portrait
Distigma (die-stig-ma), heterotrophic euglenid flagellate. There are two flagella which are attached to the cell in a flagellar pocket which is an invagination that leads to the front of the cell by a tube called the flagellar canal. The light disc near the front is the contractile vacuole which is located alongside the flagellar pocket which cannot be seen in this image. One flagellum is long, the other short. The cytoplasm has large amounts of paramylon granules. The cell can squirm (is metabolic). Phase contrast. This picture was taken by David Patterson and Mark Farmer of material from freshwater sites in the vicinity of the University of Georgia in Athens, Georgia, USA) in April, 2001 and from collections of organisms maintained at the University. Image copyright: D. J. Patterson and Mark Farmer, image used under license to MBL (micro*scope).
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Distigma
From the collection
Athens, Georgia, USA
| Description of Distigma: Euglenid, colourless, osmotrophic, elongated, unflattened cells, with pronounced euglenoid movement; 2 emergent flagella, one shorter directed laterally during swimming with a cilium-like beat, the longer directed anteriorly; no eyespot or flagellar swelling; cysts known; freshwater; type species: Distigma proteus Ehrenberg. |
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