A Probiotic Potential of Enterococcus gallinarum against Vibrio anguillarum Infection

Abstract

The aim of this study was to look for new potential probiotic bacterial strains for marine aquaculture. Only one of 195 isolates from the gut of cultured fish including sea bass Dicentrarchus labrax, gilthead sea bream Sparus aurata, meagre Argyrosomus regius and sole Solea solea showed a strong inhibitory effect against Vibrio anguillarum. This isolate, identified as Enterococcus gallinarum, also produced a moderated protective effect against V. anguillarum infection of sea bass. Intraperitoneal injection with the isolate showed no pathogenicity in sea bass. Thus, the isolate designated E. gallinarum L1 can have a potential of probiotic bacterium.