cytostome
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cytostome
[′sīd·ə‚stōm] (invertebrate zoology)
The mouth-like opening in many unicellular organisms, particularly Ciliophora.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive
Flagellum A filament that usually projects from the body of an organism; functions as an organelle of locomotion or when in the groove in the
cytostome causes movement of fluid; flagella is plural.
Predatory morphs typically have enlarged cell sizes and a larger
cytostome (the cellular equivalent of a mouth).
Contributing to this is a transformation in trophic modes with the reduction (in Spironucleus species) and loss (in species of Octomitus and Giardia) of a
cytostome, necessary for the ingestion of bacterial prey.
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