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Vibrio harveyi (Gram-Negative, Bioluminescent, Marine Bacteria Species)


Vibrio harveyi General Facts:
  • 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.

Image: Vibrio harvei luminescence in culture plate via Biomedical Beat
Tags: Barramundi - Bioluminescence - Common Snook - Flagella - Gorgonian Coral - Halophilic - Lobster - Luminescence - Luminous Vibriosis - Marine Mucilage - Marine Snow - Milkfish - Oyster - Prawn - Quorum Sensing - Seahorse - Turbot - Vibrio - Vibrio harveyi
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