Bacteroides vicugnae sp. nov. isolated from the fecal material of an alpaca.

Two strictly anaerobic, Gram-stain-negative rod-shaped bacterial isolates, A2-P53 ^T and A1-P5, were isolated from an enrichment of fecal material from two alpacas (Vicugna pacos). Based on a comparative 16S rRNA gene sequence analysis, the isolates were assigned to the genus Bacteroides with the highest sequence similarities to Bacteroides koreensis YS-aM39T (A2- P53T 97.7 % and A1-P5 97.9 %). Additionally, the average nucleotide identity and digital DNA-DNA hybridization values between these isolates and their closest relatives within Bacteroides were less than 92.1 % and 49.1 %, respectively. The average nucleotide identity between isolates A2-P53 ^T and A1-P5 was 99.9 %. The predominant cellular fatty acid for isolates A2-P53 ^T and A1-P5 was C _15:0 antesio. The G+C % content of the isolates was 41.7 %. Based on biochemical, phylogenetic, genotypic, and chemotaxonomic criteria, these isolates A2-P53 ^T and A1-P5 represent two individual strains of a novel species within the genus Bacteroides for which the name Bacteroides vicugnae sp. nov. is proposed. The type strain of this species is strain A2-P53 ^T (CCUG 77273 ^T  = CCM 9377 ^T  = NRRL B-65693 ^T ).
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