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Santa Coloma, La Rioja, Spain
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Ribadelago, Castilla y Len, Espaa
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Cuelgamuros, Comunidad de Madrid, Espaa
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Castille and Leon, Spain
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Distigma sennii Pringsheim, 1942. Metabolic swimming euglenid, cell typically club-shaped, broader anteriorly and truncated with an apical canal-opening, the posterior end of cell tapers, cells are 40 - 62 microns long. With two flagella, unequal in length. The longer flagellum is about 0.25-0.35 cell length and the recurrent flagellum is very short (5 - 6 microns), slightly curved and directed sideways or to the posterior of the cell. The pellicle seems smooth. The reservoir is in the middle of the cell with an associated contractile vacuole. A nucleus is located centrally or slightly behind the centre of the cell. The cell contains a large number of ellipsoidal or cylindical refractile grains and when swimming the cell moves quickly and rotates.
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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.
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Distigma proteus Ehrenberg, 1838. Body highly metabolic, scarcely ever presenting the same contour, usually more or less elongate, with irregular constrictions and distensions, longer flagellum nearly equaling the body in length, the shorter one scarcely one quarter that length, endoplasm transparent, enclosing numerous dark coloured refringent corpuscles whose positions are constantly shifting from one extremely to the other in accordance with the peristaltic motions of the body, two minute, blackish, eye-like pigment-spots usually developed at the anterior extremity, tubular pharynx slender, greatly prolonged, contractile vacuole conspicuous, located close to the termination of the pharynx, nucleus ovate, subcentral. Length 44-106 microns
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Distigma proteus clavatum Playfair, 1921. Cells are 18-44 microns long and 8-12 microns wide. see Menoidium pellucidum var clavatum.
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Scanning electron micrographs showing two stages of contraction (metaboly).
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Sampling date 09/2009. Scale bars indicate 50 µm.Two images.First:Euglenid without chloroplasts, highly metabolic, two flagella, one of them (short one) sometimes trailing.Second:Motion study.Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!Place name: Bog Hegne Moor near Lake Constance (Germany) Latitude: 47.718106 Longitude: 9.093974Microscope Zeiss Universal, camera Olympus C7070WZ. DOF images.© Wolfgang Bettighofer,images under Creative Commons License V 3.0 (CC BY-NC-SA).For permission to use of (high resolution) images please contact
postmaster@protisten.de.For further information about the image, please click here:
Link to protisten.de page
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Sampling date 09/2009. Scale bars indicate 50 µm.Two images.First:Euglenid without chloroplasts, highly metabolic, two flagella, one of them (short one) sometimes trailing.Second:Motion study.Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!Place name: Bog Hegne Moor near Lake Constance (Germany) Latitude: 47.718106 Longitude: 9.093974Microscope Zeiss Universal, camera Olympus C7070WZ. DOF images.© Wolfgang Bettighofer,images under Creative Commons License V 3.0 (CC BY-NC-SA).For permission to use of (high resolution) images please contact
postmaster@protisten.de.For further information about the image, please click here:
Link to protisten.de page
