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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.
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 ...
Margaritiferidae is a family of medium-sized freshwater mussels, aquatic bivalve molluscs in the order Unionida. [1] [2] It is the most threatened of all unionid families.[3]The family is sometimes referred to as the freshwater pearl mussel family, [4] but "freshwater pearl mussel" more often applies to the species Margaritifera margaritifera.
Margaritifera margaritifera (Linnaeus, 1758) — Freshwater pearl mussel (includes Margaritifera margaritifera durrovensis Phillips, 1928) Margaritifera marrianae R. I. Johnson, 1983; The following fossil species are known from the mid-Cretaceous of Mongolia, being formerly classified in the genus Unio: [2] †Margaritifera elongata (Martinson ...
The range of distribution for this family is world-wide. It is at its most diverse in North America, with about 297 recognised taxa, [3] [4] [5] but China and Southeast Asia also support very diverse faunas. Freshwater mussels occupy a wide range of habitats, but most often occupy lotic waters, i.e. flowing water such as rivers, streams and creeks.
The western pearlshell (Margaritifera falcata) is a species of freshwater bivalve, a pearl mussel, a bivalve mollusk in the family Margaritiferidae. This species can be found only in the United States and Canada, where it occurs mostly west of the Rocky Mountains .
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Like other freshwater mussels, this species releases its larvae, termed glochidia, into the water where they enter the bodies of fish as parasites to develop into juvenile mussels. Host fish species for this mussel include striped shiner ( Luxilus chrysocephalus ), redfin shiner ( Lythrurus umbratilis ), golden shiner ( Notemigonus crysoleucas ...
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