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Portrait of the nassulid ciliate, Nassula picta Nassulides pictus (Greeff, 1888) Foissner, Agatha and Berger, 2002.The cell shape is broadly ovate and slightly flattened.The cell is brightly colored by food vaculoes containing cyanobacteria and algae in various stages of digestion.Cortical alveolae and mucocysts form a distinct pellicular rim (seen here).The cytostome, located in the anterior 1/4 of the cell, is supported by stout nematodesmata.The single contractile vacuole is equatorial. The spherical macronucleus and adjacent micronucleus are central.The somatic kineties are bipolar.There is a synhymenium or hypostomial frange compsed of rectangular groups of kinetids in three rows.The group closest to the cytostome is largest. These groups (7-8) of kinetids are arrange obliquely to the somatic kineties. The obliquity of the hypostomial frange elements distinguishes Nassulides from the otherwise similar genus Nassula in which the elements are perpendicular to the long axis of the cell.The left somatic kineties are interrupted by the synhymenium.The synhymenium extends only slightly onto the dorsum (unlike Obertrumia). Collected from an organically enriched rainwater pool with abundant decaying grass in Boise, Idaho. January 2006.DIC.
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In vivo surface view of the nassulid ciliate, Nassulides pictus (Greeff, 1888) Foissner, Agatha and Berger, 2002.The cell shape is broadly ovate and slightly flattened.The cell is brightly colored by food vaculoes containing cyanobacteria and algae in various stages of digestion.Cortical alveolae and mucocysts (seen here) form a distinct pellicular rim.The cytostome, located in the anterior 1/4 of the cell, is supported by stout nematodesmata.The single contractile vacuole is equatorial. The spherical macronucleus and adjacent micronucleus are central.The somatic kineties are bipolar.There is a synhymenium or hypostomial frange compsed of rectangular groups of kinetids in three rows.The group closest to the cytostome is largest. These groups (7-8) of kinetids are arrange obliquely to the somatic kineties.The obliquity of the hypostomial frange elements distinguishes Nassulides from the otherwise similar genus Nassula in which the elements are perpendicular to the long axis of the cell.The left somatic kineties are interrupted by the synhymenium.The synhymenium extends only slightly onto the dorsum (unlike Obertrumia). Collected from an organically enriched rainwater pool with abundant decaying grass in Boise, Idaho. January 2006.DIC.
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Stained by the silver carbonate technique (see Foissner, W.Europ. J. Protistol.27:313-330;1991).Brightfield.
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Stained by the silver carbonate technique (see Foissner, W.Europ. J. Protistol.27:313-330;1991).Brightfield.
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Stained by the silver carbonate technique (see Foissner, W.Europ. J. Protistol.27:313-330;1991).Brightfield.
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The semicircular paraoral membrane (green arrow), anterior to the oral aperture, is composed of dikinetids oriented perpendicular to the long axis of the membrane. The posterior (left) basal body of each pair is unciliated.The single nassulid organelle (yellow arrow), located posterior to the oral aperture, is composed of seven groups of three kinetids.The single excretory pore of the contractile vacuole is indicated by the pink arrow. The cytopyge is indicated by the light blue arrow. Stained by the silver carbonate technique (see Foissner, W.Europ. J. Protistol.27:313-330;1991).Brightfield.
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High contrast DIC image showing slit-like oral aperture(yellow), thew cilia of the single postoral nassulid organelle (pink) and the excretory pore of the contractile vacuole (red).
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Parafurgasonia sorex: (PENARD,1922) FOISSNER & ADAM, 1981. The green arrowhead indicates a kinetid of a dorsal somatic kinety. The yellow arrowhead indicates one of the darkly stained mucocysts which occur in longitudinal files between the somatic kineties.Stained by the silver carbonate technique (see Foissner, W.Europ. J. Protistol.27:313-330;1991).Brightfield.
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Silverline system of the nassulid ciliate, Colpodidium caudatum (Wilbert,1982). The silverline system consists of an irregular meshwork between somatic kineties. Stained by the Klein-Foissner silver nitrate technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991). Brightfield.
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Ventral infraciliature of the nassulid ciliate Colpodidium caudatum (WILBERT,1982). Collected from an organically enriched temporary freshwater puddle in Boise, Idaho (43° 36â 49.03â N 116° 13â 23.77âW elev. 2674 ft.), pH 9.35; water temperature 31.1 C. July 2006. Stained by the silver carbonate technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991). Brightfield.
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Dorsal infraciliature of the nassulid ciliate Colpodidium caudatum (WILBERT,1982). Collected from an organically enriched temporary freshwater puddle in Boise, Idaho (43° 36â 49.03â N 116° 13â 23.77âW elev. 2674 ft.), pH 9.35; water temperature 31.1 C. July 2006. Stained by the silver carbonate technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991). Brightfield.
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Ventral infraciliature of the nassulid ciliate Colpodidium caudatum (WILBERT,1982).Collected from an organically enriched temporary freshwater puddle in Boise, Idaho (43° 36â 49.03â N 116° 13â 23.77âW elev. 2674 ft.). July 2006. Stained by the silver carbonate technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991). Brightfield.