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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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Arboli, Catalonia, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Melgar de Tera, Castille and Leon, Spain
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Casas de la Dehesilla, Madrid, Spain
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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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Muelas del Pan, Castille and Leon, Spain
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Ribadelago de Franco, Castilla y Len, Espaa
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Casas de la Dehesilla, Madrid, Spain
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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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Ribadelago de Franco, Castille and Leon, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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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).