Veterinary bacteriology: information about important bacteria
|Categories:||Causes hemolysis; motile; primarily of interest in human medicin|
|Etymology:||Genus name: short spiral|
Species epithet: from Aalborg.
|Significance:||[Of minor importance]|
|Macromorphology (smell):||Weak hemolysis on blood agar.|
|Micromorphology:||Thin (0.2 x 1.7-6 µm), spiral shaped and motile. Have 8-10 periplasmic flagella (endoflagella or (axial filaments) per cell.|
|Gram +/Gram -:||G- (Uppträder som G-, men har en annan typ av cellvägg).|
|Metabolism:||Anaerobic, but aerotolerant.|
|Other Enzymes:||Tryptophanase -, α-galactosidase -, β-glucosidase -|
|Disease:||Human intestinal spirocheaetosis (HIS).
|Clinical Picture:||Chronic diarrhoea, rectal bleeding and abdominal pain.|
|16S rRNA Seq.:|
||Seven species with standing in nomenclature has been described within genus Brachyspira. About 10 additional species have been reported, but their names have not been approved. Some of these species have been included in the phylogenetic trees and their names are given within quotation marks (see Fig. 97:5 and 6). All species within the genus Brachyspira are very closely related, but "B. corvi", B. aalborgi and B. pilosicoli differ significantly from the other species.|
|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...