Veterinary bacteriology: information about important bacteria
|Categories:||Causes hemolysis; spore forming; motile|
|Etymology:||Genus name: a small spindle. |
Species epithet: blood-dissolving, hemolytic.
|Significance:||Is not important in Sweden, but in the USA and in South America.
[Of minor importance]
|Alternative Species Name(s):||Clostridium novyi typ D|
|Type Strain:||ATCC 9650 = NCTC 13022|
||Form small colonies (1-3 mm i diameter), which can easily float together to form a continuous carpet on the plate (the bacteria "swarm"). Give strong hemolysis on blood agar.|
|Micromorphology:||Large motile rods (0.6-1.6 x 1.9-17.3 µm), which have peritrichous flagella. Form oval subterminal spores, which result in swollen cells.|
|Gram +/Gram -:||G+, but it is difficult to get good result upon gram staining of old cultures.|
|Other Enzymes:||Esculinase -, lecithinase +, tryptophanase +|
|Fermentation of carbohydrates:||
Other carbohydrates: Fructose v, galactose -, mannose v, ribose v, xylose -.
|Spec. Char.:||Optimal growth temperature: 37°C.|
|Disease:||Bacillary haemoglobinuria in cattle (= redwater).
|Hosts:||Cattle and other ruminants|
|Clinical Picture:||Abdominal pain, anemia, dehydration, fever.|
|16S rRNA Seq.:|
||About 180 differens species have been descibed within genus Clostridium. C. haemolyticum is very closely related (phylogenetically) to C. botulinum group III and C. novyi.|
|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...