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Ostreidae
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. The shell tends to be irregular as a result of attaching to a substrate. Both oviparous (egg-bearing) and larviparous (larvae-bearing) species are known within Ostreidae. Both types are hermaphrodites. However, the larviparous species show a pattern of alternating sex within each individual, whereas the oviparous species are simultaneous hermaphrodites, producing either female or male gametes according to circumstances. Members of genus '' Ostrea'' generally live continually immersed and are quite flat, with roundish shells. They differ from most bivalves by having shells completely made up of calcite, but with internal muscle scars of aragonitic composition. They f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saccostrea
Rock oysters are true oysters of the genus ''Saccostrea'', belonging to the subfamily Saccostreinae of the family Ostreidae.MolluscaBase eds. (2022). MolluscaBase. Saccostrea Dollfus & Dautzenberg, 1920. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=138300 on 2022-04-27 The best-known species is the Sydney rock oyster (''Saccostrea glomerata''). Species The World Register of Marine Species lists these species: * '' Saccostrea circumsuta'' (Gould, 1850) * ''Saccostrea cucullata ''Saccostrea cucullata'', the hooded oyster or Natal rock oyster, is a species of rock oyster found mainly in the Indo-Pacific Ocean. It was first described by the Czech mineralogist, metallurgist, and malacologist Ignaz von Born in 1778. De ...'' (Born, 1778) – hooded oyster * '' Saccostrea echinata'' (Quoy & Gaimard, 1835) – tropical black-lip rock oyster * '' Saccostrea glomerata'' (Gould, 1850) - Sydney rock oyster * '' S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ostrea
''Ostrea'' is a genus of edible oysters, marine bivalve mollusks in the family Ostreidae, the oysters. Fossil records Although molecular studies suggest that ''Ostrea'' first appeared around the Eocene and originated no earlier than the Cretaceous, paleontologists have historically applied the genus to almost all fossil oysters from the Permian onward, many of which are only superficially similar to extant ''Ostrea''. As a result, the genus ''Ostrea'' includes about 150 extinct species. History At least one species within this genus, '' Ostrea lurida'', has been recovered in archaeological excavations along the Central California coast of the Pacific Ocean, demonstrating it was a marine taxon exploited by the Native American Chumash people as a food source. Species Species in the genus ''Ostrea'' include: * † '' Ostrea albertensis'' Russell & Landes, 1937 * '' Ostrea algoensis'' G. B. Sowerby II, 1871 *'' Ostrea angasi'' G.B. Sowerby II, 1871 * '' Ostrea angelica'' R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oyster
Oyster is the common name for a number of different families of salt-water bivalve molluscs that live in marine or brackish habitats. In some species, the valves are highly calcified, and many are somewhat irregular in shape. Many, but not all oysters, are in the superfamily Ostreoidea. Some species of oyster are commonly consumed and are regarded as a delicacy in some localities. Some types of pearl oysters are harvested for the pearl produced within the mantle. Others, such as the translucent Windowpane oysters, are harvested for their shells. Etymology The word ''oyster'' comes from Old French , and first appeared in English during the 14th century. The French derived from the Latin , the feminine form of , which is the Latinisation (literature), latinisation of the Ancient Greek () 'oyster'. Compare () 'bone'. Types True oysters True oysters are members of the family Ostreidae. This family includes the edible oysters, which mainly belong to the genera '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magallana
''Magallana'' is a genus of true oysters (family Ostreidae) containing some of the most important oysters used for food. Species in this genus have been moved from ''Crassostrea'' after it was found to be paraphyletic. Species Extant species are: Species only known from the fossil record: * ''Magallana ingens'' (Zittel, 1865) † Genetics The genome of ''Magallana gigas'' has been recently sequenced revealing an extensive set of genes that enable it to cope with environmental stresses. References Magallana, Bivalve genera Extant Early Cretaceous first appearances {{Ostreidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crassostrea
''Crassostrea'' is a genus of true oysters (family Ostreidae) containing some of the most important oysters used for food. The genus was recent split in WoRMS, following the DNA-based phylogenies of Salvi ''et al.'' (2014 and 2017). Pacific species were moved to a new genus ''Magallana ''Magallana'' is a genus of true oysters (family Ostreidae) containing some of the most important oysters used for food. Species in this genus have been moved from ''Crassostrea'' after it was found to be paraphyletic. Species Extant species a ...''. ''C. zhanjiangensis'' became '' Talonostrea zhanjiangensis''. The changes are not universally welcomed by oyster researchers, as ''C. gigas'' (now ''M. gigas'') is "one of the most researched species of marine invertebrate". Species Extant species are: Fossil species Fossil species include: * †''Crassostrea alabamiensis'' (Lea 1833) * †''Crassostrea ashleyi'' ( Hertlein 1943) (syn. ''Ostrea arnoldi'') * †''Crassostrea cahobasensis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crassostrea Rhizophorae 000
