Viviparus viviparus

Viviparus viviparus
A live individual of Viviparus viviparus
Six shells of Viviparus viviparous, including two juveniles
Conservation status

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Caenogastropoda

informal group Architaenioglossa

Superfamily: Viviparoidea
Family: Viviparidae
Subfamily: Viviparinae
Genus: Viviparus
Species: V. viviparus
Binomial name
Viviparus viviparus
(Linnaeus, 1758)[2]
Synonyms[3]

Helix vivipara Linnaeus, 1758
Viviparus fluviorum Montfort, 1810

Viviparus viviparus is a species of large freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Viviparidae, the river snails.

Description

The height of the shell is 25–35 mm. The width of the shell is 20–26 mm. Males are 2 mm smaller than females of the same age. The shell colour is dark greenish brown or greyish yellow with three reddish brown spiral bands. It is striated but not with a hammer pattern. The shell apex is blunt (more pointed in other Viviparus species). The shell has 5.5-6 weakly convex whorls. The last whorl is relatively large compared to that of other Viviparus species. The umbilicus is narrow.[4]

Distribution

This is a European species, which is found in Croatia, Czech Republic (in Bohemia only),[5] Germany, Netherlands, Poland, Great Britain, Ireland and other countries.[6]

Drawing of the animal and shell of Viviparus viviparus; a) head b) tentacles c) eyes d) foot e) operculum

References

  1. ↑ Van Damme D., Seddon M. & Kebapçı U. (2012). "Viviparus viviparus". The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 04 August 2014.
  2. ↑ 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).
  3. ↑ "Synonyms of Helix vivipara". AnimalBase, accessed 4 August 2014.
  4. ↑ Species summary for Viviparus viviparus. AnimalBase, last modified 26 October 2013, accessed 4 June 2014.
  5. ↑ (Czech) 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.
  6. ↑ Fauna Europaea Viviparus viviparus

External links

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