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Phase contrast micrograph of the tetrahymenine ciliate. The anterior end of the cell is slightly twisted, the mouth being located at the base of this anterior region.
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Portrait (left anterolateral view) of the hymenostome ciliate Colpidium kleini (Foissner, 1969). Very similar in overall appearance to C. colpoda although usually more slender and with fewer somatic kineties. The cytostome is in the anterior 1/4 of the cell. There is a curved paraoral membrane along the convex right margin of the cytostome. The left margin is slightly concave. There are three adoral membranelles. There are 32 to 44 somatic kineties. The kineties to the right and left of the oral aperture meet at a curved preoral suture. There is an anterior apical area bare of cilia. There are rows of inconspicuous mucocysts between the somatic kineties. The ellipsoid macronucleus and adjacent micronucleus are centrally located. The single contractile vacuole is located in the midbody with a single excretory pore on the right surface. The feature most clearly distinguishing Colpidium kleini from C. coploda is the silverline system (as demonstrated by silver nitrate staining). Collected from an organically enriched freshwater pond near Boise, Idaho. DIC.
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Tetrahymena (tet-ra-high-men-a), only one thread on the entire slide and it has to land on me.
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Anterior is to the bottom of the image, there are two mouth structures - the original near the anterior end and the mouth of the daughter cell developing behind where the division furrow will form.
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Ventral infraciliature of the hymenostome ciliate Colpidium kleini (Foissner, 1969). C. kleini is very similar in overall appearance to C. colpoda although usually more slender and with fewer somatic kineties. The cytostome is in the anterior 1/4 of the cell. There is a curved paraoral membrane along the convex right margin of the cytostome. The left margin is slightly concave. There are three adoral membranelles. There are 32 to 44 somatic kineties. The kineties to the right and left of the oral aperture meet at a curved preoral suture. The right somatic kineties bend leftward at the level of the cytostome.There is an anterior apical area bare of cilia. There are rows of inconspicuous mucocysts between the somatic kineties. The ellipsoid macronucleus and adjacent micronucleus are centrally located. The single contractile vacuole is located in the midbody with a single excretory pore on the right surface. The feature most clearly distinguishing Colpidium kleini from C. coploda is the silverline system (as demonstrated by silver nitrate staining).Stained by the silver carbonate technic (see Foissner, W.Europ. J. Protistol.27,313-330;1991). Collected from an organically enriched freshwater pond near Boise, Idaho. Brightfield.
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Tetrahymena (tet-ra-high-men-a) is an oligohymenophoran ciliate. There are cilia in about 20 kineties (rows) over the body and which are used for cell locomotion. There is also a group of three membranelles and an undulating membrane around the cytostome (upper left), and these are the buccal or oral cilia and are used in food capture. In nature often associated with damaged animals or dead tissue, may eat bacteria. Widely used in laboratory studies, and axenic (bacteria-free) cultures are maintained within high protein medium. This cell is slightly compressed. Phase contrast.
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Right lateral infraciliature of the hymenostome ciliate Colpidium kleini (Foissner, 1969). C. kleini is very similar in overall appearance to C. colpoda although usually more slender and with fewer somatic kineties. The cytostome is in the anterior 1/4 of the cell. There is a curved paraoral membrane along the convex right margin of the cytostome. The left margin is slightly concave. There are three adoral membranelles. There are 32 to 44 somatic kineties. The kineties to the right and left of the oral aperture meet at a curved preoral suture. The right somatic kineties bend leftward at the level of the cytostome. There is an anterior apical area bare of cilia. There are rows of inconspicuous mucocysts between the somatic kineties. The ellipsoid macronucleus and adjacent micronucleus are centrally located. The single contractile vacuole is located in the midbody with a single excretory pore on the right surface. The feature most clearly distinguishing Colpidium kleini from C. coploda is the silverline system (as demonstrated by silver nitrate staining).Stained by the silver carbonate technic (see Foissner, W.Europ. J. Protistol.27,313-330;1991). Collected from an organically enriched freshwater pond near Boise, Idaho.Brightfield.
