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Fig 1: Phaeocystis globosa Line drawing of a. a flagellated cell and b. two cells as found in Phaeocystis colonies
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This image was made from samples taken during a scientific cruise in the Pacific. Water was filtered to concentrate the organisms that were present, then dried onto a thin sheet of plastic and then shadowed with a fine layer of metal to provide contrast. The preparation was then observed with an electron-microscope. This technique has been used to document the diversity of marine microbes, especially, protists in the oceans.
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Rhipidodendron (rip-ee-doe-dend-ron, is a colonial spongomonad flagellate, in which the cells are located at the end of a branching (aborescent) colony. The matrix of the colony is formed from adhering small globules of mucilage. The branches are flat, with several channels in each blade. One cell is located at the end of each channel (many of the cells were dislodged from this preparation). Phase contrast.
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Chrysochromulina (cry-so-crumb-you-line-a) ericina a single-celled haptophyte, with two similar flagella, long anterior haptonema and a golden colour from two yellow-brown chloroplasts. Small scales lie on the surface of the cell but these are not evident in this image. Phase contrast microscopy.
data on this strain.
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Fig 2: Phaeocystis globosa SEM of a flagellated cell showing the flagella and haptonema (H)
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This image was made from samples taken during a scientific cruise in the Pacific. Water was filtered to concentrate the organisms that were present, then dried onto a thin sheet of plastic and then shadowed with a fine layer of metal to provide contrast. The preparation was then observed with an electron-microscope. This technique has been used to document the diversity of marine microbes, especially, protists in the oceans. According to Jeremy Young, this is a fragment of a coccosphere of Umbilicosphaera sibogae.
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Rhipidodendron (rip-ee-doe-dend-ron, is a colonial spongomonad flagellate, in which the cells are located at the end of a branching (aborescent) colony. The matrix of the colony is formed from adhering small globules of mucilage. The branches are flat, with several channels in each blade. One cell is located at the end of each channel (many of the cells were dislodged from this preparation). Phase contrast.
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Fig 3: Phaeocystis globosa SEM of groups of scales
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SEM of coccosphere. Flagellar opening is toward top right. Note considerable variation in coccolith size and wing development
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Rhipidodendron (rip-ee-doe-dend-ron, is a colonial spongomonad flagellate, in which the cells are located at the end of a branching (aborescent) colony. The matrix of the colony is formed from adhering small globules of mucilage. The branches are flat, with several channels in each blade. One cell is located at the end of each channel and the cells have two flagella. Phase contrast.
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Fig 4: Phaeocystis globosa SEM of a flagellated cell showing a star (s)
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Broken coccolith of H. wallichii in distal view, breakage shows the proximal shield.
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Fig 1: Schematic drawing of Prymnesium parvum
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Helicosphaera wallichii (Lohmann 1902) Okada & McIntyre 1977 [Coccolithophora] Like H. carteri but: central-area with oblique twisted slits; bridge typically better developed; and liths perhaps slightly larger. NB Slits obliquity: In distal view the slits are rotated about 10-20° clockwise (and so away from the wing), this is the ânormalâ sense of obliquity in Helicosphaera, as shown by many fossil species. The Pleistocene species H. inversa is similar but shows the opposite sense of obliquity. HOL phase - unknown but H. wallichii often co-occurs with Syracolithus dalmaticus in our samples (Geisen et al., 2004).
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A coccolithophorid from the Ionean Sea. Coccolithophorids are plants and cover their cells with calcium carbonate plates. Lugol's-fixed specimen, DIC optics. In the gallery of Tintinnids, genus Codonellopsis, see a species that uses some of the coccoliths to cover its own shell.
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Fig 2: Prymnesium parvum Lugol's preserved cell showing the two flagella but not the haptonema.
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This tiny prymnesiomonad belongs to group of Coccolithophoraceae. In a mucous cover they wear lots of calcified scales (coccoliths). The depth of focus picture shows coccoliths covering the monad cell. Picture generated from 7 shots using CombineZ by Alan Hadley. For details see ZIP archive. Collected from littoral region (stand of Phragmites) of a rain storage reservoir in Kiel (Schleswig-Holstein, Germany). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
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Fig 3: Prymnesium parvum Formalin preserved cell showing the flagella and haptonema
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Pavlova (pav-low-va) small atypical haptophyte (prymnesiophyte, pavlovophyte) alga, two plastids, two smooth flagella. Differential interference microscopy.
data on this strain.
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Fig 4: Prymnesium parvum SEM of whole cell showing scale plates and one of the flagella
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Pavlova (pav-low-va) small atypical haptophyte (prymnesiophyte, pavlovophyte) alga, two plastids, two smooth flagella. Differential interference microscopy.
data on this strain.
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Fig 5: Prymnesium parvum Live cells in culture
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This image was made from samples taken during a scientific cruise in the Pacific. Water was filtered to concentrate the organisms that were present, then dried onto a thin sheet of plastic and then shadowed with a fine layer of metal to provide contrast. The preparation was then observed with an electron-microscope. This technique has been used to document the diversity of marine microbes, especially, protists in the oceans.