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Blepharisma and dinoflagellates

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Credit

FRANK FOX / SCIENCE PHOTO LIBRARY FRANK FOX / SCIENCE PHOTO LIBRARY

Caption

Blepharisma and dinoflagellates. Light microscope footage of ciliate protozoan Blepharisma sp. (centre) amongst dinoflagellates (motile green cells). Blepharisma species are single-celled filter-feeding protozoa that are found in freshwater. They feed on bacteria and decaying organic matter, which they filter through membranelles in their primitive mouth, known as a buccal cavity. When feeding conditions are good they can grow to an enormous size. Dinoflagellates are also unicellular protozoans. About 90 per cent are found in marine environments as plankton but they also occur widely in fresh water. They range in size from 2 millimetres to less than a hundredth of a millimetre across.

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Downloadable Master

  • Duration: 00:00:23.16
  • Audio: No
  • Format: Photo JPEG 100% QuickTime movie

Original

  • Capture Format: Canon EOS 5D Mark II

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