|Etymology:||Genus name: named after the German bacteriologist Paul Ehrlich (1854-1915).|
Species epithet: of ruminants.
|Significance:||The disease occurs in Africa and the Caribbean, where it causes serious problems in the livestock sector.
[Of minor importance]
|Alternative Species Name(s):||Cowdria ruminantium|
|Macromorphology (smell):||Cannot be cultivated on cell free substrates (e.g. agar plates).|
|Micromorphology:||Coccoid to elipsoid cells (about 0,5 µm i diameter), which are nonmotile. A morula 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:||Tick (Amblyomma variegatum and A. cajennensis).|
|Disease:||Heartwater or cowdriosis.
|Hosts:||Cattle, sheep, goats and other ruminants.|
|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 names of taxa within the classification category phylum|
During October 2021, an article was published by A. Oren och G.M. Garrity, in which new names are proposed for a number of taxa within the classification category phylum. This has resulted in many discussions in social media about whether it was really necessary to make these changes, which have created confusion among microbiologists and other professionals who come into contact with bacteriology.Published 2022-09-28. Read more...