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Ventral infraciliature of Chilodonella uncinata (EHRENBERG,1838) STRAND, 1928. Stained by the silver carbonate technique (Foissner,W. Europ. J. Protistol.27:313-330;1991).Brightfield.
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Ventral view of Chilodonella uncinata (EHRENBERG,1838) STRAND,1928. DIC
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Chilodonella belongs to a morphological group called cyrtophorids which is characterized by special basket formed oral region. It was collected from littoral region (stand of Phragmites) of a rain storage reservoir in Kiel (Schleswig-Holstein, Germany). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
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This image was taken with DIC of ATCC 50194. Chlamydodontid ciliates, with distinct postoral break or unciliated field in ventral somatic kineties; preoral kinety complete. The cell has a flat ventral surface and an arched dorsal surface. The cytostome is anterio-ventrally situated and is supported by a protrusible basket of nemadesmata. The dorsal surface is unciliated, except subapically near the left margin there is a single kinety consisting of 5-20 ciliated kinetosomes. Three kineties are associated with the oral region: two circumoral kineties and one preoral kinety above the cytostome; the preoral kinety extends obliquely to the left of the ciliate. There are several longitudinal somatic kineties on the ventral surface; those on the right curve around the anterior end while those on the left extend only to the preoral kinety. The central postoral region lacks cilia. The macronucleus is spheroid to ellipsoidal and located near the posterior. Two contractile vacuoles are usually located on the upper right and lower left of the cell. This ciliate glides quickly over surfaces.
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Group of Chilodonella feeding on bacteria. Macronuclei are prominent. ATCC 50194.
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Originally described by Ehrenberg under the name Chilodon uncinata.
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Portrait of Chilodonella caudata (Stokes, 1885) , a hypostome ciliate. This species is distinguished by the sharply pointed caudal spine (CS) arising from the dorsal surface and a sharply notched anterolateral rostrum. The dorsal brush of cilia (DB) is visible here. Collected from a fresh water pond near Boise, Idaho.DIC.
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Ventral view of Chilodonella caudata (Stokes, 1885) , a hypostome ciliate. This species is distinguished by the sharply pointed caudal spine (not seen from the ventral aspect) arising from the dorsal surface and a sharply notched anterolateral rostrum. The cytostome (CS), right and left somatic kineties (RSK,LSK) and postoral bare area (BA) are seen well here.Collected from a fresh water pond near Boise, Idaho.DIC.
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Lateral view of Chilodonella caudata (STOKES, 1885) , a hypostome ciliate. This species is distinguished by the sharply pointed caudal spine (CS) arising from the dorsal surface and a sharply notched anterolateral rostrum. The cytopharyngeal basket of the cyrtos type (CY) and the macronucleus (MN) are seen well here.Collected from a fresh water pond near Boise, Idaho.DIC.
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in vivo image of undescribed species of Chlamydonellopsis (BLATTERER & FOISSNER,1990).The yellow arrowheads indicate the two diagonally opposed contractile vacuoles. Collected from a slow-moving freshwater stream near Boise,Idaho.March 2007.DIC.
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in vivo image of undescribed species of Chlamydonellopsis (BLATTERER & FOISSNER,1990).The yellow circle marks three nonmotile ventral protoplasmic protuberances. At first glance these can be mistaken for adherent bacteria.Usually visible only with DIC. This species differs from the other freshwater species ( C. pleurivacuolata and C. polonica) both of which have more numerous somatic kineties. C. pleurivacuolata has >2 contractile vacuoles and more numerous ventral protuberances. The ventral protuberances of C. polonica have probably been overlooked. Collected from a slow-moving freshwater stream near Boise,Idaho.March 2007.DIC.
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Dysteria (dist-ear-ee-a) is a hypostome ciliate. Like other hypostomes it favours particular food such as algae. The cell on the right has eaten blue-green (bacterial) algae and red (purple) sulphur bacteria. They can pick up their food using a jaw system made of stout rods capped with teeth. The tip of one of these rods can be seen inside the cell at about 1 o clock from the centre of the cell. Cilia in this genus are restricted to a broad band running along the lateral margins of the cell. There is also a collection of cilia that form a podite - or attachment structure. Differential interference contrast.
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Dysteria (dist-ear-ee-a) is a hypostome ciliate. Like other hypostomes it favours particular food such as algae. The cell on the right has eaten blue-green (bacterial) algae and red (purple) sulphur bacteria. They can pick up their food using a jaw system made of stout rods capped with teeth. Cilia in this genus are restricted to a broad band running along the lateral margins of the cell. There is also a collection of cilia that form a podite - or attachment structure. Differential interference contrast.
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Dysteria (dist-ear-ee-a) is a hypostome ciliate. Like other hypostomes it favours particular food such as algae. The cell on the right has eaten blue-green (bacterial) algae and red (purple) sulphur bacteria. They can pick up their food using a jaw system made of stout rods capped with teeth. Cilia in this genus are restricted to a broad band running along the lateral margins of the cell. there is also a collection of cilia that form a podite - or attachment structure. Phase contrast.
