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Biol Bull 69: 356-360. (December 1935)
© 1935 Marine Biological Laboratory
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DIFFERENTIAL OXYGEN UPTAKE OF REGIONS OF LIMULUS OPTIC NERVE AS RELATED TO DISTANCE FROM THE SENSE ORGAN

RITA GUTTMAN 1

1 From the Marine Biological Laboratory, Woods Hole, Mass., and the Zoölogical Laboratory, Columbia University

The differential rate of oxygen uptake of the optic nerve of Limulus polyphemus was investigated by means of a differential volumeter. Thirteen experiments are reported. It was found that:

1. In every case the respiration of the distal end was lower than that of the proximal region. The respiration of the distal end was lower than that of any other region of the nerve in all the cases studied but one.

2. A maximal rate was found in ten out of twelve cases along the central portion of the nerve. Thus no gradient in the accepted sense of the word of oxygen uptake exists in the nerve.

3. The average difference between maximal and minimal rates in a nerve was 36 per cent.






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Copyright © 1935 by the Marine Biological Laboratory.