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Cell colony with daugther colonies. 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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Young colonies, cell divisions are almost over, the flagellae are not yet fully formed. Scale bar indicates 25 m.Sample from the Lake Constance (vicinity of Bodman). 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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Madrid, Madrid, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Lateral view of Gonium pectorale (Muller), a common colonial volvocid flagellate. Colonies usually consist of 16 biflagellate 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. Collected from a freshwater pond near Boise, Idaho. Brightfield
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In vivo surface view 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. DIC.
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Scale bar indicates 100 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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Boone, North Carolina, United States
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Casas de Fadoncino, Castille and Leon, Spain
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Santa Coloma, La Rioja, Spain
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San Martin De Castaneda, Castille and Leon, Spain
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Anterior apical view of Gonium pectorale (Muller), a common colonial volvocid flagellate. Colonies usually consist of 16 biflagellate cells (twelve peripheral and four central) in a plate-like arrangement of one layer. An extracellular matrix (not easily seen without phase or differential intereference contrast techniques) connects cells. Cells have a cup-shaped chloroplast with a small anterior stigma. Collected from a freshwater pond near Boise, Idaho. DIC.
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Melgar de Tera, Castille and Leon, Spain
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Rabano De Aliste, Castille and Leon, Spain
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Galende, Castille and Leon, Spain
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DOF image shows the layers of the mucilaginous sheath, several flagellae and stigmae of two cells. Scale bar indicates 25 m.Sample from a small wetland near Schladming (northern alpine region of Austria near Salzburg). 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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Scale bar indicates 50 m.Sample from a pond on the isle of Hiddensee (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.For permission to use of (high-resolution) images please contact postmaster@protisten.de.
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Anterior apical view of Gonium pectorale (Muller), a common colonial volvocid flagellate. Colonies usually consist of 16 biflagellate 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. Collected from a freshwater pond near Boise, Idaho. DIC.
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Melgar de Tera, Castilla y Len, Espaa
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An association of Volvox microgametes (spermatozoids). Scale bar indicates 25 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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This alga consists of a coenobium. The peripheral cells have two flagella, which point out radially from the centre of the coenobium.
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Cells producing daughter colonies. Scale bar indicates 50 m.The specimen was gathered in the wetlands of Nationalpark Unteres Odertal ( 100 km north east of Berlin). 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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Ribadelago de Franco, Castille and Leon, Spain