Staphylococcus caprae
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Staphylococcaceae, Genus Staphylococcus, Staphylococcus caprae  
Devriese et al. 1983.
Gram-positive cocci, 0.8-1.2 μm, nonmotile, nonsporing. Form pairs, chains and
clusters.
Colonies nonpigmented, slightly convex, opaque, and glistening, 5-8 mm diameter.
Hemolytic (delayed reaction). Facultatively anaerobic,  25-45 ºC, 37 ºC optimum.
Growth is much slower at 25 ºC. Grow on media: Nutrient agar or nutrient broth,
Trypticase Soy Agar ± 5% sheep blood, Mueller Hinton agar, Chapman (selective
medium with 75 g/l de NaCl & mannitol).
Isolated rarely, from animals (goats' milk & skin), and humans. Susceptible to Novobiocin.
May produce mastitis in small ruminants,  rarely nosocomial infections in humans (bone and joint sepsis or bacteremia,
endocarditis, urinary tract infections, otitis externa); neonatal bacteremia .
  1. Holt J.G., Krieg N.R., Sneath P.H.A., Staley J.T., Wiliams S.T., 1994. Bergey's Manual of Determinative Bacteriology, Ninth Edition,
    Williams & Wilkins, Baltimore. Group 17, Gram-Positive Cocci, 527-558.
  2. Devriese L.A., Poutrel B., Kilpper-Balz R. & Schleifer K.H.: Staphylococcus gallinarum and Staphylococcus caprae, two new
    species from animals. Int. J. Syst. Bacteriol., 1983, 33, 480-486.
  3. Ross T. L., Fuss E. P., Harrington S. M., Cai M., Perl T. M.,& Merz W. G.: Methicillin-Resistant Staphylococcus caprae in a Neonatal
    IntensiveCare Unit. Journal of Clinical Microbiology, January 2005, p. 363-367, Vol. 43, No. 1.
  4. 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.
Positive results for nitrate reduction, alkaline phosphatase, arginine dihydrolase
urease, acetoin production, deoxyribonuclease agar, catalase, acid production from:
mannose, lactose, trehalose & galactose.

Negative results for oxidase, hyaluronidase, coagulase-rabbit plasma, clumping factor, fibrinolysin, beta-glucosidase, beta-
glucuronidase, beta-galactosidase, caseinase, gelatinase, staphylokinase, Tween 80 hydrolysis, acid production from: amygdalin,
arabinose, arbutin, xylitol, raffinose, xylose, cellobiose, fucose, beta-gentiobiose, mannitol, melibiose, melezitose & turanose.
(c) Costin Stoica
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