Veterinary bacteriology: information about important bacteria
|Species/Subspecies:||Aeromonas salmonicida subsp. salmonicida|
|Categories:||Causes hemolysis; notifiable diseases and bacteria|
|Etymology:||Genus name: gas producing.|
Species epithet: salmon killer.
Subspecies epithet: see Species epithet.
|Type Strain:||ATCC 33658 = NCTC 12959|
||Grey-white translucent colonies (diameter 1-3 mm) with a buttery consistency without hemolysis, produces a brown water soluble pigment on agar containing tyrosine or phenylalanine. Gives hemolysis on ox blood agar.|
|Micromorphology:||Nonmotile rods with rounded ends, sometimes coccoid, sometimes in pairs or short chains.|
|Gram +/Gram -:||G-|
|Other Enzymes:||Esculinase +, tryptophanase -|
|Biochemical Tests:||Voges-Proskauer -|
|Fermentation of carbohydrates:||
Ferments D-glucose under gas production.
|Spec. Char.:||Temperature optimum: 25°C, no growth at 37°C|
||A. salmonicida subsp. salmonicida is growing well on purple agar, but does not ferment lactose. However, this bacterium produces redbrownish and watersoluble pigmen, which can be seen on the purple agar plate.|
|16S rRNA Seq.:|
||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.|
|Comment:||Furunculosis is a notifiable disease in Sweden|
|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...