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Differential Interference Contrast.
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Mucilaginous colonies of Ophrydium versatile.
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Vaginicola (vadge-in-ick-cola) tincta, two individuals in their lorica which has a flat bottom and no stalk. This specimen was collected in a pond near Konstanz, Germany. Differential interference contrast.
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Portrait of Platycola. This peritrich ciliate resides in a simple non-valved lorica with a curved neck. The lorica adheres to the substrate along its length. Most often two individuals per lorica. From freshwater pond with abundant filamentous algae near Boise, Idaho. Oblique illumination.
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Originally described by Ehrenberg under the name Vaginicola tinctus.
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Platycola, a loricate peritrich. This one forms a flattened lorica with apical apertures through which the cells extend while feeding. The cell cannot be seen clearly. The lorica appears transparent when first formed but gets darker with age. From Lake Donghu, China. Phase contrast micrograph.
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Portrait of the peritrich ciliate, Cyclodonta bipartita (Stokes, 1885) Matthes, 1958. Usually found as an epibiont of freshwater copepods. The cells are contained in a vase-shaped transparent lorica that has fine longitudinal striations. The lorica has a short, stout noncontractile stalk. The cell is attached to the posterior portion of the lorica by a series of membranes and does not protrude from the lorica. The cell body is cylindrical in cross section, rounded posteriorly and transversely truncate anteriorly. The cell surface has fine transverse striations. The macronucleus is ellipsoid. There is a single contractile vacuole. Found on the surface of a cyclopoid copepod collected from a freshwater pond near Boise, Idaho March 2005. DIC
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Platycola, a loricate peritrich. This one forms a flattened lorica with apical apertures through which the cells extend while feeding. Two contracted cells lie inside the lorica. The lorica appears transparent when first formed but gets darker with age. From Lake Donghu, China. Differential interference contrast micrograph.
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Portrait of the peritrich ciliate, Cyclodonta bipartita (Stokes, 1885) Matthes, 1958. Usually found as an epibiont of freshwater copepods. The cells are contained in a vase-shaped transparent lorica that has fine longitudinal striations. The lorica has a short, stout noncontractile stalk. The cell is attached to the posterior portion of the lorica by a series of membranes and does not protrude from the lorica. The cell body is cylindrical in cross section, rounded posteriorly and transversely truncate anteriorly. The cell surface has fine transverse striations. The macronucleus is ellipsoid. There is a single contractile vacuole. Found on the surface of a cyclopoid copepod collected from a freshwater pond near Boise, Idaho March 2005. DIC
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Platycola has mounted its lorica upside down on the Hyponeuston, the aquatic area closely attached to the water surface. Obviously the water´s surface tension was more attractive than the petri dish ore bunches of filamentous algae. Sample from a little creek near Kiel. This image was taken using Zeiss Universal with Olympus C7070 CCD camera.
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Portrait of the peritrich ciliate, Cyclodonta bipartita (Stokes, 1885) Matthes, 1958. Usually found as an epibiont of freshwater copepods. The cells are contained in a vase-shaped transparent lorica that has fine longitudinal striations. The lorica has a short, stout, noncontractile stalk. The cell is attached to the posterior portion of the lorica by a series of membranes and does not protrude from the lorica. The cell body is cylindrical in cross section, rounded posteriorly and transversely truncate anteriorly. The cell surface has fine transverse striations. The macronucleus is ellipsoid. There is a single contractile vacuole. Found on the surface of a cyclopoid copepod collected from a freshwater pond near Boise, Idaho March 2005. DIC
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Originally described by Ehrenberg under the name Vaginicola decumbens.
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Pyxicola (pig-sick-cola) carteri with opened cap of the lorica. The cap is part of the cell and not of the lorica. This specimen was collected in freshwater ponds near Konstanz, Germany. Differential interference contrast.
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A colonial peritrich ciliate, Carchesium. Similar to Zoothamnium but Carchesium is distinguished by zooids with discontinuous myonemes allowing individuals of the branched colony to contract independently. However, the entire colony may contract simultaneously. The stalk of Carchesium contracts in a spiral configuration unlike Zoothamnium and Pseudocarchesium whose stalks are described as contracting in a zig-zag fashion. From freshwater pond near Boise, Idaho. Brightfield.
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Pyxicola (pig-sick-cola) carteri with opened cap of the lorica. The cap is part of the cell and not of the lorica. This cell has a closed lorica. The individual can pull down and tighten the cap by contraction of the body. This specimen was collected in freshwater ponds near Konstanz, Germany. Differential interference contrast.
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Carchesium a colonial peritrich similar to Zoothamnium but Carchesium is distinguished by zooids with discontinuous myonemes allowing individuals of the branched colony to contract independently. However, as seen in this image, the entire colony may contract simultaneously. The stalk of Carchesium contracts in a spiral configuration, seen in this image, unlike Zoothamnium and Pseudocarchesium whose stalks are described as contracting in a zig-zag fashion. Pseudocarchesium also has discontinuous myonemes. From a freshwater pond near Boise, Idaho. Brightfield.
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Scale bar indicates 50 µm. Collected from Bodden, the brackish waters lying between the isles of Hiddensee and Ruegen (German Baltic Sea). The image was built up using several photomicrographic frames with manual stacking technique. This image was taken using Zeiss Universal with Olympus C7070 CCD camera.
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This peritrich is one of a number of genera that occurs in colonies. It is distinguishable from Zoothamnium in that the whole colony does not contract together when a single cell is stimulated. feeds on bacteria. Bright field illumination.
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Scale bar indicates 50 µm. Collected from Bodden, the brackish waters lying between the isles of Hiddensee and Ruegen (German Baltic Sea). The image was built up using several photomicrographic frames with manual stacking technique. This image was taken using Zeiss Universal with Olympus C7070 CCD camera.
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Colony of Carchesium spec. sitting on red alga Polysiphonia fibrillosa. The cells are redy to transform into free swimmung swarmers by developing the telotroch, a marginally ciliary fringe. Collected from Bodden, the brackish waters lying between the isles of Hiddensee and Ruegen (German Baltic Sea). This image was taken using Zeiss Universal with Olympus C7070 CCD camera.