Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Campylobacteraceae, Genus Arcobacter,
Arcobacter cryaerophilus (Neill et al. 1985) Vandamme et al. 1991.
Two subgroups (group 1A & 1B) have been described.
Gram-negative, curved cells, 0.2–0.4 x 1–3 μm. Rapid darting motility. Motile by means
of a single polar flagellum at one or both ends of the cell.
Colonies are 1-3 mm in diameter, convex with an entire edge, dirty-yellow-pigmented,
after 48 hours inbation. Strains will grow on nutrient agar, charcoal-based and potato
starch media, and on media containing KMnO4, 0.001% sodium arsenite, 32 mg/l
cephalothin, 100 U/l 5-fluorouracil, 0.02% safranin & 2% NaCl. No growth in media
with 1% glycine. Optimum growth temperature 25 ºC. No growth at 42 ºC.
Most strains of subgroup 2 grow under aerobic or microaerobic conditions at 37 ºC, in
contrast with subgroup 1 strains.
Isolated from human bacteremia and diarrhea; from chicken carcasses; from bovine, ovine, and porcine abortions; from porcine
feces, and from mastitis in cattle.
Uncertain. Associated with enteritis in humans; mastitis and abortion in animals.
- Don J. Brenner and J.J. Farmer III, 2001. Family I. Campylobacteraceae. In: Bergey’s Manual of Systematic Bacteriology, Second
edition,Vol 2, part C, George M. Garrity (Editor-in-Chief), pp 1145-1168.
- Euzeby J.P., List of Prokaryotic names with Standing in Nomenclature-Genus Arcobacter, https://www.bacterio.cict.
Positive results for nitrate reduction, catalase, oxidase and indoxyl acetate hydrolysis.
Negative results for urease, selenite reduction, hippurate hydrolysis, and H2S production on TSI. No carbohydrates fermentation.
(c) Costin Stoica