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Biol Bull 113: 120-128. (August 1957)
© 1957 Marine Biological Laboratory
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THE LUMINESCENCE OF THE MILLIPEDE, LUMINODESMUS SEQUOIAE

J. WOODLAND HASTINGS 1 and DEMOREST DAVENPORT 1

1 Department of Biological Sciences, Northwestern University, Evanston, Illinois and Department of Biological Sciences, University of California, Santa Barbara College, Goleta, California

1. The luminescence of Luminodesmus is continuous, but fluctuates by 20 to 40 per cent or more. The mechanism by which light emission is controlled is not known. No evidence was found for the suggestion that the light is bacterial in origin.

2. The luminescence is green with a maximum emission at 495 mµ and is optimal at a temperature of 31.5° C. Light emission is greatest in pure oxygen and extinguished in pure nitrogen. An oxygen concentration of 6.5% decreased the intensity from that in air by about one half.

3. Luminescence in water extracts of dried acetone powders has been demonstrated.

4. We have not been able to restore luminescence to dark extracts either by the classical luciferin-luciferase technique or by adding a variety of biochemical intermediates. We have found that if adenosine triphosphate is added to extracts while they are luminescing an increase in light intensity occurs.






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Copyright © 1957 by the Marine Biological Laboratory.