Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Campylobacteraceae, Genus Arcobacter,
Arcobacter cibarius Houf et al. 2005.
Gram-negative, slightly curved cells, 0.5 x 1.5 μm. Motile by means of a polar flagellum.
Colonies are non-haemolytic, 1-2 mm in diameter, whitish, low convex, non-swarming,
smooth-rounded and entire margins on blood agar. Translucent, 1-2 mm colonies on
Arcobacter selective agar. Variable growth on MacConkey agar and Campylobacter
charcoal-deoxycholate base media.
Grows on media containing 0.02-0.05 safranin, 32 mg/l carbenicillin, 64 mg/l
cefoperazone, 0.032% methyl orange & 0.1% sodium deoxycholate.
No growth on media containing 1.0% glycine, 2–4% NaCl or 0.2% pyronin.
Variable growth on media containing basic fuchsin, crystal violet, Janus green, sodium
fluoride, 0.04% triphenyl-tetrazolium chloride, 0.1% KMnO4, 0.001% sodium arsenite &
32 mg/L nalidixic acid.
Microaerophilic, weak growth is obtained in anaerobic conditions. Optimum growth
temperature 18-22 ºC. No growth is obtained at 37 ºC in aerobic conditions; some
strains grow at 25 ºC aerobically. Growth at 42 ºC is negative.
Isolated from broiler carcasses (skin).
- Kurt Houf, Stephen L. W. On, Tom Coenye, Jan Mast, Jan Van Hoof, and Peter Vandamme. Arcobacter cibarius sp. nov., isolated
from broiler carcasses. Int J Syst Evol Microbiol March 2005 55:713-717.
Positive results for oxidase & indoxyl acetate hydrolysis.
Negative results for nitrate reduction, urease, alkaline phosphatase, selenite reduction, hippurate hydrolysis, DN-ase, & H2S
production on TSI. No carbohydrates fermentation.
Variable results for catalase.
(c) Costin Stoica