Theodoxus fluviatilis

Theodoxus fluviatilis
An oblique left side view of a live Theodoxus fluviatilis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Neritimorpha
Order: Cycloneritida
Family: Neritidae
Genus: Theodoxus
Species:
T. fluviatilis[1]
Binomial name
Theodoxus fluviatilis[1]
Synonyms[1][9][10][11][5][12]
  • Nerita fluviatilis Linnaeus, 1758
  • Neritina fluviatilis (Linnaeus, 1758)
  • Theodoxus lutetianus Montfort, 1810[4] (unnecessary substitute name for Nerita fluviatilis Linnaeus, 1758)
  • Theodoxus balticus (Nilsson, 1821)
  • Theodoxus halophilus (Klett, 1828)
  • Theodoxus trifasciatus (Menke, 1828)
  • Theodoxus rhodocolpa De Cristofori & Jan, 1832
  • Theodoxus thermalis (Boubée, 1833)
  • Theodoxus intextus A. & J. B. Villa, 1841
  • Theodoxus parreyssii A. & J. B. Villa, 1841
  • Theodoxus ticinensis A. & J. B. Villa, 1841
  • Theodoxus zebrina Récluz, 1841
  • Theodoxus mittreana Récluz, 1842
  • Theodoxus doriae Issel, 1865
  • Theodoxus reynesiana Dubreuil, 1869
  • Theodoxus brauneri Lindholm, 1908[5][6] – or as separate species[1][7]
  • Theodoxus brauneri f. lacrymans Lindholm, 1908
  • Theodoxus brauneri f. alboguttata Lindholm, 1908
  • Theodoxus brauneri f. pulherrima Lindholm, 1908
  • Theodoxus dniestroviensis Put, 1972
  • Theodoxus velox Anistratenko, 1999[8]

Theodoxus fluviatilis, common name the river nerite, is a species of small freshwater and brackish water snail with a gill and an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites.[13]

This widely distributed neritid snail species occurs from Europe to Central Asia. It has a thick shell with a calcified operculum. The coloration pattern on the shell is very variable. Theodoxus fluviatilis lives in freshwater and in brackish water, in rivers and lakes on stones. It feeds mainly by grazing on biofilms and diatoms.

Some of the populations of this species are spreading, and these can reach densities up to thousands of snails per square meter. Females lay egg capsules, each of which contains a large number of eggs, but only one snail hatches from the capsule. The snails reach sexual maturity in a year, and the total lifespan is 2 or 3 years.

  1. ^ a b c "Theodoxus". Fauna Europaea, last update 27 January 2011, accessed 12 April 2011.
  2. ^ Kebapçı U. & Van Damme D. (2012). "Theodoxus fluviatilis". The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 30 July 2014.
  3. ^ Linnaeus C. (1758). Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. 10th edition. Vermes. Testacea: 700–781. Holmiae. (Salvius). page 777.
  4. ^ (in French) Montfort P. D. de (1810). Conchyliologie systématique, et classification méthodique des coquilles; offrant leurs figures, leur arrangement générique, leurs descriptions caractéristiques, leurs noms; ainsi que leur synonymie en plusieurs langues. Ouvrage destiné à faciliter l'étude des coquilles, ainsi que leur disposition dans les cabinets d'histoire naturelle. Coquilles univalves, non cloisonnées. Tome second. – pp. [1–3], 1–676. Paris. page 351.
  5. ^ a b Cite error: The named reference Anistratenko 2005 was invoked but never defined (see the help page).
  6. ^ (in German) Lindholm W. A. (1908). "Materialien zur Molluskenfauena [sic] von Südwestrussland, Polen und der Krim". Zapiski Novorossijskago Obshchestva Estestvoispytatelej – Mémoires de la Société des Naturalistes de la Nouvelle-Russie 31: 199–232. Odesa.
  7. ^ "Species in genus Theodoxus" (n=20). AnimalBase, accessed 11 April 2011.
  8. ^ Cite error: The named reference Anistratenko 1999 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Kantor 2010 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference AB was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Bunje 2005 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Zettler 2008 was invoked but never defined (see the help page).
  13. ^ Neubauer, Thomas A. (2014). Theodoxus (Theodoxus) fluviatilis (Linnaeus, 1758). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=821986 on 2014-11-18