Little mouse ear
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Little mouse-eared mouse ( Myotis blythii ) |
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| Myotis blythii | ||||||||||||
| ( Tomes , 1857) |
The little mouse- eared mouse ( Myotis blythii , Syn . : Myotis oxygnathus ) is a bat species from the mouse- eared species , which was first described by Robert Fisher Tomes in 1857 . The scientific species name honors the British zoologist Edward Blyth .
description
The small mouse-eared mouse is very similar to the somewhat larger large mouse-eared mouse . It reaches a head-torso length of 62 to 71 (rarely from 54 or up to 76) millimeters and a weight of 15 to 28 grams. The span is 380 to 400 millimeters, the condylobasal length 17.2 to 18.5 millimeters. The tail is 53 to 59 (maximum 60) millimeters long, the ears 19.8 to 23.5 (maximum 26) millimeters and the forearm 52.5 to 59 (maximum 62.5) millimeters. The ears are narrow and shorter than those of the great mouse-eared mouse. The front edge of the ears is not so curved backwards and the ears are more pointed. The tragus is narrower at the base, lanceolate, and becomes almost half the length of the ear. The outer edge of the ear has 5 to 6 transverse folds. The snout is narrower and more pointed than the large long-eared, which makes it appear longer. The coat is short and the hair base is dark gray. The top is gray with a brownish tint, while the bottom is gray-white. Ears, snout and membranes are light gray-brown. The tragus is light yellowish white. The skin of the arms attaches to the base of the toes. The spur becomes about half as long as the tail skin and has a narrow skin border. Animals found in Switzerland usually have a light spot between their ears. No further anomalies related to the coloring are known.
In a karyological examination of three female animals from Iran , a chromosome number of 2n = 44 was found.
distribution
The distribution area of the lesser mouse-eared mouse includes southern Europe and the Mediterranean area . In the north the species can be found as far as Spain, south-east France, Switzerland, Austria, Slovakia, Hungary, Romania and Moldova. There are only a few finds in Switzerland and Austria.
habitat
The little mouse-eared mouse is found in low-temperature areas in loose trees and bushes, parks, karst areas, but also in localities. The species has been detected at altitudes of 1000 meters.
Way of life
The nurseries are mainly located in warm caves, but attics are also accepted. They include up to 5000 animals. The roosts are often shared with long-winged bats and horseshoe bats, and occasionally with the great mouse- eared bat . Individual animals are rarely found in tree hollows. The winter quarters are caves and tunnels, in which the winter is mostly freely hanging at 6 to 12 ° C. The little mouse-eared mouse is a hikeable species, the longest documented hike was 600 km.
The mating season begins in autumn and probably lasts until spring. Males can have a harem made up of multiple females. The females give birth to a young.
Small mouse ears can live up to 13 years. They hunt in the dark or late at dusk. Their flight is smooth and slow, they are more manoeuvrable in a tight space than the great mouse-eared mouse. Food is probably also taken up from the ground. Beetles and moths are captured.
protection
The lesser mouse-eared mouse is listed by the European Union in Annexes II and IV of the Habitats Directive and is therefore a species of community interest that must be strictly protected, and special protection areas must be designated for their preservation.
supporting documents
Individual evidence
- ↑ a b Klaus Richarz. Observe, recognize and protect bats. Franckh-Kosmos , Stuttgart 2004 ISBN 978-3-440-09691-8
- ↑ Ahmet Karataş, Muhammed Mouradi Gharakheloo, Teoman Kankiliç: Karyotypes of Two Iranian Bat Species, Myotis blythii and Miniopterus Schreibersii (Chiroptera: Vespertilionidae, Miniopteridae) . Turk J Zool, 32 (2008) 305–308 ( online ; PDF file; 314 kB)
literature
- Wilfried Schober, Eckard Grimmberger: The bats of Europe . Franckh'sche Verlagsbuchhandlung, Stuttgart 1987. ISBN 3-440-05796-8