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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Pasteurella caballi
Category: In the normal flora
Etymology: Genus name: named after Louis Pasteur.
Species epithet: of a horse.
Significance:  [Of minor importance]   
Taxonomy:
Phylum
Proteobacteria
Class
Gammaproteobacteria
Order
Pasteurellales
Family
Pasteurellaceae 
Genus
Pasteurella
Type Strain: 83851 = ATCC 49197 = CCUG 28833.
Macromorphology (smell): Small grayish-yellow colonies (1-1.5 mm in diameter), which does not give hemolysis on blood agar.
Micromorphology: Non-motile rods (0.8-1.0 x 1.3-1.9 µm), which appear singly or in pairs.
Gram +/Gram -:G-
Metabolism: Facultatively anaerobic
Catalase/Oxidase:-/+
Other Enzymes: Esculinase -, ornithine decarboxylase +, tryptophanase -, urease -
Biochemical Tests: Citrate -, methyl red - (i.e. does not have mixed acid fermentation), Voges-Proskauer -,
Fermentation of carbohydrates:
D-glucose
+
lactose
+
maltose
?
L-rhamnose
?
sucrose
+
L-arabinose
?
cellobiose
-
D-mannitol
?
salicin
-
trehalose
-
glycerol
?
inulin
-
raffinose
?
D-sorbitol
?
starch
-
Other carbohydrates: Dulcitol -, D-fructose +, D-galactose +, D-mannose +.
Gas production: D-Glukos +.
Spec. Char.:
Disease:Is an opportunist, which belongs to the normal flora of the upper respiratory tract. May cause respiratory tract infections. Wound infection in human has been reported.
Hosts: Horse, pig, human
Clinical Picture:
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AY362918 ATCC 49197T 1 362  

Taxonomy/phylogeny:
 
About 15 species have been described within genus Pasteurella, but the relationship between members within the closely related genera Actinobacillus, Haemophilus, Mannheimia and Pasteurella is very uncertain since none of these genera forms monophyletic clusters.
Updated:2020-10-28

News

New names of bacterial phyla

The taxonomic category phylum was previously not regulated by the International Code of Nomenclature of Prokaryotes (ICNP), but now this has changed and it was decided to revise the names of bacterial phyla. All phyla must be written in italics (which has been done on VetBact also before) and have the ending -ota.

Published 2023-03-01. Read more...
The taxonomy of chlamydias

Species within the family Chlamydiaceae were previously divided into two genera Chlamydia and Chlamydophila. However, the differences between these two genera were not that great and many research groups have not accepted this division. Therefore, the genus Chlamydophila has been returned to the genus Chlamydia and this change has now been incorporated in VetBact

Published 2023-03-15. Read more...

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