world of amoeboid organisms

Menu
Paramphitrema pontica

 

Paramphitrema pontica Valkanov, 1970

In the publication on the protozoans of the Black Sea Valkanov (1970) described a new genus and species, named Paramphitrema pontica. It was found in the bottom sediments of a firth near Varna at a depth of one to three meters. As a result of the morphological description of the shell, the protoplasm, the pseudopodia and the movement of the animal, Valkanov considered this new species different from all other species of the related genus Amphitrema and created a new genus Paramphitrema. The basic characteristics of P. pontica are the presence of xenosomes on the proteinaceous shell and the existence of two short tubes at the two poles of the shell. The apertures of the shell are at the distal ends of the tubes. According to Valkanov (1970) the freshwater species Amphitrema rhenanum Lauterborn, 1886, and A. lemanense Penard, 1902, whose shells are covered with xenosomes and whose apertures are also disposed at the ends of the brief proteinaceous tubes, must be transferred to the new genus. An important morphological feature of P. pontica is the presence of long distal tubes of the shell with a funnel-like enlargement around the apertures. P. pontica emits only one non-branched pseudopodium that helps the animal.

(Golemansky, 1999)

From Golemansky, 1999
Drawing and record: David G. Seamer, Australia. It could be P. pontica, but it could also be an undescribed species.
Recent posts

Cyclopyxis kahli oblonga

C. kahli f. oblonga , after Tarnogradskii, 1959 Cyclopyxis kahli f. oblonga  (Tarnogradskii, 1959) Centropyxis kahli f. oblonga Tarnogradskii, 1959 Diagnosis:  Test with all the

Read More »

Cyclopyxis leclercqi

Cyclopyxis leclercqi – from Beyens and Chardez, 1986 Cyclopyxis leclercqi Beyens and Chardez, 1986 Diagnosis: Shell circular in apertural view, dorso-ventrally compressed with a swollen

Read More »

Haplomyxa saranae

Haplomyxa saranae Dellinger, 2014 Diagnosis: cell body from small rounded (0.1 mm) to large elongated shape (up to 3.5 x 0.3 mm), usually flat but

Read More »

Haplomyxa spec.

Main cell body Haplomyxa spec. Description: The cell has a central body from which numerous granuloreticulopodia emerge. The cell body can be small or large,

Read More »

Haplomyxa spec.

Haplomyxa spec. These video’s show an undescribed Haplomyxa species which was collected from a mesotrophic freshwater pond in the Netherlands, January 2020, and kept in Petri

Read More »

Chlamydophrys-schaudinn

Fritz Schaudinn (1871 – 1906) was a German zoologist. He was the co-discoverer of the causative agent of syphilis and did research on amoebas, particularly

Read More »