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Biol Bull 144: 383-390. (April 1973)
© 1973 Marine Biological Laboratory
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LOCALIZATION OF LIMULUS POLYPHEMUS OXYGEN SENSITIVITY

CHARLES H. PAGE 1

1 Department of Zoology, Ohio University, Athens, Ohio 45701 and the Marine Biological Laboratory, Woods Hole, Massachusetts 02543

1. The rate of Limulus opisthosomal gill appendage respiratory movements is proportional to the logarithm of the environmental oxygen concentration. Respiratory movements cease in anaerobic sea water.

2. Oxygen introduction into anaerobic sea water elicits movement of the prosomal walking legs as well as the rhythmic gill appendage movements described by Waterman and Travis (1953).

3. The prosoma and opisthosoma each contain oxygen receptive structures. Prosomal oxygen responsiveness depends upon the sensory cuticular membranes located between the walking leg coxa. Opisthosomal oxygen sensitivity depends upon book gill integrity.

4. Sensory input from either the prosomal intercoxal cuticle and/or the opisthosomal book gills is required to generate rhythmic gill appendage movements in response to oxygen introduction into anaerobic sea water.






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Copyright © 1973 by the Marine Biological Laboratory.