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Bioluminescence in the Deep-Sea Cirrate Octopod Stauroteuthis syrtensis Verrill (Mollusca: Cephalopoda)
Sönke Johnsen, Elizabeth J. Balser, Erin C. Fisher and Edith A. Widder
Vol. 197, No. 1 (Aug., 1999), pp. 26-39
Published by: The University of Chicago Press
Stable URL: http://www.jstor.org/stable/1542994
Page Count: 14
You can always find the topics here!Topics: Arm, Bioluminescence, Epithelium, Connective tissues, Epithelial cells, Animals, Animal cuticle, Cephalopods, Animal organs, Neurons
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The emission of blue-green bioluminescence (λ max = 470 nm) was observed from sucker-like structures arranged along the length of the arms of the cirrate octopod Stauroteuthis syrensis. Individual photophores either glowed dimly and continuously or flashed on and off more brightly with a period of 1-2 seconds. Examination of the anatomy and ultrastructure of the photophores confirmed that they are modified suckers. During handling, the photophores were unable to attach to surfaces, suggesting that, unlike typical octopod suckers, they have no adhesive function. The oral position of the photophores and the wavelength of peak emission, coupled with the animals' primary postures, suggests that bioluminescence in S. syrtensis may function as a light lure to attract prey.
Biological Bulletin © 1999 Marine Biological Laboratory