Bioluminescence and fluorescence of three sea pens in the north-west Mediterranean sea

Author:

Francis Warren RORCID,de Vilar Anaïs SireORCID

Abstract

AbstractBioluminescence of Mediterranean sea pens has been known for a long time, but basic parameters such as the emission spectra are unknown. Here we examined bioluminescence in three species of Pennatulacea, Pennatula rubra, Pteroeides griseum, and Veretillum cynomorium. Following dark adaptation, all three species could easily be stimulated to produce green light. All species were also fluorescent, with bioluminescence being produced at the same sites as the fluorescence. The shape of the fluorescence spectra indicates the presence of a GFP closely associated with light production, as seen in Renilla. Our videos show that light proceeds as waves along the colony from the point of stimulation for all three species, as observed in many other octocorals. Features of their bioluminescence are strongly suggestive of a “burglar alarm” function.

Publisher

Cold Spring Harbor Laboratory

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