Peniculid

Right dorsolateral surface view of the hymenostome ciliate, Frontonia angusta (Kahl, 1931). Very similar in overall apppearance to F. acuminata (Ehrenberg,1833)Buetschli,1889. F. angusta lacks the anterior apical collection of pigmented granules seen in F. acuminata and its contractile vacuole has 3-4 excretory pores (4 in this case).The approximately 6 µm long extrusomes are clearly visible. Ingested diatoms and green algae are present. Collected from a freshwater pond near Boise, Idaho.DIC.

Optical section of the marine frontoniid ciliate, Schistophrya aplanata (Kahl,1933). Schistophrya is a monotypic genus. The cell outline is elongate and bluntly rounded anteriorly and posteriorly. The somatic ciliature is uniform. The pellicle is areolate (marked by uniform rectangular depressions). The slit-like oral aperture is located in mid-body and is bordered by thin slightly serrate lips (not seen in this image). The cytopharyngeal basket of fine trichites is not seen well in these images. A single contractile vacuole is located in the anterior half of the cell. There is a single ovoid macronucleus. A large aggregate of refractile dark granules is present at the anterior end. Fusiform subcortical extrusomes are present (seen in this image). S. aplanata is similar in appearance to the freshwater frontoniid ciliate, Clathrostoma viminale. Collected from a commercial saltwater aquarium in Boise, Idaho February 2004. DIC optics.

Phase contrast micrograph showing clearly one contractile vacuole with five filled channels.

Lembadion (lem-bad-ee-on) is a freshwater planktonic ciliate. It has a large scoop to one side of the body, moves through the water in a rotating motion. In this action it scoops up small planktonic algae - its food. Phase contrast.

Paramecium (aurelia) (par-a-mee-see-um) is a very familiar genus of ciliates. They eat bacteria and have the mouth recessed in a buccal cavity, and the cell is often shaped with a scoop leading to the mouth. There are cilia all over the body with a caudal tuft of longer cilia at the back of the body. Usually with a layer of extrusomes (trichocysts) under the cell surface and a large oval macronucleus. Contractile vacuoles star-shaped. This species is P. aurelia, one of the smaller spindle-shaped (morpho)species. The (morpho) species is best distinguished by the presence of two small micronuclei pressed up against the macronucleus. Phase contrast.

[taxonomy:genus=Disematostoma] Date: 7 Sep 2011, originally collected 6 Sep 2011 Location: Freshwater stream flowing out of MacRitchie Reservoir, close to Venus Drive entrance. On field trip with NUS freshwater biology class. Stream was brown with sandy bottom, water mostly clear. Microscope: Bright-field with closed condenser aperture. Camera: Nikon D7000 Collector: Brandon Seah Scale: 20830 pixels/mm = 20.8 pixels/µm (40x)

Paramecium aurelia and its Parasites.

Mahide, Castilla y Len, Espaa

Campillos, Andalusia, Spain

Castille and Leon, Spain

Matute, La Rioja, Spain

Rumoroso, Cantabria, Espaa

Herrera de Soria, Castille and Leon, Spain

Canencia, Madrid, Spain

Peniscola, Valencia, Spain

Franceses, Canary Islands, Spain

Cabanas De Sayago, Castille and Leon, Spain

Rumoroso, Cantabria, Espaa

Caada del Hoyo, Castilla-La Mancha, Espaa

Villar del Pedroso, Extremadura, Espaa

Frontonia leucas Scale bar indicates 100 µm. Sample from Domänental pond near Kronshagen (Kiel, Germany). The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioplan with Olympus OM-D M5 MKII.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Pond Domänental near Kronshagen (Kiel, Germany) Latitude: 54,33211 Longitude: 10,060821 Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 100 µm. Probe aus dem Domänental-Teich bei Kronshagen. Mikrotechnik: Zeiss Axioplan Kamera: Olympus OM-D M5 MKII. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Urocentrum spec. The specimen was gathered in the pond Birkensee near Rödelsee (Lower Franconia, Germany). Sampling date 7/2018.Copyright Dr. Rainer Meisch, Würzburg, Germany.Images were taken using Zeiss Axioplan with Canon DSLR Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Pond Birkensee near Rödelsee (Lower Franconia, Germany) Latitude: 49,71819841 Longitude: 10,27807474 Probe aus dem Birkensee bei Rödelsee (Unterfranken). Datum der Aufsammlung: 7/2018. Copyright Dr. Rainer Meisch, Würzburg. Mikrotechnik: Zeiss Axioplan, Kamera: Canon DSLR. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Paramecium bursaria Ventral view of Paramecium bursaria. Sample from sphagnum pond situated in the northern alpine region of Austria near Salzburg. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Wetland near Schladming (Austria) Latitude: 47,37386 Longitude: 13,823016 Ventralansicht von Paramecium bursaria. Probe aus einem Moor in den nördlichen Kalkalpen von Österreich in der Nähe von Salzburg. Mikrotechnik: Zeiss Universal, Kamera: Olympus C7070. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Ventral infraciliature of the hymenostome ciliate, Frontonia angusta (Kahl, 1931). Very similar in overall apppearance to F. acuminata (Ehrenberg,1833)Buetschli,1889. F. angusta lacks the anterior apical collection of pigmented granules seen in F. acuminata and its contractile vacuole has 3-4 excretory pores (not visible here).The prominent preoral and postoral sutures are visible. The 3 curved adoral membranelles are seen on the viewer's right of the oral apparatus. The vestibular ciliary rows are seen to the viewer's left of the the oral apparatus.The postoral ciliary field is seen abutting the posterior margin of the peristome to the viewer's right of the postoral suture.Stained by the silver carbonate technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Collected from a freshwater pond near Boise, Idaho.Brightfield.