Macrococcus equipercicus
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Staphylococcaceae, Genus Macrococcus, Macrococcus equipercicus Kloos
et al. 1998. Old synonym:
Staphylococcus equipercicus  Ballard et al. 1995. Type species of the genus.
Gram positive cocci, nonmotile, nonsporing, (1.4-2.5 μm in diameter). Occur singly or
grouped in pairs or tetrads.
Colonies are slightly convex, entire, butyrous, glistening, opaque, 5-7 mm in diameter,
pale yellow to medium orange.  No hemolysis. Aerobic, no growth anaerobically.  
Optimum temperature 35 ºC. Grow in 7.5% NaCl concentration.
Media: Trypticase Soy Agar ± 5% sheep blood, BHI agar, P agar.
Isolated from horses and ponies' skin. The type strain was isolated from the skin of an Irish thoroughbred horse. Resistant to
novobiocin. Susceptible to lysostaphin.
Not determined. Horse skin inhabitant.
  1. Karl-Heinz Schleifer and Julia A. Bell, 2009. Family VIII. Staphylococcaceae fam. nov.. In: (Eds.) P.D. Vos, G. Garrity, D. Jones,
    N.R. Krieg, W. Ludwig, F.A. Rainey, K.-H. Schleifer, W.B. Whitman. Bergey’s Manual of Systematic Bacteriology, Volume 3: The
    Firmicutes, Springer, 392-426.
  2. Wesley E. Kloos, Deborah N. Ballard, Carol G. George, John A. Webster, Romeo J. Hubner, Wolfgang Ludwig, Karl H.
    Schleifer, Franz Fiedler, and Karin Schubert. Delimiting the genus Staphylococcus through description of Macrococcus
    caseolyticus gen. nov., comb. nov. and Macrococcus equipercicus sp. nov., Macrococcus bovicus sp. nov. and Macrococcus
    carouselicus sp. nov. Int J Syst Bacteriol July 1998 48:859-877.
Positive results for oxidase, catalase, DN-ase, beta-glucosidase, acid production
from mannitol, lactose, D-fructose & glycerol.

Negative results for acetoin production, nitrates reduction, beta-glucosidase, pyrrolidonylarylamidase, alkaline phosphatase,
ornithine-decarboxylase, beta-glucuronidase, beta-galactosidase, acid production from: mannose, D-ribose, sucrose,  raffinose,
xylose, arabinose, cellobiose, salicin, melezitose & turanose.

Variable results for esculin hydrolysis, urease, acid production from: trehalose,  & maltose.
(c) Costin Stoica
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