Sphaerium corneum

Taxobox
name = "Sphaerium corneum"

---

image_caption =
image_width = 250px
regnum = Animalia
phylum = Mollusca
classis = Bivalvia
subclassis = Heterodonta
ordo = Veneroida
subordo = Sphaeriacea
superfamilia =
familia = Sphaeriidae
subfamilia =
genus = "Sphaerium"
species = "S. corneum"
binomial = "Sphaerium corneum"
binomial_authority = (Linnaeus, 1758)
range_

range_map_width = 250px
synonyms =

"Sphaerium corneum", also known as the European fingernailclam, is a very small freshwater clam, an aquatic bivalve mollusk in the family Sphaeriidae, the fingernail clams.

Description

The shell is fairly globular and is up to 9 mm in size. The color of the shell is usually a deep yellow, tending towards brown.

Biology

* hermaphroditic
* lives up to 3 years
*

Distribution and conservation status

* Not mentioned in IUCN Red List - Not Evaluated (NE) [2006 IUCN Red List of Threatened Species. . Cited March 24 2007.]

It's native distribution is Palearctic.

* Czech Republic - least concern (LC) [Juřičková L., Horsák M. & Beran L., 2001: Check-list of the molluscs (Mollusca) of the Czech Republic. Acta Soc. Zool. Bohem., 65: 25-40.]
* Germany - a common species in most of Germany, but it is in listed as endangered ("gefährdet") in Thuringia [Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, ISBN 3-923376-02-2]
* Netherlands [http://www.anemoon.org/anm/voorlopige-kaarten/zoetwatermollusken/wetenschappelijk/sphaerium-corneum]
* Sweden [ [http://www.nrm.se/researchandcollections/zoology/invertebratezoology/factsoninvertebrates/thelargefreshwatermussels.4.5fdc727f10d795b1c6e80007096.html The Large Freshwater mussels - Naturhistoriska riksmuseet ] ]
* United states - nonindigenous [Amy Benson. 2007. Sphaerium corneum. USGS Nonindigenous Aquatic Species Database, Gainesville, FL. Revision Date: 4/20/2004]
* and many other countries

In freshwater: standing water and slow-running rivers.

References

External links

* http://www.biolib.cz/en/taxon/id3012
* [http://www.pesticideinfo.org/List_AquireAll.jsp?Species=245&Effect= Pesticides Database - Chemical Toxicity Studies]