Anisus vortex

Anisus vortex
	Shells of Anisus vortex
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Superorder:	Hygrophila
Family:	Planorbidae
Genus:	Anisus
Species:	A. vortex
Binomial name
	Anisus vortex; (Linnaeus, 1758)
Synonyms
	Helix vortex Linnaeus, 1758

Anisus vortex is a species of small freshwater snail, an aquatic gastropod mollusk in the family Planorbidae, the ram's horn snails and their allies.^[2]

Description

The shell is only 0.8 to 1.1 mm high and measures up to 9 mm in diameter. It has up to 7 whorls. The shell is flattened at the functional lower side, concave at the upper side. On the top, the whorls are flat, separated only by a slightly pronounced seam. On the bottom, however, the whorls are more curved and separated by a distinct suture. Shell with very sharp keel.

Distribution

The range of this species is from Europe across the Palearctic to Siberia. It occurs in countries and islands including:

Belgium
Czech Republic^[3] - least concern (LC)^[4]
Germany^[5]
Great Britain
Ireland
The Netherlands
Poland
Slovakia^[3]

References

^ Linnaeus, C. 1758. Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. 10th edition. - Vermes. Testacea: 700-781. Holmiae. (Salvius).
^ Bouchet, P. (2014). Anisus vortex (Linnaeus, 1758). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=716345 on 2014-11-24
^ ^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.
^ Juřičková L., Horsák M. & Beran L. (2001). "Check-list of the molluscs (Mollusca) of the Czech Republic". Acta Soc. Zool. Bohem. 65: 25-40.
^ (in German) Glöer P. & Meier-Brook C. (2003). Süsswassermollusken. DJN, pp. 134, ISBN 3-923376-02-2

External links

Anisus vortex at Animalbase
Media related to Anisus vortex at Wikimedia Commons

[1] Linnaeus, C. 1758. Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. 10th edition. - Vermes. Testacea: 700-781. Holmiae. (Salvius).

[WoRMS-2] Bouchet, P. (2014). Anisus vortex (Linnaeus, 1758). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=716345 on 2014-11-24

[Horsák_2010-3] (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.

[4] Juřičková L., Horsák M. & Beran L. (2001). "Check-list of the molluscs (Mollusca) of the Czech Republic". Acta Soc. Zool. Bohem. 65: 25-40.

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

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