Microworld

world of amoeboid organisms

Menu
Gocevia sp.
Gocevia sp.
Gocevia spec., 52 and 43 µm, the same specimen

 

Gocevia sp.

Diagnosis: Amoeba more or less spherical in shape, with a central granular hump, partly or completely surrounded by a hyaline margin; surface with a covering of particles, which give the cuticle a light brownish appearance; cuticle is in rest spherical or ovoid; hyaline zone often irregular in outline with conical or digiform subpseudopodia and trailing filaments; cells uninucleate; nucleus with to or three peripheral arranged nucleoli.

Dimensions: covering 60-75 µm, nucleus 9.9 µm.

Ecology: fresh water, in sphagnum pool in Fochterloërveen, the Netherlands. Can easily be overlooked.

Remarks: The main difference with Gocevia obscura is the structure of the nucleus. While G. obscura has a central nucleolus, this species has two or three peripheral arranged ones. The layer of particles forms a flexible protection for the amoeba. This Gocevia was abundantly present in samples from a Sphagnum pool. It was impossible to identify the nature of the particles. They seemed to be the same as those in the covering of Frenzelina reniformis, which was also present in the sample.

Gocevia sp.
Gocevia sp.
Nucleus
Gocevia sp.
Gocevia spec.
Disturbed cells
Gocevia sp.
Gocevia sp.
Gocevia sp., c. 70 µm. Notice the thin trailing filaments (arrows left), and the hyaline veil (arrow right).
Gocevia spec.
Gocevia sp., with two nucleoli visible
Recent posts

Nebela golemanskyi

N. golemanskyi, after Todorov, 2010 Nebela golemanskyi Todorov, 2010 Diagnosis: Shell large, colourless and pyriform, with a distinct short neck about one fourth of the

Read More »

Nebela nebeloides

N. nebeloides, after Gauthier-Lièvre and Thomas, 1958 Nebela nebeloides (Gauthier-Lièvre and Thomas, 1958) Todorov et al., 2010 Basionym: Difflugia nebeloides Gauthier-Lièvre and Thomas, 1958 Diagnosis:

Read More »

Difflugia biwae

D. biwae, after Yang and Shen, 2005 Difflugia biwae Kawamura, 1918 Diagnosis: Shell in lateral view fusiform in outline with a straight neck, a conspicuous

Read More »

Difflugia mulanensis

D. mulanensis, after Yang et al., 2015 Difflugia mulanensis Yang, Meisterfeld, Zhang and Shen, 2015 Diagnosis: Shell elongate ovoid like a vase, with a distinct

Read More »

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 »