Veterinary bacteriology: information about important bacteria
|Species/Subspecies:||Yersinia enterocolitica subsp. enterocolitica|
|Etymology:||Genus name: named after the French bacteriologist A.J.E. Yersin, who in 1894 first isolated the bacterium, which causes the plague.|
Species epithet: refers to intestine and colon.
Subspecies epithet: see Species epithet.
|Type Strain:||ATCC 9610 = CCUG 11291 och 12369 = NCTC 12982.|
||Forms small greyish colonies, which do not produce hemolysis on blood agar.|
|Micromorphology:||Motile rods (0.5-0.8 x 1-3 µm) with peritrichous flagella.|
|Gram +/Gram -:||G-|
|Other Enzymes:||Ornithine decarboxylase +, tryptophanase (-) and urease (+)|
|Fermentation of carbohydrates:||Glucose (gas) -, Lactose -, Mannitol +, Rhamnose -, Sorbitol + och Suc +. Cf. other Yersinia spp.|
||Small (1-2 mm in diameter) translucent colonies, which become dark red in the centre ("bull's eye") on CIN-agar.|
|16S rRNA Seq.:|
||Within the genus Yersinia, 20 species have been described, all species belong to the family Enterobacteriaceae.|
|Legislation:||Y. enterocolitica belongs to category B as a potential bioterrorism agent according to NIAID|
|Comment:||Mannitol and a pH indicator (neutral red) are included among other components in the CIN agar|
|Reference(s):||No. 21, 174|
|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 VetBactPublished 2023-03-15. Read more...