Streptococcus hyovaginalis
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Streptococcaceae, Genus Streptococcus, Streptococcus hyovaginalis  
Devriese et al. 1997.

Ungroupable by Lancefield serological testing.
Gram-positive, nonmotile cocci, grouped in long chains.
Regular, under 0.5 mm in diameter, non-pigmented, translucent colonies. On blood
agar colonies are surrounded by zones of alpha-hemolysis. Growth at 37 ºC. Aerobic,
facultatively anaerobic. Growth is enhanced by incubation in a 5% CO
2-supplemented
atmosphere. Grow on: Trypticase soy agar with 5% sheep blood, Brain heart infusion
agar or broth. No growth in the presence of 6.5% NaCl, on bile–esculin agar or on
Slanetz–Bartley agar.
Isolated from the genital tract of swine (vagina).
Unknown (none).
  1. Devriese LA, et al. Streptococcus hyovaginalis sp. nov. and Streptococcus thoraltensis sp. nov., from the genital tract of sows. Int. J.
    Syst. Bacteriol. 47: 1073-1077, 1997.
  2. Robert A. Whiley and Jeremy M. Hardie, 2009. Genus I. Streptococcus Rosenbach 1884, 22AL. 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, 655-711.
Some biochemical test were performed on API 20 STREP.

Positive results for alkaline phosphatase, alanine phenylalanine, hippurate hydrolysis, N-acetyl-beta-glucosaminidase, beta-
galactosidase, beta-glucuronidase, leucine arylamidase (weak), proline arylamidase, Voges–Proskauer reaction, acid production
from: cellobiose, D-fructose, galactose, D-glucose, N-acetylglucosamine, lactose, maltose, D-mannose, mannitol, salicin, sucrose,
sorbitol & trehalose.

Negative results for alpha-galactosidase, arginine dihydrolase, catalase, esculin hydrolysis, glycyltryptophan arylamidase, beta-
mannosidase, pyrrolidonyl arylamidase, urease, acid production from: D- or L-arabitol, amygdalin, D- or L-arabinose, dulcitol,
erythritol, D- or L- fucose, gluconate, glycerol, glycogen, beta-gentiobiose, inositol, inulin, 2- or 5-ketogluconate, D-lyxose, methyl
alpha-D-mannoside, methyl alpha-D-glucoside, melibiose, melezitose, D-raffinose, rhamnose, L-sorbose, starch, D-tagatose, D-
turanose, pullulan, xylitol, D- or L-xylose & methyl beta-xyloside.

Variable results for acid production from beta-glucosidase, methyl beta-glucopyranoside & ribose.
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