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[Annelida] Irido-Bioluminescent earthworm

Emilia Rota via annelida%40net.bio.net (by rota from unisi.it)
Thu Apr 18 06:56:20 EST 2013


Dear Eric,
I have just watched your video and I think it shows common earthworms 
with a multicolor (blue and green) surface effect due to iridescence 
plus in some segments the yellow of chloragogue tissue showing 
through the body wall.
Iridescence is a purely physical phenomemon commonly seen in 
earthworms, being produced by the fibrous (collagenous) nature of the 
cuticle causing diffraction of light.
Earthworm bioluminescence would not have that appearance in daylight.
Emilia



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