Myxas glutinosa

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Myxas glutinosa
Myxas glutinosa.jpg
Four shells of Myxas glutinosa, scale bar in cm & mm
Scientific classification
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M. glutinosa
Binomial name
Myxas glutinosa

Myxas glutinosa (glutinous snail) is a species of small air-breathing freshwater snail, an aquatic gastropod mollusc in the family Lymnaeidae, the pond snails.

Contents

Anatomy

drawing of apertural view of the shell of Myxas glutinosa Myxas glutinosa.png
drawing of apertural view of the shell of Myxas glutinosa

This snail is unusual in that it extends its almost transparent mantle to completely cover the shell when it is in motion, giving the very small animal a glass-like appearance. It also makes the animal sticky to the touch, hence its common name.

Shell Description

The shell is 13 to 16 mm in height and 11 mm to 15 mm in width in the adult. The upper whorls are almost flat so that the shell has a short blunt spire, the last whorl is inflated and predominating. The aperture is more than 90% of the shell height. The umbilicus is closed. The shell colour is brown or green, extremely thin and very transparent and shiny.

Distribution

This species is European: it is now rare in western Europe, and even rarer in eastern Europe.

According to the IUCN red list [1] it is also native to Austria, Belarus, Belgium, Estonia, Finland, Germany, Kazakhstan, Latvia, Lithuania, Moldova, Norway, Russian Federation, Sweden and Ukraine.

Habitat

This species requires pollution-free, extremely clear, calm water, in calcium-rich canals, streams and lakes.

It is rapidly declining or already extinct in many European countries, because of the loss of good habitat.

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References

  1. 1 2 Mollusc Specialist Group (1996). "Myxas glutinosa". IUCN Red List of Threatened Species . 1996: e.T14263A4428448. doi: 10.2305/IUCN.UK.1996.RLTS.T14263A4428448.en . Retrieved 18 November 2021.
  2. Müller O. F. 1774. Vermivm terrestrium et fluviatilium, seu animalium infusoriorum, helminthicorum, et testaceorum, non marinorum, succincta historia. Volumen alterum. pp. I-XXVI [= 1-36], 1-214, [1-10]. Havniae & Lipsiae. (Heineck & Faber).
  3. Protection for wild animals on Schedule 5 of the Wildlife and Countryside Act, 1981. website accessed 7 August 2009.
  4. "Species action plan - Glutinous Snail (Myxas glutinosa)". UK Biodiversity action plan. December 1995. Archived from the original on 2008-11-05. Retrieved 31 December 2008.
  5. Myxas glutinosa – The glutinous snail. accessed 31 December 2008.
  6. (in 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.
  7. Glöer P. & Meier-Brook C. 2003. Süsswassermollusken. DJN, pp. 134, page 107, ISBN   3-923376-02-2.

Further reading