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using waste oyster shells to elevate the reef floor 25–45 cm (9.8–17.7 in) to keep the spat free of bottom sediments; building larger reefs, ranging up to 8.1 ha (20 acres) in size; disease-resistant broodstock [45] The "oyster-tecture" movement promotes the use of oyster reefs for water purification and wave attenuation.
The eastern oyster (Crassostrea virginica)—also called the Atlantic oyster, American oyster, or East Coast oyster—is a species of true oyster native to eastern North and South America. Other names in local or culinary use include the Wellfleet oyster , [ 3 ] Virginia oyster , Malpeque oyster , Blue Point oyster , Chesapeake Bay oyster , and ...
Brood size is between 250,000-300,000, with larvae around 187 micromillimeters long and eggs around 100–105 micromillimeters in diameter. The amount of larvae produced is dependent on the maternal oyster's size and the amount of reserved nutrients she has at the time of egg fertilization.
The species is mostly overlooked in Japan, where it stems from, due to its size. Kumamoto oysters were first introduced to the U.S. after World War II, when there was an increase in demand for oysters. Japan was asked to export 80,000 cases of oyster seeds, but did not have enough of the Pacific oyster to complete the order.
The optimum salinity for Pacific oysters is between 20 and 35 parts per thousand (ppt), and they can tolerate salinities as high as 38 ppt; at this level, however, reproduction is unlikely to occur. [10] The Pacific oyster is also a very temperature tolerant species, as it can withstand a range from −1.8 to 35 °C. [10]
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Pinctada maxima is a species of pearl oyster, a marine bivalve mollusk in the family Pteriidae, the pearl oysters. There are two different color varieties: the Gold-lipped oyster and the Silver-lipped oyster. These bivalves are the largest pearl oysters in the world.
The World Register of Marine Species lists these species: [1] Saccostrea circumsuta (Gould, 1850); Saccostrea cucullata (Born, 1778) – hooded oyster; Saccostrea echinata (Quoy & Gaimard, 1835) – tropical black-lip rock oyster