Species/Subspecies: | Histophilus somni | ||||||||||
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Etymology: | Genus name: tissue friend. Species epithet: of sleep (refers to one of the disease conditions). | ||||||||||
Significance: | [Important] | ||||||||||
Alternative Species Name(s): | Haemophilus agni, Histophilus ovis, Haemophilus somnus, Haemophilus somnifer | ||||||||||
Taxonomy: | Class Gammaproteobacteria Order Pasteurellales Family Pasteurellaceae Genus Histophilus |
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Type Strain: | 8025 = ATCC 43625 = CCUG 36157. | ||||||||||
Macromorphology (smell):
| Some strains are haemolytic. Forms small colonies (0.2-0.5 mm in diameter), which contain a yellow pigment. | ||||||||||
Micromorphology: | Small nonmotile rods | ||||||||||
Gram +/Gram -: | G- | ||||||||||
Metabolism: | Facultatively anaerobic | ||||||||||
Catalase/Oxidase: | -/+ | ||||||||||
Other Enzymes: | Esculinase -, tryptophanase (+), urease -. | ||||||||||
Fermentation of carbohydrates: | D-glucose ? lactose ? maltose + L-rhamnose - sucrose - L-arabinose v cellobiose ? D-mannitol ? salicin ? trehalose + glycerol - inulin - raffinose - D-sorbitol ? starch ? |
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Spec. Char.: | |||||||||||
Disease: | ¨
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Genome Sequence: |
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16S rRNA Seq.: |
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Taxonomy/phylogeny:
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Only one species have been described within genus Histophilus, which is relatively close to Nicoletella semolina, which also is a single species within its genus. | ||||||||||
Comment: | X- and V-factor are not requirements for growth in contrast to bacteria belonging to the closely related genus Haemophilus. | ||||||||||
Reference(s): | No. 63 | ||||||||||
Updated: | 2021-09-26 |
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