Vannellidae

Platyamoeba spec. Platyamoeba spec. engulfing a filamentous colony of bacteria and showing nucleus with big centric nucleolus in the middle of the cell. Collected from Bodden, the brackish waters lying between the isles of Hiddensee and Ruegen (German Baltic Sea). This image was taken using Zeiss Universal with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Hiddensee Bodden (Germany) Latitude: 54.582633 Longitude: 13.115051 Platyamoeba spec. beim Verschlingen einer filamentösen Bakterienkolonie. Man sieht den großen Kern mit zentrischem Nucleolus in der Zellmitte. Probe aus dem Hiddenseer Bodden, der Brackwasserfläche zwischen den Inseln Hiddensee und Rügen. 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.

Platyamoeba spec. Platyamoeba spec. engulfing a filamentous colony of cyanobacteria and showing nucleus with big centric nucleolus in the middle of the cell. Collected from Bodden, the brackish waters lying between the isles of Hiddensee and Ruegen (German Baltic Sea). This image was taken using Zeiss Universal with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Hiddensee Bodden (Germany) Latitude: 54.582633 Longitude: 13.115051 Platyamoeba spec. beim Verschlingen einer filamentösen Bakterienkolonie. Probe aus dem Hiddenseer Bodden, der Brackwasserfläche zwischen den Inseln Hiddensee und Rügen. 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.

Vannella simplex Scale bar indicates 25 µm. Sample from a pond near Großostheim, Germany. Sampling date 04/2021. 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 near Großostheim (Germany) Latitude: 49.88482168 Longitude: 9.09980822 Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 25 µm. Probe aus einem Waldteich bei Großostheim. Datum der Aufsammlung: 04/2021. 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.

Vannella simplex Scale bar indicates 25 µm. Sample from a pond near Großostheim, Germany. Sampling date 04/2021. 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 near Großostheim (Germany) Latitude: 49.88482168 Longitude: 9.09980822 Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 25 µm. Probe aus einem Waldteich bei Großostheim. Datum der Aufsammlung: 04/2021. 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.

Arboli, Catalonia, Spain

Muelas del Pan, Castille and Leon, Spain

Melgar de Tera, Castille and Leon, Spain

Vannella (van-ell-a), naked free-living amoeba, moves with a single pseudopodium directed forwards (i.e. is unipodial). Hyaline region very extensive. Posteriorly, the uroid is just a stiffened region of cytoplasm. Consumes bacteria. Very similar to Platyamoeba, distinguished usually by the slightly broader aspect. Phase contrast.

Vannella (van-ell-a), naked free-living amoeba, moves with a single pseudopodium directed forwards (i.e. is unipodial). Hyaline region very extensive. Posteriorly, the uroid is just a stiffened region of cytoplasm. Consumes bacteria. Very similar to Platyamoeba, distinguished usually by the slightly broader aspect. Phase contrast.

Vannella (van-ell-a), naked free-living amoeba, moves with a single pseudopodium directed forwards (i.e. is unipodial). Hyaline region very extensive. Posteriorly, the uroid is just a stiffened region of cytoplasm. Contractile vacuole and nucleus evident. Consumes bacteria. Very similar to Platyamoeba, distinguished usually by the slightly broader aspect. Phase contrast.

Vannella (van-ell-a) a fan shaped naked amoeba, made distinctive by the broad anterior margin (right) and extensive hyaline region. Nucleus located to centre bottom of cell, uroid (posterior end) is to the left. Phase contrast. Material from Nymph Creek and Nymph Lake, thermal sites in Yellowstone National Park, photograph by Kathy Sheehan and David Patterson.

Vannella (van-ell-a) naked amoeba, fan shaped, with very broad hyaline zone. Phase contrast micrograph.

Vannella, a small naked amoeba with a large hyaline region. The cell is moving towards the top of the image. The nucleus with central nucleolus is located to the left posterior of the cell, there are clear vacuoles which form part of the contractile vacuole complex. The most posterior part of the cell forms a slightly contracted uroid. From Lake Donghu, China. Phase contrast micrograph.

Series of images showing this amoeba migrating across the slide.

Platyamoeba (platte-ee-a-me-ba) is a naked lobose amoeba which typically advances with a single broad pseudopodium (i.e. is monopodial) - here enclosing two separate bacteria. Phase contrast.

Platyamoeba (platte-ee-a-me-ba) is a naked lobose amoeba which typically advances with a single broad pseudopodium (i.e. is monopodial). Contractile vacuole to the right, and posterior uroid. Phase contrast.

Platyamoeba (platte-ee-a-me-ba) is a naked lobose amoeba which typically advances with a single broad pseudopodium (i.e. is monopodial). Nucleus with nucleolus to the right, contractile vacuole tucked into the posterior uroid. Phase contrast.

Platyamoeba (platte-ee-a-me-ba) is a naked lobose amoeba which typically advances with a single broad pseudopodium (i.e. is monopodial). Group shot with cysts. Phase contrast.

Platyamoeba (platte-ee-a-me-ba) is a naked lobose amoeba which typically advances with a single broad pseudopodium (i.e. is monopodial). Contractile vacuole to the right anterior, and posterior uroid. Phase contrast.

Phase contrast.

Clydonella (clyde-on-ell-a), s small free-living naked amoeba, typically moves with a single progressing pseudopodium . Pseudopodium with relatively large hyaline zone which may have a slightly undulating appearance. Phase contrast micrograph.