Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Enterococcaceae, Enterococcus, Enterococcus canis De Graef et al.
Gram-positive slightly elongated cocci that occur in pairs, short chains or small groups.
Colonies on blood agar are circular, smooth and surrounded by narrow, sharply
demarcated zones of alpha-hemolysis. Growth is optimal at 37 ºC, slower at 42, 30
and 25 ºC 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 Svec 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: dulcitol,
glycogen, melibiose, melezitose, raffinose, rhamnose & sorbitol.
Variable results for arginine hydrolysis, acid production from: starch & sucrose.
(c) Costin Stoica