Nepali bearded bat
| Nepali bearded bat | ||||||||||||
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| Scientific name | ||||||||||||
| Myotis nipalensis | ||||||||||||
| ( Dobson , 1871) |
The Nepali Bearded Bat ( Myotis nipalensis ) is a species of the mouse ears ( Myotis ) within the bats (Chiroptera). It occurs from Iran over large parts of Asia to Russia and the People's Republic of China .
features
The Nepali bearded bat is a small species of bat. It reaches a head-trunk length of 38 to 47 millimeters and a tail length of 32 to 40 millimeters. The hind feet are 7 to 8 millimeters long. The ears measure 12 to 14 millimeters, they are comparatively small with a long and narrow tragus that is about half the length of the ear. The fur is dark on the back at the base with brown and sometimes reddish-gray hair tips, the belly is also dark at the base with paler gray hair tips. The length of the hind feet is less than half the length of the shins (tibiae). The forearm length is 34 to 37 millimeters, the flight skin attaches to the rear, distal, end of the metatarsal bones .
The skull has a round cranium. The upper premolars are completely in line with the teeth.
distribution
The Nepali bearded bat occurs from Iran and the Caucasus over large parts of Central Asia to India and Nepal as well as Russia and the western to central People's Republic of China . In the Caucasus region, it occurs in northern Turkey , Georgia , Armenia , Azerbaijan and northern Iran in the Caspian Sea area. In Central Asia, the distribution area extends over Turkmenistan , Kazakhstan , Uzbekistan , Tajikistan and Kyrgyzstan . In China, the species has been found in Qinghai , Gansu and Xinjiang . In India it occurs in the states of Himachal Pradesh , Jammu and Kashmir , Meghalaya and West Bengal .
Way of life
The Nepali Bearded Bat lives both in the lowlands and at different altitudes. It occurs in dry areas and mountain regions and lives in mountain forests, scrubland, meadows and in desert areas. In addition, it is documented in urban areas and gardens in South Asia. Their resting places are in crevices, between stones, in buildings, caves and old mines. Like other bats, it feeds on insects, especially butterfly species. They fly out after dusk and hunt their prey close to the ground in fast and winding flight. The species is unlikely to make regular migrations, but populations can abandon their resting places after disturbance. The wintering takes place in underground hiding places. Reproduction takes place once a year, with the females giving birth to a single young.
Systematics
The Nepali bearded bat is assigned to the mouse-eared bat (genus Myotis ) as an independent species . The first scientific description comes from the naturalist George Edward Dobson from 1871, who described it as Vespertilio nipalensis based on individuals from Kathmandu in Nepal . The species was often assigned to the lesser whiskered bat ( Myotis mystacinus ). The species is probably a species complex of several separate species.
Within the species, three subspecies are distinguished with the nominate form :
- Myotis nipalensis nipalensis
- Myotis nipalensis przewalskii
- Myotis nipalensis transcaspicus
Hazard and protection
The species 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 and the assumed large populations. There are no potential threats to the existence of the species as a whole, but in parts of South Asia, like other species, it is affected by habitat loss and disturbance as well as damage to resting places.
supporting documents
- ↑ a b c d e f Don E. Wilson: Nepalese Myotis. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, 2008; P. 379, ISBN 978-0-691-09984-2 .
- ↑ a b c d e f g h Myotis nipalensis in the Red List of Threatened Species of IUCN 2017-3. Posted by: K. Tsytsulina, P. Benda, S. Aulagnier, AM Hutson, S. Molur, C. Srinivasulu, 2016. Retrieved February 2, 2018.
- ^ A b c Don E. Wilson & DeeAnn M. Reeder (eds.): Myotis nipalensis in Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed).
literature
- Don E. Wilson: Nepalese Myotis. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, 2008; P. 379, ISBN 978-0-691-09984-2 .
Web links
- Myotis nipalensis inthe IUCN 2017-3 Red List of Threatened Species . Posted by: K. Tsytsulina, P. Benda, S. Aulagnier, AM Hutson, S. Molur, C. Srinivasulu, 2016. Retrieved February 2, 2018.