Handling enhances the development of brown ring disease signs in Ruditapes philippinarum - Université de Bretagne Occidentale Access content directly
Journal Articles Journal of Shellfish Research Year : 2011

Handling enhances the development of brown ring disease signs in Ruditapes philippinarum

Abstract

Brown ring disease (BRD) in the Manila clam is characterized by the formation of a brown deposit of conchiolin on the inner surface of the shell that gives the disease its name. The development of the signs of BRD may be favored by the entry of bacteria in the extrapallial compartments via mechanical disruptions of the periostracal lamina and/or chipping of the shell margin. In order to test this hypothesis, we conducted an experiment simulating clam handling under aquaculture conditions and we checked for prevalence of BRD signs. Our results assess that rough handling of R. philippinarum in presence of the bacterium V. tapetis significantly increase the prevalence of BRD signs. As a consequence our results show that minimizing manipulations and transfers of clams during culture is beneficial to avoid the development of BRD signs.
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Dates and versions

hal-00568169 , version 1 (23-02-2011)
hal-00568169 , version 2 (23-02-2011)

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Fred Jean, Jonathan Flye-Sainte-Marie, Clémence Oudard, Christine Paillard. Handling enhances the development of brown ring disease signs in Ruditapes philippinarum. Journal of Shellfish Research, 2011, 30 (1), pp.13-15. ⟨10.2983/035.030.0103⟩. ⟨hal-00568169v2⟩
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