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Description of Dinema litorale

Cell length varies from 45 to 95 microns. Cells are spindle-shaped to ovate, with about 30 striations running longitudinally along extended cells or helically in contracted cells. Cortical grooves may be underlain by long thin inclusions. The wedge-shaped ingestion apparatus is located slightly to the right of the midline of the cell, with two rods clearly visible and extending at least halfway down the cell. Refractile granules cluster around the top of the ingestion apparatus. The flagellar pocket is difficult to see. Nucleus is spherical and slightly located in the posterior part of the cell. The anterior flagellum may be as long as the cell. The posterior flagellum is about 0.5 to 1.5 times cell length and is thick at its base and tapers towards the tip - as in Anisonema. The cells move by smooth gliding interrupted with sudden stops, and may jerk back while becoming more spherical and then continue gliding. Often with many refractile granules. Consumes diatoms up to 56 microns long.

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