|Etymology:||Genus name: small fungus-like rod.|
Species epithet: from the sea.
|Significance:||[Of minor importance]|
|Type Strain:||ATCC 927 = CCUG 20998 and 27843 = NCTC 2275.|
|Micromorphology:||Acid-alcohol-fast long rods. It has been reported that M. marinum can form endospores. This finding is, however, controversial (see references 105 and 106 below) and has not been verified.|
|Gram +/Gram -:||G+ (but difficult to gram stain)|
|Other Enzymes:||Urease +.|
|Spec. Char.:||M. marinum is a slow grower (it takes more than 7 days to see colonies with the naked eye).Generation time: 6-11 h. Photochromogenic. Optimal growth temperature: 33°C.|
|Disease:||Intracellular granulomatous disease in fish. Swimming pool granuloma in humans.
|Hosts:||Fish, frogs and other poikilothermic animals. Can cause skin lesions in humans.|
|16S rRNA Seq.:|
||About 175 species have been described within genus Mycobacterium and this genus is closely related to Rhodococcus, Nocardia and Corynebacterium. M. marinum is very closely related to M. ulcerans.|
|Comment:||M. marinum can produce a yellow photochromogenic pigment in contrast to M. ulcerans.|
|Reference(s):||No. 72, 105, 106|
|"Dear child has many names" (call it what you will...)|
For a long time, Rhodococcus hoagii was referred to Rhodococcus equi on VetBact, because we experienced some resistance to the name that is now considered to be the correct one, i.e. Rhodococcus hoagii. Now you can find the bacterium in question under the correct name in VetBact, but you can also find the bacterium when searching for the old name.Published 2021-10-10. Read more...