Staphylococcus pseudintermedius
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Staphylococcaceae, Genus Staphylococcus, Staphylococcus
pseudintermedius  
Devriese et al. 2005. Closely related to S. intermedius & S. delphini.
Gram-positive cocci, nonmotile, nonsporing.
Rounded, opaque colonies, surrounded by double zone hemolysis. Facultatively
anaerobic, 28-37 ºC. Media: Trypticase Soy Yeast extract Agar ± 5% sheep blood,
Trypticase Soy Yeast extract  Broth.
Isolated from cat (lungs), dog, horse and  parrot specimens. Sensible to novobiocin and polymyxin B. Resistant to deferoxamine.
Uncertain pathogenicity (although coagulase, DN-ase & haemolysins are positive). One report of canine pyoderma in Brasil. Another
S. pseudintermedius strain was isolated from canine purulent skin infection in Romania (admin note).
  1. Devriese L.A., Vancanneyt M., Baele M., Vaneechoutte M., De Graef E., Snauwaert C., Cleenwerck I., Dawyndt P., Swings J.,
    Decostere A. & Haesebrouck F.: Staphylococcus pseudintermedius sp. nov., a coagulase-positive species from animals. Int. J.
    Syst. Evol. Microbiol., 2005, 55, 1569-1573.
  2. Celso Pianta, Sergio Jose de Oliveira, Luiz Cesar Bello Fallvena, Anamaria Telles Esmeraldino, Vilson Benedito da Silva Jr.:
    Staphylococcal canine pyoderma: species identification and drug sensitivity. Revista de Ciencias Agroveterinarias, Lages, v.5, n.1,
    p. 60-63, 2006.
Positive results for nitrate reduction, arginine dihydrolase, urease, acetoin production,
DN-ase, catalase, heat-stable nuclease, pyrrolidonyl arylamidase, acid production
from: fructose, galactose, mannose, ribose, sucrose & trehalose.

Negative results for oxidase, clumping factor, fibrinolysin, beta-glucuronidase,
arabinose, cellobiose, erythritol, fucose, melezitose, amygdalin, arbutin, aesculin,
salicin, D-raffinose, starch, glycogen, 2- or 5-ketogluconate, xylitol & xylose.

Variable results for alkaline phosphatase, beta-glucosidase, beta-galactosidase, acid production from: lactose, mannitol &
turanose.
(c) Costin Stoica
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