The Journal of General Physiology
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The Journal of General Physiology, Vol 15, 183-190, Copyright © 1931 by The Rockefeller University Press

ARTICLE

ON THE RATE OF OXYGEN CONSUMPTION BY FERTILIZED AND UNFERTILIZED EGGS

II. CUMINGIA TELLINOIDES



D. M. Whitaker 1

1 From the Laboratory of General Physiology, Harvard University, Cambridge, and the Marine Biological Laboratory, Woods Hole

The rate of oxygen consumption by the eggs of the clam Cumingia decreases following fertilization, resembling in this respect a similar phenomenon of the eggs of the annelid Chaetopterus. The unfertilized Cumingia eggs consume approximately 3.1 mm.3 O2 per hour per 10 mm.3 eggs. The average consumption of fertilized eggs over the period 10–60 minutes after fertilization is 1.4 mm.3 O2 per hour per 10 mm.3 eggs or about 45 per cent of the prefertilization rate.

Accepted on September 9, 1931


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