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Chamydonella alpestris (Foissner,1979), a small hypostome ciliate. The body is strongly curved dorsally and flattened ventrally as shown in this lateral view. The single round macronucleus is located in the mid-body. There are two contractile vacuoles, one anterior and one posterior. This individual has been consuming diatoms. From freshwater pond near Boise, Idaho. Brightfield illumination.
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Chamydonella alpestris ( Foissner, 1979), a small hypostome ciliate. The body is strongly curved dorsally and flattened ventrally. Ciliature is limited to the ventral surface except for a small dorsal anterior tuft on the left (seen in this image). Kineties curve anterior to the cytostome on the right. More central kineties terminate at the cytostome. A flattened transverse Y-shaped kinety just anterior to the cytostome is considered distinctive. The circular oral aperture is supported by trichites. The single round macronucleus is located in the mid-body. There are two contractile vacuoles, one anterior and one posterior. From freshwater pond near Boise, Idaho. DIC.
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Ventral surface of Chlamydonella alpestris (Foissner, 1979), a small hypostome ciliate. The body is strongly curved dorsally and flattened ventrally. The right side is convex and the left is straight. Ciliature is limited to the ventral surface except for a small dorsal anterior tuft on the left. Kineties curve anterior to the cytostome on the right. About 10 evenly spaced longitudinal kineties extend from the level of the cytostome to the posterior end. A flattened transverse Y-shaped kinety just anterior to the cytostome is considered distinctive. A second short curved kinety lies just anterior to this. The circular oral aperture is supported by trichites. The single round macronucleus is located in the mid-body. There are two contractile vacuoles, one anterior and one posterior. This individual has consumed a diatom and green alga. Collected from freshwater pond near Boise, Idaho October 2003. DIC optics.
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Ventral surface of Chlamydonella alpestris (Foissner, 1979), a small hypostome ciliate. The body is strongly curved dorsally and flattened ventrally. The right side is convex and the left is straight. Ciliature is limited to the ventral surface except for a small dorsal anterior tuft on the left. Kineties curve anterior to the cytostome on the right. About 10 evenly spaced longitudinal kineties extend from the level of the cytostome to the posterior end. A flattened transverse Y-shaped kinety just anterior to the cytostome is considered distinctive. A second short curved kinety lies just anterior to this. The circular oral aperture is supported by trichites. The single round macronucleus is located in the mid-body. There are two contractile vacuoles, one anterior and one posterior(both seen here). This individual has consumed a diatom and green alga. Collected from freshwater pond near Boise, Idaho October 2003. DIC optics.
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Ventral surface of Chlamydonella alpestris (Foissner, 1979) in mid-division. C. alpestris is a small hypostome ciliate. The body is strongly curved dorsally and flattened ventrally. The right side is convex and the left is straight. The cell shape has been distorted by fixation. Ciliature is limited to the ventral surface except for a small dorsal anterior tuft on the left. Kineties curve anterior to the cytostome on the right. About 10 evenly spaced longitudinal kineties extend from the level of the cytostome to the posterior end. A flattened transverse Y-shaped kinety just anterior to the cytostome is considered distinctive (yellow arrowheads). A second short curved kinety lies just anterior to this. The circular oral aperture is supported by trichites. The single round macronucleus is located in the mid-body (not visible here). There are two contractile vacuoles, one anterior and one posterior. This individual has consumed a diatom and green alga. Collected from freshwater pond near Boise, Idaho October 2003. Silver carbonate stain (see Foissner, W.Europ. J. Protistol.27,313-330;1991). Black and white.Brightfield optics.
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Ventral surface of Chlamydonella alpestris (Foissner, 1979), a small hypostome ciliate. The body is strongly curved dorsally and flattened ventrally. The right side is convex and the left is straight. Ciliature is limited to the ventral surface except for a small dorsal anterior tuft on the left. Kineties curve anterior to the cytostome on the right. About 10 evenly spaced longitudinal kineties extend from the level of the cytostome to the posterior end. A flattened transverse Y-shaped kinety just anterior to the cytostome is considered distinctive. A second short curved kinety lies just anterior to this. The circular oral aperture is supported by trichites. The single round macronucleus is located in the mid-body. There are two contractile vacuoles, one anterior and one posterior(both seen here). This individual has consumed a diatom and green alga. Collected from freshwater stream near Boise, Idaho March 2007. DIC optics.