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Mayorella (may-or -ell-a) a medium sized free-living naked amoeba with conical pseudopodia. Central body is the nucleus. Phase contrast.
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Vannella (van-ell-a), naked free-living amoeba, moves with a single pseudopodium directed forwards (i.e. is unipodial). Hyaline region very extensive. Posteriorly, the uroid is just a stiffened region of cytoplasm. Consumes bacteria. Very similar to Platyamoeba, distinguished usually by the slightly broader aspect. This is V. aberdonica. Phase contrast.
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Korotnevella (caw-rot-know-vell-a) is an amoeba which produces (sometimes) many conical pseudopodia. The most widely encountered genus with conical pseudopodia is Mayorella. Phase contrast.
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Scale bar indicates 25 µm. Collected from Bodden, the brackish waters lying between the isles of Hiddensee and Ruegen (German Baltic Sea). The image was built up using several photomicrographic frames with manual stacking technique. The images were taken using Zeiss Universal with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA).
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Mayorella (may-or -ell-a) a medium sized free-living naked amoeba with conical pseudopodia. Catholic in feeding preferences, eating bacteria, algae, protozoa, detritus etc. Periphery hyaline, with one nucleus, and various food vacuoles. Differential interference contrast.
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Vannella (van-ell-a), naked free-living amoeba, moves with a single pseudopodium directed forwards (i.e. is unipodial). Hyaline region very extensive. Posteriorly, the uroid is just a stiffened region of cytoplasm. Consumes bacteria. Very similar to Platyamoeba, distinguished usually by the slightly broader aspect. This is V. aberdonica. Phase contrast.
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Korotnevella (caw-rot-know-vell-a) is an amoeba which produces (sometimes) many conical pseudopodia. The most widely encountered genus with conical pseudopodia is Mayorella. This cell has adopted the limax form. Phase contrast.
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Mayorella (may-or -ell-a) is one of the more catholic free-living naked amoeba. I This genus is distinguished primarily by the conical shape of the growing pseudopodia . The rear end of these amoebae is referred to as a uroid, and looks contracted or crumpled. Will eat a wide variety of materials. Phase contrast.
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Vannella (van-ell-a), naked free-living amoeba, moves with a single pseudopodium directed forwards (i.e. is unipodial). Hyaline region very extensive. Posteriorly, the uroid is just a stiffened region of cytoplasm. Consumes bacteria. Very similar to Platyamoeba, distinguished usually by the slightly broader aspect. This is V. aberdonica. Phase contrast.
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The uroid is to the lower left, conical pseudopodia extend from the migrating anterior end. Tips of the pseudopodia tend not to include organelles. Phase contrast microscopy.
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Mayorella has characteristic v-shaped pseudopods. The inset in higher magnification shows the nucleus with the central nucleolus (high resolution optics Planapo 40/1,0 oil). The scale bar indicates 50 µm. Sample from sphagnum pond situated in the northern alpine region of Austria near Salzburg. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
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This specimen tried to feed a Closterium cell. But Mayorella was not able to solve the desmid's cell wall and gave up after a while. Sample from sphagnum pond situated in the northern alpine region of Austria near Salzburg. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
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Scale bar indicates 25 µm. Sample from a pond situated in the vicinity of Lake Constance. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA).
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Scale bar indicates 25 µm. Sample from a pond situated in the vicinity of Lake Constance. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA).
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Paramoeba (para-me-ba) one of the naked amoebae. The pseudopodia are conical, but may be short or long. They arise from the hyaline zone. The pseudopodia project to the front, the smooth area at the back of the cell is the uroid. They eat bacteria, algae, detritus. There is a paranuclear body located alongside the nucleus, it is the sqare-ish granular structure above the nucleus with its more homogeneous nucleolus. Differential interference contrast.
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Paramoeba (para-me-ba) one of the naked amoebae. The pseudopodia are conical, but may be short or long. They arise from the hyaline zone. The pseudopodia project to the front, the smooth area at the back of the cell is the uroid. They eat bacteria, algae, detritus. There is a paranuclear body located alongside the nucleus, but not visible here. Phase contrast.
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Paramoeba (para-me-ba) one of the naked amoebae. The pseudopodia are conical, but may be short or long. They arise from the hyaline zone. The pseudopodia project to the front, the smooth area at the back of the cell is the uroid. They eat bacteria, algae, detritus. There is a paranuclear body located alongside the nucleus, it is the granular structure below and to the left of the nucleus with its more homogeneous nucleolus. Differential interference contrast.
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Paramoeba (para-me-ba) one of the naked amoebae. The pseudopodia are conical, but may be short or long. They arise from the hyaline zone. The pseudopodia project to the front, the smooth area at the back of the cell is the uroid. They eat bacteria, algae, detritus. Several cells to show the variation in this species. Phase contrast.
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Paramoeba (para-me-ba) one of the naked amoebae. The pseudopodia are conical, but may be short or long. This is a picture of the rayed form the cell in which the pseudopodia are long. They arise from the hyaline zone. The pseudopodia project to the front, the smooth area at the back of the cell is the uroid. They eat bacteria, algae, detritus. There is a paranuclear body located alongside the nucleus, but not visible here. Phase contrast.
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Korotnevella (caw-rot-know-vell-a) is an amoeba which produces (sometimes) many conical pseudopodia. The most widely encountered genus with conical pseudopodia is Mayorella. This cell contains various food vacuoles with algal particles and other detritus in various stages of digestion. Uroid towards upper left. Phase contrast.
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Korotnevella (caw-rot-know-vell-a) is an amoeba which produces (sometimes) many conical pseudopodia. The most widely encountered genus with conical pseudopodia is Mayorella. This cell contains various food vacuoles with algal particles and other detritus in various stages of digestion. Uroid towards upper left. Phase contrast.
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Korotnevella (caw-rot-know-vell-a) is an amoeba which produces (sometimes) many conical pseudopodia, although this cell has adopted the limax form - indicating how important it is to observe many cells before attempting an identification. Phase contrast.