Vibrio atlanticus sp. nov. and Vibrio artabrorum sp. nov. isolated from the clams Ruditapes philippinarum and Ruditapes decussatus

摘要

Facultative anaerobic marine bacteria isolated from cultured clams Ruditapes decussatus and Ruditapes philippinarum were previously investigated using AFLP and 16S rRNA gene sequences analyses. The isolates formed two AFLP clusters and belonged to the genus Vibrio, more precisely to the Splendidus clade. In this study, phylogenetic analyses based on sequences of the housekeeping genes rpoA, rpoD, pyrH, atpA and recA supported their inclusion in that clade forming two well differentiated groups with respect to the rest of the species within the clade, and confirmed they formed two groups, separated from the rest of the species of the clade. DNA-DNA hybridizations demonstrated that the isolates constitute two novel Vibrio species, which can be phenotypically differentiated from their closest relatives. The names Vibrio atlanticus sp. nov. and Vibrio artabrorum sp. nov. are proposed, with Vb 11.11T (=CECT 7223T =LMG 24300T) and Vb 11.8T (=CECT 7226T =LMG 23865T) as the type strains, respectively.