Phylum Proteobacteria, Class Gammaproteobacteria, Order Vibrionales, Family Vibrionaceae, Genus Vibrio, Vibrio rarus Sawabe,
Fujimura, Niwa and Aono, 2007.
One strain tested, the type strain RW22T.
Gram-negative, rod-shaped cells, with rounded ends, 0.5-1.0 x 1.2-2.0 μm. Nonmotile,
nonflagellated. No endospores or capsules are formed.
Can grow in nutrient broth with 6% NaCl. No growth in 0% or 1% NaCl. Growth occur
at 15 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 agar). Facultatively anaerobic, mesophilic, neutrophilic,
chemo-organotroph. No luminescence.
Isolated from the gut of the Californian red abalone (Haliotis rufescens).
Susceptible to vibriostatic agent O/157.
- 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 nitrate reduction, hydrolysis of alginate, oxidase, catalase, indole, acid production from: D-glucose (without gas),
D-mannitol & maltose.
Can utilize: D-mannose, sucrose, D-gluconate, cellobiose, D-sorbitol, acetate, pyruvate, L-glutamate, L-proline, D-glucose, maltose,
D-xylose, D-mannitol, D-glucosamine, N-acetylglucosamine, fumarate & succinate.
Negative results for amylase, gelatinase, chitinase, lipase, DNase, lysine decarboxylase, ornithine decarboxylase, arginine
dihydrolase, acetoin production, beta-galactosidase, hydrolysis of starch, hydrolysis of agar, hydrolysis of Tween 80, acid production
from:sucrose, D-sorbitol, L-arabinose, inositol & L-rhamnose.
No utilization of: glycerol, 2-oxoglutarate, D-galactose, melibiose, lactose, D-glucuronate, trehalose, putrescine,
gamma-aminobutyrate, L-tyrosine, propionate, D-fructose, citrate, meso-erythritol, DL-malate & aconitate.
(c) Costin Stoica