Phylum Proteobacteria, Class Gammaproteobacteria, Order Aeromonadales, Family Aeromonadaceae, Genus Aeromonas,
Aeromonas molluscorum Minana-Galbis et al. 2004.
Old synonym: Aeromonas sp. phenon VI Minana-Galbis et al. 2002.
Gram-negative, rod-shaped cells, 1.2-2 x 0.5-1 µm. Motile by a polar flagellum.
Colonies on TSA are 3-4 mm in diameter, translucent to opaque, circular and beige in
colour after 48 h at 25 ºC. Brown diffusible pigment is not produced. Growth occurs at
4-37 ºC, but not at 40.5 ºC; optimal growth temperature 25-30 ºC. Can grow in the
presence of 0-3% NaCl, but not at 6% NaCl. Can grow at ph 9.0 but not pH 4.5. Grows
on MacConkey agar.
Isolated from wedge-shells (Donax trunculus) obtained from a retail market in Barcelona (Spain). Resistant to vibriostatic agent
O/129 (150 µg). Resistant to ampicillin (10 µg) (except strain 431E), erythromycin (15 µg) and penicillin G (10 µg).
- D. Minana-Galbis, M. Farfan, J.G. Loren, M.C. Fuste. Biochemical identification and numerical taxonomy of Aeromonas spp.
isolated from environmental and clinical samples in Spain. Journal of Applied Microbiology Volume 93, Issue 3, pages 420–430,
- David Minana-Galbis, Maribel Farfan, M. Carme Fuste, and J. Gaspar Loren. Aeromonas molluscorum sp. nov., isolated from
bivalve molluscs. Int J Syst Evol Microbiol November 2004 54:2073-2078.
Positive results for catalase, oxidase, nitrates reduction, methyl red test, ONPG,
arginine dihydrolase, DNase, esculin hydrolysis, gelatin hydrolysis, citrate utilization,
acid production from: glucose (without gas production), L-arabinose, dextrin, D-galactose, glycerol, D-mannitol, D-mannose,
D-sucrose & D-trehalose.
Negative results for indole production, urea hydrolysis, H2S production from cysteine and thiosulfate, elastase, starch hydrolysis,
Voges-Proskauer test, ornithine decarboxylase, lysine decarboxylase, acid production from: lactose, D-melibiose, D-raffinose,
L-rhamnose, sorbitol & D-xylose.
Variable results for acetate utilization, acid production from: arbutin & D-cellobiose.
(c) Costin Stoica