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In vivo portrait of the volvocid flagellate, Volvulina steinii Playfair,1915. Collected from a temporary rainwater puddle on a grass lawn in Boise, Idaho 43°36'49.03" N 116° 13' 23.77" W elev. 2674 ft.March 2006.Brightfield.
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Melgar de Tera, Castille and Leon, Spain
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Closeup of a zygote. Mucilaginous sheath is visible. Scale bar indicates 50 m. Sample from ponds 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.For permission to use of (high-resolution) images please contact postmaster@protisten.de.
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Casas de Fadoncino, Castille and Leon, Spain
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Canada Del Hoyo, Castille la Mancha, Spain
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Is a Genus of green algae composed of 8, 16 or sometimes 32 cells held together at their bases to form a sack globular colony surrounded by mucilage.
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San Martin De Castaneda, Castille and Leon, Spain
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Los Cotos, Comunidad de Madrid, Espaa
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Santa Coloma, La Rioja, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Gonium pectorale, a common colonial volvocid flagellate. Colonies usually consist of 16 cells (twelve peripheral and four central) in a plate-like arrangement of one layer. An extracellular matrix that is not easily seen connects cells. Cells have a cup-shaped chloroplast with a small anterior stigma. Lateral view of colony. From freshwater pond near Boise, Idaho. Phase contrast.
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Portartit of the volvocid flagellate, Volvulina steinii Playfair,1915. The cells are hemispherical with the flattened face of each toward the exterior in contact with the thin investing gelatinous envelope.The inner limit of the envelope is visible here. the thickness of the investing layer of the gelatinous envelope is indicated here by debris adhering to its exterior surface.Each of the 16 cells in the colony bears two equal-length flagella (seen here in the cell at 12 o'clock). Only cells at the "anterior" end of the colony have eyespots. each cell has two contractile vacuoles (seen here in the cell at 12 o'clock.Collected from a temporary rainwater puddle on a grass lawn in Boise, Idaho In vivo portrait of the volvocid flagellate, 43°36'49.03" N 116° 13' 23.77" W elev. 2674 ft. elev. 2674 ft. March 2006. DIC.
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Scale bar indicates 25 m. Sample from the Domnental pond of Kronshagen near Kiel. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioplan with Olympus OM-D-E-M5 MKII.For permission to use of (high-resolution) images please contact postmaster@protisten.de.
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Disintegrated parent colony with zygotes. Scale bar indicates 100 m. Sample from ponds 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.For permission to use of (high-resolution) images please contact postmaster@protisten.de.
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O Grove, Galicia, Spain
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Canada Del Hoyo, Castille la Mancha, Spain
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Galende, Castille and Leon, Spain
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Mahide, Castille and Leon, Spain
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Los Cotos, Madrid, Spain
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Gonium pectorale, a common colonial volvocid flagellate. Colonies usually consist of 16 cells (twelve peripheral and four central) in a plate-like arrangement of one layer. An extracellular matrix that is not easily seen connects cells. Cells have a cup-shaped chloroplast with a small anterior stigma. Anteroposterior view of colony. From freshwater pond near Boise, Idaho. Brightfield illumination.
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In vivo portartit of slightly compressed volvocid flagellate, Volvulina steinii Playfair,1915 showing the two contractile vacuoles. The single nucleus of several cells is visible. Only the "anterior" cells of the colony have red eyespots. Collected from a temporary rainwater puddle on a grass lawn in Boise, Idaho. 43°36'49.03" N 116° 13' 23.77" W elev. 2674 ft. March 2006. DIC.
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Melgar de Tera, Castille and Leon, Spain