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Detail of the oral aperture and ventral proboscis of Monilicaryon monilatus Monilicaryon monilatus (Stokes, 1886) Jankowski, 1967. Similar in overall appearance to Dileptus anser. M. monilatus differs by having a shorter proboscis relative to the length of the body (1/3 to 1/4) and by lacking the row of obliquely oriented closely spaced kinetids on the ventral aspect of the left side of the proboscis (this feature requires demonstration by DIC or protargol staining). M. monilatus has two single files of kinetids extending from either side of the oral aperture anteriorly along the ventral aspect of the proboscis separated by a strip bearing extrusomes (See Foissner W., Berger H and Kohmann F. Taxonomische und ökologische Revision der Ciliaten des Saprobiensystems- Band IV: Gymnostomatea, Loxodes, Suctoria. Informationsberichte Bayer. Landesamtes für Wasserwirtschaft. 1/95:185-202, 1995). In this image the two parallel kineties along the right side of the extrusome strip are visible. Collected from a freshwater pond near Boise, Idaho. DIC.
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Dileptus (die-leapt-us) is a predatory ciliate. There is a body and a neck. The body is elliptical, tapering posteriorly, but extending anteriorly to form the neck. The neck sweeps around to try to find other protozoa or other prey. It is armed with extrusomes which kill the prey and which is then manipulated into food vacuoles by the mouth which is located at the bottom of the neck. The cells have multiple contractile vacuoles (clear structures) and an elongate macronucleus (dark in this image). This image includes an occupied and a vacated cyst. The cysts do not protect against desiccation, but probably are used when there is no food. Phase contrast.
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Mahide, Castille and Leon, Spain
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Ribadelago de Franco, Castilla y Len, Espaa
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Detail of the oral aperture and ventral proboscis of Monilicaryon monilatus Monilicaryon monilatus (Stokes, 1886) Jankowski, 1967. Similar in overall appearance to Dileptus anser. M. monilatus differs by having a shorter proboscis relative to the length of the body (1/3 to 1/4) and by lacking the row of obliquely oriented closely spaced kinetids on the ventral aspect of the left side of the proboscis (this feature requires demonstration by DIC or protargol staining). M. monilatus has two single files of kinetids extending from either side of the oral aperture anteriorly along the ventral aspect of the proboscis (See Foissner W., Berger H and Kohmann F. Taxonomische und ökologische Revision der Ciliaten des Saprobiensystems- Band IV: Gymnostomatea, Loxodes, Suctoria. Informationsberichte Bayer. Landesamtes für Wasserwirtschaft. 1/95:185-202, 1995). In this image the area between these kineties appears more refractile due to the presence of extrusomes. Collected from a freshwater pond near Boise, Idaho. DIC.
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Dileptus (die-leapt-us) is a predatory ciliate. There is a body and a neck. The body is elliptical, tapering posteriorly, but extending anteriorly to form the neck. The neck sweeps around to try to find other protozoa or other prey. It is armed with extrusomes which kill the prey and which is then manipulated into food vacuoles by the mouth which is located at the bottom of the neck, and is evident here as a slightly stiffer region just below the fold. This is the circular structure that is visible in this micrograph. The cells have multiple contractile vacuoles (clear structures). Phase contrast.
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Ribadelago de Franco, Castille and Leon, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Portrait of the large ciliate, Monilicaryon monilatus (Stokes, 1886) Jankowski, 1967. This cell is slightly compressed. Similar in overall appearance to Dileptus anser. M. monilatus differs by having a shorter proboscis relative to the length of the body (1/3 to 1/4) and by lacking the row of obliquely oriented closely spaced kinetids on the ventral aspect of the left side of the proboscis (this feature requires demonstration by DIC or protargol staining). M. monilatus has two single files of kinetids extending from either side of the oral aperture anteriorly along the ventral aspect of the proboscis separated by a strip bearing extrusomes (See Foissner W., Berger H and Kohmann F. Taxonomische und ökologische Revision der Ciliaten des Saprobiensystems- Band IV: Gymnostomatea, Loxodes, Suctoria. Informationsberichte Bayer. Landesamtes für Wasserwirtschaft. 1/95:185-202, 1995). The moniliform macronucleus is seen here. There are 20-40 small dorsal contractile vacuoles each emptying through a single excretory pore. There is often a larger contractile vacuole at the base of the tail. Collected from a freshwater pond near Boise, Idaho. DIC.
