Trachelomonas: Difference between revisions
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| familia = [[Euglenaceae]] |
| familia = [[Euglenaceae]] |
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| genus = '''''Trachelomonas''''' |
| genus = '''''Trachelomonas''''' |
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| genus_authority = [[Christian Gottfried Ehrenberg|Ehrenberg]], 1833 |
| genus_authority = [[Christian Gottfried Ehrenberg|Ehrenberg]], 1833<ref name=EOL/> |
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'''''Trachelomonas''''' is a genus of swimming, free-living [[Euglenid]]s characterized by the presence of a shell-like covering called a [[Lorica (biology)|lorica]].<ref name=EOL>{{cite web|url=http://eol.org/pages/11712/overview |accessdate=28 August 2018 |title=Trachelomonas |website=Encyclopedia of Life}}</ref> Details of lorica structure determine the classification of distinct species in the genus.<ref name=EOL/> The lorica can exist in spherical, elliptical, cylindrical, and pyriform (pear-shaped) forms and measures anywhere from 5 to 100 μ in diameter or length. The lorica surface can be smooth, punctuate or striate and range from hyaline, to yellow, or brown. These colors are due to the accumulation of ferric hydroxide and manganic oxide deposited with the mucilage and minerals that comprise the lorica. In ''Trachelomonas'', the presence of a lorica obscures cytoplasmic details of the underlying cell. In each ''Trachelomonas'' cell, there is a gap at the apex of the lorica from which the flagellum protrudes. Thickening around this gap results in a rim-like or collar-like appearance. During asexual reproduction, the nucleus divides yielding two daughter cells one of which exits through the opening in the lorica. This new cell then synthesizes its own new lorica. |
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== References == |
== References == |
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Revision as of 21:12, 28 August 2018
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Trachelomonas is a genus of swimming, free-living Euglenids characterized by the presence of a shell-like covering called a lorica.[1] Details of lorica structure determine the classification of distinct species in the genus.[1] The lorica can exist in spherical, elliptical, cylindrical, and pyriform (pear-shaped) forms and measures anywhere from 5 to 100 μ in diameter or length. The lorica surface can be smooth, punctuate or striate and range from hyaline, to yellow, or brown. These colors are due to the accumulation of ferric hydroxide and manganic oxide deposited with the mucilage and minerals that comprise the lorica. In Trachelomonas, the presence of a lorica obscures cytoplasmic details of the underlying cell. In each Trachelomonas cell, there is a gap at the apex of the lorica from which the flagellum protrudes. Thickening around this gap results in a rim-like or collar-like appearance. During asexual reproduction, the nucleus divides yielding two daughter cells one of which exits through the opening in the lorica. This new cell then synthesizes its own new lorica.
References
- ^ a b c "Trachelomonas". Encyclopedia of Life. Retrieved 28 August 2018.