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Stentor protozoan feeding on green algae

K005/7065

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Credit

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

Caption

Stentor protozoan feeding on green algae. Light microscopy footage of the ciliate protozoan Stentor feeding on green algae. Stentor are filter-feeding freshwater protozoa which can reach lengths of up to 2 millimetres. They are among the largest known unicellular organisms. A ring of prominent cilia surrounds the anterior part of the cell to sweep in food and aid in swimming. Some species live symbiotically with certain species of green algae. After being ingested, the algae live on and continue to photosynthesize, while their host absorbs nutrients they produce. The algae receive protection and feed on the protozoan's metabolic wastes. Filmed with darkfield illumination.

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Clip Properties:

  • Duration: 00:00:35
  • Audio: No
  • Interlaced: No
  • Capture Format: Canon EOS 5D Mark II
  • Codec: Apple ProRes 422

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