Gallery of Protist Images

We are currently developing this part of the site and it will be expanded as more images are acquired. If you have any protist images that you are willing to share with the society, please Contact the BSPB.

Pictures and text by permission of Finlay, B.J. & Esteban, G.F. Protist, 149, 155-165.

Selection of protists

a-k. Representatives of the ciliate community in Priest Pot, focusing on some zoochlorellae-bearing forms on 9 August 1995, and on Peridinium-ingesting forms on 5 June 1997.

  1. the dinoflagellate Peridinium sp.
  2. many Peridinium ingested by the ciliate Frontonia leucas.
  3. many Peridinium ingested by the ciliate Frontonia vernalis. Note that this ciliate also has zoochlorellae.
  4. the ciliate Bursaridium pseudobursaria, feeding on Peridinium.
  5. the ciliate Lembadion magnum, having trapped an individual Peridinium.
  6. the ciliate Euplotes daidaleos, packed with zoochlorellae, with no evidence of other ingested food.
  7. the ciliate Histiobalantium viridis with ingested whole cells of Phacus sp. and (sequestered) chioroplasts (e.g. circular greenish structure close to the centre of the picture). Impregnated with Ag-carbonate.
  8. cells of the euglenid Phacus sp. from water at the depth of peak abundance of Histiobalantium viridis.
  9. the ciliate Prorodon viridis, impregnated with Ag-carbonate. This specimen has been compressed slightly, forcing some cytoplasm and zoochlorellae out through the oral aperture.
  10. a cyst (probably of the zoochlorellae-bearing ciliate Euplotes daidaleos) retrieved from the sediment of Priest Pot.
  11. conjugation involving two cells of the zoochlorellae-bearing ciliate Coleps viridis. Ag-carbonate impregnated.

Various magnifications: individual cells of Peridinium, Phacus and zoochlorellae are approximately 25, 28, and 4 Nm respectively.

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