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Image #   2101022A
Name:   Vibrio fischeri - bioluminescent, symbiotic bacterium
Copyright:   Copyright 2010 Dennis Kunkel Microscopy, Inc.
Description:   Caption: Vibrio fischeri - Gram-negative, motile, bioluminescent, curved rod-shaped bacterium (prokaryote). Vibrio fischeri is a bioluminescent bacterium that occurs in global ocean environments. It moves by means of flagella. Free living V. fischeri survive on decaying organic matter. V. fischeri is found in higher concentrations in symbiotic relationships with certain deep sea marine life within special light-organs. One such symbiotic relationship is with the bobtail squid. V. fischeri causes the squid to produce a mucus substance that is secreted below the light organ on the squid. Cilia are used to draw more bacteria into this mucus matrix. The bacteria migrate into the light organ and colonize an area within it. They provide a light source for the squid to make it blend in with the ocean floor at night. Thus predators have a hard time seeing the squid. V. fischeri is a key research organism for examination of microbial bioluminescence, quorum sensing, and bacterial-animal symbiosis.
Magnification*: x8,000
Type: SEM
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   2101022A 10.01.10 Vibrio Vibrio fischeri bacteria bacterium vibrio-shaped vibroid salt-requiring gram negative marine saltwater Gram-negative halophile microbes prokaryote salt tolerant salt-tolerant vibrio shaped rod rod shaped rod-shaped salt water curved-rod curved rod SEM bacteria symbiosis bacterial symbiosis bacterium symbiosis halophiles symbiotic bioluminescent bacteria bioluminescent bacterium bioluminescent saprophyte saprophytic saprophytic bacteria saprophytic bacterium saprotroph saprotrophic luciferase luciferin luciferin luciferase system luciferin-luciferase system bacteria bioluminescence bacterial bioluminescence bacterium bioluminescence bioluminescence microbe bioluminescence microbial bioluminescence bacteria quorum sensing bacterial quorum sensing bacterium quorum sensing quorum sensing animal bacteria symbiosis animal-bacteria symbiosis bacterial animal symbiosis bacterial-animal symbiosis proteobacteria proteobacterium gammaproteobacteria gamma proteobacteria gamma proteobacterium gamma-proteobacteria gamma-proteobacterium gammaproteobacterium Vibrionales Vibrionaceae lux operon bob tail squid bobtail squid Euprymna scolopes light organ squid light organ marine bacteria marine bacterium salt water bacteria salt water bacterium saltwater bacteria saltwater bacterium sea water bacteria sea water bacterium seawater bacteria seawater bacterium marine light organ sepiolid squid monocentrid fish monocentrid fishes circadian rhythm circadian rhythms marine organism marine organisms

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