Pisidium conventus

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Pisidium conventus
BrauerDie Süsswasserfauna DeutschlandsPisidium.jpg
Scientific classification edit
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Sphaeriida
Family: Sphaeriidae
Genus: Pisidium
Species:
P. conventus
Binomial name
Pisidium conventus
Clessin, 1877

Pisidium conventus, the arctic-alpine pea clam, is a species of freshwater bivalve from the family Sphaeriidae.

Description[]

The small (2.2–2.8 mm.) shell is oval in shape and thin and fragile. It is broad and flattened (laterally compressed) with flattened umbos near the midpoint. The colour is yellowish-white and the periostracum (surface) is silky with fine, concentric striation.

Ecology[]

P. conventus is a relict of colder climatic periods found only in deep, cold, upland lakes.

Distribution and conservation status[]

References[]

  1. ^ 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Cited 30 May 2007.
  2. ^ Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, ISBN 3-923376-02-2
  3. ^ Pisidium conventus - Polish Red Data Book of Animals
  4. ^ Kuiper, J. G. J.; Økland, K. A.; Knudsen, J.; Koli, L.; von Proschwitz, T.; Valovirta, I. (1989), "Geographical distribution of the small mussels (Sphaeriidae) in North Europe (Denmark, Faroes, Finland, Iceland, Norway and Sweden)" (PDF), Annales Zoologici Fennici, 26 (2): 73–101
  5. ^ Roy Anderson ,2005 An annotated list of the non-marine molluscs of Britain and Ireland Journal of Conchology, 38 (6): 607–637, (published 2005) [1].

External links[]


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