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The 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〔 Horsák M., Juřičková L., Beran L., Čejka T. & Dvořák L. (2010). "Komentovaný seznam měkkýšů zjištěných ve volné přírodě České a Slovenské republiky. (list of mollusc species recorded outdoors in the Czech and Slovak Republics )". ''Malacologica Bohemoslovaca'', Suppl. 1: 1-37. (PDF ).〕 - critically endangered (CR).〔Juřičková L., Horsák M. & Beran L. (2001) "Check-list of the molluscs (Mollusca) of the Czech Republic". ''Acta Societatis Zoologicae Bohemicae'' 65: 25-40.〕 Its Conservation status in 2004-2006 is bad (U2) in report for European commission in accordance with Habitats Directive.〔 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.〕 * England - vulnerable (VU),〔UK Biodiversity Action Plan http://www.ukbap.org.uk/UKPlans.aspx?ID=99〕 listed in List of endangered species in the British Isles * Ireland * Germany - critically endangered (''vom Aussterben bedroht'')〔 Glöer P. & Meier-Brook C. (2003) ''Süsswassermollusken''. DJN, pp. 134, page 109, ISBN 3-923376-02-2.〕 * Netherlands〔 http://www.anemoon.org/anm/voorlopige-kaarten/zoetwatermollusken/wetenschappelijk/anisus-vorticulus〕 * Poland * Slovakia〔 * Latvia * Croatia - in the Krka National Park. First finding of this species in Craoatia was in 2009.〔Beran L. (2009). "The first record of ''Anisus vorticulus'' (Troschel, 1834) (Gastropoda: Planorbidae) in Croatia?". ''Malacologica Bohemoslovaca'' 8: 70. (PDF ).〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Anisus vorticulus」の詳細全文を読む スポンサード リンク
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