black and white portrait
Heteronema (het-err-owe-knee-ma) exaratum Larsen and Patterson, 1990. Cells are ovate, 8 to 18 microns long, dorso-ventrally flattened, and metabolic, but not vigorously so. The cells have a small ingestion organelle and pellicular striations following an S-helix on both faces of the cell. The dorsal striations are more strongly developed than the ventral ones. The cells usually move by skidding in a counter-clockwise direction. Two flagella are similar in length, are slightly longer than the cell and point in different directions when moving, the anterior flagellum points to the right, the posterior flagellum to the left. The posterior flagellum has a knob at its base within the flagellar pocket and is stronger than the anterior flagellum. In immotile cells, the flagella coil up. The reservoir and nucleus are in the left side of the cell. 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).
download as pdf file
 download large file
 classification page
 comment image
|
Heteronema exaratum
From the collection
Heterotrophic flagellates of Botany Bay, Sydney, Australia
| Description of Heteronema exaratum: Cells are ovate, 8 to 18 microns long, dorso-ventrally flattened, and metabolic, but not vigorously so. The cells have a small ingestion organelle and pellicular striations following an S-helix on both faces of the cell. The dorsal striations are more strongly developed than the ventral ones. The cells usually move by skidding in a counter-clockwise direction. Two flagella are similar in length, are slightly longer than the cell and point in different directions when moving; the anterior flagellum points to the right, the posterior flagellum to the left. The posterior flagellum has a knob at its base within the flagellar pocket and is stronger than the anterior flagellum. In immotile cells, the flagella coil up. The reservoir and nucleus are in the left side of the cell. |
|
