DAO 33:119-122 (1998)  -  doi:10.3354/dao033119

Pathogenic effects of Vibrio alginolyticus on larvae and postlarvae of the red abalone Haliotis rufescens

Casandra Anguiano-Beltrán1, Ricardo Searcy-Bernal1,*, M. Leonardo Lizárraga-Partida2

1Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, Apartado Postal 453, Ensenada, B.C. 22860, México
2Centro de Investigación Científica y Educación Superior de Ensenada, Apartado Postal 2732, Ensenada, B.C. 22860, México
*Addressee for correspondence. E-mail:

The pathogenicity of Vibrio alginolyticus on Haliotis rufescens veliger larvae and 4 d old postlarvae was tested in small-scale static bioassays with different bacterial concentrations (102 to 106 cells ml-1). Larval and postlarval survival were evaluated at 24 and 48 h. Results suggest that V. alginolyticus can cause massive mortality in larvae of H. rufescens within 24 h at concentrations above 105 cell ml-1, while a concentration of 106 cell ml-1 is required to produce the same effect in abalone postlarvae. The potential application of these results to hatchery conditions is discussed.


Abalone · Pathology · Vibrio alginolyticus


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