Anisus spirorbis is a species of small freshwater air-breathing snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.MolluscaBase eds. (2021). MolluscaBase. Anisus spirorbis (Linnaeus, 1758). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=716344 on 2021-02-22
Taxonomy Anisus spirorbis may be a broad-whorled morphotype of Anisus leucostoma.
Distribution Europe to Siberia.
This species occurs in countries that include: Czech Republic 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. – vulnerable (VU)Red List of the molluscs (Mollusca) of the Czech Republic Slovakia Germany – high endangered (Stark gefährdet)Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 106, Poland Ireland Great Britain Uzbekistan Siberia
Description The shell is 1 to 1.5 mm high and measures 4 to 5.5 mm in diameter. It has approximately 4.5 whorls. The mouth is oblique to the axis of the coil. The whorls are increase relatively rapidly (in relation to other Anisus species). The shell is yellowish horn coloured and bears thin growth strips. The body of the animal is grey-brownish black with lighter colored tentacles.
Ecology Parasites: This species serves as first intermediate host for Prosthogonimus ovatusProsthogonimus ovatus (Parasite Species Summary) Dendritobilharzia loossi – Anisus spirorbis is an intermediate host.Akramova F. D., Azimov D. A. & Shakarboev E. B. (2011). "Morphology, biology and taxonomy of Dendritobilharzia loossi Skrjabin, 1924 (Trematoda: Bilharziellidae), a parasite of Pelecanus onocrotalus (Pelecanidae) and Anas plathyrinchos (Anatidae)". Parasite 18(1): 39–48. .
References
Deshayes G.P., 1839-1851 Histoire naturelle générale et particulière des mollusques terrestres et fluviatiles tant des espèces que l'on trouve aujourd'hui vivantes, que des dépouilles fossiles de celles qui n'existent plus; classés par les caractères essentiels que présentent ces animaux et leurs coquilles, vol. I, p. 402 pp Studer, S. (1820). Kurzes Verzeichnis der bis jetzt in unserm Vaterlande entdeckten Conchylien. Naturwissenschaftlicher Anzeiger der Allgemeinen Schweizerischen Gesellschaft für die Gesammten Naturwissenschaften, 3 (11): 83–90; (12): 91–94. Bern Glöer P. & Pešić V. (2012) The freshwater snails (Gastropoda) of Iran, with descriptions of two new genera and eight new species. ZooKeys 219: 11–61
External links Anisus spirorbis at Animalbase Linnaeus, C. (1758). Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Editio decima, reformata [10th revised edition], vol. 1: 824 pp. Laurentius Salvius: Holmiae Sacco, F. (1886). Fauna malacologica delle alluvioni plioceniche del Piemonte. Memorie della Reale Accademia delle Scienze di Torino, Serie II. 37: 169-206