Bifidobacterium simiarum
Taxonomy
Morphology
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Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,  
Bifidobacterium simiarum
Modesto, Puglisi, Bonetti, Michelini, Spiezio, Sandri, Sgobarti, Morelli  and Mattarelli,  2020.
Gram-positive rods of various shapes, forming a branched structure with ‘Y’ at the
both side. Non-motile. Non-spore-forming.
Colonies are white, smooth, opaque, 1.5-2.0 mm in diameter after 3 days of
anaerobic incubation on TPY agar. Non-haemolytic. Can grow at 22-48 ºC, optimally
at 37 ºC, not at 20 ºC. Grows at pH 4.0- 8.0, optimally at pH 7.0. Can grow under
aerophilic and microaerophilic conditions.
Isolated from faeces of an adult emperor tamarin (Saguinus imperator).
Undetermined.
  1. Modesto M, Puglisi E, Bonetti A,  Michelini S, Spiezio C, Sandri C, Sgobarti B, Morelli L and Mattarelli P, 2018. Bifidobacterium
    primatium sp. nov., Bifidobacterium scaligerum sp. nov., Bifidobacterium falsineum sp. nov. and Bifidobacterium simiarum sp. nov.:
    Four novel taxa  isolated from the faeces of the cotton top tamarin (Saguinus oedipus) and the emperor tamarin (Saguinus
    imperator). Syst Appl Microbiol 41, 593-603.
Description is based mostly on API 50CH and API Rapid ID32 (bioMerieux) results.

Positive results for alkaline phosphatase (weak), alpha-arabinosidase, arginine dihydrolase, arginine arylamidase, aesculin
hydrolysis, alpha- and beta-galactosidase, alpha- and beta-glucosidase, glycine arylamidase, histidine arylamidase, proline
arylamidase, serine arylamidase (weak), acid production from amygdalin, L-arabinose, arbutin, cellobiose, D-fructose, L- fucose
(weak), D-galactose, gentibiose (weak), D-glucose, inulin (weak), lactose, maltose, D-mannose, melezitose (weak), melibiose, methyl
alpha-D-glucopyranoside (weak), D-ribose, salicin, sucrose, trehalose, turanose, and D-xylose.

Negative results for catalase, indole production, leucine arylamidase, nitrate reduction, oxidase, phenylalanine arylamidase, tyrosine
arylamidase, urease, acid production from D-adonitol, D- and L-arabitol, D-arabinose, dulcitol, erythritol, D-fucose, glycerol, gluconate,
glycogen, inositol, 2- and 5-ketogluconate, D-lyxose, D-mannitol, methyl alpha-D-manopyranoside, methyl beta-D-xylopyranoside,
N-acetylglucosamine, rhamnose, raffinose, D-sorbitol, L-sorbose, starch, D-tagatose, xylitol, and L-xylose.
(c) Costin Stoica
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