| Species/Subspecies: | Bacteroides fragilis | ||||||||
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| Etymology: | Genus name: rod-shaped Species epithet: fragile (has very fragile colonies under certain conditions) | ||||||||
| Significance: | [Important] | ||||||||
| Taxonomy: | Class Bacteroidia Order Bacteroidales Family Bacteroidaceae Genus Bacteroides |
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| 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.: | |||||||||
| Special Media: | |||||||||
| Disease: | Abscesses in different organs, diarrhea |
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| Hosts: | Cattle, horses, pigs, sheep, cats, dogs, humans | ||||||||
| Clinical Picture: | |||||||||
| Genome Sequence: |
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| 16S rRNA Seq.: |
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| Taxonomy/phylogeny:
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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: | 2023-03-15 |