Bobtail Squid Bioluminescense

1Euprymna scolopes,  commonly known as  Bobtail squid, are indigenous to the Hawaiian islands. This species is found in warm shallow areas and makes them unqiue in the sepiolida family, because their cousin mainly resides in deeper waters. The unique features that E. scolopes has is a symbiotic relationship with a bacterium called Vibrio fischeri. The V. fischeri bacterium is unique because it has the ability to bioluminesce. Euprymna scolopes at a very young age do not have bioluminescence until they take up these bacteria. When the bacteria are taken up, the bacteria donʻt harm the squid but help the squid by giving them irridescent color. This symbiotic relationship with the bacteria allows E. scolopes to have a unique set of traits that help them mimic different color patterns, communication, and mating. This type of symbiotic relationship helps  E. scolopes flourish and survive from predators. The ability to co-exist with different species may make the world a better place.

-by Wilson Lei



Edward G. Ruby. 1996. Lessons from a cooperative, bacterial-animal association: The Vibrio fischeri-Euprymna scolopes Light organ symbiosis. Vol 50



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