May be a cause of arthritis, osteolysis, myositis and spinal meningitis in Channel Catfish broodstock.
Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Streptococcaceae, Genus Streptococcus, Streptococcus ictaluri
Shewmaker et al. 2007.
Gram-positive cocci, grouped in pairs or short chains.
Colonies on 5% sheep blood Columbia agar are nonhemolytic and nonpigmented.
Growth temperature 25-35 ºC, optimal temperature for growth was 30 ºC. No growth
at 45 ºC. No growth in 6.5% NaCl broth.
Isolated from channel catfish (Ictalurus punctatus). Habitat is unknown. Susceptible to vancomycin.
- P. Lynn Shewmaker, Alvin C. Camus, Tim Bailiff, Arnold G. Steigerwalt, Roger E. Morey and Maria da Glória S. Carvalho:
Streptococcus ictaluri sp. nov., isolated from Channel Catfish Ictalurus punctatus broodstock. IJSEM July 2007 vol. 57 no. 7 1603-
Positive results for pyrrolidonylarylamidase, leucine aminopeptidase, alkaline
phosphatase, alanine-phenylalanineproline arylamidase, pyroglutamic acid
arylamidase, acid production from: maltose, and ribose.
Negative results for catalase, hippurate hydrolysis, esculin hydrolysis, pyruvate utilization, acetoin production, arginine dihydrolase,
urease, beta-glucosidase, beta-galactosidase, beta-glucuronidase, alpha-galactosidase, N-acetyl-beta-glucosaminidase,
glycine-L-tryptophan arylamidase, beta-mannosidase urease, acid production from: mannitol, sorbitol, lactose, trehalose, raffinose,
sucrose, L-arabinose, D-arabitol, cyclodextrin, glycogen, pullulan, melibiose, melezitose, methyl-beta-D-glucopyranoside, and
(c) Costin Stoica