Protoperidinium dinoflagellate, SEM

Protoperidinium dinoflagellate, SEM

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Credit: DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY

Caption: Scanning electron micrograph (SEM) of a lateral girdle view (diplopsaloid) of a Protoperidinium sp. dinoflagellate. Protoperidinum species are thecate (armoured) marine planktonic heterotrophic (non-photosynthetic) dinoflagellates. The armoured theca (surrounding the cell; made of cellulose) is well developed. Unlike photosynthetic dinoflagellates (true algae), heterotrophic dinoflagellates (protists; protozoa) feed directly on diatoms, other dinoflagellates, prasinophytes and ciliates. Protoperidinium is a pallium feeder that engulfs its prey with a pseudopod (pallium). Prey cells are captured individually using a thin filament and are then surrounded by a membrane and digested completely outside the theca. Specimen from an algal bloom in the Persian Gulf off Kuwait. Magnification: x2,500 when shortest axis printed at 25 millimetres.

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Keywords: 29637, alga, algae, black and white, diatom, diatoms, dinoflagellate, dinoflagellates, diplopsaloid, kuwait, marine dinoflagellate, marine dinoflagellates, marine plankton, monochrome, peridiniales, persian gulf, phytoplankton, plankton, prorocentrum, protoperidiniaceae, protoperidinium, salt water dinoflagellate, salt water dinoflagellates, saltwater dinoflagellate, saltwater dinoflagellates, scanning electron micrograph, scanning electron microscope, scott marine plankton, sea water dinoflagellate, sea water dinoflagellates, seawater dinoflagellate, seawater dinoflagellates, sem

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