Bamboo bats
| Bamboo bats | ||||||||||||
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Tylonycteris pachypus , stuffed specimen |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Tylonycteris | ||||||||||||
| Peters , 1872 |
Bamboo bats ( Tylonycteris ) are a species of bat within the smooth-nosed family (Vespertilionidae). The species live in Southeast Asia .
Types and distribution
The following species belong to the genus.
- Tylonycteris fulvida
- Tylonycteris malayana
- Tylonycteris pachypus , from India and southern China to Lombok and western Philippines . An isolated population lives on Ambon .
- Tylonycteris pygmaeus , was scientifically described in 2008. It occurs in the Chinese province of Yunnan .
- Tylonycteris robustula , from Myanmar and South China to Sulawesi and Timor .
- Tylonycteris tonkinensis , from northern Indochina.
features
The species known until 2008 reach a head body length of 30 to 50 mm and a tail length of 24 to 33 mm. With a weight of 3.5 to 5.8 g, Tylonycteris pachypus is significantly smaller than Tylonycteris robustula , which weighs 7.1 to 11.2 g. Tylonycteris pygmaeus is even smaller. The fur and skin on the upper side are reddish brown to dark brown in color, while the underside is lighter. Further characteristics are a flattened skull, large ears in relation to the head and well-developed pads on the thumbs and feet.
Way of life
The German common name refers to the resting places of the bats, which mostly lie in hollowed out bamboo stalks . The manhole and cavity are often created by the beetle species Lasiochila goryi . Tylonycteris robustula occasionally sleeps in crevices. A group of up to 40 or more individuals gathers in the hiding place. Often there is only one adult male per group, which is why polygyne reproduction is assumed. However, the composition of the groups varies greatly. On the Malay Peninsula , groups were recorded in which the ratio of females to males was closer to 2: 1.
Females are 12 to 13 months pregnant. In a given region, all births occur within a month, which is between February and May. A litter usually consists of twins. These are worn by the mother for the first few days. Later they stay alone in hiding until they are completely independent after about 6 weeks. Sexual maturity occurs in the first year of life.
Tree bus bats mainly hunt flying termites .
Individual evidence
- ↑ Don E. Wilson , DeeAnn M. Reeder (Ed.): Mammal Species of the World . A taxonomic and geographic Reference . 3. Edition. 2 volumes. Johns Hopkins University Press, Baltimore MD 2005, ISBN 0-8018-8221-4 (English, Tylonycteris ).
- ↑ Tylonycteris in the IUCN Red List of Threatened Species 2014. Retrieved March 16, 2015.
- ↑ a b c Vuong Tan Tu, Gábor Csorba, Manuel Ruedi , Neil M. Furey, Nguyen Truong Son, Vu Dinh Thong, Céline Bonillo and Alexandre Hassanin. 2017. Comparative Phylogeography of Bamboo Bats of the Genus Tylonycteris (Chiroptera, Vespertilionidae) in Southeast Asia. European Journal of Taxonomy. 274: 1-38. DOI: 10.5852 / ejt.2017.274
- ↑ Feng, Qing, Song Li, Yingxiang Wang, New Species of Bamboo Bat (Chiroptera: Vespertilionidae: Tylonycteris) from Southwestern China . Zoological Science 25 (2): 225-234. 2008. Zoological Society of Japan. doi : 10.2108 / zsj.25.225
- ↑ a b c d Ronald M. Nowak: Walker's Mammals of the World. Volume 1. 6th edition. 1999, pp. 445-446, ISBN 0-8018-5789-9 . ( Bamboo Bats )