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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Firmicutes => Bacilli => Lactobacillales => Enterococcaceae => Enterococcus => Enterococcus canis De Graef et al. 2003.
Gram positive slightly elongated cocci that occur in pairs, short chains or small groups.
Non-motile.
Non-motile.
Colonies on blood agar are circular, smooth and surrounded by narrow, sharply
demarcated zones of alpha-haemolysis. Growth is optimal at 37 °C, slower at 42, 30
and 25 °C and unaffected by the absence or presence of 5% CO2.
Grow in 6.5% NaCl broth. On Edward’s Streptococcus selective medium, aesculin-
degrading colonies are formed. Blackening occurs on aesculin bile agar. No growth
is seen after 1 day on Slanetz–Bartley medium, but after 2 days, pinpoint-sized
colonies are formed without tetrazoliumchloride reduction.
demarcated zones of alpha-haemolysis. Growth is optimal at 37 °C, slower at 42, 30
and 25 °C and unaffected by the absence or presence of 5% CO2.
Grow in 6.5% NaCl broth. On Edward’s Streptococcus selective medium, aesculin-
degrading colonies are formed. Blackening occurs on aesculin bile agar. No growth
is seen after 1 day on Slanetz–Bartley medium, but after 2 days, pinpoint-sized
colonies are formed without tetrazoliumchloride reduction.
Isolated from anal swabs and chronic otitis externa in dogs.
May be associated with otitis externa in dogs as a contaminant.
- De Graef, E. M., Devriese, L. A., Vancanneyt, M., Baele, M., Collins, M. D., Lefebvre, K., Swings, J., Haesebrouck, F. Description
of Enterococcus canis sp. nov. from dogs and reclassification of Enterococcus porcinus Teixeira et al. 2001 as a junior
synonym of Enterococcus villorum Vancanneyt et al. 2001. Int J Syst Evol Microbiol 2003 53: 1069-1074. - Pavel Švec and Luc A. Devriese, 2009: Genus I. Enterococcus (ex Thiercelin and Jouhaud 1903) Schleifer and Kilpper-Bälz
1984, 32VP in Bergey’s Manual of Systematic Bacteriology, Second Edition, Volume Three, Vos, P.D.; Garrity, G.; Jones, D.;
Krieg, N.R.; Ludwig, W.; Rainey, F.A.; Schleifer, K.-H.; Whitman, W.B. (Eds.), pp 594-606.
Positive results for leucine arylamidase, pyrrolidonyl arylamidase, acid production from:
glycerol, L-arabinose, ribose, galactose, D-glucose, D-fructose, D-mannose, mannitol,
N-acetylglucosamine, amygdalin, arbutin, salicin, cellobiose, maltose, lactose, beta-gentiobiose, gluconate & 2-ketogluconate
Negative results for hippurate, beta-glucuronidase, beta-galactosidase, alkaline phosphatase, acid production from: sorbitol,
melibiose, raffinose & rhamnose.
Variable results for arginine hydrolysis.
glycerol, L-arabinose, ribose, galactose, D-glucose, D-fructose, D-mannose, mannitol,
N-acetylglucosamine, amygdalin, arbutin, salicin, cellobiose, maltose, lactose, beta-gentiobiose, gluconate & 2-ketogluconate
Negative results for hippurate, beta-glucuronidase, beta-galactosidase, alkaline phosphatase, acid production from: sorbitol,
melibiose, raffinose & rhamnose.
Variable results for arginine hydrolysis.
(c) Costin Stoica
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