, Volume 595, Issue 1, pp 139–147

Global diversity of freshwater mussels (Mollusca, Bivalvia) in freshwater



The term freshwater bivalve is very inclusive and not very informative. There are representatives of at least 19 families that have at least one representative living in freshwater. This suggests at least 14 different invasions of freshwater. At least nine families have small to large radiations in the freshwater environment: Corbiculidae, Sphaeriidae, Dreissenidae, and the unioniforme families: Hyriidae, Margaritiferidae, Unionidae, Etheriidae, Iridinidae, and Mycetopodidae. The unioniforme families contain at least 180 genera and about 800 species. This order is characterized by the unique parasitic larval stage on the gills, fins or the body of a particular host fish. This order of freshwater bivalves is suffering a very high rate of extinction, with about 37 species considered presumed extinct in North America alone. The level of endangerment and extinction facing these animals is primarily the result of habitat destruction or modification.


Bivalve Etheriidae Extinction Freshwater mussel Hyriidae Iridinidae Margaritiferidae Mycetopodidae Unionidae Unioniformes 

Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  1. 1.Research LaboratoryNorth Carolina State Museum of Natural SciencesRaleighUSA

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