| Riemerella columbina |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacteroidota, Class Flavobacteriia, Order Flavobacteriales, Family Weeksellaceae, Genus Riemerella, Riemerella columbina
Vancanneyt et al. 1999.
Synonym: Riemerella anatipestifer-like.
Vancanneyt et al. 1999.
Synonym: Riemerella anatipestifer-like.
Gram-negative, nonsporulating rods, 0.2-0.5 x 1-2.5 μm, occuring singly, in pairs, or in
short chains. Nonmotile.
short chains. Nonmotile.
Colonies are smooth, greyish-white to beige (Riemerella anatipestifer strains are
nonpigmented). Good growth when incubated aerobically at 37 ºC and
microaerobically at 24, 37 and 42 ºC on Columbia blood agar. No anaerobic growth.
No growth on litmus lactose agar (variable features for R. anatipestifer strains). No
growth on MacConkey agar. Variable haemolysis.
nonpigmented). Good growth when incubated aerobically at 37 ºC and
microaerobically at 24, 37 and 42 ºC on Columbia blood agar. No anaerobic growth.
No growth on litmus lactose agar (variable features for R. anatipestifer strains). No
growth on MacConkey agar. Variable haemolysis.
Isolated from the airsac, lung, palatine cleft, trachea and brain of pigeons.
Involved in respiratory infections, in pigeons, similar to those associated with Reimerella anatipestifer.
- M. Vancanneyt, P. Vandamme, P. Segers, U. Torck, R. Coopman, K. Kersters, and K.-H. Hinz. Riemerella columbina sp. nov., a
bacterium associated with respiratory disease in pigeons. Int J Syst Bacteriol January 1999 49:289-295; - Rubbenstroth D, Hotzel H, Knobloch J, Teske L, Rautenschlein S, Ryll M. Isolation and characterization of atypical Riemerella
columbina strains from pigeons and their differentiation from Riemerella anatipestifer. Veterinary Microbiology , Volume 147 (1)
Elsevier – Jan 10, 2011. - Rubbenstroth D, Ryll M, Hotzel H, Christensen, H, Knobloch JKM, Rautenschlein S and Bisgaard M, 2013. Description of
Riemerella columbipharyngis sp. nov., isolated from the pharynx of healthy domestic pigeons (Columba livia f. domestica), and
emended descriptions of the genus Riemerella, Riemerella anatipestifer and Riemerella columbina. Int J Syst Bact 63, 280-287.
Positive results for acid and alkaline phosphatase, chymotrypsin, catalase, CAMP test, esterase lipase C8, gelatin hydrolysis,
alpha-galactosidase, alpha-glucosidase, leucine arylamidase, lipase, oxidase, valine arylamidase, Voges-Proskauer test, acid
production from dextrin, D-glucose, maltose, and D-mannose.
Negative results for arginine dihydrolase, beta-galactosidase, nitrate reduction, indole production, acid production from trehalose.
Not using malonate as a carbon source. Not assimilated in the API 20NE system: D-glucose, L-arabinose, D-mannose, D-mannitol,
N-acetylglucosamine, maltose, D-gluconate, caprate, adipate, L-malate, citrate or phenyl acetate.
Variable results for cystine arylamidase, esculin hydrolysis, esterase C4, beta-glucosidase, trypsin, chymotrypsin, urease, acid
production from D-fructose and L-sorbose.
alpha-galactosidase, alpha-glucosidase, leucine arylamidase, lipase, oxidase, valine arylamidase, Voges-Proskauer test, acid
production from dextrin, D-glucose, maltose, and D-mannose.
Negative results for arginine dihydrolase, beta-galactosidase, nitrate reduction, indole production, acid production from trehalose.
Not using malonate as a carbon source. Not assimilated in the API 20NE system: D-glucose, L-arabinose, D-mannose, D-mannitol,
N-acetylglucosamine, maltose, D-gluconate, caprate, adipate, L-malate, citrate or phenyl acetate.
Variable results for cystine arylamidase, esculin hydrolysis, esterase C4, beta-glucosidase, trypsin, chymotrypsin, urease, acid
production from D-fructose and L-sorbose.
(c) Costin Stoica
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