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Image #   29641D
Name:   Heterotrophic dinoflagellate Protoperidinum sp.
Copyright:   Copyright 2010 Dennis Kunkel Microscopy, Inc.
Description:   Caption: Heterotrophic dinoflagellate Protoperidinum sp. Protoperidinum species are thecate (armored), marine planktonic, heterotrophic (nonphotosynthetic) dinoflagellate. Shown here is the antapical view of a Protoperidinium species (likely Protoperidinum excentricum. The armored 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 dinoflagellate that engulfs (ingests) its prey with a pseudopod (pallium). Prey cells are captured individually using a thin filament and are then surrounded by a membrane (the pallium) and digested completely outside the theca. There are over 40 species of Protoperidinium that are distributed worldwide in both cold and temperate seawater. Dinoflagellates have two flagella (not visible) that arise from two groves (sulcus and cingulum) organized in the thecal plates. One flagellum beats back and forth, while the other is flat and ribbon-like (called an undulating flagellum), and works as a rudder to steer and rotate the organism.
Magnification*: x345
Type: SEM
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   29641D algae alga dinoflagellate dinoflagellates marine plankton plankton Protoperidinium SEM 03.01.10 diplopsaloid diplopsaloid dinoflagellate diplopsaloid dinoflagellates protoperidinioid protoperidinioid dinoflagellate protoperidinioid dinoflagellates heterotroph armored armored dinoflagellate armored dinoflagellates thecate dinoflagellate thecate dinoflagellates peridinioid peridinioid dinoflagellate peridinioid dinoflagellates ciliate ciliates loricated ciliate loricated ciliates non-loricated ciliate non-loricated ciliates flagella flagellum girdle girdle flagella girdle flagellum sulcal flagella sulcal flagellum sulcal groove sulcus undulating undulating flagella undulating flagellum undulation groove thecate heterotrophic dinoflagellate thecate heterotrophic dinoflagellates diplopsaloid shape diplopsaloid shaped dinophysoid dinophysoid dinoflagellate dinophysoid dinoflagellates marine planktonic planktonic dinoflagellate planktonic dinoflagellates protist protista protists sea water seawater Dinophyta Protozoa Protozoan Protozoans Dinophyceae Amphisoleniaceae Alveolata Alveolate Alveolates cingulum dinokont dinokont dinoflagellate dinokont dinoflagellates heterotrophic heterotrophic alga heterotrophic algae heterotrophic dinoflagellate heterotrophic dinoflagellates epitheca epithecum feeding tube hypotheca hypothecum pallium dinoflagellate feeding dinoflagellates feeding eukaryote eukaryotic Protoperidinium excentricum thecal thecal plate thecal plates thecate pallium feeding marine microzooplankton marine zooplankton microzooplankton zooplankton chemoreception pallium feeder pallium feeders pallium feeding heterotrophic dinoflagellate pallium feeding heterotrophic dinoflagellates pseudopod pseudopods mixotroph mixotrophic mixotrophic dinoflagellate mixotrophic dinoflagellates phagotrophy phagotrophic

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