Vibrio ordalii
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Vibrionales, Family Vibrionaceae, Genus Vibrio, Vibrio ordalii  Schiewe
et al. 1982. Is very closely related with
Vibrio anguillarum.

Synonyms: Vibrio sp. RT group,
Beneckea anguillara biotype I , V. anguillarum biotype 2.
Gram negative cells, 2.5-3.0 x 1.0 μm, motile by a single polar flagellum. Not
swarming on complex media. No luminiscence.
Can grow in nutrient broth with: 1% NaCl & 6% NaCl. No growth in 0% NaCl, 8%
NaCl, 10% NaCl & 12% NaCl. Growth temperature 30 ºC, no growth at  4 ºC or 35 ºC.
Grows slowly, forming visible colonies on trypticase soy agar after 4-6 days; growth is
enhanced by the adition of NaCl (is a halophilic species).
Isolated from fish. Sensible to O/129 vibriostatic agent (10 & 150 µg).
Fish pathogen isolated from diseased salmonid fish, from ayu (Plecoglassus altivelis) and rockfish fingerlings (Sebastes schlegeli)
  1. J.J. Farmer, M. Janda, 2004. Family I. Vibrionaceae. In:  Bergey’s Manual of Systematic Bacteriology, Second edition,Vol two, part
    B, George M. Garrity (Editor-in-Chief), pp. 491-546.
  2. J. G.Holt et al., 1994. Group 5 Facultatively anaerobic Gram-negative rods. Subgroup 2 Family Vibrionaceae. In: Begey’s Manual of
    Determinative Bacteriology, 9-th edition, Williams & Wilkins. pp. 190-194.
Positive results for gelatin hydrolysis (1% NaCl, 22 ºC), nitrate reduction to nitrite,
oxidase, acid production from D-glucose, maltose, sucrose & trehalose.

Negative results for indole production (Heart Infusion Broth, 1% NaCl), Voges-Proskauer (1% NaCl), citrate utilization (Simmons),
urea hydrolysis, arginine (1% NaCl), lysine (1% NaCl), ornithine (1% NaCl), lipase, ONPG test, gas production from D-glucose, acid
production from: D-adonitol, L-arabinose, D-arabitol, cellobiose, dulcitol, D-galactose, glycerol, myo-inositol, lactose, D-mannitol,
D-mannose, melibiose, raffinose, L-rhamnose, salicin, D-sorbitol & D-xylose.
(c) Costin Stoica
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