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Matute, La Rioja, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Galende, Castile and Len, Spain
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Rhogostoma (row-gaw-stow-ma) is a rarely reported amoeba with a flexible surrounding test and with a small opening through which pseudopodia can emerge. Cluster of cells with common cytoplasm, at the centre of the cluster. With one cyst. Phase contrast.
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Kiitoksia (kee-tox-ee-a) is a very small gliding flagellate with a rounded cell body and a single long flagellum which trails behind the gliding cell. From marine habitats. Two species - Kiitoksia ystava and K. kaloista (which in Finnish means, - Thank you my old friend, and - Thank you for the fish. Phase contrast.
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Small cercomonad, the bullseye is the nucleus, one sweeping flagellum is directed anteriorly (to the right) and one flagellum trails below and behind the cell.
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Barrio Ballinas, Castille and Leon, Spain
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Canencia, Madrid, Spain
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Rhogostoma (row-gaw-stow-ma) is a rarely reported amoeba with a flexible surrounding test and with a small opening through which pseudopodia can emerge. Cluster of cells with common cytoplasm, at the centre of the cluster. Phase contrast.
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Kiitoksia ystava V+rs, 1992. Cell circular or slightly reniform, 2-3 microns A single flagellum, about twice cell length, inserts into a small dent to one side of the posterior surface. A fine hair-like portion is sometimes seen at the distal end of the flagellum. Cells glide rapidly and jerkily, with the cell nodding up and down from the surface. Seen occasionally in cultures, associated with detrital flocs.
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Cercomonas: A flagellate with highly flexible body and two anterior flagella. The body may be extended as podia. Movement by gliding. This image was taken by Krishnakumar B. in a sample from an anaerobic bioreactor for organic rich wastewater treatment in Regional Research Laboratory-Trivandrum (CSIR-India).
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Galende, Castile and Len, Spain
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Cercomonas crassicauda Dujardin, 1841. Cercomonad cells which are elongate-ovate, from two to two and a half times as long as broad, its substance granulate, caudal filament usually very thick at its base, tapering to a fine point at its distal end, about equal in length to the body, anterior flagellum finer and longer than the caudal filament, two or three contractile vacuoles, located near the anterior extremity, nucleus subcentral. Length of body 27 microns
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Galende, Castille and Leon, Spain
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Metopion (met-ope-ee-on) fluens Larsen and Patterson, 1990. Cell outline is ovate. Cells are 4 to 9 microns long, laterally compressed and with a small rostrum anterior to the flagellar insertion. Small bodies are seen in the protrusion or at the proximal anterior part of the cell. Two flagella of unequal size emerge from a ventral groove located in the left side of the cell. The long flagellum is about 1.5 times cell length, is thickened and is not tapered at the tip, and the short flagellum may be difficult to see. There are small granules in the posterior part of the cell. The nucleus is situated near the groove. The cells move by gliding. Rarely observed.
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Cercomonas longicauda Dujardin, 1841. Cercomonad cells which are about 10 microns long, spindle shaped and flexible. Two flagella insert subapically into a small subapical depression. The anterior flagellum is non-acronematic and about 2.5 times the cell length, and its most basal part adheres to the anterior part of the body. The acronematic posterior flagellum is about 3 times the cell length, adheres to the length of the cell and has a slow sinusoidal beat during swimming. The cell moves by gliding or swimming. Strands of cytoplasm are drawn out behind the cell during movement.
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Ribadelago, Castille and Leon, Spain