Arcobacter vandammei sp. nov., isolated from the rectal mucus of a healthy pig

A study on the polyphasic taxonomic classification of an Arcobacter strain, R-73987 T , isolated from the rectal mucus of a porcine intestinal tract, was performed. Phylogenetic analysis based on the 16S rRNA gene sequence revealed that the strain could be assigned to the genus Arcobacter and suggested that strain R-73987 T belongs to a novel undescribed species. Comparative analysis of the rpoB gene sequence confirmed the findings. Arcobacter faecis LMG 28519 T was identified as its closest neighbour in a multigene analysis based on 107 protein- encoding genes. Further, whole-genome sequence comparisons by means of average nucleotide identity and in silico DNA–DNA hybridization between the genome of strain R-73987 T and the genomes of validly named Arcobacter species resulted in values below 95–96 and 70 %, respectively. In addition, a phenotypic analysis further corroborated the conclusion that strain R-73987 T represents a novel Arcobacter species, for which the name Arcobacter vandammei sp. nov. is proposed. The type strain is R-73987 T (=LMG 31429 T =CCUG 75005 T ). This appears to be the first Arcobacter species recovered from porcine intestinal mucus.