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Vorticella patellina.
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San Andres Y Sauces, Canary Islands, Spain
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Surface detail of the peritrich ciliate, Pseudovorticella chlamydophora (Penard, 1922) Jankowski, 1976. Pseudovorticella is distinguished from Vorticella by silver staining which reveals a lattice-like silver line system in the former and circumferential lines without vertical connections in the latter. Pseudovorticella also has two contractile vacuoles. P. chlamydophora is distinguished by a distinct hyaline layer consisting of large cuboid pellicular blebs. The lattice-like pattern of these blebs is visible here. Feeds on bacteria. From freshwater pond near Boise, Idaho. DIC.
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Portrait of the peritrich ciliate, Pseudovorticella chlamydophora (Penard,1922) Jankowski, 1976. This genus is distinguished from the genus Vorticella by its grid-like silver line system. The transverse components of the silverline system of Vorticella species have no vertical connections. P. Chlamydophora has a thick clear pellicular layer composed of cuboid units, which give the cell surface a distinctive quilted appearance. The extended cell is an inverted bell shape connected at the aboral scopula to a contractile stalk. The cell is spherical when contracted. The stalk contracts as a coil rather than a zigzag (e.g. Haplocaulus). The peristomal disc is almost flush. The ciliature is reduced to two rows of peristomal cilia, which beat counterclockwise toward the funnel-shaped buccal cavity (seen here to the viewers left anteriorly). The roughly C-shaped macronucleus is oriented in the long axis (to the viewers left of midline here). A single contractile vacuole is seen adjacent to the buccal cavity. The otherwise identical P. vestita has two contractile vacuoles. Multiple yellowish food vacuoles are seen here. P. chlamydophora may be gregarious but does not form true colonies. Collected from a freshwater pond near Boise, Idaho May 2004. DIC optics.
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Portrait of the peritrich ciliate, Pseudovorticella chlamydophora (Penard,1922) Jankowski, 1976. This genus is distinguished from the genus Vorticella by its grid-like silver line system. The transverse components of the silverline system of Vorticella species have no vertical connections. P. Chlamydophora has a thick clear pellicular layer composed of cuboid units, which give the cell surface a distinctive quilted appearance (seen en face here). The extended cell is an inverted bell shape connected at the aboral scopula to a contractile stalk. The cell is spherical when contracted. The stalk contracts as a coil rather than a zigzag (e.g. Haplocaulus). The otherwise identical P. vestita has two contractile vacuoles. P. chlamydophora may be gregarious but does not form true colonies. Collected from a freshwater pond near Boise, Idaho.June 2005. DIC.
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Surface detail of the peritrich ciliate, Pseudovorticella chlamydophora (Penard,1922) Jankowski, 1976. This genus is distinguished from the genus Vorticella by its grid-like silver line system. The transverse components of the silverline system of Vorticella species have no vertical connections. P. Chlamydophora has a thick clear pellicular layer composed of cuboid units, which give the cell surface a distinctive quilted appearance (seen en face here). The extended cell is an inverted bell shape connected at the aboral scopula to a contractile stalk. The cell is spherical when contracted. The stalk contracts as a coil rather than a zigzag (e.g. Haplocaulus). The otherwise identical P. vestita has two contractile vacuoles. P. chlamydophora may be gregarious but does not form true colonies. Collected from a freshwater pond near Boise, Idaho.June 2005. DIC.
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Group portrait of the gregarious but non-colonial peritrich ciliate, Pseudovorticella monilata (Tatem, 1870) Foissner and Sciffmann, 1975, all in contracted state (anterior apical view). Stalks are not visible here. The prominent pellicular blebs consist of paraglycogen, a carbohydrate storage product. From freshwater pond near Boise, Idaho. Differential interference contrast.
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Group portrait of the gregarious but non-colonial peritrich ciliate, Pseudovorticella monilata (Tatem, 1870) Foissner and Sciffmann, 1975. Some individuals have separated from their contractile stalks. From freshwater pond near Boise, Idaho. Differential interference contrast.(Tatem, 1870) Foissner and Sciffmann, 1975
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Portrait of the peritrich ciliate, Pseudovorticella monilata (Tatem, 1870) Foissner and Sciffmann, 1975. Designated as Vorticella monilata in many compendia, Foissner assigns this organism as the type species for the genus Pseudovorticella. Pseudovorticella is distinguished from Vorticella by silver staining which reveals a lattice-like silver line system in the former and circumferential lines without vertical connections in the latter. Pseudovorticella also has two contractile vacuoles (only one of which is seen here). The species is distinguished by circumferential rows of prominent pellicular blebs consisting of paraglycogen, a carbohydrate storage product. The macronucleus is J-shaped, lying in the long axis of the cell. The stalk consisting of a sheathed myonemes is seen here. Feeds on bacteria. From freshwater pond near Boise, Idaho. Differential interference contrast.
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Pellicular detail of Pseudovorticella monilata (Tatem, 1870) Foissner and Sciffmann, 1975. The species is distinguished by circumferential rows of prominent pellicular blebs seen well in this image. They consist of paraglycogen, a carbohydrate storage product. DIC.
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