RT Journal Article SR Electronic(1) A1 Irisawa, Tomohiro A1 Saputra, Sugiyono A1 Kitahara, Maki A1 Sakamoto, Mitsuo A1 Sulistiani A1 Yulineri, Titin A1 Dinoto, Achmad A1 Ohkuma, MoriyaYR 2016 T1 Bacteroides caecicola sp. nov. and Bacteroides gallinaceum sp. nov., isolated from the caecum of an Indonesian chicken JF International Journal of Systematic and Evolutionary Microbiology, VO 66 IS 3 SP 1431 OP 1437 DO https://doi.org/10.1099/ijsem.0.000899 PB Microbiology Society, SN 1466-5034, AB Six strains of anaerobic bacteria, C13EG70T, C13EG118, C13EG186T, C13GAMG5, C13GAMG28 and C13GAMG40, were isolated from the caecum of a healthy chicken bred in Bogor, Indonesia. Phylogenetic analysis showed the isolates were separated into two groups. Group I (C13EG70T and C13EG118) showed nearly identical 16S rRNA gene sequences (99.9 % sequence similarity). Group II (C13EG186T, C13GAMG5, C13GAMG28 and C13GAMG40) showed nearly identical 16S rRNA gene sequences (>99.4 % sequence similarity). The isolates showed low 16S rRNA gene sequence similarities to recognized species of the genus Bacteroides. High gene sequence similarities were found between type strains (C13EG70T and C13EG186T) and Bacteroides salanitronis JCM 13657T (87.9, 91.5 %, respectively). Physiological, biochemical and genotypic characteristics demonstrated that these strains could be separated from the type strain of B. salanitronis. It is concluded that Group I and Group II represent novel species. Two novel species of the genus Bacteroides are proposed as Bacteroides caecicola sp. nov. (type strain C13EG70T = LIPI12-4-Ck732T = JSAT12-4-Ck732T = InaCC B449T = NBRC 110958T) and Bacteroides gallinaceum sp. nov. (type strain C13EG186T = LIPI12-4-Ck844T = JSAT12-4-Ck884T = InaCC B451T = NBRC 110963T)., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.000899