| Riemerella columbipharyngis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacteroidota, Class Flavobacteriia, Order Flavobacteriales, Family Weeksellaceae, Genus Riemerella, Riemerella
columbipharyngis Rubbenstroth, Ryll, Hotzel, Christensen, Knobloch, Rautenschlein and Bisgaard, 2013.
columbipharyngis Rubbenstroth, Ryll, Hotzel, Christensen, Knobloch, Rautenschlein and Bisgaard, 2013.
Gram-negative, non-sporulating rods, 0.2-0.5 / 1-2.5 μm. Nonmotile.
Colonies are smooth, non-pigmented, 1-2 mm in diameter after 24 h of incubation on
5% sheep blood Columbia agar under micro-aerophilic conditions (5-10% CO2) at 37
ºC. Can grow at 30-41 ºC, optimally at 36-37 ºC. CAMP test is negative. Grow
aerobically, microaerobically and anaerobically. No growth on MacConkey agar.
5% sheep blood Columbia agar under micro-aerophilic conditions (5-10% CO2) at 37
ºC. Can grow at 30-41 ºC, optimally at 36-37 ºC. CAMP test is negative. Grow
aerobically, microaerobically and anaerobically. No growth on MacConkey agar.
Isolated from pharynx of apparently healthy domestic or feral pigeons (Columbia livia f. domestica).
Sensitive to chloramphenicol, trimethoprim, sulfamethoxazol, ampicillin, amoxycillin, erythromycin, lincomycin, enrofloxacin,
tetracycline, doxycycline. Resistant to aminoglycosides (neomycin, gentamicin, spectinomycin), polypeptide antibiotics (colistin
sulphate, polymyxin B) and sulphonamide.
Sensitive to chloramphenicol, trimethoprim, sulfamethoxazol, ampicillin, amoxycillin, erythromycin, lincomycin, enrofloxacin,
tetracycline, doxycycline. Resistant to aminoglycosides (neomycin, gentamicin, spectinomycin), polypeptide antibiotics (colistin
sulphate, polymyxin B) and sulphonamide.
Undetermined.
- 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, arginine dihydrolase, catalase, chymotrypsin, esterase lipase C8, gelatinase,
alpha-galactosidase, alpha-glucosidase, lipase C14, oxidase, Voges-Proskauer test, acid production from: dextrin, D-glucose,
maltose and D-mannose.
Negative results for Simmons citrate, cystine arylamidase, aesculin hydrolysis, esterase C4, beta-galactosidase, beta-glucosidase,
H2S production, indole production, leucine arylamidase, lysine decarboxylase, nitrate reduction, ornithine decarboxylase, trypsin,
urease, valine arylamidase, acid production from: D-fructose and trehalose.
Description is based mostly on API results: API ZYM (0533052025/5500050000), API 20NE (0010004), ID-32E (00200020002).
alpha-galactosidase, alpha-glucosidase, lipase C14, oxidase, Voges-Proskauer test, acid production from: dextrin, D-glucose,
maltose and D-mannose.
Negative results for Simmons citrate, cystine arylamidase, aesculin hydrolysis, esterase C4, beta-galactosidase, beta-glucosidase,
H2S production, indole production, leucine arylamidase, lysine decarboxylase, nitrate reduction, ornithine decarboxylase, trypsin,
urease, valine arylamidase, acid production from: D-fructose and trehalose.
Description is based mostly on API results: API ZYM (0533052025/5500050000), API 20NE (0010004), ID-32E (00200020002).
(c) Costin Stoica
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