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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Bacteroides fragilis
Etymology: Genus name: rod-shaped
Species epithet: fragile (has very fragile colonies under certain conditions)
Significance:  [Important]   
Taxonomy:
Phylum
Bacteroidetes
Class
Bacteroidia
Order
Bacteroidales
Family
Bacteroidaceae 
Genus
Bacteroides
Type Strain: ATCC 25285 = CCUG 4856 = NCTC 9343
Macromorphology (smell): Small, circular and transluscent colonies (1-3 mm in diameter). Can in rare cases give hemolysis on blood agar.
Micromorphology: Rod shaped and nonmotile cells (0.6 x 1.5-4.5 µm), which appear singly or in pairs. Have rounded ends.
Gram +/Gram -:G-
Metabolism: Anaerobic, but aerotolerant.
Catalase/Oxidase:+/?
Other Enzymes: Tryptophanase -
Fermentation of carbohydrates: Arabinose -, glucose +, lactose +, maltoe +, rhamnose -, salicin -, sucose +, trehalose -
Spec. Char.:
Disease:Abscesses in different organs, diarrhea
Hosts: Cattle, horses, pigs, sheep, cats, dogs, humans
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_003228 ATCC 25285 = NCTC 9343 5 205 140  

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
X83935 (T) 1436 

Taxonomy/phylogeny:
 
About 45 species have been described within genus Bacteroides. Many species, which were earlier affiliated with genus Bacteroides, have now been transfered to genus Porphyromonas or genus Prevotella. These three genera are related and belong to the order Bacteroidales.
Updated:2016-03-06

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