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Glissandra innuerende Patterson and Simpson, 1996. Gliding protist with almost spherical body measuring 5 - 8 microns in diameter, with two flagella, inserting laterally, side by side and subapically into a small ventral groove. The groove extends to the front margin of the cell being occasionally evident as a slight discontinuity. Flagella about equal in length and about 2.5 times body length. Both flagella lie against the substrate in gliding cells, with one directed anteriorly and the other posteriorly. Only the tip of the anterior flagellum moves back and forward during gliding, with the remainder of the flagellum pointing stiffly in the direction of motion (similar to behaviour of the flagellum during gliding in the euglenid genus Petalomonas). Cytoplasm often filled with small granules.
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Collodictyon, flagellate with 4 flagella, an irregular outline and ventral groove. Consumes algae and other small particles in the phytoplankton. This form has also been reported under the name Polytomella. From freshwater pond near Boise, Idaho. Phase contrast.
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Sulcomonas Brugerolle, 2006, free-living heterotrophic small flagellate (10 µm) with two sub-apical flagella and a ventral groove extending across the whole cell length and used to phagocytose bacteria; collodictyonid relationships. Phase contrast.
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Collodictyon, flagellate with 4 flagella, an irregular outline and ventral groove. Consumes algae and other small particles in the phytoplankton. This form has also been reported under the name Polytomella. From freshwater pond near Boise, Idaho. Phase contrast.
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Sulcomonas Brugerolle, 2006, free-living heterotrophic small flagellate (10 µm) with two sub-apical flagella and a ventral groove extending across the whole cell length and used to phagocytose bacteria; collodictyonid relationships. Drawing.
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Portrait of Collodictyon, a free-living heterotrophic flagellate of uncertain affinity. The cell has a ventral groove, flanked posteriorly by two rounded projections. There are four flagella about one and a half times the cell length . Collodictyon is a voracious feeder. The cell ingests other protists via the central groove. T A relationship to the biflagellate Diphyelleia has been suggested based on EM studies of the flagellar apparatus, dictyosomes and mitochondrial structure (Brugerolle, G. et al. Protist 153:59-70, 2002). From a temporary polysaprobic freshwater farm pond near Boise, Idaho. Differential interference contrast.
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Portrait of Collodictyon, a free-living heterotrophic flagellate of uncertain affinity. The cell has a ventral groove, flanked posteriorly by two rounded projections. There are four flagella about one and a half times the cell length. The anterior nucleus with its prominent nucleolus is seen near the flagellar insertion. Numerous food vacuoles occupy the cytoplasm. Collodictyon is a voracious feeder. The cell ingests other protists via the central groove. A relationship to the biflagellate Dphyelleia has been suggested based on EM studies of the flagellar apparatus, dictyosomes and mitochondrial structure (Brugerolle, G. et al. Protist 153:59-70, 2002). From a temporary polysaprobic freshwater farm pond near Boise, Idaho. Differential interference contrast.
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Portrait of Collodictyon, a free-living heterotrophic flagellate of uncertain affinity. The cell has a ventral groove, flanked posteriorly by two rounded projections. There are four flagella about one and a half times the cell length. Collodictyon is a voracious feeder. The cell ingests other protists via the central groove. This cell has been grossly distorted by ingestion of the diatom, Actinella. A relationship to the biflagellate Diphyelleia has been suggested based on EM studies of the flagellar apparatus, dictyosomes and mitochondrial structure (Brugerolle, G. et al. Protist 153:59-70, 2002). From a temporary polysaprobic freshwater farm pond near Boise, Idaho. Differential interference contrast.
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Diphylleia rotans Massart, 1920. Swimming flagellate, about 23 microns with two long apical and equal flagella inserting near the anterior end at the top of a ventral groove formed by the curving lateral margins of the cell. Phagotrophic.
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Diphylleia rotans (syn Aulacomonas submarina Skuja,1939) is a small flagellate of about 25 µm in length, with two apically inserted long flagella. Cell body with an anterior nucleus and a ventral groove and two posterior points. Freshwater free-living heterotrophic species that phagocytoses preys such as bacteria through the ventral groove. Two anterior flagella and a posterior indentation (phase contrast micrograph).
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Scanning EM showing the ventral groove and the two long anterior flagella.
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Scanning EM showing the ventral groove