@article{AKAYLI_ALBAYRAK_ÜRKÜ_ÇANAK_YÖRÜK_2015, title={Characterization of Micrococcus luteus and Bacillus marisflavi Recovered from Common Dentex (Dentex dentex) Larviculture System}, volume={17}, url={https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/13110}, DOI={10.12681/mms.1322}, abstractNote={<p>In this manuscript, thirty yellow-pigmented Gram-positive bacteria were isolated from natural intestine microflora and from sea water around the marine cage of a rearing tank of common dentex (<em>Dentex dentex</em>), in the Aegean Sea on the Turkish coast and were characterized. Eighteen isolates were assigned to the species <em>Micrococcus luteus</em>, the other twelve to the species <em>Bacillus marisflavi</em>. Eight representative strains, six from <em>B. marisflavi</em> and two from <em>M. luteus</em>, were chosen for further 16S rDNA analyses. A pathogenicity assay for the isolated bacterial<br /> strains was carried out in rainbow trout and it evidenced absence of pathogenicity in the tested strains. The isolated strains were tested for in vitro antagonistic activity against <em>Listonella anguillarum</em>, a pathogen bacterium diffused in Mediterranean aquaculture and affecting various fish species. The isolated bacterial strains showed antagonistic activity against the pathogenic bacterium, suggesting a possible role of isolates as probiotics. In this study, for the first time, bacterial strains of the species <em>B. marisflavi</em>, known as an environmental species, were recovered in the gut microbiota of a healthy fish. The use of the isolates characterized in this study, mainly the yellow-pigmented bacterium, is suggested as possible probiotics to improve fish health, along with alternative methods of maintaining a healthy environment.</p>}, number={1}, journal={Mediterranean Marine Science}, author={AKAYLI, T. and ALBAYRAK, G. and ÜRKÜ, Ç. and ÇANAK, Ö. and YÖRÜK, E.}, year={2015}, month={Sep.}, pages={163–169} }