Marine Biotechnology

, Volume 1, Issue 1, pp 52–59 | Cite as

The Benefit of a Roseobacter Species on the Survival of Scallop Larvae

  • C.  Ruiz-Ponte
  • J.F.  Samain
  • J.L.  Sánchez
  • J.L.  Nicolas
Article

Abstract

A marine strain (BS107), identified as a Roseobacter species, was antagonistic to Vibrio species on agar plates. Results suggested that the inhibitory effect was displayed only in the presence of another bacterium. Quantification of the antibacterial activity showed that 48-hour-coculture supernatants from BS107 and another bacterial strain (V. anguillarum 408) reached the highest titers of bacterial inhibition. The antibacterial substance was also liberated when supernatants from V. anguillarum 408 were added to pure cultures of the inhibition-productive bacterium. The presence of a proteinaceous molecule may induce BS107 to display the inhibitory effect. The antibacterial substance was sensitive to trypsin (8000 U/ml) and stable at 100°C. Cell extracts of the isolate BS107 (106 cells/ml) significantly enhanced scallop larval survival, thus being beneficial to the rearing process.

Key words:Roseobacter species, scallop larvae, antibacterial activity, probiotic 

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Copyright information

© Springer-Verlag New York Inc. 1999

Authors and Affiliations

  • C.  Ruiz-Ponte
    • 1
  • J.F.  Samain
    • 1
  • J.L.  Sánchez
    • 2
  • J.L.  Nicolas
    • 1
  1. 1.Laboratoire de Physiologie des Invertebrés, DRV, IFREMER, Centre de Brest, B.P. 70, 29280 Plouzané, FranceFrance
  2. 2.Departmento de Bioquímica y Biologia Molecular, Universidad de Santiago de Compostela, 15706 Santiago de Compostela, SpainSpain

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