Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Streptococcaceae, Genus Streptococcus, Streptococcus
marimammalium Lawson et al. 2005.
Lancefield group C.
Gram-positive cocci, grouped in pairs or short chains, nonspore-forming.
Grey-white, 0.2-0.3 mm in diameter colonies after 24 hours incubation on sheep blood
agar. Initially nonhemolytic, become beta-haemolytic after 3 days. Facultatively
anaerobic, growth at 37.0 ºC. Growth on : Trypticase soy agar with sheep blood.
Two isolates from seals (Halichoerus grypus and Phoca vitulina).
Unknown (one lung isolate from dead seal).
- Lawson P.A., Foster G., Falsen E. & Collins M.D.: Streptococcus marimammalium sp. nov., isolated from seals. Int. J. Syst. Evol.
Microbiol., 2005, 55, 271-274.
Some characters were tested on API (Biomerieux) kits.
Positive results for alanine phenylalanine proline arylamidase, acid phosphatase
(weak reaction), chymotrypsin, leucine arylamidase, valine arylamidase positive and acid production from lactose.
Negative results for esculin, alpha- & beta-glucosidase, beta-glucuronidase, catalase, hippurate hydrolysis, Voges-Proskauer
reaction, acid production from: L-arabinose, D-arabitol, cyclodextrin, glycogen, inulin, mannitol, melibiose, melezitose, methyl
beta-D-glucopyranoside, pullulan, raffinose, ribose, sorbitol, starch, sucrose, D-tagatose and trehalose.
Variable results for arginine dihydrolase, alkaline phosphatase, beta-galactosidase, urease and acid production from maltose.
(c) Costin Stoica