Phylum Proteobacteria, Class Gammaproteobacteria, Order Vibrionales, Family Vibrionaceae, Genus Vibrio, Vibrio gigantis Roux,
Goubet, Thompson, Faury, Gay, Swings and Saulnier, 2005.
Gram-negative, curved cells, 2-3 x 1 µm, motile by at least one polar flagellum.
Colonies on TSA are translucent, non-swarming , rounded with entire margins.
Colonies are yellow, translucent, 5 mm in diameter on TCBS agar.
Facultatively anaerobic. Can grow in nutrient broth with: 2%, 4% & 6% (variable) NaCl.
No growth in 0% or 8% NaCl. Growth temparature 4 -20 ºC. No growth at 35 or 40 ºC.
Isolated from the haemolymph of a diseased cultured oysters (Crassostrea gigas) in France.
Sensitive to vibriostatic agent O/129.
Unknown. May be involved in the oyster summer mortality when associated with other vibrios.
- F. Le Roux, A. Goubet , F. L. Thompson, N. Faury, M. Gay, J. Swings and D. Saulnier, 2005. Vibrio gigantis sp. nov., isolated from
the haemolymph of cultured oysters (Crassostrea gigas).IJSEM 55, 2251-2255.
Positive results for arginine dihydrolase, indole, nitrate reduction, gelatinase, oxidase,
catalase, utilization of: glucose, melibiose, amygdalin, glycerol, ribose, galactose, D-
mannose, D-fructose, mannitol, Nacetylglucosamine, aesculin, cellobiose, trehalose,
starch & glycogen.
Negative results for lysine decarboxylase, ornithine decarboxylase, beta-galactosidase, urease, Voges-Proskauer, H2S, utilization of:
citrate, sucrose, inositol, sorbitol, rhamnose, erythritol, arabinose, xylose, adonitol, methyl beta-D-xyloside, L-sorbose, dulcitol, methyl
alpha-D-mannoside, methyl alpha-D-glucoside, arbutin, salicin, lactose, inulin, melezitose, D-raffinose, xylitol, beta-gentiobiose,
D-turanose, D-lyxose, D-tagatose, fucose & arabitol.
(c) Costin Stoica