Microworld

world of amoeboid organisms

Menu
Leptomyxa arborea
from Smirnov et al., 2016

Leptomyxa arborea  Berney, Geisen et Burberg, 2016

Diagnosis: Flattened, expanded highly branched and reticulate cells, 50- >1000 µm across. Multinucleate, nuclei of vesicular type.

Ultrastructure: SSU rDNA sequence of the type strain (isolated from UK) contains signatures TCT GGA CCT TCT TTG AGG starting from position 180; GGC CCA AAA GGC starting from position 224 and AGA TGA ATA TTC TAT starting from position 1388.

Differential diagnosis: Resembles  L. reticulata in size and general appearance, but usually is more ramose and expanded than the latter species. In locomotion it is usually more “tree-like” than L. recticulata, strongly branching in anterior part with usually one single posterior end. However these two species are very similar; the only ultimate differentiating character is the SSU sequence.

Ecology: Type location: Grass roots from a meadow outside the Biocenter at the University of Cologne, Germany.

Leptomyxa arborea
from Smirnov et al., 2016
Recent posts

Euglypha bryophila

Euglypha bryophila, after Brown, 1911 (L), from Ecuador (R) Euglypha bryophila  Brown, 1911 Diagnosis: (Original description) The test is very regular in form and subject

Read More »

Vernalophrys

(A) A Scenedesmus cell (arrow) is engulfed by a trophozoite. (B) Several Scenedesmus cells adhere to the surface of a plasmodium that has numerous vacuoles

Read More »

Actinosphaeridium spec.

Actinosphaeridium spec. Diagnosis: Cell surrounded by a membranous shell, with an outer mucous layer. Filopodia with granules, sometimes branching. Cell stalked. Ecology: I found this

Read More »

Euglyphidion

Euglyphidion enigmaticum – after Bonnet, 1960 Genus Euglyphidion Bonnet, 196 Diagnosis: Shell hyaline, ovoid, pseudostome circular or slightly elliptical. Shell loosely covered with two types of

Read More »

Leptomyxa spec.

Leptomyxa sp., slowly retracting in response to the light of the microscope Leptomyxa sp. Diagnose: This is a very large amoeba which I found in

Read More »

Zivkovicia spec.

Zivkovicia spec., 200 µm long; the right image is viewed through the aperture Zivkovicia spec.  Diagnosis: Shell pyriform, circular in oral view, with a clear

Read More »