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Dysteria (dist-ear-ee-a) is a hypostome ciliate. Like other hypostomes it favours particular food such as algae. The cell on the right has eaten blue-green (bacterial) algae and red (purple) sulphur bacteria. They can pick up their food using a jaw system made of stout rods capped with teeth. Cilia in this genus are restricted to a broad band running along the lateral margins of the cell. there is also a collection of cilia that form a podite - or attachment structure. This species is distinctive because it contains numerous green symbiotic algae. Differential interference contrast.
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This image shows that the ventral side of this ciliate only has cilia on the right side (the image shows the ventral side as if viewed from the ventral side). There is a small tuft of a few closely packed cilia at the posterior end. Phase contrast micrograph.
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Ventral view of the dysteriid ciliate, Trochilia minuta (Roux, 1899) Kahl, 1931. The ventral surface is flat and the dorsum is strongly arched. Ciliature is restricted to the ventral surface except for a small dorsal brush on the left anteriorly. There are four right-sided ventral kineties. The two right-most kineties arch anterior to the cytostome to terminate at the left anterior end of the cell. There are two short preoral kineties and two very short left ventral kineties at the level of the cytostome. The cytopharynx is supported by two stout nematodesmata. There are two contractile vacuoles. There is a posteroventral adhesive podite seen here projecting beyond the posterior end of the cell. The ovoid macronucleus is heteromerous . From a freshwater pond near Boise, Idaho. DIC.
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Lateral view of the dysteriid ciliate, Trochilia minuta (Roux, 1899) Kahl, 1931. The cell is ellipsoid in outline. The ventral surface is flat and the dorsum is strongly arched. Ciliature is restricted to the ventral surface except for a small dorsal brush on the left anteriorly. There are four right-sided ventral kineties. The two right-most kineties arch anterior to the cytostome to terminate at the left anterior end of the cell. There are two short preoral kineties and two very short left ventral kineties at the level of the cytostome. The cytopharynx is supported by two stout nematodesmata. There are two contractile vacuoles. There is a posteroventral adhesive podite seen here projecting beyond the posterior end of the cell. The ovoid macronucleus is heteromerous . From a freshwater pond near Boise, Idaho. Brightfield illumination.
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Dorsolateral view of the dysteriid ciliate, Trochilia minuta (Roux, 1899) Kahl, 1931. The ventral surface is flat and the dorsum is strongly arched. Ciliature is restricted to the ventral surface except for a small dorsal brush on the left anteriorly. There are four right-sided ventral kineties. The two right-most kineties arch anterior to the cytostome to terminate at the left anterior end of the cell. There are two short preoral kineties and two very short left ventral kineties at the level of the cytostome. The cytopharynx is supported by two stout nematodesmata (seen well here). There are two contractile vacuoles. There is a posteroventral adhesive podite seen here projecting beyond the posterior end of the cell. The ovoid macronucleus is heteromerous (seen well here dorsal to the posterior end of the cytopharynx). From a freshwater pond near Boise, Idaho. DIC.
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Ventral infraciliature of (ROUX,189Trochilia minuta9) KAHL,1931.The dark blue arrowhead indicates one of the 4 right somatic kineties.The pink arrowhead marks the 2 short left somatic kineties. The red arrowhead indicates the 2 curved perioral kineties anterior to the oral apparatus (yellow arrowhead). The light blue arrowhead marks the equatorial remnant basal bodies of the left somatic ciliary field.The green arrowhead marks densely impregnated granular material at the location of the posterior podite. the attached tendril may represent material secreted by the podite. For further details see: Deroux, G. Plan cortical des Cyrtophorida.III- les structures différenciatrices chez les Dysteriina. Protistologica 12 (No.4) p. 505-538, 1976. Collected from stagnant organically enriched water at the edge of a freshwater stream near Boise, Idaho. May 2007. Stained by the silver carbonate technique (Foissner,W. Europ. J. Protistol.27:313-330;1991).Brightfield.
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Ventral infraciliature of Trochilia minuta (ROUX,1899) KAHL,1931. Collected from stagnant organically enriched water at the edge of a freshwater stream near Boise, Idaho. May 2007. Stained by the silver carbonate technique (Foissner,W. Europ. J. Protistol.27:313-330;1991).Brightfield.
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Ventral view of the small marine dysteriid ciliate, Trochilia sigmoides (Dujardin,1841).This is the type species for the genus, Trochilia.The cell outline is ovoid. The dorsum is arched with deep S-shaped grooves.The ventral surface is flat. Ciliature is restricted to the ventral surface except for a small left anterior dorsal brush (visible at the shallow notch in this view.Several right somatic kineties are visible here.The ventral cytostome is supported by two stout nematodesmata (the anterior ends of which are seen here). There is a prominent posteroventral adhesive podite seen end-on here.Collected from tide pools at Alkai Beach,Seattle, Washington 47°35'41.87" N;122° 23'17.57" W.January 2006.DIC.
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Dorsal view of the small marine dysteriid ciliate, Trochilia sigmoides (Dujardin,1841).This is the type species for the genus, Trochilia.The cell outline is ovoid. The dorsum is arched with deep S-shaped grooves.The ventral surface is flat. Ciliature is restricted to the ventral surface except for a small left anterior dorsal brush.The ventral cytostome is supported by two stout nematodesmata. There is a prominent posteroventral adhesive podite. Collected from tide pools at Alkai Beach,Seattle washingto 47°35'41.87" N;122° 23'17.57" W.January 2006.DIC.