SEMs of ciliate protozoan consume fellow ciliate

SEMs of ciliate protozoan consume fellow ciliate

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Credit: BIOPHOTO ASSOCIATES/SCIENCE PHOTO LIBRARY

Caption: Second in a sequence of 4 false-colour scanning electron micrographs (SEMs) showing the ciliate protozoan Didinium nasutum (right) attacking & consuming fellow ciliate Paramecium sp. The barrel-shaped Didinium has 2 girdles of locomotory cilia, & a prominent snout which is used as a probing & seizing organ during feeding. The snout is reinforced by rod-like structures which hold fast the prey. In this micrograph, the Didinium grips the Paramecium, almost twice its size, near the latter's mouth. The Didinium's snout & gullet expand enormously in preparation for the meal. Magnification: x210 at 35mm size. Gold tint. Ref.: MICROCOSMOS, figure 3.8, page 46.

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Keywords: animal, cilia, ciliate, didinium nasutum, invertebrate, invertebrates, nature, paramecium sp., predator, protozoa, protozoan, trichocyst, wildlife, zoology

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