Etude comparée de la croissance de Crassostrea gigas Thunberg dans trois rivières du Morbihan

Breeding Crassostrea gigas was conducted in three rivers of Morbihan (Brittany France). During one year, every four months, their increasement was examined. In one of these rivers, oysters showed, however their age and their origin, an abnormal increasement. Shells were very thick, with many chamber...

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Bibliographic Details
Main Authors: Auger, Christian, Grizel, Henri, Tige, Gilbert, Langlade, Aime, Rabouin, Marie-agnès
Format: Conference Object
Language:French
Published: Actes CIEM CM 1977/K : 26 1977
Subjects:
Coquilles
Physiologie
Crassostrea gigas
Huîtres
Online Access:https://archimer.ifremer.fr/doc/1977/acte-6245.PDF
https://archimer.ifremer.fr/doc/00000/6245/
Description
Summary:Breeding Crassostrea gigas was conducted in three rivers of Morbihan (Brittany France). During one year, every four months, their increasement was examined. In one of these rivers, oysters showed, however their age and their origin, an abnormal increasement. Shells were very thick, with many chambers. At the opposite, in the two others rivers, oysters did not show that disordered state. Shells were sound and their linear increasement was harmonious Des élevages de Crassostrea gigas ont été réalisés dans trois rivières du Morbihan (France). Pendant un an leur développement a été suivi au rythme d'une série d'observations tous les 4 mois. Dans l'une des rivières, les huîtres ont présenté, quels que soient leur âge et leur origine, une croissance en longueur anormale. Les coquilles devenaient très épaisses et chambrées. Au contraire, dans les deux autres rivières, les huîtres ne présentaient pas ce dérèglement. Les coquilles étaient saines et la croissance harmonieuse.

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