Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Campylobacteraceae, Genus Campylobacter,
Campylobacter lari subsp. concheus Debruyne et al. 2009,
Campylobacter lari subsp. lari (Benjamin et al. 1984) Debruyne et al. 2009.
Gram-negative, small, curved, S-shaped, or helical rods, with rounded ends, 0.3 x
1.7-2.4 μm long. Coccoid forms appear when exposed to air. Motile by a single
Colonies are translucent, convex, 1-1.5 mm in diameter on blood agar after 48 hours.
Alpha-hemolytic. Swarming may occur.
Grows microaerobically in the absence of hydrogen. Anaerobic growth is observed in
the presence of trimethylamine N-oxide hydrochloride. Will not grow in air or in a CO2-
Grows at 37 ºC, 42 ºC, but not at 25 ºC. Grow in the presence of 1.0–1.5% ox-bile,
0.05% sodium fluoride, 0.02% safranin, 1% glycine, 2%NaCl, 32 mg/l cephalothin,
and 64 mg/l cefoperazone. Usually grow on and reduce, 0.04% triphenyltetrazolium
Isolated from intestinal contents of seagulls and horse, from the faeces of wild birds, dogs and chickens, from river water, and
shellfish; rarely from human diarrheic feces.
- 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.
- Lies Debruyne, Stephen L. W. On, Evie De Brandt, and Peter Vandamme. Novel Campylobacter lari-like bacteria from humans
and molluscs: description of Campylobacter peloridis sp. nov., Campylobacter lari subsp. concheus subsp. nov. and
Campylobacter lari subsp. lari subsp. nov. Int J Syst Evol Microbiol May 2009 59:1126-1132.
Positive results for catalase, nitrate reduction, selenite reduction & oxidase.
Negative results for indoxyl acetate hydrolysis, hippurate hydrolysis & H2S production on TSI. No carbohydrates fermentation.
Urea hydrolysis is variable.
Campylobacter lari subsp. concheus strains can be distinguished from C. lari subsp. lari by their inability to grow on media containing
0.05% safranin and susceptibility to nalidixic acid (32mg/l).
(c) Costin Stoica