DAO 49:221-226 (2002)  -  doi:10.3354/dao049221

Comparative susceptibility of veliger larvae of four bivalve mollusks to a Vibrio alginolyticus strain

A. Luna-González, A. N. Maeda-Martínez*, J. C. Sainz, F. Ascencio-Valle

Centro de Investigaciones Biológicas del Noroeste S.C. (CIBNOR), PO Box 128, La Paz, Baja California Sur 23000, Mexico
*Corresponding author. E-mail:

ABSTRACT: The susceptibility of 7 d old veliger larvae of the scallops Argopecten ventricosus and Nodipecten subnodosus, the penshell Atrina maura, and the Pacific oyster Crassostrea gigas to a pathogenic strain of Vibrio alginolyticus was investigated by challenging the larvae with different bacterial concentrations in a semi-static assay. The results indicate that the larvae of the 2 scallop species are more susceptible to the V. alginolyticus strain than those of the oyster and the penshell. Signs of the disease were similar to bacillary necrosis described in previous work. Interspecies differences in susceptibility to pathogens are discussed.


KEY WORDS: Vibrio alginolyticus · Pathogenicity · Vibriosis · Mollusks · Scallops · Pacific oyster · Penshell


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