Have oysters legs
Ostreidae family - oysters
Bizarre coalesced shells of the Pacific rock oyster Crassostrea gigas
from Walcheren / Netherlands (15-17cm)
"Sylter Royal" on the wrong track:
Crassostrea gigas from the Dithmarscher Speichererkoog (6cm)
An opened Crassostrea gigas of the variety "green Marennes"
Anthere / Wikimedia
GNU or CC license
In North American cuisine there are mainly two types of oysters in an abundance of varieties: here there are Crassostrea gigas as Westcott Bay Petite and Wahington Shookum as well as two Crassostrea virginica called Canadian Malpeque on the right
pointshoot / Flickr CC license
Breeding of Crassostrea gigas
1980 in Normandy / France
Growth in an oyster culture in Grand Isle, Louisiana / USA
lsgcp / Flickr1 –2 –3 CC license
- Generic name: from Latin crassus = thick + Latin ostrea = shell (derived from the Greek ostreion / ostreon, related to osteon = bone, leg) from which the names Auster (Germany), Oyster (Great Britain), Oester (Netherlands) and Huître (France) originated - species name: Latin gigas = giant
- Pacific oyster, Pacific rock oyster, Japanese oyster, Great oyster - English: Pacific cupped oyster, Pacific oyster, Japanese oyster, Giant oyster, Giant Pacific oyster, Immigrant oyster, Miyagi oyster - French: Huître creuse du Pacifique, Huître creuse, Japonaise , Gigas, Huitre géante du Pacifique - holl .: portugese oester - span .: Ostión, Ostión japonés - dan .: Stillehavsøsters, japansk østers - Estonian: Suur hiidauster - Icelandic: risaostra - Latvian: Austre - Lithuanian: lielâ austere - Polish: ostryga pacyficzna - Swedish: Japanskt jätteostron - Greek: Portogaliko stridi
- First description by Carl Peter Thunberg 1793
- Synonyms Gryphaea angulata, Ostrea gigas, Ostrea laperousii, Ostrea talienwhanensis
- maximum case size 40cm (normal 30cm)
- Sea snail at a depth of 4-50 m, preferably on rocky ground
- Originally spread in East Asia (coasts of Japan and Korea), but was spread over large parts of the world and is now to be found on all continents.
- In the area of the German North Sea coast, the species was first discovered in 1984 on a mussel culture west of Norddeich. It is now feared that, due to the lack of predators and mild winters, it could displace the blue mussel as the predominant organism.
- no species protection regulations, no trade restrictions
- Since its introduction into European oyster farming, Cassostrea gigas has supplanted the common European oyster and the Portuguese oyster because it is more robust, less prone to disease and growing rapidly. It takes over 90% of the world market share in oysters, mainly from aquaculture. Well-known origins are "Cancale" and "Marennes-Oléron" (France), "Loch Fyne" (Scotland), "Willapa" (USA) and, since 1986, "Sylter Royal" from the North Sea.
- Predators are starfish, crabs, certain fish and in some regions the "oyster drill" (the snail Ocenebra japonica, which originally also comes from Asia and is now also found on the American west coast).
- The systematic position of the Portuguese oyster Crassostrea angulata (which was initially bred in Europe as a replacement for the native Ostrea edulis, but was then decimated by disease and replaced by Crassostrea gigas) is unclear: it may be a strain of Crassostrea gigas, because the differences between the two should be too great for one species and the equality too small for different species. The Pacific oyster was probably brought to Europe by Portuguese seafarers centuries ago and thus made the Portuguese oyster.
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