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Mussel (/ ˈ m ʌ s ə l /) is the common name used for members of several families of bivalve molluscs, from saltwater and freshwater habitats. These groups have in common a shell whose outline is elongated and asymmetrical compared with other edible clams, which are often more or less rounded or oval.
In North America, for instance, many freshwater mussel species have gone extinct, and of those remaining, 65 percent are rated as endangered, threatened or vulnerable. Droughts , forest clearing , farming , use of dams for water management , and changes in water temperature can all pose threats to freshwater bivalve populations.
It is native to Chile and Argentina. In Chile, it is the most common freshwater mussel species, and inhabits lentic and lotic environments. [2] The species is sensitive to water levels of phosphorous and turbidity. [3] Its filtering capacity has been proposed as a biocontrol of salmon farming eutrophication. [4]
The global annual production of freshwater prawns (excluding crayfish and crabs) in 2007 was about 460,000 tonnes, exceeding 1.86 billion dollars. [47] Additionally, China produced about 370,000 tonnes of Chinese river crab. [48] In addition astaciculture is the freshwater farming of crayfish (mostly in the US, Australia, and Europe). [49]
Golden mussels, an invasive species that officials across the country have been worried about for years, invaded North America for the first time through the Port of Stockton.
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 ...