VetBact
VetBact logo

VetBact

Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Mycobacterium marinum
Category: Zoonotic
Etymology: Genus name: small fungus-like rod.
Species epithet: from the sea.
Significance:  [Of minor importance]   
Taxonomy:
Phylum
Actinobacteria
Class
Actinobacteria
Order
Corynebacteriales
Family
Mycobacteriaceae 
Genus
Mycobacterium
Type Strain: ATCC 927 = CCUG 20998 and 27843 = NCTC 2275.
Macromorphology (smell):
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)
Metabolism: Aerobic-
Catalase/Oxidase:
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.
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_010612 ATCC BAA-535 6 636 827 1c + 1c 

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AF456240 (T) 1522 

Taxonomy/phylogeny:
 
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
Updated:2020-10-28

Recently Updated

Recent blog posts


Swedish University of Agricultural Sciences