Probiotic treatment by indigenous bacteria decreases mortality without disturbing the natural microbiota of Salvelinus fontinalis

This study investigated the influence of a probiotic treatment on the survival and microbiota of brook charr, focusing on its disturbance of the natural microbiota

S├ębastien Boutin

2013

Scholarcy highlights

  • During the last decades, the interest on host-bacteria interactions has greatly increased
  • This study focused on the influence of a probiotic treatment on the natural microbiota of Brook charr, especially on the disturbance of the natural microbiota
  • This study clearly shows that the indigenous strain chosen for the probiotic treatment did not disturb the natural fish skin microbiota, but acted directly through the production system to control the growth of the pathogen, and, as a consequence, to enhance fish survival
  • The aim of this study was to monitor the effect of a probiotic treatment on both the natural microbiota of Brook charr skin mucus and the surrounding water microflora
  • It is not surprising to detect this bacterial genus in fish skin mucus
  • We can hypothesize that Brook charr coevolved with this bacterial genus to ensure protection by the bacteria in exchange of nutrients offered by the host
  • This first analysis of the influence of this probiotic strain on natural microflora of Brook charr associated with the previous study showing differential effect on survival clearly shows that probiotics interact with the pathogen and with the host and his microbiota because each family responded differently to the treatment

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