Pisidium casertanum
| Pisidium casertanum | |
|---|---|
.jpg) | |
| Conservation status | |
| NE[1] | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Subclass: | Heterodonta |
| Order: | Veneroida |
| Suborder: | Sphaeriacea |
| Family: | Sphaeriidae |
| Genus: | Pisidium |
| Subgenus: | Euglesa |
| Species: | P. casertanum |
| Binomial name | |
| Pisidium casertanum (Poli, 1791) | |
| Synonyms | |
|
Cardium casertanum Poli, 1791 | |
Pisidium casertanum, the pea cockle or pea clam, is a minute freshwater bivalve mollusc of the family Sphaeriidae.
Description
The shell is broad, sub-triangular or oval and is ornamented with sculpture of faint concentric striations.The umbos are slightly behind the middle.The Periostracum is silky, scarcely glossy. In colour it is whitish to grey-brown and often the shell is coated with reddish-brown deposits.
The shell is of similar shape to Sphaerium novaezelandiae but is smaller as an adult, more inflated, with a deeper hinge-plate, stronger teeth, and the ligament is not visible externally.
Length is up to 4.5 mm, height 3.7 mm, and thickness 2.3 mm.
Distribution
It has a cosmopolitan distribution and is perhaps the world's widely distributed non-marine mollusc.
- British Isles - common[2]
- Ireland [3]
- Czech Republic - in Bohemia, in Moravia,[4] least concern (LC)[5]
- Slovakia[4]
- Germany - distributed in whole Germany. High endangered (Stark gefährdet) in Hesse, critically endangered (vom Aussterben bedroht) in Saxony. Pisidium casertanum ponderosum endangered (gefährdet) in Brandenburg.[6]
- Latvia
- Netherlands[7]
- New Zealand - common[8]
- Nordic countries: Denmark, Faroes, Finland, Iceland, Norway and Sweden[9]
- Poland
References
- ↑ 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Cited 1 April 2007.
- ↑ Janus, Horst, 1965. ‘’The young specialist looks at land and freshwater molluscs’’, Burke, London
- ↑ Roy Anderson ,2005 An annotated list of the non-marine molluscs of Britain and Ireland Journal of Conchology, 38 (6): 607–637, (published 2005) .
- ↑ 4.0 4.1 (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.
- ↑ Juřičková L., Horsák M. & Beran L., 2001: Check-list of the molluscs (Mollusca) of the Czech Republic. Acta Soc. Zool. Bohem., 65: 25-40.
- ↑ Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, ISBN 3-923376-02-2
- ↑ http://www.anemoon.org/anm/voorlopige-kaarten/kaarten-per-soort/zoetwatermollusken/wetenschappelijk/pisidium-casertanum/?searchterm=Pisidium%20casertanum
- ↑ Powell A W B, New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
- ↑ Kuiper, J. G. J.; Økland, K. A., Knudsen, J., Koli, L., von Proschwitz, T., and Valovirta, I. (1989), "Geographical distribution of the small mussels (Sphaeriidae) in North Europe (Denmark, Faroes, Finland, Iceland, Norway and Sweden)", Annales Zoologici Fennici 26 (2): 73–101
External links
- Pisidium casertanum at Animalbase taxonomy, biology,status (threats), images
- photo
- Pesticides Database - Chemical Toxicity Studies
