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Many of these freshwater mussel species face conservation issues due to habitat degradation and in some cases due to over-exploitation for the freshwater pearl industry, and for the nacre of their shells, which was used in button manufacturing. Of the North American Unionida about 70% are either extinct (21 species), endangered (77 species ...
The Unionidae are a family of freshwater mussels, the largest in the order Unionida, the bivalve molluscs sometimes known as river mussels, or simply as unionids. [1] [2]The range of distribution for this family is world-wide.
Pimpleback freshwater mussel Southeastern United States: NE Quadrula quadrula: Mapleleaf freshwater mussel northern Eastern United States + Eastern Canada: LC Quadrula refulgens: Purple pimpleback freshwater mussel U.S. endemic NT Quadrula rumphiana: Ridged mapleleaf freshwater mussel U.S. endemic NT Quadrula sparsa: Appalachian monkey-face ...
Freshwater bivalve species vary greatly in size. Some pea clams (genus Pisidium) have an adult size of only 3 mm (0.12 in). In contrast, one of the largest species of freshwater bivalves is the swan mussel from the family Unionidae; it can grow to a length of 20 cm (7.9 in), and usually lives in lakes or slow-flowing rivers.
Freshwater mussels are used as host animals for the cultivation of freshwater pearls. Some species of marine mussel, including the blue mussel (Mytilus edulis) and the New Zealand green-lipped mussel (Perna canaliculus), are also cultivated as a source of food. Bouchots are marine pilings for growing mussels, here shown at an agricultural fair.
Typical freshwater species (such as many river mussel species in the family Unionidae) have a range which may consist of a series of adjacent river systems, a series of adjacent tributaries, or part of a single large river system. Large rivers and small tributary creeks typically share few species, and distribution patterns suggest large ...
An infestation of non-native golden mussels could cause ecological harm and compromise water infrastructure in the Sacramento-San Joaquin River Delta.
Elliptio is a genus of medium- to large-sized freshwater mussels, aquatic bivalve mollusks in the family Unionidae, [1] [2] commonly known as the unionids, freshwater mussels or naiads. In contrast with many other groups of American Unionidae, the Elliptio species reach their greatest diversity in the Atlantic-draining rivers of Georgia and the ...
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