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Aka Heterophrys fockii. Scale bar indicates 25 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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Chlamydaster (Clam-ee-das-ter), a centrohelid heliozoon in which the body is surrounded by a layer of mucus and it may have bacteria or other small particles adhering to the outside. With fine arms, not tapering. Phase contrast.
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Chlamydaster, centrohelid heliozoon in which the cell body is surrounded by a layer of mucus. Pseudopodia with internal microtubular supports and with prominent extrusomes (kinetocysts). Not common.
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Portrait of the heterophrid centroheliozoan, Chlamydaster sterni (Rainer, 1968). The external surface of the cell is coated by a thick homogeneous coat of mucous without siliceous elements. Bacteria and debris sometimes adhere to the mucous coat. The axopodia protrude through the mucous. The axopodia bear extrusomes (not seen here). There is a single contractile vacuole. The other species in this genus, C. laciniatus (Penard, 1904) is distinguished by its fimbriated mucous coat. C. sterni is planktonic in both freshwater and marine habitats. Collected from a commercial saltwater aquarium in Boise, Idaho November 2004. Phase contrast.
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Portrait of the heterophrid centroheliozoan, Chlamydaster sterni (Rainer, 1968). The external surface of the cell is coated by a thick homogeneous coat of mucous without siliceous elements. Bacteria and debris can be seen here adhering to the mucous coat. The axopodia protrude through the mucous. Extrusomes appear here as small beads along some of the axopodia. The contractile vacuole is seen at 9 oâclock. Several large cytoplasmic food vacuoles are visible and a small particle of food at 2 oâclock is about to be ingested. The other species in this genus, C. laciniatus (Penard, 1904) is distinguished by its fimbriated mucous coat. C. sterni is planktonic in both freshwater and marine habitats. Collected from a commercial saltwater aquarium in Boise, Idaho. DIC.
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Heterophrys (het-err-off-riss) is a centrohelid heliozoon - the most speciose group of heliozoa. The heliozoa do not form a natural (monophyletic and holophyletic) group of protists, but a type of organization that have been arrived at from a number of different evolutionary lineages. Heterophrys is apparently naked, careful scrutiny usually reveals delicate radiating (organic) spicules. the arms terminate on a non-nuclear organizing centre (the dark dot in this cell). Heliozoa are predators, motile prey is captured after swimming into the arms. This cell seems to have been eating algae. Differential interference contrast.
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Heterophrys (het-err-off-riss) is a centrohelid heliozoon - the most speciose group of heliozoa. The heliozoa do not form a natural (monophyletic and holophyletic) group of protists, but a type of organization that have been arrived at from a number of different evolutionary lineages. Heterophrys is apparently naked, careful scrutiny usually reveals delicate radiating (organic) spicules. the arms terminate on a non-nuclear organizing centre (the dark dot in this cell. Heliozoa are predators, motile prey is captured after swimming into the arms. This cell seems to have been eating algae. Phase contrast.
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Heterophrys (het-err-off-riss) is a centrohelid heliozoon - the most speciose group of heliozoa. Heterophrys is apparently naked, careful scrutiny usually reveals delicate radiating (organic) spicules. the arms terminate on a non-nuclear organizing centre (the dark dot in this cell. Heliozoa are predators, motile prey is captured after swimming into the arms - as can be seen here. Phase contrast.
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Heterophrys (het-err-off-riss) is a centrohelid heliozoon, distinguished by having radially arrayed organic spicules arising from the surface of the cell. The longer rays with granules are the arms - pseudopodial extensions supported by microtubules. The arms are used to capture food. Phase contrast. Material from Nymph Creek and Nymph Lake, thermal sites within Yellowstone National Park, photograph by Kathy Sheehan and David Patterson.
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Portrait of heterophrys, a small heliozoon coated in very thin organic spines. This thin axopodia contain prominent spherical extrusomes are fully extended in this image. Axopodia contract when the organism is disturbed, bunching extrusomes at the cell surface as seen in the other image. Usually described as a marine genus, these individuals were collected from an organically enriched standing freshwater pond near Boise, Idaho. Phase contrast
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Portrait of Heterophrys, a centroheliozo0n with fine radial organic spicules passing through a mucus coat. Axopodia bearing extrusomes are seen in this image. Some species contain endosymbiotic algae. From freshwater pond near Boise, Idaho. Phase contrast.
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Portrait of Heterophrys, a centroheliozoan with fine radial organic spicules passing through a mucous coat. Axopodia bearing extrusomes are seen in this image. Some species contain endosymbiotic algae. From freshwater pond near Boise, Idaho. Phase contrast.
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Phase contrast image of living cell, thin arms used for food capture.
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Sphaerastrum fockii Synonym: Heterophrys fockii.Scale bar indicates 25 µm. 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.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Wetland near Schladming (Austria) Latitude: 47.37386 Longitude: 13.823016 Synonym: Heterophrys fockii.Der Messbalken markiert eine Länge von 50 µm. Probe aus einer Wiesenvernässung nahe Schladming/Österreich. Mikrotechnik: Zeiss Universal, Kamera: Olympus C7070. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.