Mantle snail
| Mantle snail | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mantle snail ( Myxas glutinosa ) |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Myxas glutinosa | ||||||||||||
| ( OV Müller , 1774) |
The mantle snail ( Myxas glutinosa ) is a water lung snail from the family of the mud snail (Lymnaeidae) and the only species of the genus of the mantle snail ( Myxas ). It is one of the rarest freshwater snails in Europe and is acutely threatened with extinction in Germany.
features
The housing is very thin-walled, transparent and inflated to a strong spherical shape. In the adult stage, it measures 13 to 16 mm in height and 11 to 15 mm in width. The first two whorls are only slightly raised, so the apex is blunt. The first two turns increase quickly, but still evenly. Thereafter, the housing increases very quickly and the mouth enlarges very much. It is oval and takes up more than 90% of the total housing height in the adult stage. The surface is glossy, the edge of the jacket can slide almost completely over the case.
Geographical occurrence and habitat
The mantle snail occurs or came from East Belgium in the west across Central Europe and the Baltic States to Kazakhstan. In the north the distribution area extends to southern Finland, in the south the Alps form the border. The occurrence is limited to the lowlands. It lives in plant-rich, calmly flowing brooks or oxbow lakes as well as on sandy soils in lakes up to about 6 m deep. It needs very clean water.
Way of life and reproduction
The wintering adults spawn in spring in the sunny shallow water zone of their habitat and then die. The spring generation grows up quickly, becomes sexually mature with a shell size of around 8 mm and begins to spawn. The snails that hatch in summer and autumn hibernate and can live for almost a year.
The animals live on stones and graze on the algae that grow on them.
Danger
The shell snail is acutely threatened with extinction in Germany and Poland. Currently there is only a larger population in Mecklenburg-Western Pomerania and Schleswig-Holstein. It is already extinct in Austria, as well as in the Czech Republic.
Systematics
The species was first scientifically described in 1774 by Otto Friedrich Müller as Buccinum glutinosum . The type locality is in Denmark. Later it was also placed in the genera Amphipeplea , Nilsson, 1822, Radix Montfort, 1810 and Lymnaea Lamarck, 1801. It was determined to be the type species of the genus Myxas GB Sowerby I and is the only species in the genus. Other species that were originally placed under the genus Myxas (e.g. Myxas cumingiana Pfeiffer from the Philippines) have now been transferred to other genera.
swell
literature
- Peter Glöer: The animal world of Germany. Mollusca I Freshwater gastropods of Northern and Central Europe Key to identification, way of life, distribution. 2. rework. Ed., 327 pages, ConchBooks, Hackenheim 2002 ISBN 3-925919-60-0
Individual evidence
Web links
- Myxas glutinosa - MollBase
- Myxas glutinosa inthe IUCN 2013 Red List of Threatened Species . Listed by: Mollusc Specialist Group, 1996. Retrieved February 13, 2014.
Bellied diaper snail (2003) | Common boat snail (2004) | Tiger Snails (2005) | Common river mussel (2006) | Mask Snail (2007) | Mouse ears (2008) | Husmann's Well Snail (2009) | Common door snail (2010) | Petite poppy snail (2011) | Slender Amber Snail (2012) | European oyster (2013) | Garlic Shiny Snail (2014) | Mantle snail (2015) | Big pea clam (2016) | Beautiful land snail (2017) | Neptune Snail (2018) | Common heather snail (2019)