Description:
<jats:p>As a prerequisite for use in marine aquaculture, two immobilisation systems were developed by employing the probiotic bacterium<jats:italic>Pseudoalteromonas</jats:italic>sp. strain MLms_gA3. Their impact on the survivability of the fish pathogen<jats:italic>Vibrio anguillarum</jats:italic>was explored. Probiotic bacteria either grown as a biofilm on ceramic tiles or embedded in alginate beads were added to sterile artificial seawater that contained the fish pathogen. While immobilisation on ceramics followed a recently developed protocol, a medium allowing for alginate microencapsulation was newly developed. Anti-<jats:italic>Vibrio</jats:italic>activities were obtained with both immobilisation systems. The viable cell counts of<jats:italic>V. anguillarum</jats:italic>constantly decreased within the first two weeks of the treatments evidencing the potential of the immobilisation systems for providing probiotic-based protection against this pathogen.</jats:p>