VetBact
VetBact logo

VetBact

Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Aeromonas hydrophila subsp. hydrophila
Categories: Causes hemolysis; motile
Etymology: Genus name: gas producing
Species epithet: water loving
Significance:  [Important]   
Taxonomy:
Phylum
Proteobacteria
Class
Gammaproteobacteria
Order
Aeromonadales
Family
Aeromonadaceae 
Genus
Aeromonas
Type Strain: ATCC 7966 = CCUG 14551 = NCTC 8049
Macromorphology (smell):
   
Grey-white translucent colonies (diameter 1-3 mm) with a buttery consistency and hemolysis
Micromorphology: Motile rods with rounded ends and, sometimes coccoid, sometimes in pairs or short chains, monotrichous flagella
Gram +/Gram -:
 
G-
Metabolism: Fakultatively anaerobic
Catalase/Oxidase:+/+
Other Enzymes: DNase +, Esculinase +, ornithine decarboxylase -, tryptophanase +
Biochemical Tests: Citrate v, Voges-Proskauer +
Fermentation of carbohydrates:
D-glucoselactosemaltoseL-rhamnosesucrose
+v+v+
L-arabinosecellobioseD-mannitolsalicintrehalose
v-+v+
glycerolinulinraffinoseD-sorbitolstarch
+?--?
D-glucose is fermented under gas production.
Spec. Char.: Grows at 37°C
Special Media:
Aeromonas hydrophila  
Disease:Hemorrhagic septicemia, food poisoning (humans)
Hosts: Carp, cold-blooded animals, doplhins, humans
Clinical Picture: Diarrhea (humans)
Virulence Factors: Has enterotoxic, cytotoxic and cytotonic toxins
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_008570 ATCC 7966 4 744 448  

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
X87271 (T) 1538 10 

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 Three subspecies of A. hydrophila have been reported.
Reference(s): No. 46
Updated:2021-02-28

News

New names of taxa within the classification category phylum

During October 2021, an article was published by A. Oren och G.M. Garrity, in which new names are proposed for a number of taxa within the classification category phylum. This has resulted in many discussions in social media about whether it was really necessary to make these changes, which have created confusion among microbiologists and other professionals who come into contact with bacteriology.

Published 2022-09-28. Read more...

Recently Updated

Recent blog posts


Swedish University of Agricultural Sciences