Sphaerium lacustre
| Sphaerium lacustre | |
|---|---|
| |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Sphaeriida |
| Family: | Sphaeriidae |
| Genus: | Musculium |
| Species: | M. lacustre
|
| Binomial name | |
| Musculium lacustre (O. F. Müller, 1774)
| |
Musculium lacustre is a species of small freshwater clam, an aquatic bivalve mollusc in the family Sphaeriidae, the fingernail clams and pea clams.
Description
The 8–11 mm. shell is oval to quadrangular in shape. The umbos which are capped by the juvenile shell are slightly in front of middle directed forwards. The posterior end is broad and truncated. The shell is fragile, fairly glossy and pearl grey to white in colour. The periostacum (surface) is ornamented with fine, even, concentric striation.
Distribution
The native distribution of this species is Holarctic and occurs in islands and countries including:
- Belgium
- Czech Republic – in Bohemia, in Moravia,[2] near threatened (NT)[3]
- Slovakia[2]
- Germany – (Arten der Vorwarnliste)[4]
- Great Britain
- Ireland
- Nordic countries: Denmark, Finland, Sweden (but not in Faroes nor in Iceland)[5]
References
- ^ Seddon, M.B.; Killeen, I. & Madhyastha, A. (2014). "Musculium lacustre". IUCN Red List of Threatened Species. 2014. Retrieved 9 June 2015.
{{cite journal}}: Invalid|ref=harv(help) - ^ a b (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.
- ^ Red List of the molluscs (Mollusca) of the Czech Republic http://mollusca.sav.sk/malacology/redlist.htm
- ^ Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, ISBN 3-923376-02-2
- ^ 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
External links
- Musculium lacustre at Animalbase taxonomy,short description, biology,status (threats), images
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