Anisus vorticulus
| Anisus vorticulus | |
|---|---|
 | |
| Shells of Anisus vorticulus | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Heterobranchia clade Euthyneura clade Panpulmonata clade Hygrophila |
| Superfamily: | Planorboidea |
| Family: | Planorbidae |
| Subfamily: | Planorbinae |
| Tribe: | Planorbini |
| Genus: | Anisus |
| Subgenus: | Disculifer |
| Species: | A. vorticulus |
| Binomial name | |
| Anisus vorticulus (Troschel, 1834)[2] | |
The lesser ramshorn snail, Anisus vorticulus, is a species of minute, air-breathing, freshwater snail, an aquatic gastropod mollusk in the family Planorbidae, the ramshorn snails.
Distribution
This species is mentioned in annexes II and IV of the Habitats Directive.
It occurs in:
- Czech Republic[3] - critically endangered (CR).[4] Its Conservation status in 2004-2006 is bad (U2) in report for European commission in accordance with Habitats Directive.[5]
- England - vulnerable (VU),[6] listed in List of endangered species in the British Isles
- Ireland
- Germany - critically endangered (vom Aussterben bedroht)[7]
- Netherlands[8]
- Poland
- Slovakia[3]
- Latvia
- Croatia - in the Krka National Park. First finding of this species in Craoatia was in 2009.[9]
Habitat
This small snail lives in pools with standing water and in oxbow lakes, but these biotopes are threatened because of sedimentation and ecological succession.[10]
In the Czech Republic this species usually lives in biotopes where there are lots of Lemna trisulca.[10]
Water quality that is suitable for Anisus vorticulus is water without turbidity; with a pH from 7 to 7,5; with calcium from 40 to 400 mg/l and with electrical conductivity from 200 to 1100 mS/m.[10]
References
- ↑ Van Damme D. (2012). "Anisus vorticulus". The IUCN Red List of Threatened Species. Version 2014.3. <www.iucnredlist.org>. Downloaded on 22 February 2015.
- ↑ Troschel F. H. (1834). De limnaeaceis seu de gasteropodis pulmonatis quae nostris in aquis vivunt. pp. [1-5], 1-65, [1]. Berolini. page 51.
- 1 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.
- ↑ Juřičková L., Horsák M. & Beran L. (2001) "Check-list of the molluscs (Mollusca) of the Czech Republic". Acta Societatis Zoologicae Bohemicae 65: 25-40.
- ↑ (in Czech) Dušek J., Hošek M. & Kolářová J. (2007) "Hodnotící zpráva o stavu z hlediska ochrany evropsky významných druhů a typů přírodních stanovišť v České republice za rok 2004-2006". Ochrana přírody 62(5): appendix 5:I-IV.
- ↑ UK Biodiversity Action Plan "Archived copy". Archived from the original on 2007-06-25. Retrieved 2007-03-05.
- ↑ (in German) Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, ISBN 3-923376-02-2.
- ↑ (in Dutch) http://www.anemoon.org/anm/voorlopige-kaarten/zoetwatermollusken/wetenschappelijk/anisus-vorticulus
- ↑ Beran L. (2009). "The first record of Anisus vorticulus (Troschel, 1834) (Gastropoda: Planorbidae) in Croatia?". Malacologica Bohemoslovaca 8: 70. PDF.
- 1 2 3 (in Czech) Agentura ochrany přírody a krajiny ČR (August 2007) Obecné charakteristiky předmětů ochrany v rizikových chráněných územích a návrhy hodnot indikačních parametrů a managementových opatření. skupina: KORÝŠI A MĚKKÝŠI. online, PDF Accessed 24 November 2009.
External links
- Anisus vorticulus at Animalbase
- distribution of Anisus vorticulus at European Environment Agency webpage
- (in Czech) Anisus vorticulus and its distribution in the Czech Republic with map
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