Campylobacter lari
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
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
bipolar flagellum.
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 CO
2-
enriched atmosphere.
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
chloride medium.
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.
Undetermined.
  1. 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.
  2. 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 & H
2S 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
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