world of amoeboid organisms

Menu

Choanocystis ebelii (Wujek et Elsner, 1992) Mikrjukov, 1997

Diagnosis: Periplast is 20–45 µm in diameter with plate-scales and one type of spicules. Spicules are 9.7–14.1 µm long; the shaft is hollow, 0.3–0.6 µm thick at the base and tapers up to 0.2–0.35 µm below an acute apex; the shaft originates from the heart-like base-plate, 2.4–5.6 µm in diameter; the base-plate is surrounded by a marginal rim and is ornamented with 25–60 radial ribs about 0.05 µm wide, which can sometimes branch; small papillae, up to eight, are irregularly located on ribs. Plate-scales are curved, 7.2–8.5 x 1.5–1.8 µm, their medial part is strongly thickened and is ornamented with subparallel ribs.

Ecology: Freshwater, occasionally marine. India (Wujek & Elsner, 1992), marine ice in Antarctica (as Acanthocystis sp., Takahashi, 1981).

Recent posts

Spiculophrys

Genus Spiculophrys Zlatogursky, 2016 Diagnosis: Centrohelids lacking silica scales but with numerous thin, pointed organic (without any traces of silica) scales tapering towards acute apices. 18S

Read More »

Acanthocystis drakena

From Zlatogursky, 2016 Acanthocystis drakena Zlatogursky, 2016 Diagnosis: Cells are 21.1-30.5 µm (ca. 26.7) in diameter. Cell is covered with oval plate-scales having a margin

Read More »

Choanocystis symna

From Zlatogursky, 2014 Choanocystis symna Zlatogursky, 2014 Diagnosis: Cell body ca. 6.7 µm in diameter. Axopodia three–five times longer than a cell diameter. Plate-scales dumbbell-shaped

Read More »

Acanthocystis costata

From Zlatogursky, 2014 Acanthocystis costata Zlatogursky, 2014 Diagnosis: Cell body ca 9.5 µm in diameter. Axopodia 2–3 times longer than cell diameter. Length of spine-scales

Read More »

Kinetocyst

Left: ultra-structure of a kinetocyst of Raphidiophrys contractilis); right: two kinetocysts in an axopodium. Kinetocysts In centrohelid heliozoa, extrusomes are called kinetocysts, and are present

Read More »

Yogsothoth carteri

Yogsothoth carteri, after Shishkin and Zlatogursky, 2018 Yogsothoth carteri Shishkin and Zlatogursky, 2018 Diagnosis: Individual cells in a colony have a diameter of 9.7-15.2 µm;

Read More »