|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]
|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-|
|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.|
|Vector:||Brown dog tick(Rhipicephalus sangineus)|
|Disease:||Canine monocytic ehrlichiosis.
|Hosts:||Canids (Canidae). Has also been reported in cats.|
|16S rRNA Seq.:|
||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 .|
|New families introduced within the order Enterobacterales|
The order Enterobacterales (formerly called Enterobacteriales) previously consisted of bacteria with different properties and phylogenetically, these bacteria were far apart. In order for the taxonomy to be more in line with phylogeny, some of these bacteria have, therefore, been sorted into 6 new families.Published 2022-04-13. Read more...