Swan mussel

Swan mussel

Taxobox
name = Swan mussel


image_caption =
status = NE
trend =
status_system =
regnum = Animalia
phylum = Mollusca
classis = Bivalvia
ordo = Unionoida
familia = Unionidae
genus = "Anodonta"
species = "A. cygnea"
binomial = "Anodonta cygnea"
binomial_authority = (Linnaeus, 1758)

The swan mussel, "Anodonta cygnea", is a large species of freshwater mussel in the family Unionidae. It is found in rivers and lakes. The shell is thin but large (approximately 10 to 20 cm) and rather flat, even at the umbo. The shell color is often pale greenish or brownish.

Because of its variability and its wide range of distribution, there are over 500 synonyms for this species.

Distribution and conservation status

* Not listed in IUCN red list - not evaluated (NE) [2006 IUCN Red List of Threatened Species. . Cited 11 Feb 2007.]

It's native distribution is European-Siberian. The geographical distribution of this species is from the British Isles east to Siberia, and south into northern Africa.

* Czech Republic
** vulnerable (VU) [Red List of the molluscs (Mollusca) of the Czech Republic http://mollusca.sav.sk/malacology/redlist.htm]
** Czech code, Decree for implementation, No. 395/1992 Sb. (and No. 175/2006 Sb.) - High Threatened species.

* Germany
** Germany - high endangered ("Stark gefährdet") [Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, ISBN 3-923376-02-2]
** Listed as specially protected species in annex 1 in Bundesartenschutzverordnung.
* The Netherlands - yes [http://www.anemoon.org/anm/voorlopige-kaarten/zoetwatermollusken/wetenschappelijk/anodonta-cygnea/]
* Poland - endangered [ [http://www.iop.krakow.pl/pckz/opis.asp?id=128&je=pl Anodonta cygnea - Polska Czerwona Księga Zwierząt - Bezkręgowce ] ] []
* Slovakia
* Sweden - quite rare [ [http://www.nrm.se/researchandcollections/zoology/invertebratezoology/factsoninvertebrates/thelargefreshwatermussels/swanmussel.4.5fdc727f10d795b1c6e800011399.html] cited 16 February 2007]
* British Isles
* Italy

References

External links

* [http://www.pesticideinfo.org/List_AquireAll.jsp?Species=480&Effect= PAN Pesticides Database - Chemical Toxicity Studies]
* http://clade.acnatsci.org/mussel/ The mussel project website


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