Veterinary bacteriology: information about important bacteria
|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 .|