| Campylobacter armoricus |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Epsilonproteobacteria, Order Campylobacterales, Family Campylobacteraceae,
Genus Campylobacter, Campylobacter armoricus Boukerb et al. 2019.
Genus Campylobacter, Campylobacter armoricus Boukerb et al. 2019.
Gram-negative, curved rods, 0.3 x 2.5 µm. Coccoidal cells are observed in old cultures. Motile. Swarming on solid media was
noted for the human isolates. Non-encapsulated. Non-spore-forming.
noted for the human isolates. Non-encapsulated. Non-spore-forming.
After incubation on Columbia agar + 5% sheep blood in a microaerobic atmosphere
at 42 ºC for 48h, colonies are glossy and greyish, slightly convex, and round with
smooth margins. Older colonies display a grey metallic surface. Pigments are not
produced. Haemolysis is not produced on blood agar. Does not require atmospheric
hydrogen. Growth occurs on blood agar (Chocolate agar or TSA supplemented with
5% sheep or horse blood) at both 37 and 42 ºC under microaerobic culture conditions
and at 37 ºC under anaerobic conditions. No growth is observed at 37 ºC under
aerobiosis and at 25 ºC under microaerobic conditions. Growth under microaerobic
conditions is observed on Columbia agar supplemented with horse or sheep blood
containing 1.0% glycine or 1.0% bile but not on Columbia agar containing 2.0% NaCl.
Variable growth on Columbia agar containing 0.4% TTC or 0.1% selenite.
at 42 ºC for 48h, colonies are glossy and greyish, slightly convex, and round with
smooth margins. Older colonies display a grey metallic surface. Pigments are not
produced. Haemolysis is not produced on blood agar. Does not require atmospheric
hydrogen. Growth occurs on blood agar (Chocolate agar or TSA supplemented with
5% sheep or horse blood) at both 37 and 42 ºC under microaerobic culture conditions
and at 37 ºC under anaerobic conditions. No growth is observed at 37 ºC under
aerobiosis and at 25 ºC under microaerobic conditions. Growth under microaerobic
conditions is observed on Columbia agar supplemented with horse or sheep blood
containing 1.0% glycine or 1.0% bile but not on Columbia agar containing 2.0% NaCl.
Variable growth on Columbia agar containing 0.4% TTC or 0.1% selenite.
Isolated from surface water samples and human stools.
Resistant to cephalothin. Susceptible to nalidixic acid.
Resistant to cephalothin. Susceptible to nalidixic acid.
Three strains were isolated from stools of humans displaying gastroenteritis.
- Boukerb AM, Penny C, Serghine J, Walczak C, Cauchie HM, Miller WG, Losch S, Ragimbeau C, Mossong J, Megraud F, et al.
Campylobacter armoricus sp. nov., a novel member of the Campylobacter lari group isolated from surface water and stools from
humans with enteric infection. Int J Syst Evol Microbiol 2019; 69:3969-3979.
Positive results for catalase, oxidase and urea hydrolysis.
Negative results for alkaline phosphatase, hippurate hydolysis, indoxyl acetate hydrolysis and nitrate reduction.
Variable reduction of triphenyltetrazolium chloride (TTC).
Negative results for alkaline phosphatase, hippurate hydolysis, indoxyl acetate hydrolysis and nitrate reduction.
Variable reduction of triphenyltetrazolium chloride (TTC).
(c) Costin Stoica
| Antibiogram |
| Encyclopedia |
| Culture media |
| Biochemical tests |
| Stainings |
| Images |
| Movies |
| Articles |
| Identification |
| Software |
| R E G N U M PROKARYOTAE |
| Back |