|Etymology:||Genus name: named after the American bacteriologist P. R. Edwards (1901-1966).|
Species epithet: refers to catfish (genus Ictalurus).
|Significance:||Har betydelse i de länder där man odlar dvärgmal, t.ex. USA, Australien och Thailand. Sjukdomen har aldrig påvisats i Sverige.
[Of minor importance]
|Type Strain:||SECFDL (Southeastern Cooperative Fish Disease) Laboratory) GA 77-52 = ATCC 33202 = CCUG 18764 = NCTC 12122.|
|Micromorphology:||Nonmotile short rods (0.8 x 1-3 µm).|
|Gram +/Gram -:||G-|
|Other Enzymes:||DNase -, esculinase -, ornithine decarboxylase v, tryptophanase - (cf. E. tarda), urease -.|
|Biochemical Tests:||Citrate -, hydrogen sulfide v, methyl red -, Voges-Proskauer -|
|Fermentation of carbohydrates:||
|Spec. Char.:||Does not grow at 42°C (cf. E. tarda).|
|Disease:||"Hole in the head disease".
|Hosts:||Fish of the genus dwarf catfish, especially channel catfish (Ictalurus punctatus).|
|Clinical Picture:||Spot formed bleeding in the oral cavity, throat, abdomen and at the bases of the fins.|
|16S rRNA Seq.:|
||Four species have been described within the genus Edwardsiella. These bacteria belong to the familyEnterobacteriaceae and they are relatively closely related to bacteria within the genera Morganella and Proteus.|
|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...