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Ribadelago de Franco, Castille and Leon, Spain
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S Juan, Galicia, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Nuclearia , nucleariid filose amoebae with thin pseduopodia. This is one of the smaller species, either N. moebiusi or N. simplex. There is a large nucleus with a dark spherical nucleolus and to the right is a contractile vacuole. The fine pseudopodia extend from the front of the cell (upper left) and are withdrawn from the back of the cell. From Lake Donghu, China. Phase contrast micrograph.
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Ribadelago de Franco, Castille and Leon, Spain
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Castille and Leon, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Nuclearia , nucleariid filose amoebae with thin pseduopodia. This is one of the smaller species, either N. moebiusi or N. simplex. It has invaded a colony of Microcystis (cyanobacteria) and is eating the bacterial cells and multiplying within the colony. From Lake Donghu, China Phase contrast micrograph.
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Ribadelago de Franco, Castille and Leon, Spain
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Lumbreras, La Rioja, Spain
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Nuclearia, one of the naked filose amoebae, producing thin pseudopodia without internal skeletons. This is one of the larger more rounded species, eats detritus and algae. Phase contrast micrograph.
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Ribadelago de Franco, Castille and Leon, Spain
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Los Cotos, Madrid, Spain
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Nuclearia isolated from sandy sediments from Little Sippiwissett salt marsh. Micrograph taken by Jeffrey Cole.
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Galende, Castille and Leon, Spain
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Nuclearia (new-clee-air-ee-a), a nucleariid (cristi-discoid) filose amoeba. Exclusively with thin pseudopodia without skeletal supports. More of these project from the front of the cell (to the left), whereas they appear a little more crumpled at the posterior end. The structure slightly right and below the centre is the nucleus, with a large nucleolus and the nucleolus having a small empty central region. Eats bacteria, algae, detritus. Differential interference contrast.
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Mahide, Castille and Leon, Spain
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This cell, like many Nuclearia species, has been consuming algae. The nucleus is the clear area with the dark nucleolus in the center. Nucleariid amoebae have thin non-stiff pseudopodia. Phase contrast image.
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Canencia, Madrid, Spain
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Cysts, from a culture. Phase contrast.
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Castille and Leon, Spain
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Live cell, phase contrast. The fine pseudopodia are typical of nuclearid filose amoebae. The surrounding material is mostly comprised of yeast cell walls (the species is provided with yeast as food).
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Mahide, Castille and Leon, Spain
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This specimen was isolated from a sample of material coming out of a sphagnum pond in the so called "Dosenmoor" near Neumuenster (Schleswig-Holstein, Germany). The scale bar indicates 10 µm. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.