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Vibrios in hatchery cultures of the razor clam, Solen marginatus (Pulteney)

Authors

  • S Prado,

    Corresponding author
    1. Departamento de Microbiología y Parasitología, Facultad de Biología – CIBUS, Universidad de Santiago de Compostela, Santiago de Compostela, A Coruña, Spain
    • Correspondence S Prado, Departamento de Microbiología y Parasitología, Facultad de Biología, CIBUS, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, A Coruña, Spain

      (e-mail: susana.prado@usc.es)

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  • J Dubert,

    1. Departamento de Microbiología y Parasitología, Facultad de Biología – CIBUS, Universidad de Santiago de Compostela, Santiago de Compostela, A Coruña, Spain
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  • F da Costa,

    1. Centro de Investigacións Mariñas (CIMA), Ribadeo, Consellería do Medio Rural e do Mar, Xunta de Galicia, Ribadeo, Lugo, Spain
    Current affiliation:
    1. Ifremer, Laboratoire des Sciences de l'Environnement Marin (UMR 6539, LEMAR), Plouzané, France
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  • D Martínez-Patiño,

    1. Centro de Investigacións Mariñas (CIMA), Ribadeo, Consellería do Medio Rural e do Mar, Xunta de Galicia, Ribadeo, Lugo, Spain
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  • J L Barja

    1. Departamento de Microbiología y Parasitología, Facultad de Biología – CIBUS, Universidad de Santiago de Compostela, Santiago de Compostela, A Coruña, Spain
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Abstract

Hatchery culture of the razor clam, Solen marginatus (Pulteney), has recently been developed in Galicia (NW Spain). However, recurrent episodes of mortalities of larval and post-larval cultures have been recorded during the course of various studies. The disease signs were similar to those described for other bivalve species in outbreaks caused by bacteria of the genus Vibrio. In this article, we present the results of microbiological monitoring of two batches of razor clams with different survival rates. All fermentative isolates were identified as members of the Splendidus clade within the genus Vibrio. Some of these isolates, identified as Vibrio splendidus-like, were clearly associated with the batch suffering mortalities, indicating their possible role as pathogens. Similar strains were found in the broodstock, suggesting vertical transmission of these bacteria. This is the first study of the microbiota associated with hatchery culture of S. marginatus, and the results will provide useful information for the optimization of a protocol for hatchery culture of this bivalve species.

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