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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]   
Alternative 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:
HostsDiseaseClinical picture
HumansInfection that may result in septicemiaSerious infection especially after dog bites, but also after cat bites and scratches. The bacteria is included in the commensal flora in the mouth of dogs (and cats).
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:2022-03-07

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