Valvata cristata
| Valvata cristata | |
|---|---|
 | |
| Two views of a shell of Valvata cristata | |
| Conservation status | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Heterobranchia informal group Lower Heterobranchia |
| Superfamily: | Valvatoidea |
| Family: | Valvatidae |
| Genus: | Valvata |
| Subgenus: | Valvata |
| Species: | V. cristata |
| Binomial name | |
| Valvata cristata O. F. Müller, 1774[2] | |
Valvata cristata is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusk or micromollusk in the family Valvatidae, the valve snails.
Distribution
- Czech Republic - Bohemia and Moravia[3]
- Slovakia[3]
- Poland
- Germany - (Arten der Vorwarnliste)[4]
- Netherlands
- the British Isles: Great Britain and Ireland
- Hungary
- Kaliningrad Oblast, Russia[5]
- and other areas
Shell description
The shell of this exceeding small (2–4 mm) Valvata species is very flat in its coiling, and therefore it somewhat resembles a Planorbis shell. However, the shell is dextral in coiling and has an operculum.[6] The shell is transparent, has 3-3.5 whorls an a circular aperture. The umbilicus is wide and open, more than 1/3 of shell diameter.
Ecology
This species lives in stagnant and slow-moving water.
Myzyk (2002)[7] described life cycle of Valvata cristata.
References
- ↑ (2006). IUCN Red List of Threatened Species. <www.iucnredlist.org>. Cited 10 November 2007.
- ↑ Müller O. F. (1774). Vermivm terrestrium et fluviatilium, seu animalium infusoriorum, helminthicorum, et testaceorum, non marinorum, succincta historia. Volumen alterum. pp. I-XXVI [= 1-36], 1-214, [1-10]. Havniae & Lipsiae. (Heineck & Faber).
- ↑ 3.0 3.1 (Czech) Horsák M., Juřičková L., Beran L., Čejka T. & Dvořák L. (2010). "Komentovaný seznam měkkýšů zjištěných ve volné přírodě České a Slovenské republiky. [Annotated list of mollusc species recorded outdoors in the Czech and Slovak Republics]". Malacologica Bohemoslovaca, Suppl. 1: 1-37. PDF.
- ↑ (German) Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 106, ISBN 3-923376-02-2
- ↑ Filippenko D. (2011). "Fauna of gastropod molluscs in the Curonian Lagoon littoral biotopes (Baltic Sea, Kaliningrad region, Russia)". Malacologica Bohemoslovaca 10: 79–83. PDF.
- ↑ Janus, Horst (1965). ‘’The young specialist looks at land and freshwater molluscs’’, Burke, London
- ↑ Myzyk S. (2002). "Life cycle of Valvata cristata O. F. Müller, 1774 (Gastropoda: Heterobranchia) in the laboratory". Folia Malacologica 10(2): 47-75. PDF.
External links
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Wikimedia Commons has media related to Valvata cristata. |
- Valvata cristata at the National Center for Biotechnology Information
- Valvata cristata at Animalbase taxonomy,short description, distribution, biology,status (threats), images
- Ulster Museum Image