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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Aeromonas salmonicida subsp. achromogenes
Etymology: Genus name: gas producing
Species epithet: salmon killer
Subspecies epithet: not color producing
Significance:  [Of minor importance]   
Taxonomy:
Phylum
Proteobacteria
Class
Gammaproteobacteria
Order
Aeromonadales
Family
Aeromonadaceae 
Genus
Aeromonas
Type Strain: ATCC 33659
Macromorphology (smell): Grey-white translucent colonies (diameter 1-3 mm) with a buttery consistency and without hemolysis, usually no pigmentation (compare with subsp. salmonicida)
Micromorphology: Nonmotile rods with rounded ends, sometimes coccoid, sometimes in pairs or short chains
Gram +/Gram -:G-
Metabolism: Facultatively anaerobic
Catalase/Oxidase:+/+
Other Enzymes: Esculinase -, tryptophanase +
Biochemical Tests: Voges-Proskauer -
Fermentation of carbohydrates:
D-glucose
+
lactose
?
maltose
+
L-rhamnose
?
sucrose
+
L-arabinose
-
cellobiose
?
D-mannitol
-
salicin
-
trehalose
?
glycerol
?
inulin
?
raffinose
?
D-sorbitol
?
starch
?
Gas is not produced under fermentation of D-glucose.
Spec. Char.: No growth at 37°C
Disease:Atypical furunculosis
Hosts: Fish
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
Not reported    

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AY910844 Not defined 1540  

Taxonomy/phylogeny:
 
About 30 species have been described within the genus Aeromonas and they form a cluster, which is related to Pseudomonas spp. and Moraxella spp. and some other genera Five subspecies of A. salmonicida have been reported.
Updated:2018-09-13

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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 VetBact

Published 2023-03-15. Read more...

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