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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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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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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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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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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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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. Most freshwater but occasionally found in brackish habitats. Differential interference contrast.
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Portrait of Trachelomonas, a loricate euglenoid flagellate. Lorica in this species has distinct collar with an aperture through which a single flagellum emerges. The lorica has been fractured exposing the cell body with its prominent stigma and thin discoid peripheral plastids. From freshwater pond near Boise, Idaho.Brightfield.
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Portrait of empty Trachelomonas armata lorica. This variety of T. armata has anterior and posterior spines of differing lengths and a smooth intervening surface and the species differs from T. hispida which is covered with shorter spines of uniform length. From freshwater pond near Boise, Idaho. Brightfield
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Portrait of empty Trachelomonas armata lorica. This variety of T. armata has anterior and posterior spines of differing lengths and a smooth intervening surface and the species differs from T. hispida which is covered with shorter spines of uniform length. From freshwater pond near Boise, Idaho. Brightfield
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Trachelomonas hispida. Cell with broken lorica observed in freshwater habitats in the vicinity of Broome, Western Australia in September 2003. This image was taken using differential interference contrast optics. This work was supported by the Australian Biological Resources Study.
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Trachlomonas hispida (Euglenophyta) creeping out of its lorica - stage 1. Note long flagellum protruding from the base of the lorica and extending to the left.
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Trachelomonas hispida (Euglenophyta) creeping out of its lorica-stage 2
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Portrait of the loricate euglenoid flagellate, Trachelomonas reticulata (Klebs, 1833) Synonym: T. obovata v. klebsiana (Deflandre). The lorica is egg-shaped. The collar of the flagellar pore of the lorica is flush with the surface. Spines are absent. The lorica has closely spaced rows of scrobiculations (shallow depressions) arranged in a left-hand spiral. The brittle lorica is light brown due to deposition of mineral salts. There is one emergent flagellum about 3 cell lengths. T. reticulata is one of the few colorless species of this genus. A separate genus, Hyalotrachelomonas (analogous to Hyalophacus), for colorless species has been suggested but not widely accepted. The cells can be examined after the pressure of a coverslip fractures the lorica. The flexible, colorless cells contain paramylon and there is a prominent red stigma (visible here). There is a single anterior contractile vacuole. The spherical nucleus is centrally located. Collected from a temporary rainwater pool with decaying grass near Boise, Idaho, March 2005. DIC.
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Detail view of the lorica of the euglenoid flagellate, Trachelomonas reticulata (Klebs, 1833) Synonym: T. obovata v. klebsiana (Deflandre). The lorica is egg-shaped. The collar of the flagellar pore of the lorica is flush with the surface. Spines are absent. The lorica has closely spaced rows of scrobiculations (shallow depressions) arranged in a left-hand spiral (seen here). The brittle lorica is light brown due to deposition of mineral salts. There is one emergent flagellum about 3 cell lengths. T. reticulata is one of the few colorless species of this genus. Collected from a temporary rainwater pool with decaying grass near Boise, Idaho, March 2005. DIC.
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Portrait of the loricate euglenoid flagellate, Trachelomonas reticulata (Klebs, 1833) Synonym: T. obovata v. klebsiana (Deflandre). The lorica is egg-shaped. The collar of the flagellar pore of the lorica is flush with the surface. Spines are absent. The lorica has closely spaced rows of scrobiculations (shallow depressions) arranged in a left-hand spiral (visible on lorica fragments here). The brittle lorica is light brown due to deposition of mineral salts. There is one emergent flagellum about 3 cell lengths. T. reticulata is one of the few colorless species of this genus. A separate genus, Hyalotrachelomonas (analogous to Hyalophacus), for colorless species has been suggested but not widely accepted. The cells can be examined after the pressure of a coverslip fractures the lorica (as seen in this image). The flexible, colorless cells contain paramylon and there is a prominent red stigma. There is a single anterior contractile vacuole. The spherical nucleus is centrally located. Collected from a temporary rainwater pool with decaying grass near Boise, Idaho, March 2005. DIC.
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Trachelomonas volvocina. Cell observed in freshwater habitats in the vicinity of Broome, Western Australia in September 2003. This image was taken using phase contrast optics. This work was supported by the Australian Biological Resources Study.
