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Species of gram-negative, bioluminescent, marine bacteria.
Organism implicated in the production of marine mucilage or marine snow, based on samples collected by ocean going vessels.
Vibrio harveyi bacteria have been shown to communicate via quorum sensing - enabling them to coordinate the production of virulence factors & also bioluminescense (see culture plate opposite).
Vibrio harveyi Bacteriology:
Genus - Vibrio.
Shape - rod-shaped
Staining -Gram negative.
Motility - Motile - has polar flagella.
Respiration - Facultatively anaerobic
Other - Halophilic.
Growth temperature - between 4°C & 35°C.
Locations - free-swimming in tropical marine waters.
Commensal - gut microflora of marine animals.
Vibrio harveyi Pathogenicity:
Both a primary & opportunistic pathogen of marine animals.
Corals - Gorgonian corals.
Molluscs - Oysters
Marine crustaceans - Prawns, Lobsters,
Fish - Asian Sea Bass, Barramundi, Common Snook, Milkfish, Seahorses, Turbot.
Produces a condition called luminous vibriosis - affecting commercially farmed penaeid prawns.