Evolution of oyster aquaculture : problems and perspectives
The total marine molluscs produced by aquaculture had increased from 1984 to 1990 by 1 000 000 tons going from 1 993 985 tons to 2 964 688 tons. The oyster production remained constant with 870 000 tons. Crassostrea gigas, the Japanese oyster, represented more than 80 % of the oyster production but...
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Format: | Conference Object |
Language: | English |
Published: |
Counc. Meet. of the Int. Counc. for the Exploration of the Sea, [Dublin (Eire)], [23 Sep - 1 Oct 1993]
1993
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Subjects: | |
Online Access: | https://archimer.ifremer.fr/doc/1993/acte-3067.pdf https://archimer.ifremer.fr/doc/00000/3067/ |
Summary: | The total marine molluscs produced by aquaculture had increased from 1984 to 1990 by 1 000 000 tons going from 1 993 985 tons to 2 964 688 tons. The oyster production remained constant with 870 000 tons. Crassostrea gigas, the Japanese oyster, represented more than 80 % of the oyster production but high mortalities appeared in different countries connected to end of winter and summer mortalities and development of new diseases. The cultivation of Crassostrea virginica, the American oyster, was limited (80 000 tons) by the spreading of two diseases (MSX and dermo) destruction of habitat and over-exploitation. Production of the fiat oyster Ostrea eduIis was still very limited by the presence of the Bonamia diseases in a11 the countries except on Mediterranean coast. La production aquacole marine de mollusques a augmenté de 1984 à 1990 de 1 000 000 tonnes passant de 1 993 985 tonnes à 2 964 688 tonnes. La production d'huîtres est restée constante avec 870 000 tonnes. L'huître japonaise Crassostrea gigas représente plus de 80 % de la production d'huîtres mais de fortes mortalités apparaissent dans différents pays dues aux mortalités de fin d'hiver, aux mortalités estivales et au développement de nouveaux parasites. La culture de l'huître américaine Crassostrea virginica est limitée à 80 000 tonnes par l'extension de deux parasites (MSX et dermo), par la destruction de l'habitat et la surexploitation des gisements naturels. La production de l'huître plate Ostrea edulis est encore très limitée par la présence du parasite Bonamia dans tous les pays excepté sur la côte méditerranéenne. |
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