Short-eared bat

Short-eared bat
Systematics
Order :	Bats (chiroptera)
Superfamily :	Smooth-nosed (Vespertilionoidea)
Family :	Smooth-nosed (Vespertilionidae)
Subfamily :	Myotinae
Genre :	Mouse ears ( myotis )
Type :	Short-eared bat
Scientific name
	Myotis ikonnikovi
	Ognev , 1912

The short- eared bat or short-eared bearded bat ( Myotis ikonnikovi ) is a species of the mouse ears ( Myotis ) within the bats (Chiroptera). It occurs in parts of East Asia from the People's Republic of China and Russian Siberia via Mongolia to the Korean peninsula and Japan .

features

The short-eared bat is a very small species of bat. It reaches a head-torso length of 36 to 52 millimeters and a tail length of 30 to 38 millimeters. The hind feet are 7 to 9 millimeters long. The ears measure 11 to 13 millimeters, they are comparatively small and when folded out do not reach the tip of the snout of the animals. The back fur is dark brown, the belly side is brown. The forearm length is 30 to 36 millimeters, the calcar is keeled and the flight skin attaches to the basal parts of the toes. The tail fly skin (Uropatagium) has no comb-like border at the rear end.

The skull reaches a total length of about 12.7 millimeters. The snout region is pointed. The distance between the eyes is wider than the distance between the two upper canines . The upper premolar P3 is slightly smaller than the P2, it is not offset against the row of teeth.

distribution

Distribution areas of the short-eared bat

The short-eared bat occurs in parts of East Asia from the Altai in Kazakhstan to Lake Baikal , the People's Republic of China and Russian Siberia and Mongolia to the Russian island of Sakhalin , the Korean peninsula and the Japanese islands of Honshū and Hokkaidō . In Mongolia, it is found in the Ikh Hyangan Mountain Range in the north of the country. In northeast China it has been found from Nei Mongol , Heilongjiang , Jilin , Liaoning , Shaanxi and Gansu , but it is unclear whether all of the finds are representatives of this species.

Way of life

Very little information is available about the bats' way of life. The animals live mainly in mountain forests and mountain regions. The rest takes place partly in tree hollows and stone crevices and the animals hibernate in caves and underground hollows. Maternity roosts in houses were documented from Honshū . The bats feed on flying insects, which they usually hunt just above the ground or over bodies of water.

Systematics

The short-eared bat is assigned to the mouse ears (genus Myotis ) as an independent species . The first scientific description comes from the Russian naturalist Sergei Ivanovich Ognjow (short Ognev) from 1912, which it based on individuals from the region around Dalnerechensk area Primorye in Russia described and after the Russian entomologist Nicholas F. Ikonnikov named. The Myotis fujiensis Imaizumi, 1954, Myotis hosonoi Imaizumi, 1954, Myotis ozensis Imaizumi, 1954, and Myotis yesoensis Yoshiyuki, 1984, which are sometimes described as independent species , are regarded as synonyms of the species.

Apart from the nominate form, no subspecies are distinguished within the species .

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, regular occurrence and low risks for the stocks. There are no known potential risks to the entire population of the species, but in Japan it is threatened by the loss of primary forests.

supporting documents

↑ ^a ^b ^c ^d ^e Don E. Wilson: Ikonnikov's Myotis. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, 2008; P. 377, ISBN 978-0-691-09984-2 .
↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Myotis ikonnikovi in the Red List of Threatened Species of the IUCN 2017-3. Posted by: M. Stubbe, J. Ariunbold, V. Buuveibaatar, S. Dorjderem, Ts. Monkhzul, M. Otgonbaatar, M. Tsogbadrakh, 2008. Retrieved January 30, 2018.
^ ^A ^b Don E. Wilson & DeeAnn M. Reeder (eds.): Myotis ikonnikovi in Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed).
^ "Ikonnikov", In: Bo Beolens, Michael Grayson, Michael Watkins: The Eponym Dictionary of Mammals. Johns Hopkins University Press, 2009; P. 203; ISBN 978-0-8018-9304-9 . ( Google Books )

literature

Don E. Wilson: Ikonnikov's Myotis. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, 2008; P. 377, ISBN 978-0-691-09984-2 .

Web links

Commons : Kurohrfledermaus ( Myotis ikonnikovi ) - Collection of images, videos and audio files

Myotis ikonnikovi inthe IUCN 2017-3 Red List of Threatened Species . Posted by: M. Stubbe, J. Ariunbold, V. Buuveibaatar, S. Dorjderem, Ts. Monkhzul, M. Otgonbaatar, M. Tsogbadrakh, 2008. Retrieved January 30, 2018.

[Smith_&_Yan_Xie_2009-1] Don E. Wilson: Ikonnikov's Myotis. In: Andrew T. Smith , Yan Xie: A Guide to the Mammals of China. Princeton University Press, 2008; P. 377, ISBN 978-0-691-09984-2 .

[IUCN-2] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Myotis ikonnikovi in the Red List of Threatened Species of the IUCN 2017-3. Posted by: M. Stubbe, J. Ariunbold, V. Buuveibaatar, S. Dorjderem, Ts. Monkhzul, M. Otgonbaatar, M. Tsogbadrakh, 2008. Retrieved January 30, 2018.

[Wilson_&_Reeder_2005-3] A ^b Don E. Wilson & DeeAnn M. Reeder (eds.): Myotis ikonnikovi in Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed).

[Beolens_et_al._2009-4] "Ikonnikov", In: Bo Beolens, Michael Grayson, Michael Watkins: The Eponym Dictionary of Mammals. Johns Hopkins University Press, 2009; P. 203; ISBN 978-0-8018-9304-9 . ( Google Books )