Effect of sediment grain-size on development of brown ring disease in the Manila clam Ruditapes philippinarum - Université de Bretagne Occidentale
Article Dans Une Revue Aquaculture Année : 2008

Effect of sediment grain-size on development of brown ring disease in the Manila clam Ruditapes philippinarum

Résumé

Brown ring disease (BRD) in the Manila clam is induced by the bacterium Vibrio tapetis. During the infection process, the pathogen enters the extrapallial compartment of the Manila clam and induces the formation of a characteristic brown deposit that gives the disease its name. Although post-infection processes have been widely described for this disease, the mechanisms of entry of the bacteria into the extrapallial compartment remains unclear. From relationships between clam size and BRD prevalence, and between grain-size distribution in natural habitats and prevalence, we propose a simple explanation for this step: V. tapetis benefits from mechanical disruptions of the periostracal lamina or valve margins to colonize the extrapallial compartment. Such disruptions may be induced by the presence of large sediment grains in natural habitats, which become lodged in the shell opening. This hypothesis suggests that limiting handling of clams may help to limit development of BRD in cultured clam beds.
Fichier principal
Vignette du fichier
Flye-et-al2008.pdf (252.75 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00452260 , version 1 (02-02-2010)

Identifiants

Citer

Jonathan Flye-Sainte-Marie, Fred Jean, Susan Ford, Christine Paillard. Effect of sediment grain-size on development of brown ring disease in the Manila clam Ruditapes philippinarum. Aquaculture, 2008, 278 (1-4), pp.184-187. ⟨10.1016/j.aquaculture.2008.03.013⟩. ⟨hal-00452260⟩
424 Consultations
267 Téléchargements

Altmetric

Partager

More