Trematosoma rotunda   (Allgen)  1952 (Ciliata)
Organism information awaits expert curation
Class: Phyllopharyngea

Image copyrights: Protistology

Size: Lorica length 7-14 μm, lorica width 6-14 μm, body length 15-22 μm, body thickness 8 μm, stalk length 4-16 μm (7.14-16.32 μm), stalk thickness 1.51-2.04 μm, length of tentacles 3-9 μm, macronucleus diameter 6-8 μm.

Cell body short, rounded, laterally flattened, entirely fills up the lorica and clamped to their aperture border. Lorica delicate, gently striated. Tentacles clavate, short, arranged at the upper body surface as a row in two groups. Macronucleus spherical or oval, centrally located. Stalk short, thin, slightly ribbed.

Reproduction by endogemmic budding.

Host: Pseudochromadora sp. (nematode)

Synonym (s)
Acineta rotunda Allgen 1952
Nematacineta rotunda (Allgen) 1952
Conchacineta rotunda (Allgen) 1952
Acineta ovoidea Allgen 1952

Common Name (s)
Economic Importance and Threats



• Maharashtra, Ratnagiri (Lat: 17.01) (Long: 73.25) INDIA (Record: 14/01/2006) (Depth: -14.5 mts)

Literature Source(s)
  • Dovgal, I; Chatterjee, T and Ingole, B. (2009) New Records of Thecacineta cothurnioides and Trematosoma rotunda (Ciliophora, Suctorea) as epibionts on nematodes from the Indian Ocean Protistology 6 (1) 19–23 Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

Page last updated on:2012-02-08

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