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Journal of Experimental Biology 14,431-439 (1937)
Published by Company of Biologists 1937

Quantitative Studies on the Ciliate Glaucoma : II. The Effects of Starvation

J. P. HARDING PH.D.¹

¹ Zoological Laboratory, Cambridge

1. Glaucoma may be starved for at least a month without any deaths occurring.

2. Starved Glaucoma stop multiplying in from 6 to 12 hours according to the extent of feeding before starvation.

3. The food vacuoles are all eliminated by about 5 hours of starvation.

4. The starving individuals become smaller and smaller, the decrease in size being most rapid at first while the ciliates are still multiplying.

5. The nucleus becomes smaller in the same way as the volume of the ciliate, but to a relatively less extent.

6. During the early stages of starvation the Glaucoma become long and slender, and later they tend to return to their normal more spherical shape.

7. The changes in shape induced by starvation are interpreted in terms of the relative changes in the surface and volume of the ciliates.