Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Streptococcaceae, Genus Streptococcus, Streptococcus halichoeri
Lawson et al. 2004.
Lancefield group B.
Gram-positive cocci, grouped in pairs and short chains.
Colonies are white, nonhemolytic and 0.5 mm in diameter after 24 h incubation on
sheep blood agar. Growth at 37 ºC. Aerobic, facultatively anaerobic. Can grow on
Trypticase soy agar with 5% sheep blood.
Isolated from grey seals (Halichoerus grypus).
- Paul A. Lawson, Geoffrey Foster, Enevold Falsen, Nick Davison and Matthew D. Collins: Streptococcus halichoeri sp. nov.,
isolated from grey seals (Halichoerus grypus). Int. J. Syst. Evol. Microbiol., 2004, 54, 1753-1756.
Positive results for arginine dihydrolase, alkaline phosphatase, Voges-Proskauer
reaction, acid production from: cyclodextrin, maltose, mannitol, pullulan & ribose.
Negative results for alpha-galactosidase, beta-galactosidase, alpha-glucosidase, beta-glucuronidase, urease, esculin hydrolysis,
hippurate hydrolysis, acid production from: arabinose, glycogen, inulin, mannose, melibiose, melezitose, methyl
beta-D-glucopyranoside, raffinose, sorbitol, starch, sucrose, D-tagatose & trehalose.
Acid production from lactose is variable.
(c) Costin Stoica