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Bioluminescent signals spatially amplified by wavelength-specific diffusion through the shell of a marine snail
Deheyn, D.D.; Wilson, N.G. (2011). Bioluminescent signals spatially amplified by wavelength-specific diffusion through the shell of a marine snail. Proc. - Royal Soc., Biol. Sci. 278(1715): 2112-2121. dx.doi.org/10.1098/rspb.2010.2203
In: Proceedings of the Royal Society of London. Series B. The Royal Society: London. ISSN 0962-8452, more
Peer reviewed article  

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Keyword
    Marine
Author keywords
    bioluminescence; signal dispersion; biophotonics; light manipulation; shell adaptation; wavelength-specific diffusion

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Abstract
    Some living organisms produce visible light (bioluminescence) for intra- or interspecific visual communication. Here, we describe a remarkable bioluminescent adaptation in the marine snail Hinea brasiliana. This species produces a luminous display in response to mechanical stimulation caused by encounters with other motile organisms. The light is produced from discrete areas on the snail's body beneath the snail's shell, and must thus overcome this structural barrier to be viewed by an external receiver. The diffusion and transmission efficiency of the shell is greater than a commercial diffuser reference material. Most strikingly, the shell, although opaque and pigmented, selectively diffuses the blue-green wavelength of the species bioluminescence. This diffusion generates a luminous display that is enlarged relative to the original light source. This unusual shell thus allows spatially amplified outward transmission of light communication signals from the snail, while allowing the animal to remain safely inside its hard protective shell.

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