Veterinary bacteriology: information about important bacteria
|Species/Subspecies:||Aeromonas hydrophila subsp. hydrophila|
|Categories:||Causes hemolysis; motile|
|Etymology:||Genus name: gas producing|
Species epithet: water loving
|Type Strain:||ATCC 7966 = CCUG 14551 = NCTC 8049|
||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-|
|Other Enzymes:||DNase +, Esculinase +, ornithine decarboxylase -, tryptophanase +|
|Biochemical Tests:||Citrate v, Voges-Proskauer +|
|Fermentation of carbohydrates:||
D-glucose is fermented under gas production.
|Spec. Char.:||Grows at 37°C|
|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|
|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 Three subspecies of A. hydrophila have been reported.|
|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...