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From Wikipedia, the free encyclopedia

The elongate jewel squid (Histioteuthis reversa), so called because the photophores festooning its body make it appear bejewelled
The elongate jewel squid (Histioteuthis reversa), so called because the photophores festooning its body make it appear bejewelled
Diagram of a cephalopod's photophore, in vertical section
Diagram of a cephalopod's photophore, in vertical section

A photophore is a glandular organ that appears as luminous spots on various marine animals, including fish and cephalopods. The organ can be simple, or as complex as the human eye; equipped with lenses, shutters, color filters and reflectors.[1] The bioluminescence can variously be produced from compounds during the digestion of prey, from specialized mitochondrial cells in the organism, called photocytes ("light producing" cells), or, similarly, associated with symbiotic bacteria in the organism that is cultured.

The character of photophores is important in the identification of deep sea fishes. Photophores on fish are used for attracting food or for camouflage from predators by counter-illumination.

Photophores are found on some cephalopods, including firefly squid, the sparkling enope or firefly squid, which can create impressive light displays.[1]

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See also

References

  1. ^ a b "Cephalopod Photophore Terminology". Tolweb.org. Retrieved 2012-08-30. 
This page was last edited on 16 October 2017, at 14:20
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