Edwardsiella tarda
| Edwardsiella | |
|---|---|
| Scientific classification | |
| Kingdom: | Bacteria |
| Phylum: | Proteobacteria |
| Class: | Gamma Proteobacteria |
| Order: | Enterobacteriales |
| Family: | Enterobacteriaceae |
| Genus: |
Edwardsiella R. Sakazaki et al., 1962 |
| Species: | E. tarda |
| Binomial name | |
|
Edwardsiella tarda Ewing et al., 1965 |
|
Edwardsiella tarda is a member of the Enterobacteriaceae family. The bacterium is a facultatively anaerobic, small, motile, gram negative, straight rod with flagella. Infection causes Edwardsiella septicemia (also known as ES, edwardsiellosis, emphysematous putrefactive disease of catfish, fish gangrene, and red disease) in channel fish, eels, and flounder. Edwardsiella tarda is also found in largemouth bass and freshwater species such as rainbow trout. It is a zoonosis and can infect a variety of animals including fish, amphibians, reptiles and mammals. Edwardsiella tarda has also been the cause of periodic infections for various animals within zoos.E. tarda has a worldwide distribution and can be found in pond water, mud, and the intestine of fish and other marine animals. It is spread by carrier animal feces.
The creation of the species was suggested by Ewing and colleagues in 1965 in order to cover 37 different strains that mainly were found in fecal materials. Japanese and other scientists were also observing similar bacterium to these and eventually the bacterium were divided into two groups called the Asakusa and Bartholomew groups. Edwardsiella tarda was established as a legitimate genus and species through studies at the Walter Reed Army Institute of Research by Don Brenner. The Edwardsiella genus was named after P. R. Edwards in 1965.
Edwardsiella tarda is widely distributed throughout the world. It has been found from the water in Japan all the way to the United States. In Japan it was present in the Japanese eel and in some of the Japanese snakes. In the United States it was reported to be found in human feces.
Infection can cause organomegaly, ocular disease, rectal prolapse, ecchymosis, and erosions on the skin, inflammation of the gills, oedema, ascites, abnormal behavior, and haemorrhage throughout the body. On postmortem fish they are normally pale with widespread petechial haemorrhage and abscessation. On catfish, lesions will develop into deep abscesses filled with gas and necrotic substances. It can cause a variety of signs in humans including gastroenteritis, meningitis and peritonitis.
...
Wikipedia