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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology
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Species/Subspecies: Streptococcus canis
Etymology: Genus name: twisted (like a chain) cocci (coccus means a grain or a berry and referrs to any spherical microorganism).
Species epithet: from a dog.
Significance:S. canis is often isolated from dogs and cats, but it can also cause bovine mastitis. The bacterium causes sporadic cases of mastitis in certain heards and larger outbreaks in other herds by transmission between cows at milking.
  [Of minor importance]   
Taxonomy:
Phylum
Firmicutes
Class
Bacilli
Order
Lactobacillales
Family
Streptococcaceae 
Genus
Streptococcus
Type Strain: STR-T1 = ATCC 43496 = CCUG 27661
Macromorphology (smell):
Streptococcus canis  Streptococcus canis  Streptococcus canis  
Streptococcus canis  
Medium sized β-hemolytic colonies (1-2 mm in diameter) after incubation for 24 h at 37°C on blood agar.
Micromorphology: Cocci, which appear in pairs or short chains.
Gram +/Gram -:
Streptococcus canis  
G+
Metabolism: Facultatively anaerobic
Catalase/Oxidase:-/
Other Enzymes: Esculinase +, β-galactosidas +, hippuricase -, hyaluronidase -, urease -.
Biochemical Tests: Voges-Proskauer -
Fermentation of carbohydrates:
D-glucoselactosemaltoseL-rhamnosesucrose
+++-+
L-arabinosecellobioseD-mannitolsalicintrehalose
-+-+(-)
glycerolinulinraffinoseD-sorbitolstarch
w---+
Other carbohydrates: amygdalin -, ribose +
Microbiological tests:
Streptococcus canis  
CAMP negative
Spec. Char.:
Hosts: Dog, cattle, cat and rat.
Disease (Swedish):Reservoir: Hund, katt och råtta: opportunistiska infektioner, t.ex. abscesser, lymfadenit, mastit, prostatit, pyoderma och pyometra.
ko: mastit.
Disease (English):Dog, cat and rat: opportunistic infections, e.g. abscesses, lymphadenitis, mastitis, prostatitis, pyoderma, pyometra and "puppy strangles".
cow: mastitis.
Clinical Picture:
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
DQ303184  ATCC 43496T 1 462  

Taxonomy/phylogeny:
Streptococcus canis  
About 100 species have been described within the genus Streptococcus. Many species within the genus Enterococcus have earlier been classified as streptococci and, thus, they are closely related. S. canis is closely related to S. pyogenes.
Comment:Belongs to Lancefield's group G streptcocci.
Updated:2015-12-02

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