| Staphylococcus haemolyticus |
Staphylococcus haemolyticus on Sheep blood agar
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Bacillales, Family Staphylococcaceae, Genus Staphylococcus, Staphylococcus
haemolyticus Schleifer and Kloos 1975.
haemolyticus Schleifer and Kloos 1975.
Gram-positive cocci, nonmotile, nonsporing, 0.8-1.3 μm in diameter, grouped in pairs
and tetrads.
and tetrads.
Colonies are nonpigmented or yellowish, smooth, glistening, opaque, with entire
margins, 5-9 mm in diameter and haemolytic. Hemolysis may be weak sometimes.
Facultatively anaerobic, grow better aerobically. Temperature range 18 to 40 ºC
(optimum 34-35 ºC). Used media: Trypticase Soy Agar + 5% sheep blood, Mueller
Hinton agar, P agar. Grows well in medium containing 10% NaCl; variable and poor
growth at 15% NaCl.
margins, 5-9 mm in diameter and haemolytic. Hemolysis may be weak sometimes.
Facultatively anaerobic, grow better aerobically. Temperature range 18 to 40 ºC
(optimum 34-35 ºC). Used media: Trypticase Soy Agar + 5% sheep blood, Mueller
Hinton agar, P agar. Grows well in medium containing 10% NaCl; variable and poor
growth at 15% NaCl.
Isolated from human & animal skin. Susceptible to novobiocin and lysostaphin. Resistant to lysozyme.
Commensal of the skin, rarely cause infections in immunocompromised organisms (septicemia, peritonitis, otitis, and urinary tract
infections). Known for its resistance to many antibiotics. Has occasionally been associated with mastitis in cattle.
infections). Known for its resistance to many antibiotics. Has occasionally been associated with mastitis in cattle.
- 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. - Schleifer K.H. & Kloos W.E.: Isolation and characterization of staphylococci from human skin. Amended descriptions of
Staphylococcus epidermidis and Staphylococcus saprophyticus and descriptions of three new species: Staphylococcus cohnii,
Staphylococcus haemolyticus, and Staphylococcus xylosus. International Journal of Systematic Bacteriology, 1975, 25, 50-61. - 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 arginine dihydrolase, catalase, acid production from glucose,
glycerol, maltose,sucrose and trehalose.
Negative results for alkaline phosphatase, urease, oxidase, coagulase-rabbit
plasma, clumping factor, heat-stable nuclease, beta-galactosidase, acid production
from mannose, xylitol, raffinose, xylose, arabinose, cellobiose, erythritol, erythrose,
fucose, gentiobiose, salicin and melezitose.
Variable results for acetoin production, beta-glucosidase, beta-glucuronidase,
deoxyribonuclease, nitrate reduction, acid production from: lactose, mannitol,
fructose, turanose and ribose.
glycerol, maltose,sucrose and trehalose.
Negative results for alkaline phosphatase, urease, oxidase, coagulase-rabbit
plasma, clumping factor, heat-stable nuclease, beta-galactosidase, acid production
from mannose, xylitol, raffinose, xylose, arabinose, cellobiose, erythritol, erythrose,
fucose, gentiobiose, salicin and melezitose.
Variable results for acetoin production, beta-glucosidase, beta-glucuronidase,
deoxyribonuclease, nitrate reduction, acid production from: lactose, mannitol,
fructose, turanose and ribose.
(c) Costin Stoica
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