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Tetrahymena (tet-ra-high-men-a) is an oligohymenophoran ciliate. There are cilia in about 20 kineties (rows) over the body and which are used for cell locomotion. There is also a group of three membranelles and an undulating membrane around the cytostome, and these are the buccal or oral cilia and are used in food capture. In nature often associated with damaged animals or dead tissue, may eat bacteria. Widely used in laboratory studies, and axenic (bacteria-free) cultures are maintained within high protein medium. cells pear-shaped. Phase contrast.
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Right lateral view of the silverline system of the hymenostome ciliate Colpidium kleini (Foissner, 1969). C. kleini is very similar in overall appearance to C. colpoda although usually more slender and with fewer somatic kineties. The cytostome is in the anterior 1/4 of the cell. There is a curved paraoral membrane along the convex right margin of the cytostome. The left margin is slightly concave. There are three adoral membranelles. There are 32 to 44 somatic kineties. The kineties to the right and left of the oral aperture meet at a curved preoral suture.The right somatic kineties bend leftward at the level of the cytostome. There is an anterior apical area bare of cilia. There are rows of inconspicuous mucocysts between the somatic kineties. The ellipsoid macronucleus and adjacent micronucleus are centrally located. The single contractile vacuole is located in the midbody with a single excretory pore on the right surface. The feature most clearly distinguishing Colpidium kleini from C. coploda is the silverline system. In C. kleini there is only one secondary meridian (silverline) between two primary meridians (primary meridians correspond to somatic kineties). In some cases short segments of the secondary meridians may be duplicated. Short transverse L or T-shaped branches arise from both primary and secondary meridians at irregular intervals.Stained by the dry silver nitrate technic (see Foissner, W.Europ. J. Protistol.27,313-330;1991). Collected from an organically enriched freshwater pond near Boise, Idaho. Brightfield. Black and white.
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Tetrahymena (tet-ra-high-men-a) is an oligohymenophoran ciliate. There are cilia in about 20 kineties (rows) over the body and which are used for cell locomotion. There is also a group of three membranelles and an undulating membrane around the cytostome (upper right), and these are the buccal or oral cilia and are used in food capture. In nature often associated with damaged animals or dead tissue, may eat bacteria. Widely used in laboratory studies, and axenic (bacteria-free) cultures are maintained within high protein medium. Cells are pear-shaped. Differential interference contrast.
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Left lateral view of the silverline system of the hymenostome ciliate Colpidium kleini (Foissner, 1969). C. kleini is very similar in overall appearance to C. colpoda although usually more slender and with fewer somatic kineties. The cytostome is in the anterior 1/4 of the cell. There is a curved paraoral membrane along the convex right margin of the cytostome. The left margin is slightly concave. There are three adoral membranelles. There are 32 to 44 somatic kineties. The kineties to the right and left of the oral aperture meet at a curved preoral suture. There is an anterior apical area bare of cilia. There are rows of inconspicuous mucocysts between the somatic kineties. The ellipsoid macronucleus and adjacent micronucleus are centrally located. The single contractile vacuole is located in the midbody with a single excretory pore on the right surface. The feature most clearly distinguishing Colpidium kleini from C. coploda is the silverline system. In C. kleini there is only one secondary meridian (silverline) between two primary meridians (primary meridians correspond to somatic kineties seen here as the wavier lines). Short transverse L or T-shaped branches arise from both primary and secondary meridians at irregular intervals. In some cases short segments of the secondary meridians may be duplicated. Stained by the dry silver nitrate technic (see Foissner, W.Europ. J. Protistol.27,313-330;1991). Collected from an organically enriched freshwater pond near Boise, Idaho. Brightfield. Black and white.
