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Vibrio harveyi

 

 
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Vibrio harveyi
 
 
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Vibrio harveyi is a species of Gram-negative
Gram-negative

Gram-negative bacteria are those bacteria that do not retain crystal violet dye in the Gram staining protocol. In a Gram stain test, a counterstain is added after the crystal violet, coloring all Gram-negative bacteria with a red or pink color....
, bioluminescent
Bioluminescence

Bioluminescence is the production and emission of light by a living organism as the result of a chemical reaction during which chemical energy is converted to light energy....
, marine bacteria
Bacteria

The Bacteria are a large group of unicellular microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals....
 in the genus
Genus

A genus is a low-level taxonomic rank used in the classification of living and fossil organisms. The taxonomic ranks are domain , kingdom , phylum, class , order , family , genus, and species....
 Vibrio
Vibrio

Vibrio is a genus of Gram-negative bacteria possessing a curved rod shape. Typically found in Seawater, Vibrio are Facultative anaerobic organism that test positive for oxidase and do not form spores....
. Ecologically
Ecology

Ecology is the science study of the distribution and Abundance of life and the interactions between organisms and their nature environment ....
 similar to Vibrio fischeri
Vibrio fischeri

Vibrio fischeri is a gram-negative rod-shaped bacterium found globally in the ocean environments. V. fischeri has bioluminescence properties, and is found predominantly in symbiosis with various marine animals, such as the bobtail squid....
, V. harveryi has both a free-living form, as well a symbiotic
Symbiosis

The term symbiosis commonly describes close and often long-term interactions between different biological species. The term was first used in 1879 by the Germany mycology Heinrich Anton de Bary, who defined it as "the living together of unlike organisms"....
 relationship with other marine
Marine (ocean)

Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology....
 organisms. V. harveyi may be a more common cause of luminous vibriosis in commercially farmed
Aquaculture

Aquaculture is the farming of freshwater and saltwater organisms including molluscs, crustaceans and aquatic plants. Unlike fishing, aquaculture, also known as aquafarming, implies the cultivation of aquatic populations under controlled conditions....
 marine invertebrate
Invertebrate

An invertebrate is an animal lacking a vertebral column. The group includes 98% of all animal species ? all animals except those in the Chordate subphylum vertebrate ....
s such as in penaeid shrimps (prawns).

Quorum sensing
Groups of V. harveryi bacteria communicate via quorum sensing
Quorum sensing

Quorum sensing is a type of decision-making process used by decentralized groups to coordinate behavior. Many species of bacteria use quorum sensing to coordinate their gene expression according to the local density of their population....
 to coordinate the production of light via bioluminescense.






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Vibrio harveyi is a species of Gram-negative
Gram-negative

Gram-negative bacteria are those bacteria that do not retain crystal violet dye in the Gram staining protocol. In a Gram stain test, a counterstain is added after the crystal violet, coloring all Gram-negative bacteria with a red or pink color....
, bioluminescent
Bioluminescence

Bioluminescence is the production and emission of light by a living organism as the result of a chemical reaction during which chemical energy is converted to light energy....
, marine bacteria
Bacteria

The Bacteria are a large group of unicellular microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals....
 in the genus
Genus

A genus is a low-level taxonomic rank used in the classification of living and fossil organisms. The taxonomic ranks are domain , kingdom , phylum, class , order , family , genus, and species....
 Vibrio
Vibrio

Vibrio is a genus of Gram-negative bacteria possessing a curved rod shape. Typically found in Seawater, Vibrio are Facultative anaerobic organism that test positive for oxidase and do not form spores....
. Ecologically
Ecology

Ecology is the science study of the distribution and Abundance of life and the interactions between organisms and their nature environment ....
 similar to Vibrio fischeri
Vibrio fischeri

Vibrio fischeri is a gram-negative rod-shaped bacterium found globally in the ocean environments. V. fischeri has bioluminescence properties, and is found predominantly in symbiosis with various marine animals, such as the bobtail squid....
, V. harveryi has both a free-living form, as well a symbiotic
Symbiosis

The term symbiosis commonly describes close and often long-term interactions between different biological species. The term was first used in 1879 by the Germany mycology Heinrich Anton de Bary, who defined it as "the living together of unlike organisms"....
 relationship with other marine
Marine (ocean)

Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology....
 organisms. V. harveyi may be a more common cause of luminous vibriosis in commercially farmed
Aquaculture

Aquaculture is the farming of freshwater and saltwater organisms including molluscs, crustaceans and aquatic plants. Unlike fishing, aquaculture, also known as aquafarming, implies the cultivation of aquatic populations under controlled conditions....
 marine invertebrate
Invertebrate

An invertebrate is an animal lacking a vertebral column. The group includes 98% of all animal species ? all animals except those in the Chordate subphylum vertebrate ....
s such as in penaeid shrimps (prawns).

Quorum sensing


Groups of V. harveryi bacteria communicate via quorum sensing
Quorum sensing

Quorum sensing is a type of decision-making process used by decentralized groups to coordinate behavior. Many species of bacteria use quorum sensing to coordinate their gene expression according to the local density of their population....
 to coordinate the production of light via bioluminescense. While similar to V. fisheri in many ways, the quorum sensing
Quorum sensing

Quorum sensing is a type of decision-making process used by decentralized groups to coordinate behavior. Many species of bacteria use quorum sensing to coordinate their gene expression according to the local density of their population....
-based signalling system in V. harveyi appears to be significantly more diverse and complex.

Based on samples taken by ocean-going ships, V. harveyi is thought to be the cause of the milky seas effect
Milky seas effect

Milky seas is a condition on the open ocean where large areas of seawater are filled with bioluminescent bacteria, causing the ocean to uniformly glow an eerie blue at night....
, in which, during the night, a uniform white glow is emitted from the seawater
Seawater

Seawater is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5%, or 35 parts per thousand . This means that every 1 kg of seawater has approximately 35 grams of sea salt ....
. Some glows can cover nearly 6,000 square miles.

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