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This pennate diatom was found in a plankton tow from Nantucket Sound off Martha's Vineyard - Massachusetts, USA. Image by Jeffrey Cole and Micah Dunthorn.
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Originally described by Schewiakoff under the name Didinium balbianii. An individual with weakly projecting mouth cone, traveling backwards. a--Anus cv--Contractile vacuole ek--Ectoplasm N--Macronucleus ncl--Micronucleus o--Mouth st--Cytopharyngeal basket W--Ciliated ring z -- Zoochlorellae
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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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Trachelostyla (track-ell-owe-style-a), a hypotrich ciliate. With a narrowed anterior end to the body, with an adoral zone of membranelles. Phase contrast micrograph.
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Ventral view (in vivo) of Gastronauta derouxi (FOISSNER & BLATTERER, 1992). OA=oral large transverse oral aperture. RCF=right ventral somatic ciliary field. LCF= left ventral somatic ciliary field. PK=preoral kineties. VKF=vertical kinety fragments.IK-RCF=anteriorly curved innermost kinety of right ciliary field. *= unciliated postoral area between right and left somatic ciliary fields.Collected from an ephemeral puddle on a grass lawn in Boise, Idaho. July 2007.DIC
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Right lateral view of the silverline system of the hymenostome ciliate Colpidium kleini (Foissner, 1969). C. kleini is very similar in overall appearance to C. colpoda although usually more slender and with fewer somatic kineties. The cytostome is in the anterior 1/4 of the cell. There is a curved paraoral membrane along the convex right margin of the cytostome. The left margin is slightly concave. There are three adoral membranelles. There are 32 to 44 somatic kineties. The kineties to the right and left of the oral aperture meet at a curved preoral suture.The right somatic kineties bend leftward at the level of the cytostome. There is an anterior apical area bare of cilia. There are rows of inconspicuous mucocysts between the somatic kineties. The ellipsoid macronucleus and adjacent micronucleus are centrally located. The single contractile vacuole is located in the midbody with a single excretory pore on the right surface. The feature most clearly distinguishing Colpidium kleini from C. coploda is the silverline system. In C. kleini there is only one secondary meridian (silverline) between two primary meridians (primary meridians correspond to somatic kineties). In some cases short segments of the secondary meridians may be duplicated. Short transverse L or T-shaped branches arise from both primary and secondary meridians at irregular intervals.Stained by the dry silver nitrate technic (see Foissner, W.Europ. J. Protistol.27,313-330;1991). Collected from an organically enriched freshwater pond near Boise, Idaho. Brightfield. Black and white.
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Ventral infraciliature of the oxytrichid,Gonostomum strenuum (ENGELMANN, 1862) STERKI, 1878. G. strenuum differs from G. affine by the greater number of frontoterminal (4-6 vs 2) and frontoventral cirri. In G. strenuum the last frontoventral cirrus is just posterior to the peristome (yellow arrowhead).Collected from a non-flooded Petri dish culture of soil from a park lawn in Boise, Idaho. January 2007.Stained by the protargol technique [Wilbert modification] (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.
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A species of the marine hypotrich genus, Diophrys (DUJARDIN,1840). The genus contains many species. Collected from a commercial marine aquarium in Boise, Idaho. DIC.
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Euplotes (you-p-low-tees) is a hypotrich ciliate. The hypotrichs form part of the spirotrichs, and most have a large adoral zone of membranelles curving around the front of the cells and terminating at the cytostome on the ventral surface. They are called hypotrichs because the cilia that are used for locomotion are located mostly on the ventral side of the cilia. The cilia are clustered into aggregates called cirri. Euplotids feed on suspended particles such as bacteria and algae. Common. Differential interference contrast.
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Hoyo de Manzanares, Madrid, Spain
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Madrid, Spain
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Mahide, Castille and Leon, Spain
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Pera, Faro, Portugal
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Galende, Castille and Leon, Spain
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Madrid, Madrid, Spain
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Gravalos, La Rioja, Spain
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Vitoria, Basque Country, Spain
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Arbol, Catalunya, Espaa
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Fig1a : Favella ehrenbergii Line drawing of lorica morphology after Marshall, 1969;
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Originally described by Schewiakoff under the name Didinium balbianii. Shown traveling forward, with mouth cone extended. a--Anus cv--contractile vacuole ek--Ectoplasm N--Macronucleus nk--Food particle o--Mouth st--Cytopharyngeal basket W--Ciliated ring
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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.