Unio tumidus

Swollen river mussel
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Unionida
Family:	Unionidae
Genus:	Unio
Species:	U. tumidus
Binomial name
Unio tumidus Philipsson [de] in Retzius, 1788[2]
Distribution of Unio tumidus in Europe.

Unio tumidus, the swollen river mussel, is a species of freshwater mussel, an aquatic bivalve mollusc in the family Unionidae, the river mussels.[3]

Subspecies

• † Unio tumidus ludwigi Wenz, 1922

Synonyms

• Mya depressa Donovan, 1801 (a junior synonym)
• Mysca solida W. Turton, 1822 junior subjective synonym
• Unio (Tumidusiana) tumidus Philipsson, 1788 ·
• Unio (Unio) conus Spengler, 1793 ·
• Unio (Unio) muelleri Rossmässler, 1838 (a junior synonym)
• Unio (Unio) tumidus Philipsson, 1788 ·
• Unio conus Spengler, 1793 ·
• Unio gerstfeldtianus Clessin, 1880 · (a junior synonym)
• Unio inflata Hecart, 1833 (unavailable; a junior homonym of Unio inflatus Studer, 1820)
• Unio lauterborni F. Haas, 1909 (a junior synonym)
• Unio limosus var. maxima Mörch, 1864 (a junior synonym)
• Unio muelleri Rossmässler, 1838 ·
• Unio ovalis (Montagu, 1803) ·
• Unio rhenanus Kobelt, 1886 (a junior synonym)
• Unio tumidus gerstfeldtianus Clessin, 1880 (a junior synonym)
• Unio tumidus ilekensis Kobelt, 1911 (a junior synonym)
• Unio tumidus var. bashkiricus Zhadin, 1938 (a junior synonym)
• Unio tumidus var. borysthenensis Kobelt, 1880 (a junior synonym)
• Unio tumidus var. corrosus Zelebor, 1851 (a junior synonym)
• Unio tumidus var. falcatulus Drouët, 1881 (a junior synonym)
• Unio tumidus var. fridmani Zhadin, 1938 (a junior synonym)
• Unio tumidus var. heckingi Colbeau, 1868 (a junior synonym)
• Unio tumidus var. kobeltianus Zhadin, 1938 ·
• Unio tumidus var. limicola Mörch, 1864 (a junior synonym)
• Unio tumidus var. moltschanovi Zhadin, 1938 (a junior synonym)
• Unio tumidus var. okae Kobelt, 1911 (invalid; junior homonym of Unio...)
• Unio tumidus var. picta Mörch, 1864 ·
• Unio tumidus var. rohrmanni Kobelt, 1880 (a junior synonym)
• Unio tumidus var. saccatus Rossmässler, 1858 (a junior synonym)

Distribution

Its native distribution is European.[1][4]

• Croatia
• Czech Republic - in Bohemia, in Moravia,[5] vulnerable (VU)[6][7]
• Germany
  • Germany - high endangered (Stark gefährdet) [8]
  • Germany - Listed as a specially protected species in annex 1 in Bundesartenschutzverordnung.
• Latvia
• Lithuania - vulnerable
• Netherlands
• Poland
• Slovakia
• Sweden[9]
• British Isles - in England

References

1. Van Damme, D. (2011). "Unio tumidus". IUCN Red List of Threatened Species. 2011: e.T156111A4898810. doi:10.2305/IUCN.UK.2011-2.RLTS.T156111A4898810.en. Retrieved 19 November 2021.
2. "Unio tumidus Philipsson in Retzius, 1788". Integrated Taxonomic Information System. Retrieved 13 July 2017.
3. MolluscaBase eds. (2023). MolluscaBase. Unio tumidus Philipsson, 1788. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=182708 on 2023-01-09
4. "Unio tumidus Philipson, 1788". Fauna Europaea. Fauna Europaea Secretariat, Museum für Naturkunde, Berlin. Retrieved 13 July 2017.
5. (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.
6. Juřičková L., Horsák M. & Beran L., 2001: Check-list of the molluscs (Mollusca) of the Czech Republic. Acta Soc. Zool. Bohem., 65: 25-40.
7. Red List of the molluscs (Mollusca) of the Czech Republic http://mollusca.sav.sk/malacology/redlist.htm
8. Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, ISBN 3-923376-02-2
9. Swollen river mussel – Naturhistoriska riksmuseet

External links

• Retzius A.J. (1788). Dissertatio historico-naturalis sistens nova testaceorum genera. Quam præside D. M. Andr. J. Retzio (...) ad publicum examen defert Laurentius Münter Philipsson. 4+23 pp. Lund.
• Spengler L. (1793). Beskrivelse over et nyt Slægt af de toskallede Konchylier, forhen af mig kaldet Chæna, saa og over det Linnéiske Slægt Mya, hvilket nøiere bestemmes, og inddeles i tvende Slægter. Skrivter af Naturhistorie-Selskabet. 3(1): 16-69, pl. 2

Right and left valve of the same specimen:

• 
  Right valve
• 
  Left valve