Theodoxus fluviatilis
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NE
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| Theodoxus fluviatilis (Linnaeus, 1758) |
Theodoxus fluviatilis, the River nerite, is a small species of freshwater and brackish water snail with an operculum. It is an aquatic gastropod mollusk in the family Neritidae, the nerites.
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[edit] Distribution
This species is found in Europe and North Africa.
[edit] Habitat
This small nerite is mostly found in calcium-rich, clean, fast-moving fresh water, but it can also tolerate low-salinity brackish water.
[edit] Shell description
The shell is ovoid and only about 11 mm (less than half an inch) in maximum dimension. The shell surface is whitish with fine rather variable darker markings.
[edit] Distribution and conservation status
This species is found in Europe.
- Not listed in IUCN red list - not evaluated (NE) [1]
- Czech Republic - extinct in Bohemia[2]
- Germany - high endangered (Stark gefährdet) [3]
- Netherlands [4]
- Poland
- Slovakia[5]
- the British Isles
- ...
[edit] References
- ^ 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Cited 14 June 2007.
- ^ Red List of the molluscs (Mollusca) of the Czech Republic
- ^ Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, ISBN 3-923376-02-2
- ^ http://www.anemoon.org/anm/voorlopige-kaarten/zoetwatermollusken/wetenschappelijk/theodoxus-fluviatilis
- ^ Čejka, Tomáš; Michal Horsák (2002). "First records of Theodoxus fluviatilis and Sphaerium solidum (Mollusca) from Slovakia" (in English). Biologia, Bratislava 57 (5): 561–562.
- Horst Janus, 1965, The young specialist looks at land and freshwater molluscs, Burke, London
