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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Clostridium haemolyticum
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
Taxonomy:
Phylum
Firmicutes
Class
Clostridia
Order
Clostridiales
Family
Clostridiaceae 
Genus
Clostridium
Type Strain: ATCC 9650 = NCTC 13022
Macromorphology (smell):
   
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.
Metabolism: Anaerobic
Catalase/Oxidase:-/
Other Enzymes: Esculinase -, lecithinase +, tryptophanase +
Fermentation of carbohydrates:
D-glucoselactosemaltoseL-rhamnosesucrose
?-(-)(-)-
L-arabinosecellobioseD-mannitolsalicintrehalose
----(-)
glycerolinulinraffinoseD-sorbitolstarch
?-(-)--
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.:
Acc-noStrainNumber of NTOperon
AB037910 ATCC 9650T 1 465  

Taxonomy/phylogeny:
 
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.
Updated:2020-01-23

News

The revised taxonomy of the mollicutes

The revised taxonomy of mollicutes (mycoplasmas) has now been introduced on VetBact, which means that many of the species have been given new genus names or moved to another higher taxon. 

Published 2021-11-25. Read more...

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