black and white portrait
Ploeotia (plee-owe-sha) vitrea Dujardin, 1841. Cells are oval, about 14 to 40 microns long, 7 to 30 microns wide, and not very flattened. The anterior part of the cell is slightly obtuse and the posterior part of the cell is pointed. This species has ten longitudinal ridges, four dorsally, two laterally, four ventrally. Each ridge consists of two fine ridges and these structures are referred to as double raised ridges . The ridges may be well developed and two mid-ventral ridges are close to each other. The anterior flagellum is as long as the cell and beats freely from side to side, and the posterior flagellum is thick and twice as long as the cell. The hook-shaped ingestion organelle is well developed, tapers posteriorly, and has a protrusion at the top of the right hand rod. The nucleus is located in the right hand side of the cell and the reservoir is in the left side. Relatively common. This picture was taken by Won Je Lee using conventional photographic film using a Zeiss Axiophot microscope of material collected in marine sediments of Botany Bay (Sydney, Australia). The image description refers to material from Botany Bay. Image copyright: Won Je Lee, image used under license to MBL (micro*scope).
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Ploeotia vitrea
From the collection
Heterotrophic flagellates of Botany Bay, Sydney, Australia
| Description of Ploeotia vitrea: Cells are oval, about 14 to 40 microns long, 7 to 30 microns wide, and not very flattened. The anterior part of the cell is slightly obtuse and the posterior part of the cell is pointed. This species has ten longitudinal ridges; four dorsally, two laterally, four ventrally. Each ridge consists of two fine ridges and these structures are referred to as double raised ridges. The ridges may be well developed and two mid-ventral ridges are close to each other. The anterior flagellum is as long as the cell and beats freely from side to side, and the posterior flagellum is thick and twice as long as the cell. The hook-shaped ingestion organelle is well developed, tapers posteriorly, and has a protrusion at the top of the right hand rod. The nucleus is located in the right hand side of the cell and the reservoir is in the left side. |
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