Vitellibacter todarodis sp. nov., isolated from intestinal tract of a squid (Todarodes pacificus)

A Gram-stain-negative, non-motile, aerobic and rod-shaped or ovoid bacterial strain, designated MYP2-2^T, was isolated from the intestinal tract of a squid (Todarodes pacificus) collected from the East Sea, South Korea, and subjected to a polyphasic taxonomic study. Strain MYP2-2^T grew optimally at 30-35°C and in the presence of 2.0% (w/v) NaCl. A neighbour-joining phylogenetic tree based on 16S rRNA gene sequences revealed that strain MYP2-2^T belonged to the genus Vitellibacter. Strain MYP2-2^T exhibited 16S rRNA gene sequence similarities of 95.4-96.6% to the type strains of Vitellibacter species and of less than 94.5% to the type strains of other recognized species examined. Strain MYP2-2^T contained menaquinone MK-6 as the predominant respiratory quinone and iso-C_{15: 0} and iso-C_{17: 0} 3-OH as the major fatty acids. The major polar lipids detected in strain MYP2-2^T were phosphatidylethanolamine and one unidentified lipid. The DNA G+C content of strain MYP2-2^T was 41.6 mol%. Differential phenotypic properties, together with its phylogenetic distinctiveness, revealed that strain MYP2-2T is separated from recognized species of the genus Vitellibacter. On the basis of the data presented, strain MYP2-2T is considered to represent a novel species of the genus Vitellibacter, for which the name Vitellibacter todarodis sp. nov. is proposed. The type strain is MYP2-2^T (=KCTC 62141^T=NBRC 113025^T).