VetBact
VetBact logo

VetBact

Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Ehrlichia canis
Etymology: Genus name: named after the German bacteriologist Paul Ehrlich (1854-1915).
Species epithet: of dog.
Significance:The disease is normally not found in Sweden, as the brown dog tick requires a warmer climate in order to survive. Sick dogs may, however, occur after importing or stay abroad.
  [Of minor importance]   
Taxonomy:
Phylum
Proteobacteria
Class
Alphaproteobacteria
Order
Rickettsiales
Family
Anaplasmataceae 
Genus
Ehrlichia
Type Strain: Oklahoma
Macromorphology (smell): Cannot be cultivaqted on cell free substrates (e.g. agar plates).
Micromorphology: Coccoid to elipsoid cells (about 0.5 µm in diameter), which are nonmotile. A morula (see below) can be up to 4 µm in diameter.
Gram +/Gram -:G-
Catalase/Oxidase:
Fermentation of carbohydrates: Is not used for identification of Ehrlichia spp. Furthermore, many intracellular bacteria lack enzymes for carbohydrate metabolism because of evolutionary gene reduction.
Spec. Char.:
Vector: Brown dog tick(Rhipicephalus sangineus)
Reservoir: Canids
Disease:Canine monocytic ehrlichiosis.
Hosts: Canids (Canidae). Has also been reported in cats.
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_007354 Jake 1 315 030 (1c + 0) 

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
M73221 (T) 1433 

Taxonomy/phylogeny:
 
Seven species have been described within the genus Ehrlichia, which is most closely related to the genus Anaplasma.
Comment:Strictly intracellular and grows in inclusions (morulae) in monocytes. Morula refers to the mulberry-like structure (Morus= mulberry in Latin) of the inclusions .
Updated:2015-12-16

News

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...
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...

Recently Updated

Recent blog posts

Most recent comment


Swedish University of Agricultural Sciences