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Biol Bull 143: 247-255. (August 1972)
© 1972 Marine Biological Laboratory
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A COMPARISON OF IN SITU AND IN VITRO RESPONSES OF CRUSTACEAN HEARTS TO HYPOXIA

DANIEL F. STIFFLER 1 and AUSTIN W. PRITCHARD 1

1 Department of Zoology, Oregon State University, Corvallis, Oregon 97331

1. Heart rate and amplitude were recorded for both in situ and isolated hearts of Cancer magister exposed to lowered oxygen concentrations.

2. Both rate and amplitude declined markedly as the oxygen was driven from the water. This occurred in both in situ and isolated hearts.

3. The recovery of in situ hearts to near normal rate and amplitude occurred quite rapidly upon the readmission of oxygen to the water.

4. Isolated hearts recovered very slowly to aeration of hypoxic water.






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Copyright © 1972 by the Marine Biological Laboratory.