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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology
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Species/Subspecies: Capnocytophaga canimorsus
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.
  [Bacteria in the normal flora, which can sometimes cause disease]   
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 ┬Ám). 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.:
Hosts: Dogs and cats.
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.
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:2020-05-20

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