Vibrio comitans
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Vibrionales, Family Vibrionaceae, Genus Vibrio, Vibrio comitans  
Sawabe, Fujimura, Niwa and Aono, 2007.
Gram-negative, rod-shaped cells, with rounded ends, 0.5-1.0 x 1.2-2.0 μm. Non-
motile, nonflagellated. No endospores or capsules are formed.
Can grow in nutrient broth with: 1% & 6% NaCl. No growth in 0% NaCl. Growth occur
at  4 to 30 ºC. No growth at 37 ºC.
Colonies on agar (ZoBell 2216E) are smooth, beige, convex. Colonies are green on  
TCBS agar (selective media:
Thiosulfate-Citrate-Bile salts-Sucrose).
Facultatively anaerobic, mesophilic, neutrophilic, chemo-organotroph. No
luminescence. No requirement for organic growth factors.
Isolated from the guts of wild-caught Japanese abalone (Haliotis discus discus, H. gigantea and H. madaka).
Susceptible to vibriostatic agent O/129 (150 mg).
Unknown.
  1. T. Sawabe, Y. Fujimura,K.  Niwa and H. Aono, 2007. Vibrio comitans sp. nov., Vibrio rarus sp. nov. and Vibrio inusitatus sp.nov.,
    from the gut of the abalones Haliotis discus discus, H. gigantea, H. madaka and H. rufescens.IJSEM 57, 916-922.
Positive results for oxidase, catalase, ONPG, hydrolysis of alginate, nitrate reduction,
acid production from: D-glucose (without gas), D-mannitol & maltose.
Can assimilate: D-gluconate, D-galactose, cellobiose, D-glucuronate, pyruvate, L-glutamate, D-fructose, D-glucose, maltose, D-
xylose, D-mannitol, D-glucosamine, N-acetylglucosamine, fumarate & succinate.

Negative results for amylase, gelatinase, chitinase, lipase, lysine decarboxylase, ornithine decarboxylase, arginine dihydrolase,
indole, acetoin production, β-galactosidase, hydrolysis of starch, hydrolysis of agar, hydrolysis of Tween 80, acid production from:
sucrose, D-sorbitol, L-arabinose, inositol & L-rhamnose.
No assimilation of D-mannose, sucrose, D-sorbitol, 2-oxoglutarate, melibiose, lactose, trehalose, putrescine, acetate, L-tyrosine,
propionate, L-proline, meso-erythritol, DL-malate & aconitate.

Variable results for DN-ase & citrate utilization.
(c) Costin Stoica
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