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Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Streptococcus canis
Categories: Zoonotic; causes hemolysis
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):
     
 
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 -:
 
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.:
Disease:Dog, cat and rat: opportunistic infections, e.g. abscesses, lymphadenitis, mastitis, prostatitis, pyoderma, pyometra and "puppy strangles".
cow: mastitis.
Hosts: Dog, cattle, cat and rat.
Clinical Picture:
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
DQ303184  ATCC 43496T 1 462  

Taxonomy/phylogeny:
 
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:2020-10-28

News

The revised taxonomy of the mollicutes

The revised taxonomy of mollicutes (mycoplasmas) has now been introduced on VetBact, which means that many of the species have been given new genus names or moved to another higher taxon. 

Published 2021-11-25. Read more...

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