Vorticella sp. living in in clusters on the root of Duckweed (Lemna sp.) in west Wales, each stalk is individually attached to the root surface.

The stalk is made up of an external sheath that contains a fluid and a spirally arranged contractile fibril called a myoneme that contracts when stimulated. When disturbed, the vorticella contracts and the stalk thread is shortened, causing the sheath to coil tightly like a spring. The swimming microorganism at the end of the clip is a Vorticella daughter cell called a Telotroch. Vorticella are heterotrophic organsims. They prey on bacteria. Vorticella use their cilia to create a current of water (vortex) to direct food towards its mouth.Phase Contrast illumination, each inverted bell-shaped cell is approximately 50-100 microns in length.


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Licence type:Rights-ready
Collection:Oxford Scientific Video
Clip length:00:00:34:00
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Mastered to:QuickTime 10-bit ProRes 422 (HQ) HD 1920x1080 23.98p More information

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