Overview

Distribution

occurs (regularly, as a native taxon) in multiple nations

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National Distribution

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

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Ecology

Habitat

Habitat Type: Terrestrial

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Migration

Non-Migrant: No. All populations of this species make significant seasonal migrations.

Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).

Locally Migrant: No. No populations of this species make annual migrations of over 200 km.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Vallonia pulchella

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 6
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: N5 - Secure

United States

Rounded National Status Rank: N5 - Secure

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

Environmental Specificity: Broad. Generalist or community with all key requirements common.

Comments: This species is considered a disturbance tolerant native to North America (Nekola, 2008).

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Wikipedia

Vallonia pulchella

Vallonia pulchella, common name the lovely vallonia, is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Valloniidae.

Apical view of the shell of Vallonia pulchella
Apertural view of the shell of Vallonia pulchella
Basal view of the shell of Vallonia pulchella

Description[edit]

For terms see gastropod shell

The shell is circular with 3.2 - 3.3 whorls.The last whorl is wider immediately before aperture and not much descending. The aperture is not much oblique and the lip is weaker than in Vallonia costata.Also Vallonia pulchella has slightly more elevated whorls than Vallonia costata. Like other Vallonia the umbilicus is very wide.

The shell is ivory-white shell with very fine and irregular streaks. The animal is milky white. The tentacles are short and the posterior end of the foot is round.

Distribution[edit]

This species occurs in countries and islands including:

Europe:

America:

Life habits[edit]

The size of the egg is 0.5 mm.[8]

In this species some parental care was observed: apparently the eggs were cleaned of fungi.[8] Parental care is very rare in gastropods in general and has otherwise been observed only in the genus Libera.

References[edit]

  1. ^ 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]. Havniæ & Lipsiæ. (Heineck & Faber).
  2. ^ a b (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.
  3. ^ Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. Journal of Conchology. 41 (1): 91-109.
  4. ^ Vallonia pulchella (O. F. Müller 1774) - Glatte Grasschnecke. Accessed 26 April 2009.
  5. ^ Vallonia pulchella. Stichting ANEMOON, Accessed 26 April 2009.
  6. ^ Robert G. Forsyth. Terrestrial Gastropods of the Columbia Basin, British Columbia Family Valloniidae. Accessed 25 April 2009.
  7. ^ Coppolino M.L. 2009. Land Snails of Southern Illinois. Southern Illinois University, Carbondale, Illinois, USA. Last updated 31 January 2009, accessed 25 April 2009.
  8. ^ a b Heller J.: Life History Strategies. in Barker G. M. (ed.): The biology of terrestrial molluscs. CABI Publishing, Oxon, UK, 2001, ISBN 0-85199-318-4. 1-146, cited pages: 419-420 and page 426.
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