ABSTRACT
The rate of output of the contractile vacuole of the suctorian Podophrya sp. was found to increase during feeding up to ten times. It decreased at the end of the meal but remained higher than it was before feeding.
The extra output of the contractile vacuole during feeding was approximately equal to the decrease in volume of the prey minus the increase in volume of the Podophrya.
In a typical meal roughly one-half of the food ingested by Podophrya was accommodated by expansion, and one half by concentration of the food taken in. This concentration was brought about by the action of the contractile vacuole.
Copyright © 1952 The Company of Biologists Ltd.
1952
You do not currently have access to this content.
