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in vivo view of the amphisiellid hypotrich Pseudouroleptus caudatus (HEMBERGER,1985) showing colorless cortical granules (CG).Specimen from rewetted soil sample from grass lawn of a public park in Boise,Idaho.January 2007.DIC.
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in vivo view of the amphisiellid hypotrich Pseudouroleptus caudatus (HEMBERGER,1985) .Specimen from rewetted soil sample from grass lawn of a public park in Boise,Idaho.January 2007.Brightfield.
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Pseudouroleptus caudatus Hemberger,1985. FC=frontal cirri.BC=buccal cirrus. PPC=postperistomial cirrus. RMR,LMR=right and left marginal cirral rows.ACR=amphisiellid median cirral row. TC=transverse cirral row.Specimen from rewetted soil sample from grass lawn of a public park in Boise,Idaho.January 2007.Protargol impregnation,Wilbert modification (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.
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Dorsal infraciliature of Pseudouroleptus caudatus (HEMBERGER,1985) .RMR,LMR right and left marginal cirral rows.ACR=amphisiellid median cirral row. 1-4+dorsal kineties.Specimen from rewetted soil sample from grass lawn of a public park in Boise,Idaho.January 2007.Protargol impregnation,Wilbert modification (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.
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Ventral infraciliature of Pseudouroleptus caudatus (HEMBERGER,1985) .RMR,LMR right and left marginal cirral rows.TC=transverse cirral row.ACR=amphisiellid median cirral row.MN=two macronuclear nodules.Mi=multiple (up to eight) dense micronuclei.Specimen from rewetted soil sample from grass lawn of a public park in Boise,Idaho.January 2007.Protargol impregnation,Wilbert modification (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.
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in vivo portrait (ventral view) of the large hypotrich ciliate, Urostyla grandis (EHRENBERG,1830). Collected from a freshwater canal near Boise, Idaho.Brightfield.
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Ventral infraciliature of the large hypotrich ciliate, Urostyla grandis (EHRENBERG,1830). Collected from a freshwater canal near Boise, Idaho.Stained by the protargol A technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.
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Dorsal infraciliature of the large hypotrich ciliate, Urostyla grandis (EHRENBERG,1830). Collected from a freshwater canal near Boise, Idaho.Stained by the protargol A technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.
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Ventral infraciliature of the large hypotrich ciliate, Urostyla grandis (EHRENBERG,1830). A file of buccal cirri parallels the undulating membrane (UM).Em=endoral membrane.AZM=adoral zone of membranelles.There is a zig-zag file of midventral cirri (MVC) between the right and left marginal cirral rows. There is an obliquely oriented row of about 12 transverse cirri (TC).Collected from a freshwater canal near Boise, Idaho.Stained by the protargol A technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.
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Resting cyst of Urostyla grandis (EHRENBERG,1830). Brightfield.
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Ruptured resting cyst of Urostyla grandis (EHRENBERG,1830) showing very thin cyst wall (CW). DIC.
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Resting cysts of Urostyla grandis (EHRENBERG,1830). From starved culture.Brightfield.
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Multiple macronuclei (MN) of the large hypotrich ciliate, Urostyla grandis (EHRENBERG,1830). Collected from a freshwater canal near Boise, Idaho.Stained by the protargol A technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.
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Holosticha (whole-o-stike-a) (tentative identification) is a hypotrich ciliate in which the cirri are distributed in rows on the ventral surface. It is one of a large number of stichotrichine genera, and the genera can only be properly distinguished by careful mapping of the the distribution of the cirri - an exercise which requires special preparation of the cell. Differential interference contrast.
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Holosticha (whole-o-stike-a) (tentative identification) is a hypotrich ciliate in which the cirri are distributed in rows on the ventral surface. It is one of a large number of stichotrichine genera, and the genera can only be properly distinguished by careful mapping of the the distribution of the cirri - an exercise which requires special preparation of the cell. This species with endosymbiotic algae. Phase contrast.
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These ciliates are undergoing conjugation, sexual exchange of genetic material.
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Image of ventral surface showing the anterior (to the right) zone of membranelles, and cirri around more or less the entire circumference of the cell. Phase contrast image.
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The identity of this organism is unconfirmed. This image is focussed just below the ventral surface. There seem to be 2 rows of marginal cirri - a distinguished feature for Holosticha, and there is a collection of transverse cirri at the back. The inner region of the Adoral Zone of Membranelles that arcs around the front of the cell is quite evident - but is larger than is usual for the genus Holosticha. The relationships between Holosticha and close relatives are subject to debate. Nomarski optics.
