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Pachysoeca depressa Ellis, 1930. Lorica closely sessile with broad, slightly concave base, the wall of lorica-body thickened but quite colourless. Neck of lorica has a slight median bulge and appears to arise from a concave diaphragm which forms the top or shoulder of the lorica body. The edge of this concavity is seen, when viewed laterally, as a slightly curved line crossing the lorica. The cell usually completely fills the lorica, including the neck, when extended. Collar, flagellum, and nucleus normal. Height of lorica (including neck): 7.5 microns Length of lorica neck: 4 microns Extreme width of lorica: 7 microns
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Salpingoeca (sal-ping-go-eek-a), a collar flagellate (choanoflagellate) - all of which have a single anterior flagellum surrounded by a collar of very fine pseudopodia (in cross-section the collar seems like two arms, one on either side of the flagellum). The flagellum beats drawing water through the collar and bacteria and other small particles are trapped and then ingested. Believed to be the source group of the sponges and the metazoa. Salpingoeca has an organic lorica. Phase contrast.
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Salpingoeca (sal-ping-go-eek-a), a collar flagellate (choanoflagellate) - all of which have a single anterior flagellum surrounded by a collar of very fine pseudopodia (in cross-section the collar seems like two arms, one on either side of the flagellum). The flagellum beats drawing water through the collar and bacteria and other small particles are trapped and then ingested. Believed to be the source group of the sponges and the metazoa. Salpingoeca has an organic lorica. Phase contrast.
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Salpingoeca, a genus of collar flagellates in which the cell is enclosed within an organic lorica. The cells have a single apical flagellum that is surrounded with a collar of fine pseudopodia that appears as two dark lines, one to either side of the flagellum in this micrograph. Probably feeds on suspended bacteria. From Lake Donghu, China. Phase contrast micrograph.
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Salpingoeca, a genus of collar flagellates in which the cell is enclosed within an organic lorica. The cells have a single apical flagellum that is surrounded with a collar of fine pseudopodia that appears as two dark lines, one to either side of the flagellum and pressed tight against the neck of the lorica. From Lake Donghu, China. Phase contrast micrograph.
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Salpingoeca, a genus of collar flagellates in which the cell is enclosed within an organic lorica. The cells have a single apical flagellum that is surrounded with a collar of fine pseudopodia that appears as two dark lines, one to either side of the flagellum in this micrograph. Feed on suspended bacteria. This species was very common in Lake Donghu, China. Phase contrast micrograph.
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Salpingoeca, a genus of collar flagellates in which the cell is enclosed within an organic lorica. The cells have a single apical flagellum that is surrounded with a collar of fine pseudopodia that can be seen here as an expanding collar. Probably feeds on suspended bacteria. This species was very common in Lake Donghu, China. Phase contrast micrograph.
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Salpingoeca, a colorless choanoflagellate consisting of a cell body (protoplast) within an organic periplast or theca. A distinct collar of microvilli surrounds a single flagellum. Bacteria and debris are directed toward the base of the collar in currents generated by the flagellum. Food particles are engulfed by small pseudopodia from the protoplast just outside the collar of microvilli and then digested in food vacuoles at the posterior of the cell. A contractile vacuole and nucleus are seen anteriorly in this individual. This species is solitary and attaches to the substratum by the posterior fine extension of the theca. From standing fresh water near Boise, Idaho. Oblique illumination.
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Salpingoeca, a colorless choanoflagellate consisting of a cell body (protoplast) within an organic periplast or theca. A distinct collar of microvilli surrounds a single flagellum. Bacteria and debris are directed toward the base of the collar in currents generated by the flagellum. Food particles are engulfed by small pseudopodia from the protoplast just outside the collar of microvilli and then digested in food vacuoles at the posterior of the cell. A contractile vacuole and nucleus are seen anteriorly in this individual. This species with vase-shaped theca. From standing fresh water near Boise, Idaho. Phase contrast.
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Salpingoeca, a colorless choanoflagellate consisting of a cell body (protoplast) within an organic periplast or theca. A distinct collar of microvilli surrounds a single flagellum. Bacteria and debris are directed toward the base of the collar in currents generated by the flagellum. Food particles are engulfed by small pseudopodia from the protoplast just outside the collar of microvilli and then digested in food vacuoles at the posterior of the cell. A contractile vacuole and nucleus are seen anteriorly in this individual. This species with vase-shaped theca. From standing fresh water near Boise, Idaho. Phase contrast.
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Salpingoeca, a colorless choanoflagellate consisting of a cell body (protoplast) within an organic periplast or theca. A distinct collar of microvilli surrounds a single flagellum. Bacteria and debris are directed toward the base of the collar in currents generated by the flagellum. Food particles are engulfed by small pseudopodia from the protoplast just outside the collar of microvilli and then digested in food vacuoles at the posterior of the cell. A contractile vacuole and nucleus are seen anteriorly in this individual. This species has a broad-based theca by which it attaches to the substratum. From standing fresh water near Boise, Idaho. Phase contrast
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From an old putrid sample of freshwater pond near Boise, Idaho. Phase contrast.
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From an old putrid sample of freshwater pond near Boise, Idaho. DIC.
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From an old putrid sample of freshwater pond near Boise, Idaho. DIC.
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From an old putrid sample of freshwater pond near Boise, Idaho. DIC.
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From an old putrid sample of freshwater pond near Boise, Idaho. Phase contrast.
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This image shows bacteria adhering to the outer surface of the chitinous lorica. DIC.
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Specimen collected with a coverslip from sediments of Little Sippewissett Marsh, Massachusetts. Note the single posterior flagellum. Image by David Patterson and Banoo Malik.
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Salpingoeca (sal-ping-go-eek-a) amphoridium James-Clark, 1867. Cell is about 6 - 7 microns and is located in a lorica about 10 microns long. The lorica has a neck, which is everted at the anterior end. The cell may be retracted in the lorica. One flagellum emerges at the anterior end of the cell and is about the length of the cell. The lorica may attach to the substrate by a short pedicel or the posterior end of the lorica. Rarely observed.
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Salpingoeca amphoridium James-Clark, 1867. Cell is about 6 - 7 microns and is located in a lorica about 10 microns long. The lorica has a neck, which is everted at the anterior end. The cell may be retracted into the lorica. One flagellum emerges at the anterior end of the cell and is about the length of the cell. The lorica may attach to the substrate by a short pedicel or the posterior end of the lorica.
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Salpingoeca amphoridium australica Playfair, 1921. Cells (or lorica) are about 8-10 microns long and 4-6 microns wide. The cells ovate, rounded below, narrowed above, sides converging to the narrow mouth, only very slightly constricted.
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Salpingoeca infusionum Kent, 1880. Cells 2.5-5 x 4-6.5 microns, lorica chamber 4.5-5 x 9.5-12.5 microns, lorica stalk 11.5-27 _m, flagellum 12-43.5 microns, pseudopodial collar 9-13 microns, cyst 3,5-4.5 x 4.5-6.5 microns, swarmer cells 2-3 x 4.5-5 microns The theca is relatively thick, and therefore more readily distinguished with light microscopy than in some other members of this genus. It has an ovate chamber which tapers posteriorly. The pedicel is generally 1.5-2 times the length of the theca, and is attached to the substratum by a number of fibres. The theca surface appears amorphous in electron microscope whole mounts. The length of the flagellum varies but is often very long (5-7 times the length of the cell).
