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Chilomastix (kai-low-ma-sticks), a genus of retortamonad flagellates, mostly reported in association with animals, but we find this species (C. cuspidata) in anoxic sites. There are four flagella, we can only see three in this picture, inserting just subapically, and at the head of a large groove. One wall of the groove has a cusp. Posterior end drawn out as a long spike. Phase Contrast.
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Chilomastix (kai-low-ma-sticks) cuspidata (Larsen and Patterson, 1990) Bernard et al., 1997. Cells are drop-shaped with a long posterior spike and about 20 - 32 microns long (including the spike) with a groove extending from the apex to the posterior end of the untapered part of the cell. The cells have 4 flagella inserting subapically and are directed anterior laterally, one is shorter than the cell and the other three are about the cell length. The short flagellum beats and lies within the ventral groove. The nucleus is situated subapically. Food vacuoles occur throughout the cell. The cells move slowly by swimming while rotating and may attach to the substrate by the tip of the spike.
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Chilomastix cuspidata (Larsen and Patterson, 1990) Bernard et al., 1997. Cells are drop-shaped with a long posterior spike, they are about 20 - 32 microns long (including the spike) with a groove extending from the apex to the posterior end of the untapered part of the cell. The cells have 4 flagella inserting subapically and are directed anterior laterally, one is shorter than the cell and the other three are about the cell length. The short flagellum beats and lies within the ventral groove. The nucleus is situated subapically. Food vacuoles occur throughout the cell. The cells move slowly by swimming while rotating and may attach to the substrate by the tip of the spike.
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Chilomastix (kai-low-ma-sticks), a genus of retortamonad flagellates, mostly reported in association with animals, but we find this species (C. cuspidata) in anoxic sites. There are four flagella, we can only see three in this picture, inserting just subapically, and at the head of a large groove. One wall of the groove has a cusp. Posterior end drawn out as a long spike. ATCC 50927 was isolated from a salt marsh.