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Tetrahymena (tet-ra-high-men-a) is an oligohymenophoran ciliate. There are cilia in about 20 kineties (rows) over the body and which are used for cell locomotion. There is also a group of three membranelles and an undulating membrane around the cytostome (upper left), and these are the buccal or oral cilia and are used in food capture. In nature often associated with damaged animals or dead tissue, may eat bacteria. Widely used in laboratory studies, and axenic (bacteria-free) cultures are maintained within high protein medium. Cells pear-shaped. Phase contrast.
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Oral infraciliature of Colpidium kleini (FOISSNER, 1969).There are three adoral membranelles (M1-3) and a right paraoral membrane (POM).Stained by the silver carbonate technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.
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Tetrahymena (tet-ra-high-men-a) is an oligohymenophoran ciliate. There are cilia in about 20 kineties (rows) over the body and which are used for cell locomotion. There is also a group of three membranelles and an undulating membrane around the cytostome (upper left), and these are the buccal or oral cilia and are used in food capture. In nature often associated with damaged animals or dead tissue, may eat bacteria. Widely used in laboratory studies, and axenic (bacteria-free) cultures are maintained within high protein medium. Cells pear-shaped. Phase contrast.
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Silverline system of Colpidium kleini (FOISSNER, 1969).There is a single secondary meridian (SM) between each pair of primary meridians (PM).This feature distinguishes C. kleini from the larger C. colpoda whose silverline system shows two secondary meridians between pairs of primary meridians.Stained by the dry silver nitrate technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.
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Tetrahymena (tet-ra-high-men-a) is an oligohymenophoran ciliate. Widely used in laboratory studies, and axenic (bacteria-free) cultures are maintained within high protein medium. In nature often associated with damaged animals or dead tissue. This occurrence within the cytoskeleton where they may feed on residual tissue (pieces left behind if the cytoskeleton has been shed) or on the body tissue (if the crustacea was damaged) is a good example of where this genus might be found in nature. Dark ground.
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Tetrahymena: One of the most studied protozoans. This image was taken by Krishnakumar B. in a sample from an anaerobic bioreactor for organic rich wastewater treatment in Regional Research Laboratory-Trivandrum (CSIR-India).
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Colpidium (coll-pid-ee-um) is an oligohymenophoran ciliate, very closely related to Tetrahymena. The mouth is located near the front end, it is recessed, and the body is slightly twisted in front of the mouth. Eats bacteria and often found in organically enriched sites with little available oxygen. Phase contrast.
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Colpidium (coll-pid-ee-um) is an oligohymenophoran ciliate, very closely related to Tetrahymena. The mouth is located near the front end, it is recessed, and the body is slightly twisted in front of the mouth. This detail shows the kineties at an angle anterior to the mouth. Eats bacteria and often found in organically enriched sites with little available oxygen. Phase contrast.
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An early stage of stomatogenesis in Colpidium colpoda (LOSANA,1829) STEIN,1860.Stomatogenesis is of the monoparakinetal type. The stomatogenic field (SF) is seen to the left of the midportion of K1, the stomatogenic kinety (SK).From a putrefying raw culture from a freshwater pond near Boise, Idaho.October 2007. Stained by the silver carbonate technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.
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Late stage of stomatogenesis in Colpidium colpoda (LOSANA,1829) STEIN,1860.Stomatogenesis is of the monoparakinetal type. The adoral organelles and paraoral membranelles of the opisthe (OAO)have developed from a stomatogenic field adjacent to the stomatogenic kinety in the mid-ventral portion of the cell.OAP=oral apparatus of the proter or parental cell.From a putrefying raw culture from a freshwater pond near Boise, Idaho.October 2007. Stained by the silver carbonate technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.
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Dorsal infraciliature of Colpidium colpoda (LOSANA,1829) STEIN,1860.The green arrowheads mark the oblique furrow that extends from the oral aperture accross the right side of the cell to the center of the dorsal surface.The somatic kineties are more closely spaced and bend strongly to the left in this depression.In the living cell this area appears as a more densely ciliated region on the right. From a putrefying raw culture from a freshwater pond near Boise, Idaho.October 2007. Stained by the silver carbonate technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.