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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 3760

Jacob J. Blum and Henry Greenside; Particle Ejection from the Cytoproct of Tetrahymena. J.Protozool. 23(4):500-502, 1976

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Egestion of carmine particle-containing food vacuoles from the cytoproct of Tetrahymena pyriformis has been analyzed by high-speed cinemicrography. The vacuole may enter into position in the cytoproct ~7 sec before ejection, and forms a distinct bulge beyond the outline of the cell surface for over 2 sec prior to ejection. The ejection process itself requires 20-80 msec.