Valvata cristata

Valvata cristata
	Five views of ashellofValvata cristata
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Family:	Valvatidae
Genus:	Valvata
Species:	V. cristata
Binomial name
	Valvata cristata; O. F. Müller,1774

Valvata cristatais aspeciesof minutefreshwater snailwith anoperculum,anaquatic gastropod molluskormicromolluskin the familyValvatidae,the valve snails.

Distribution

Czech Republic- Bohemia and Moravia^[2]
Slovakia^[2]
Poland
Germany- (Arten der Vorwarnliste)^[3]
Netherlands
the British Isles:Great BritainandIreland
Hungary
Kaliningrad Oblast,Russia^[4]
and other areas

Specimens ofV.cristatainNaturalis Biodiversity Center.Note the tiny size

Shell description

Theshellof this exceeding small (2–4 mm)Valvataspecies is very flat in its coiling, and therefore it somewhat resembles aPlanorbisshell. However, the shell is dextral in coiling and has anoperculum.^[5]The shell is transparent, has 3-3.5whorlsin a circularaperture.Theumbilicusis wide and open, more than 1/3 of shell diameter.

Ecology

This species lives in stagnant and slow-moving water.

Myzyk (2002)^[6]described life cycle ofValvata cristata.

References

^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).
^^a ^b(in 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.
^(in 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 Bohemoslovaca10:79–83.PDF.
^Janus, Horst (1965). ‘’The young specialist looks at land and freshwater molluscs’’, Burke, London
^Myzyk S. (2002). "Life cycle ofValvata cristataO. F. Müller, 1774 (Gastropoda: Heterobranchia) in the laboratory ".Folia Malacologica10(2): 47-75.PDF.

External links

Valvata cristataatAnimalbasetaxonomy,short description, distribution, biology,status (threats), images
Ulster Museum Image

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[1] 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).

[Horsák_2010-2] (in 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.

[3] (in German)Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 106,ISBN 3-923376-02-2

[4] Filippenko D. (2011). "Fauna of gastropod molluscs in the Curonian Lagoon littoral biotopes (Baltic Sea, Kaliningrad region, Russia)".Malacologica Bohemoslovaca10:79–83.PDF.

[5] Janus, Horst (1965). ‘’The young specialist looks at land and freshwater molluscs’’, Burke, London

[Myzyk_2002-6] Myzyk S. (2002). "Life cycle ofValvata cristataO. F. Müller, 1774 (Gastropoda: Heterobranchia) in the laboratory ".Folia Malacologica10(2): 47-75.PDF.

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