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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Capnocytophaga canimorsus
Categories: Zoonotic; motile; in the normal flora; primarily of interest in human medicin
Etymology: Genus name: bacteria that require carbon dioxide and are related to the bacteria of the genus Cytophaga.
Species epithet: from a dog bite.
Significance:Mainly of human medical interest, but also of importance in veterinary medicine as it occurs in the normal mouth flora of the dog and cat.
  [Important]   
Old Species Name(s):Dysgonic fermenter 2 (DF-2).
Taxonomy:
Phylum
Bacteroidetes
Class
Flavobacteriia
Order
Flavobacteriales
Family
Flavobacteriaceae 
Genus
Capnocytophaga
Type Strain: 7120 = ATCC 35979 = NCTC 12242.
Macromorphology (smell): Grows slowly and after 24 hours they can form small yellowish colonies (up to 1 mm in diameter).
Micromorphology: Rod shaped (ca 4 x 0.5 µm). The bacterium has no flagella, but can glide on surfaces.
Gram +/Gram -:G-
Metabolism: Facultatively anaerobic
Catalase/Oxidase:+/+
Fermentation of carbohydrates:
D-glucoselactosemaltoseL-rhamnosesucrose
+++?-
L-arabinosecellobioseD-mannitolsalicintrehalose
?(-)-??
glycerolinulinraffinoseD-sorbitolstarch
?--??
C. canimorsus does not ferment inulin, raffinose and sucrose, which differentiates it from many closely related species.
Spec. Char.:
Disease:The bacterium is part of the normal mouth flora of dogs and cats, but can cause serious human infections, especially after dog bites. The infection may result in sepsis.
Hosts: Dogs and cats.
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
 Cc5 2 571 406  

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
X97246 ATCC 35979T 1 423  

Taxonomy/phylogeny: Eleven species have been described within the genus Capnocytophaga. and this genus is closely related to the genera Flavobacterium and Riemerella.
Reference(s): No. 142, 143
Updated:2020-11-05

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