Gyraulus crista

Gyraulus crista
Gyraulus crista
Conservation status
NE
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Hygrophila
Superfamily: Planorboidea
Family: Planorbidae
Subfamily: Planorbinae
Tribe: Planorbini
Genus: Gyraulus
Subgenus: Armiger
Species: G. crista
Binomial name
Gyraulus crista
(Linnaeus, 1758)[1]

Gyraulus crista, commonly called the Nautilus ramshorn, is a minute species of freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.

Synonyms:

  • Armiger crista
  • Planorbis crista

Subspecies:

  • Gyraulus crista cristatus Draparnaud, 1805
  • Gyraulus crista nautileus Linnaeus, 1767
  • Gyraulus crista spinulosus Clessin

Contents

Distribution

The distribution of this species is Holarctic, and includes:

  • Not listed in IUCN red list - not evaluated (NE) [2]
  • The Czech Republic - least concern (LC) [3]
  • Germany
  • Netherlands [4]
  • Slovakia
  • Sweden
  • The British Isles, Great Britain, Ireland

Habitat

This snail lives on water plants in freshwater.

Shell description

The minute shell is nearly planispiral in its coiling, but the spire is actually considerably sunken rather than raised (which is usually the case with gastropods).

The shell has regular transverse ridges which form points extending beyond the main curve of the periphery of the shell.

The shell color is a translucent yellowy-brown. The maximum shell dimension is about 3 mm.

Life habits

This minute species, although technically a pulmonate gastropod, does not use air for respiration but instead absorbs oxygen through its mantle cavity which is full of water.

References

  1. ^ 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).
  2. ^ 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Cited 5 March 2007.
  3. ^ Juřičková L., Horsák M. & Beran L., 2001: Check-list of the molluscs (Mollusca) of the Czech Republic. Acta Soc. Zool. Bohem., 65: 25-40.
  4. ^ http://www.anemoon.org/anm/voorlopige-kaarten/zoetwatermollusken/wetenschappelijk/gyraulus-crista

External links


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Crista (disambiguation) — Crista, Crest in Latin, may refer to: Crista, an internal compartment formed by the inner membrane of a mitochondrion Crista ampullaris, a sensory organ of the internal ear Crista dividends, a structure in the developing heart of the human embryo …   Wikipedia

  • Gyraulus — Taxobox name = Gyraulus image caption = Gyraulus crista image width = 225px status = regnum = Animalia phylum = Mollusca classis = Gastropoda subclassis = Orthogastropoda superordo = Heterobranchia ordo = Pulmonata familia = Planorbidae genus =… …   Wikipedia

  • List of molluscs recorded in the Czech Republic — There are 243 species of molluscs living in the wild in the Czech Republic. In addition there are at least 11 gastropod species in greenhouses.There are 215 gastropod species (50 freshwater and 165 land species) and 28 bivalve species living in… …   Wikipedia

  • List of molluscs recorded in Germany — There are 390 species (including subspecies) [ [http://www.mollbase.de/list/deunam.htm List of German land and freshwater molluscs including their common names Diskussionsfassung (in Bearbeitung)] ] of molluscs living in the wild in Germany. In… …   Wikipedia

  • Список моллюсков Германии — …   Википедия

  • Список моллюсков Чешской Республики — Список моллюсков Чешской Республики. В данный список включены все сухопутные и пресноводные моллюски Чешской Республики. Фауна типа на этой территории включает 247[1] видов. Из них 219[1] видов брюхоногих, из которых 50[1] пресноводные и 169[1]… …   Википедия

  • Список моллюсков Австрии — …   Википедия

  • List of molluscs recorded in Poland — There is around 260 species of molluscs living in the wild in Poland. ystematic listList is in zoological order. The Polish name is in brackets.The source for the non marine species on this list is: [http://www.gnm.se/gnm/clecom/eng… …   Wikipedia

  • Список моллюсков Польши — Содержание 1 Брюхоногие 2 Двустворчатые 3 См. также 4 Ссылки …   Википедия

  • List of molluscs recorded in Slovakia — There are 254 (according this list, for more recent information see Recommended literature section) species of molluscs living in the wild in Slovakia. In addition there are at least 1 gastropod species in greenhouses.There are 228 species of… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”