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Saccinobaculus (sax-in-o-back-you-lus) (snake-in-a-sack) is a highly active oxymonad flagellate in which the massive contractile axostyle inside the cell seems to have a life of its own. Axostyle curves around the anterior nucleus before extending the length of the cell and projecting from the back of the cell. Endobiotic in the gut of the wood-eating cockroach, Cryptocercus. Phase contrast.
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Bodo designis, small flagellate, with two flagella, moving with a rotating motion, skipping or gliding motion. The flagella insert into a small subapical pocket, as is suggested by the subapical depression. One of the most common of the bodonids, found in almost every habitat so far studied. Moves by skipping near surfaces. It stops to ingest attached or detrital bacteria with the anterior mouth (in the rostrum). Phase contrast.
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Stephanopogon (steff-ann-owe-poe-gone) apogon Borror, 1965. Cells are about 18 - 32 microns long with several lows of kineties and dorso-ventrally flattened. The cells have a mouth located at the anterior end of a flattened neck of the cell. The cells crawl or swim with flagella. Rarely observed.
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Eutreptiella (you-trep-tea-ella), a marine euglenid. The autotrophic euglenids (the ones with chloroplasts) are usually thought of as being freshwater organisms. A small number of species are found in marine habitats - the most commonly reported being Eutreptia (flagella equal in length) and Eutreptiella (flagella unequal in length) . Both have two or more emergent flagella, and these beat actively to propel the cell through the water. Euglenids have chlorophyll b in the plastids, and this gives them a bright green colour. The eyespot (stigma) lies outside the plastids. Euglenids are distinguished, in part, by the ridges under the cell membrane. This detailed image shows the pellicular ridges and the individual plastids. Differential interference contrast
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Trachelomonas (track-ell-owe-moan-ass) is an autotrophic euglenid flagellate. The genus is distinguished from others because the cells live within a loose fitting lorica with a small opening. The lorica of many species is elaborated with spikes or spines. The lorica accumulates metal salts with age, becoming brown and brittle and often obscuring the bright green colour of the chloroplasts within the cell. Red eyespot evident as dark region near the anterior of the cell. There is one emergent flagellum which emerges from the opening of the lorica. After division of the daughter cells will emerge from the opening of the lorica. Most freshwater but occasionally found in brackish habitats. Phase contrast.
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Saccinobaculus (sax-in-o-back-you-lus) (snake-in-a-sack) is a highly active oxymonad flagellate in which the massive contractile axostyle inside the cell seems to have a life of its own. Axostyle curves around the anterior nucleus before extending the length of the cell and projecting from the back of the cell. Four flagella emerging from anterior right corner. Endobiotic in the gut of the wood-eating cockroach, Cryptocercus. Phase contrast.
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Bodo (beau-dough) small kinetoplastid flagellate, with one anterior flagellum and one trailing one. In this species, the mouth region is quite prominent and directed to the anterior. In this respect it is reminiscent of Dimastigella, and the identification is tentative. Appearance of different clones quite variable. Phase contrast microscopy.
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Stephanopogon apogon Borror, 1965. Cells are about 18 - 32 microns long with several lows of kineties and dorso-ventrally flattened. The cells have a mouth located at the anterior end of a flattened neck of the cell. The cells crawl or swim with flagella. Rarely observed.
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Stephanopogon (steff-ann-owe-poe-gone) colpoda Entz, 1884. Cells are about 16 - 30 microns long and dorso-ventrally flattened with several rows of kineties. The ventral surface terminates anteriorly as three barbs. The cells move by crawling or swimming with flagella. Rarely observed.
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Eutreptiella (you-trep-tea-ella), a marine euglenid. The autotrophic euglenids (the ones with chloroplasts) are usually thought of as being freshwater organisms. A small number of species are found in marine habitats - the most commonly reported being Eutreptia (flagella equal in length) and Eutreptiella (flagella unequal in length) . Both have two or more emergent flagella, and these beat actively to propel the cell through the water. Euglenids have chlorophyll b in the plastids, and this gives them a bright green colour. Differential interference contrast.
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Trachelomonas (track-ell-owe-moan-ass) is an autotrophic euglenid flagellate. The genus is distinguished from others because the cells live within a loose fitting lorica with a small opening. The lorica of many species is elaborated with spikes or spines. The lorica accumulated metal salts with age, becoming brown and brittle - as is evident here. The lorica usually obscures the bright green colour of the chloroplasts within the cell. Red eyespot evident as dark region near the anterior of the cell. There is one emergent flagellum which emerges from the opening of the lorica. After division of the daughter cells will emerge from the opening of the lorica. Most freshwater but occasionally found in brackish habitats. Phase contrast.
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Some amoebae represent a threat to human health - they are the cause of an infection of the brain called amebic meningitis. Most of the forms which cause problems are known to favor warm waters - and the heated waters of Yellowstone present a heightened risk of infection - hence these informative signs to alert the public to the risks they take should they chose to swim in these waters.
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Bodo (beau-dough) small kinetoplastid flagellate, with one anterior flagellum and one trailing one. In this species, the mouth region is quite prominent and directed to the anterior. In this respect it is reminiscent of Dimastigella, and the identification is tentative. Appearance of different clones quite variable. Phase contrast microscopy.
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This drawing presents the authors understanding of the ultrastructural organization of the mouth region of Stephanopogon apogon. The opening of the mouth is to the left, and is surrounded by lips. These are strengthened inside by a quoit of fibrous material. Rods of microtubules support the region leading into the body, and there are many small gland-like folds of the membrane leading into this region. The body is supported by flat ribbons of microtubules. There are flagella on the lower surface of the cell and these are held in place by crown-like arrays of microtubules, and are interconnected by flat plates of material.
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Stephanopogon colpoda Entz, 1884. Cells are about 16 - 30 microns long and dorso-ventrally flattened with several rows of kineties. The ventral surface terminates anteriorly as three barbs. The cells move by crawling or swimming with flagella. Rarely observed.
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Eutreptiella (you-trep-tea-ella), a marine euglenid. The autotrophic euglenids (the ones with chloroplasts) are usually thought of as being freshwater organisms. A small number of species are found in marine habitats - the most commonly reported being Eutreptia (flagella equal in length) and Eutreptiella (flagella unequal in length) . Both have two or more emergent flagella, and these beat actively to propel the cell through the water. Euglenids have chlorophyll b in the plastids, and this gives them a bright green colour. The eyespot (stigma) lies outside the plastids. In this preparation some of the cells lacking flagella and aggregated to form a structure referred to as palmelloid. Differential interference contrast.
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Trachelomonas (track-ell-owe-moan-ass) is an autotrophic euglenid flagellate. The genus is distinguished from others because the cells live within a loose fitting lorica with a small opening. The lorica of many species is elaborated with spikes or spines. The lorica accumulates metal salts with age, becoming brown and brittle and often obscuring the bright green colour of the chloroplasts within the cell. Red eyespot evident near the anterior of the cell. There is one emergent flagellum which emerges from the opening of the lorica. After division of the daughter cells will emerge from the opening of the lorica. Most freshwater but occasionally found in brackish habitats. Phase contrast.
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Bodo (beau-dough) small kinetoplastid flagellate, with one anterior flagellum and one trailing one. In this species, the mouth region is quite prominent and directed to the anterior. In this respect it is reminiscent of Dimastigella, and the identification is tentative. Appearance of different clones quite variable. Phase contrast microscopy.