world of amoeboid organisms

Menu
Lecythium granulatus
Lecythium granulatus, 100 µm

Lecythium granulatus (Schulze, 1875)

The photomicrographs on this page show several specimens of Lecythium granulatus which all came from one sample. Those cells mainly preyed on several species of diatoms. Cell with large diatoms could be very large. In these cells the nucleus is pushed aside by the diatom (see image below).

Lecythium granulatus
Lecythium granulatus
Dividing cells?
Lecythium granulatus
Lecythium granulatus
The same cell focused at two different heights
Lecythium granulatus
Cell with filopodia network, branching and anastomosing
Lecythium granulatus
Lecythium granulatus
Three specimens after division
Lecythium granulatus
Lecythium granulatus
Lecythium granulatus
Lecythium granulatus
Pseudostome
Lecythium granulatus
Lecythium granulatus
Two specimens, one is trying to engulf a diatom.
Lecythium granulatus
Specimen with kind of shell, though not fully enveloping the cell
Lecythium granulatus
Two plate-like parts of what seems to be a kind of shell
Lecythium granulatus
Lecythium granulatus
Specimen with ingested zoochlorellae, robbed of a crashed Difflugia pyriformis.
Lecythium granulatus
This specimen showed curious behaviour. The fundus opened and a small speudopodium came out of the cell (see arrow). It moved a little and grew longer, after which it was retracted. It shows the possibility of the membrane to make an aperture.
Recent posts

Yogsothoth knorrus

Yogsothoth knorrus, after Shishkin and Zlatogursky, 2018 Yogsothoth knorrus Shishkin and Zlatogursky, 2018 Diagnosis: Individual cells in colony have a diameter of 5.53-13.26 µm; they

Read More »

Yogsothothidae

Yogsothoth carteri, from Shishkin and Zlatogursky, 2018 Yogsothothidae  Shishkin and Zlatogursky, 2018 Diagnosis: Centrohelids covered with two types of tangentially-oriented plate-scales, having a different morphology.

Read More »

Acanthocystis dürrschmidtidae

A. dürrschmidtidae – after Wujek, 2003 Acanthocystis dürrschmidtidae  Wujek, 2003 Diagnosis: Cells 35-40 µm (based on a whole mount). Periplast comprising scales of two types, plate

Read More »

Centroplasthelida

Centroplasthelida Febvre-Chevalier and Febvre, 1984   Diagnosis: Phagotrophic and non-photosynthetic protists with one large spherical or near spherical centrosome at the center of the cell

Read More »

Pterocystida

  Pterocystida Cavalier-Smith and Heyden, 2007 stat. n.   Phylogenetic diagnosis: The least inclusive clade, containing Pterocystis devonica, Raphidiophrys heterophryoidea and Choanocystis curvata, but not Acanthocystis

Read More »

Panacanthocystida

Panacanthocystida Shishkin et Zlatogursky, 2018   Diagnosis: Centrohelids usually covered with siliceous scales or with organic spicules: scale-bearing species with both inner plate-scales and outer

Read More »