People's Republic of China and Korea with the island of Jeju-do . The species also lives on the Japanese islands of Tsushima and Kamishima and on Taiwan . In China, the species has been found in almost all provinces of central to eastern China, i.e. in Heilongjiang , Liaoning , Jilin , Sichuan , Yunnan , Guizhou , Hebei , Shaanxi , Gansu , Qinghai , Beijing , Shandong , Shanxi , Anhui , Zhejiang and Jiangsu .
Way of life
The Asian garden shrew occurs in numerous habitats, with habitats ranging from dry semi-desert and steppe areas in the west to coniferous and deciduous forest areas, and sometimes mountain forests, in the south and in central China. In the south-east, the species is also found in the intensively agricultural area along the Yangtze River . In Japan, the species lives on rivers and in bushes on the edge of agricultural areas and in the hill country. Like all shrews, this species feeds on invertebrates, especially insects. Little is known about reproduction.
Systematics
The Asian garden shrew is classified as an independent species within the genus of the white-toothed shrew ( Crocidura ), which consists of around 170 species. The first scientific description comes from Gerrit Smith Miller from 1901, who described an individual from Shandong Province . This species was temporarily assigned to the species C. suaveolens .
Within the species, in addition to the nominate form Crocidura shantungensis shantungensis , Crocidura shantungensis quelpartis is still partly differentiated as a second subspecies. Crocidura shantungensis quelpartis was also assigned to Crocidura dsinezumi and Crocidura russula . Hoffmann and Lunde, on the other hand, distinguish a total of four subspecies in China alone, in addition to C. s. shantungensis are C. s. hosletti , C. s. orientis and C. s. phaeopus .
Threat and protection
The Asian garden shrew is classified as not endangered (least concern) by the International Union for Conservation of Nature and Natural Resources (IUCN) due to its large distribution area, large populations and non-existent threat to the population.
literature
- Robert S. Hoffmann, Darrin Lunde: Asian Lesser White-toothed Shrew. 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. 301.
Web links
- Crocidura shantungensis inthe IUCN 2013 Red List of Threatened Species . Posted by: H. Temple, 2008. Retrieved January 18, 2014.
supporting documents
- ↑ a b c d e f Robert S. Hoffmann, Darrin Lunde: Asian Lesser White-toothed Shrew. 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. 301.
- ↑ a b c d Crocidura shantungensis in the IUCN Red List of Threatened Species 2013.2. Posted by: H. Temple, 2008. Retrieved January 18, 2014.
- ↑ a b c d Crocidura shantungensis ( Memento of the original from February 3, 2014 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 .
