Marsh shrew
| Marsh shrew | ||||||||||||
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Marsh shrew ( Neomys anomalus ) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Neomys anomalus | ||||||||||||
| Cabrera , 1907 |
The shrew ( Neomys anomalus ) is a mammal of the shrew family . It colonizes the banks of near-natural waters and swamps in Central and Southern Europe.
Mark
The head-body length is 65-86 mm and the tail length 40-56 mm. The animals weigh 6–16 g, rarely up to 18.5 g. The fur is slate black on the upper side, the underside is gray to white. The species shows fewer adaptations to aquatic life than the similar water shrew , a bristle border on the tail and hind feet is only indicated.
distribution
The spatially highly fragmented ( disjoint ) distribution area of the species includes Central and Southern Europe and Asia Minor . In a west-east direction, the area extends from Portugal to the Don . The species is largely absent in the north and west of Europe, the northwestern border of the relatively closed distribution area runs from central France via southeast Belgium , Westphalia , Thuringia and Saxony to the north of the Czech Republic and Slovakia . To the north of it there are isolated occurrences in north-west France as well as in north-west and east Poland , to the south the distribution extends to the extreme south of Italy and central Greece .
habitat
The swamp shrew populates the eutrophic bank vegetation of still waters, slow-flowing streams and rivers as well as swamps from the flatlands up to 1850 m. The use of the habitat is apparently significantly influenced by the competition with the water shrew . Where the water shrew is absent, the swamp shrew is more aquatic and also increases in size.
Way of life
The diet consists mainly of aquatic insects and their larvae, harvestmen and earthworms ; when there is a lack of food, the species also hunts in areas away from water. Reproduction probably takes place from April to October. A female has a maximum of three litters per year, each with 3 to 13 young. The pups weigh 0.5-0.6 g at birth, the eyes open after 21 to 22 days and the suckling period is around 30 days.
Existence and endangerment
In Germany, the swamp shrew is listed in the Red List as "critically endangered" (Category 2) due to its close ties to near-natural bodies of water and the endangerment of these habitats due to water construction . However, more recent studies have at least regionally led to a more positive assessment of the endangerment, so in Bavaria in 2003 the species was only classified as "endangered" (category 3). In Germany the swamp shrew is classified as a type of responsibility within the national strategy for biological diversity of the federal government. The world population is considered safe according to the IUCN .
literature
- Anthony J. Mitchell-Jones, Giovanni Amori, Wieslaw Bogdanowicz, Boris Krystufek, PJH Reijnders, Friederike Spitzenberger, Michael Stubbe, Johan BM Thissen, Vladimiŕ Vohralik, Jan Zima: The Atlas of European Mammals. Poyser, London, 1999, ISBN 0-85661-130-1 , pp. 58-59
- Erwin Stresemann (founder), Konrad Senglaub (ed.): Excursion fauna of Germany. Volume 3: Vertebrates. 12th, heavily edited edition. G. Fischer, Jena et al. 1995, ISBN 3-334-60951-0 , p. 372.
Web links
- Neomys anomalus in the endangered Red List species the IUCN 2008. Posted by: Amori, G. (Small Nonvolant Mammal Red List Authority) & Temple, H. (Global Mammal Assessment Team), 2008. Retrieved on October 15 of 2008.
Individual evidence
- ↑ Alois Liegl, Bernd-Ulrich Rudolph, Richard Kraft: Red List of Endangered Mammals (Mammalia) Bavaria. Bay LfU 166, 2003 online (PDF; 74 KB) .
- ↑ Species in particular responsibility of Germany on the homepage of the Federal Agency for Nature Conservation, accessed on June 3, 2016
