Alinda biplicata

Alinda biplicata
	Shell of Alinda biplicata
Conservation status
	; Least Concern (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Heterobranchia
Order:	Stylommatophora
Family:	Clausiliidae
Genus:	Alinda
Species:	A. biplicata
Binomial name
	Alinda biplicata; (Montagu, 1803)[2]
Synonyms
	Turbo biplicata Montagu, 1803; Balea biplicata (Montagu, 1803); Laciniaria biplicata;

Alinda biplicata,[3][4] also known as Balea biplicata, common name the two lipped door snail or Thames door snail, is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails, all of which have a clausilium.

Distribution

This species is known to occur in a number of European countries and islands including:

This species is rare in Great Britain. In England, it is found mainly in the London area, almost exclusively along the River Thames, and is particularly preserved at Isleworth Ait.[5] There is also a colony at Purfleet in Essex.[6]

Description

Like all species in this family, this snail has a clausilium. This spoon-shaped "door" is supported by, and slides in, a series of internal shell folds, see the image below.

The weight of the adult live snail is 149±6 mg.[7]

References

Kappes, H. (2018) [errata version of 2017 assessment]. "Alinda biplicata". IUCN Red List of Threatened Species. 2017: e.T75882194A134891554. doi:10.2305/IUCN.UK.2017-3.RLTS.T75882194A75882200.en. Retrieved 1 May 2018.
Montagu, G. (1803). Testacea Britannica, or natural history of British shells. pp. I-XXXVIII [= 1-38], 1-606, [1-4], pl. 1-16. London.
Kantor Yu I., Vinarski M. V., Schileyko A. A. & Sysoev A. V. (published online on March 2, 2010). "Catalogue of the continental mollusks of Russia and adjacent territories". http://www.ruthenica.com/documents/Continental_Russian_molluscs_ver2-3-1.pdf Version 2.3.1.
fauna-eu.org "Alinda (Alinda) biplicata (Montagu 1803)". Fauna Europaea, last update 27 January 2011, accessed 17 April 2011.
Rare snail habitat is protected. BBC News, last updated: Thursday, 22 February 2007, 11:16 GMT.
"Island Sanctuary For Sweaty, Hairy Snails Becomes London's Latest Local Nature Reserve". Thames Water. 22 February 2007. Archived from the original on 24 March 2008.
Boch, Steffen; Prati, Daniel; Werth, Silke; Rüetschi, Jörg; Fischer, Markus (2011). "Lichen endozoochory by snails". PLOS ONE. 6 (4): e18770. Bibcode:2011PLoSO...618770B. doi:10.1371/journal.pone.0018770. PMC 3076439. PMID 21533256.

External links

Balea biplicata at AnimalBase
Balea biplicata at BioLib with images and synonyms
images
Photo of a mating pair:
Sulikowska-Drozd A., Maltz T. K. & Kappes H. (2013). "Brooding in a temperate zone land snail: seasonal and regional patterns". Contributions to Zoology 82(2): http://www.ctoz.nl/vol82/nr02/a02

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[iucn-1] Kappes, H. (2018) [errata version of 2017 assessment]. "Alinda biplicata". IUCN Red List of Threatened Species. 2017: e.T75882194A134891554. doi:10.2305/IUCN.UK.2017-3.RLTS.T75882194A75882200.en. Retrieved 1 May 2018.

[2] Montagu, G. (1803). Testacea Britannica, or natural history of British shells. pp. I-XXXVIII [= 1-38], 1-606, [1-4], pl. 1-16. London.

[Kantor_2010-3] Kantor Yu I., Vinarski M. V., Schileyko A. A. & Sysoev A. V. (published online on March 2, 2010). "Catalogue of the continental mollusks of Russia and adjacent territories". http://www.ruthenica.com/documents/Continental_Russian_molluscs_ver2-3-1.pdf Version 2.3.1.

[4] una-eu.org "Alinda (Alinda) biplicata (Montagu 1803)". Fauna Europaea, last update 27 January 2011, accessed 17 April 2011.

[5] Rare snail habitat is protected. BBC News, last updated: Thursday, 22 February 2007, 11:16 GMT.

[6] "Island Sanctuary For Sweaty, Hairy Snails Becomes London's Latest Local Nature Reserve". Thames Water. 22 February 2007. Archived from the original on 24 March 2008.

[7] Boch, Steffen; Prati, Daniel; Werth, Silke; Rüetschi, Jörg; Fischer, Markus (2011). "Lichen endozoochory by snails". PLOS ONE. 6 (4): e18770. Bibcode:2011PLoSO...618770B. doi:10.1371/journal.pone.0018770. PMC 3076439. PMID 21533256.