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Unionidae burrow into the substrate, with their posterior margins exposed. They pump water through the incurrent aperture, obtaining oxygen and food. They remove phytoplankton and zooplankton, as well as suspended bacteria, fungal spores, and dissolved organic matter.
Exportation of freshwater mussels for the use in the Japanese cultured pearl industry has supported the North American freshwater mussel fisheries since the late 1950s. The mother of pearl (or nacre) from exported freshwater mussels are used to make a bead nucleus which is placed in a living animal to form a pearl. In the 1990s, the United ...
Note that the common names of edible bivalves can be misleading, in that not all species known as "cockles" "oysters", "mussels", etc., are closely related. Ark clams , including: Blood cockle; Senilia senilis; Many species of true mussels, family Mytilidae, including: Blue mussels. Blue mussel; California mussel; Mediterranean mussel; Mytilus ...
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The freshwater pearl mussel (Margaritifera margaritifera) is an endangered species of freshwater mussel, an aquatic bivalve mollusc in the family Margaritiferidae.. Although the name "freshwater pearl mussel" is often used for this species, other freshwater mussel species (e.g. Margaritifera auricularia) can also create pearls and some can also be used as a source of mother of pearl.
This species has been frequently misidentified as other similar American freshwater mussels, especially before Frierson first described it in 1927. For example, it was formerly recognized as Lampsilis ligamentina ; [ 7 ] which probably arose from confusion with the superficially similar species Actinonaias ligamentina .
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Systematically blue mussel consists of a group of (at least) three closely related taxa of mussels, known as the Mytilus edulis complex.Collectively they occupy both coasts of the North Atlantic (including the Mediterranean) and of the North Pacific in temperate to polar waters, [2] as well as coasts of similar nature in the Southern Hemisphere.