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The Ostreidae, the true oysters, include most species of molluscs commonly consumed as oysters. Pearl oysters are not true oysters, and belong to the order Pteriida . Like scallops , true oysters have a central adductor muscle , which means the shell has a characteristic central scar marking its point of attachment.
Some tropical oysters, such as the mangrove oyster in the family Ostreidae, grow best on mangrove roots. Low tide can expose them, making them easy to collect. The largest oyster-producing body of water in the United States is the Chesapeake Bay, although these beds have decreased in number due to overfishing and pollution.
Ostreidae Ostreoidea is a taxonomic superfamily of bivalve marine mollusc , sometimes simply identified as oysters , [ 1 ] containing two families. The ostreoids are characterized in part by the presence of a well developed axial rod . [ 2 ]
Ostreidae. The order Ostreida includes the true oysters. One superfamily and two extant families are recognised within it. The two families are Ostreidae, the true ...
Ostrea lurida, common name the Olympia oyster, after Olympia, Washington in the Puget Sound area, is a species of small, edible oyster, a marine bivalve mollusk in the family Ostreidae. This species occurs on the northern Pacific coast of North America .
The eastern oyster, like all members of the family Ostreidae, can make small pearls to surround particles that enter the shell. These pearls, however, are insignificant in size and of no monetary value; the pearl oyster , from which commercial pearls are harvested, is of a different family .
Saccostrea glomerata is an oyster species belonging to the family Ostreidae. [5] It is endemic to Australia and New Zealand. [6] [7] In Australia, it is known as the Sydney rock oyster and is commercially farmed. In New Zealand, where the species is no longer farmed, it is known as the New Zealand rock oyster or Auckland oyster.
A dragonfly in its radical final moult, metamorphosing from an aquatic nymph to a winged adult.. In biology, moulting (British English), or molting (American English), also known as sloughing, shedding, or in many invertebrates, ecdysis, is a process by which an animal casts off parts of its body to serve some beneficial purpose, either at specific times of the year, or at specific points in ...