Veterinary bacteriology: information about important bacteria
|Species/Subspecies:||Campylobacter hyointestinalis subsp. lawsonii|
|Etymology:||Genus name: a curved rod. |
Species epithet: from a hog's intestine.
Subspecies epithet: in honor of the Brittish bacteriologist Gordon H.K. Lawson.
|Significance:||[Of minor importance]|
|Type Strain:||CHY 5 = CCUG 34538 = NCTC 12901.|
|Macromorphology (smell):||Small circular and convex colonies (1.5-2.0 mm in diameter) after 48 h. Many strains give hemolysis on blld agar.|
|Micromorphology:||Loosely spiraled and bent rods (0.2 x 1.42 µm.|
|Gram +/Gram -:||G -|
|Other Enzymes:||Hippuricase - (hippurat -), urease -|
|Biochemical Tests:||Hydrogen sulfide (H2S) (+)|
|Fermentation of carbohydrates:||Campylobacter spp. can neither ferment nor oxidize carbohydrates.|
|Disease:||The bacterium has been isolated from the stomach of pigs, but pathogenicity has not been shown.
|16S rRNA Seq.:|
||About 40 species have been described within in the genus Campylobacter and some of these are further divided into subspecies. This genus is closely related to the following genera: Sulfurospirillum, Arcobacter and Helicobacter. C. hyointestinalis is closely related to C. fetus and C. coli.|
|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...