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Dileptus (die-leapt-us) is a predatory ciliate. There is a body and a neck. The body is elliptical, tapering posteriorly, but extending anteriorly to form the neck. The neck sweeps around to try to find other protozoa or other prey. The flexibility of the cells is illustrated here. It is armed with extrusomes which kill the prey and which is then manipulated into food vacuoles by the mouth which is located at the bottom of the neck. The cells have multiple contractile vacuoles (clear structures) and an elongate macronucleus (dark in this image). Phase contrast.
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Candanchu, Aragon, Spain
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Detail of the dorsal surface of Monilicaryon monilatus (Stokes, 1886) Jankowski, 1967 showing the single excretory pore of several of the 20 to 40 small contractile vacuoles(See Foissner W., Berger H and Kohmann F. Taxonomische und ökologische Revision der Ciliaten des Saprobiensystems- Band IV: Gymnostomatea, Loxodes, Suctoria. Informationsberichte Bayer. Landesamtes für Wasserwirtschaft. 1/95:185-202, 1995). There is often a larger contractile vacuole at the base of the tail. Collected from a freshwater pond near Boise, Idaho. DIC.
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Dileptus (die-leapt-us) is a predatory ciliate. There is a body and a neck. The body is elliptical, tapering posteriorly, but extending anteriorly to form the neck. The neck sweeps around to try to find other protozoa or other prey. It is armed with extrusomes which kill the prey and which is then manipulated into food vacuoles by the mouth which is located at the bottom of the neck. The cells have multiple contractile vacuoles (clear structures) and an elongate macronucleus (dark in this image). Phase contrast.
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Dileptus (die-leapt-us) is a predatory ciliate. There is a body and a neck. The body is elliptical, tapering posteriorly, but extending anteriorly to form the neck. The neck sweeps around to try to find other protozoa or other prey. It is armed with extrusomes which kill the prey and which is then manipulated into food vacuoles by the mouth which is located at the bottom of the neck. This is the circular structure that is visible in this micrograph. Phase contrast.
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Portrait of Dileptus, large haptorid ciliate with long very flexible proboscis - directed to the right, which the organism casts about as part of its feeding behaviour. The oval cytostome is located at the junction of body and proboscis. Densely packed toxicysts line the ventral surface of the proboscis. The cell is pointed posteriorly. Multiple small contractile vacuoles along dorsum. From aquaculture pond at koi farm near Boise, Idaho. Brightfield.
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Portrait of Dileptus, large haptorid ciliate with long very flexible proboscis - directed to the right, which the organism casts about as part of its feeding behaviour. The oval cytostome is located at the junction of body and proboscis. Densely packed toxicysts line the ventral surface of the proboscis. The cell is pointed posteriorly. Multiple small contractile vacuoles along dorsum. From aquaculture pond at koi farm near Boise, Idaho. Brightfield.n
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Predatory ciliate, the snout (to the right) sweeps around and if prey are encountered toxic extrusomes are discharged. The mouth is at the base of the snout. The body is evenly ciliates. Phase contrast microscopy.
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Description: English: Resting Cyst of Dileptus viridis. Date: 9 June 2015, 16:20:20. Source: Own work. Author:
Deuterostome.
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Description: English: A Dileptus from a pond in Wakefield, Quebec,. Date: 9 October 2013, 10:34:01. Source: Own work. Author:
Deuterostome.
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Description: English: Dileptus sp. ciliate protists, from a pond in Wakefield, Quebec. Filmed by Bruce Taylor. Date: 23 October 2011. Source: Own work. Author:
Deuterostome.