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词条 Anisus vorticulus
释义

  1. Distribution

  2. Habitat

  3. References

  4. External links

{{Taxobox
| image = Anisus vorticulus.jpg
| image_caption = Shells of Anisus vorticulus
| status = DD | status_system = iucn3.1
| status_ref = [1]
| regnum = Animalia
| phylum = Mollusca
| classis = Gastropoda
| unranked_superfamilia = clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Hygrophila
| superfamilia = Planorboidea
| familia = Planorbidae
| subfamilia = Planorbinae
| tribus = Planorbini
| genus = Anisus
| subgenus = Disculifer
| species = A. vorticulus
| binomial = Anisus vorticulus
| binomial_authority = (Troschel, 1834)[2]
}}

Anisus vorticulus (lesser ramshorn snail or little whirlpool ramshorn snail) 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. It is currently the focus of a Back from the Brink project.[7]
  • Ireland
  • Germany - critically endangered (vom Aussterben bedroht)[8]
  • Netherlands[9]
  • Poland
  • Slovakia[3]
  • Latvia
  • Croatia - in the Krka National Park. First finding of this species in Craoatia was in 2009.[10]

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.[11]

In the Czech Republic this species usually lives in biotopes where there are lots of Lemna trisulca.[11]

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.[11]

References

1. ^Van Damme D. (2012). "Anisus vorticulus". The IUCN Red List of Threatened Species. Version 2014.3. . Downloaded on 22 February 2015.
2. ^Troschel F. H. (1834). De limnaeaceis seu de gasteropodis pulmonatis quae nostris in aquis vivunt. pp. [1-5], 1-65, [1]. Berolini. page 51.
3. ^{{cs icon}} 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 Societatis Zoologicae Bohemicae 65: 25-40.
5. ^{{cs icon}} 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.
6. ^UK Biodiversity Action Plan {{cite web|url=http://www.ukbap.org.uk/UKPlans.aspx?ID%3D99 |title=Archived copy |accessdate=2007-03-05 |deadurl=yes |archiveurl=https://web.archive.org/web/20070625141001/http://www.ukbap.org.uk/ukplans.aspx?ID=99 |archivedate=2007-06-25 |df= }}
7. ^{{cite web |title=Little Whirlpool Ramshorn Snail |url=https://naturebftb.co.uk/the-projects/little-whirpool-ramshorn-snail/ |website=Back from the Brink |accessdate=16 August 2018}}
8. ^{{de icon}} Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, {{ISBN|3-923376-02-2}}.
9. ^{{cite web|url=http://www.anemoon.org/anm/voorlopige-kaarten/zoetwatermollusken/wetenschappelijk/anisus-vorticulus|title=Anemoon > Flora en Fauna > Soorteninformatie|website=www.anemoon.org|language=Dutch}}
10. ^Beran L. (2009). "The first record of Anisus vorticulus (Troschel, 1834) (Gastropoda: Planorbidae) in Croatia?". Malacologica Bohemoslovaca 8: 70. PDF.
11. ^{{cs icon}} 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{{dead link|date=October 2016 |bot=InternetArchiveBot |fix-attempted=yes }} Accessed 24 November 2009.

External links

  • Anisus vorticulus at Animalbase
  • distribution of Anisus vorticulus at European Environment Agency webpage
  • {{cs icon}} [https://web.archive.org/web/20070812235943/http://stanoviste.natura2000.cz/index.php?page=zivocich_detail&ZivocichID=135 Anisus vorticulus and its distribution in the Czech Republic with map]
{{Commonscat}}{{Taxonbar|from=Q199130}}{{Planorbidae-stub}}

3 : Planorbidae|Gastropods described in 1834|Endangered species of the British Isles

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