''Crassostrea'' is a genus of true oysters (family Ostreidae) containing some of the most important oysters used for food. The genus was recent split in WoRMS, following the DNA-based phylogenies of Salvi ''et al.'' (2014 and 2017). Pacific species were moved to a new genus ''Magallana''. ''C. zhanjiangensis'' became '' Talonostrea zhanjiangensis''. The changes are not universally welcomed by oyster researchers, as ''C. gigas'' (now ''M. gigas'') is "one of the most researched species of marine invertebrate". Species Extant species are: Fossil species Fossil species include: * †''Crassostrea alabamiensis'' (Lea 1833) * †''Crassostrea ashleyi'' ( Hertlein 1943) (syn. ''Ostrea arnoldi'') * †''Crassostrea cahobasensis'' (Pilsbry and Brown 1910) * †''Crassostrea contracta'' (Conrad 1865) * †''Crassostrea cucullaris'' (Lamarck 1819) * †''Crassostrea cuebana'' (Jung 1974) * †''Crassostrea elegans'' (Deshayes, 1832) (syn. †''Cubitostrea elegans'' Deshayes 1832 or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magallana Gigas
The Pacific oyster, Japanese oyster, or Miyagi oyster (''Magallana gigas'') is an oyster native to the Pacific coast of Asia. It has become an introduced species in North America, Australia, Europe, and New Zealand. Etymology The genus ''Magallana'' is named for the Portuguese explorer Ferdinand Magellan and its specific epithet ''gígās'' is from the Greek for "giant". It was placed in the genus '' Crassostrea'' until 2017; from the Latin ''crass'' meaning "thick", ''ostrea'' meaning "oyster". In 2017, the WoRMS, following the DNA-based opinion of Salvi ''et al.'', moved all pacific members of ''Crassostrea'' to ''Magallana''. Parts of the scientific community resist this change and continue to argue that ''Crassostrea gigas'' should be the proper name. They argue that Salvi's DNA sampling is incomplete, and that criteria other than the genetic sequence should have been considered. Description The shell of ''M. gigas'' varies widely with the environment where it is attached. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scallop
Scallop () is a common name that encompasses various species of marine bivalve molluscs in the taxonomic family Pectinidae, the scallops. However, the common name "scallop" is also sometimes applied to species in other closely related families within the superfamily Pectinoidea, which also includes the thorny oysters. Scallops are a cosmopolitan family of bivalves found in all of the world's oceans, although never in fresh water. They are one of the very few groups of bivalves to be primarily "free-living", with many species capable of rapidly swimming short distances and even migrating some distance across the ocean floor. A small minority of scallop species live cemented to rocky substrates as adults, while others attach themselves to stationary or rooted objects such as seagrass at some point in their lives by means of a filament they secrete called a byssal thread. The majority of species, however, live recumbent on sandy substrates, and when they sense the presence ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinctada
''Pinctada'' is a genus of saltwater oysters, marine bivalve mollusks in the family Pteriidae. These pearl oysters have a strong inner shell layer composed of nacre, also known as "mother of pearl". Pearl oysters are not closely related to either the edible oysters of family Ostreidae or the freshwater pearl mussels of the families Unionidae and Margaritiferidae. '' Pinctada margaritifera'' and '' P. maxima'' are used for culturing South Sea and Tahitian pearls. They are cultured widely primarily in the central and eastern Indo-Pacific. A pearl oyster can be seen on the reverse side of the 1,000-peso note of the Philippines. Species of commercial value All species within the genus produce pearls. Attempts have been made to harvest pearls commercially from many ''Pinctada'' species. However, the only species that are currently of significant commercial interest are: * Gulf pearl oyster, ''Pinctada radiata''; Persian Gulf, Red Sea, Mediterranean Sea and throughout the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Register Of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialists on each group of organism. These taxonomists control the quality of the information, which is gathered from the primary scientific literature as well as from some external regional and taxon-specific databases. WoRMS maintains valid names of all marine organisms, but also provides information on synonyms and invalid names. It is an ongoing task to maintain the registry, since new species are constantly being discovered and described by scientists; in addition, the nomenclature and taxonomy of existing species is often corrected or changed as new research is constantly being published. Subsets of WoRMS content are made available, and can have separate badging and their own home/launch pages, as "subregisters", such as th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
