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Caenomorpha (seen-owe-morph-a) sapropelica. Body medusoid with 1 to 3 posterior spines. Without somatic cilia except for a band which lies near the membranelles. The membranelles form a long spiral that encircles the body and ends in posteriorly situated cytostome. A contractile vacuole is located at the base of the spine. Symbiotic (methanogenic) bacteria occur in the cytoplasm. Move very quickly, with a jerky rotation. Between 1-4 macronuclei but always with only 1 micronucleus. Common in anoxic habitats. This specimen was collected in a bog near Konstanz, Germany. 135 microns long. Differential interference contrast.
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Caenomorpha (seen-owe-morph-a) sapropelica. Body medusoid with 1 to 3 posterior spines. Without somatic cilia except for a band which lies near the membranelles. The membranelles form a long spiral that encircles the body and ends in posteriorly situated cytostome. A contractile vacuole is located at the base of the spine. Symbiotic (methanogenic) bacteria occur in the cytoplasm. Move very quickly, with a jerky rotation. Between 1-4 macronuclei but always with only 1 micronucleus. Common in anoxic habitats. This slightly squashed specimen collected in a bog near Konstanz, Germany; measuring 135 microns. Differential interference contrast.
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Portrait of polysaprobic heterotrich ciliate Caenomorpha sapropelica (Kahl, 1927). The rigid pellicle is colorless. The anterior is bluntly cone shaped and the posterior is drawn out as a long spine. Aggregate of dense brown granules anteriorly. Somatic ciliature is reduced to a single file of thigmotactic cirri on the left side of the anterior dome. The peristome spirals around the body terminating posteriorly at the cytostome.A perizonal stripe of cilia borders the peristome anteriorly. There is an adoral zone of membranelles on the posterior margin of the peristome. Posterior contractile vacuole. Multiple macronuclei are not seen in these images. From standing freshwater pond with decaying leaves near Boise, Idaho. Oblique illumination.
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