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Bacterial disease in marine bivalves, a review of recent studies: Trends and evolution

Published online by Cambridge University Press:  15 December 2004

Christine Paillard
Affiliation:
Laboratoire des sciences de l'environnement marin (LEMAR), Institut Universitaire Européen de la Mer (IUEM), Place Copernic Technopole Brest – Iroise, 29280 Plouzané, France
Frédérique Le Roux
Affiliation:
Laboratoire de génétique et pathologie, Ifremer, 17390 La Tremblade, France
Juan J. Borrego
Affiliation:
Department of Microbiology, Faculty of Sciences, University of Malaga, 29071 Malaga, Spain
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Abstract

The main microbial diseases affecting marine cultured bivalves have been revised on the basis of the etiologic agents, pathogenesis and pathogenicity. Several recent bivalve-interaction models have been studied, including Pecten larvae-Vibrio pectinicida, brown ring disease, juvenile oyster disease, Pacific oyster nocardiosis and summer mortalities of oysters. In addition, the taxonomy and phylogeny of new potential bivalve pathogens and their virulence factors have been established. Facing the difficulty of identifying bacterial strains associated with molluscan diseases (mainly vibriosis), polyphasic approaches have been developed to correlate the phenotype and genotype of potential pathogens. By evaluating likely virulence mechanisms, developing biotests to screen virulent strains and characterising the genes implicated in pathogenesis, a new generation of diagnostic tools, based on potential virulence, will be developed. Acquisition of pertinent diagnostic tools will be of major benefit in disease management, health surveillance and monitoring will contribute to maintaining sustainable aquaculture industries.

Type
Research Article
Copyright
© EDP Sciences, IFREMER, IRD, 2004

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