Paradasys subterraneus

Paradasys subterraneus is a Gastrotricha with a bodylength up to 0.6 mm.[1] The species is marine.[2]

Paradasys subterraneus
Paradasys subterraneus
Scientific classification
Kingdom:
Animalia
Superphylum:
Platyzoa
Phylum:
Gastrotricha
Order:
Macrodasyida
Family:
Cephalodasyidae
Genus:
Paradasys
Species:
P. subterraneus
Binomial name
Paradasys subterraneus
Remane, 1934

Morphology

Gastrotricha are microscopic animals ranging from 0.06-3.0 mm in body length.[2] Paradasys subterraneus has a bodylength up to 0.6 mm (Karling 1954).

Ecology

Gastrotricha are aquatic free-living worms, belonging to the benthic meiofauna. They have a high density in marine sediments and are often among top three of meiofauna found here, only surpassed by nematoda and harpacticoid Copepoda. The density of Gastrotrica can be as high as 364 individuals/10 cm2.[2] Distribution of Paradasys subterraneus: British Isles, East North Atlantic, European waters (ERMS scope), Mediterranean Sea, Polish Exclusive Economic Zone, United Kingdom Economic Zone, Wimereux [3]

Systematics

The phylogenetic relationships of the Gastrotricha are still unclear: Morphological studies place Gastrostricha near the Gnathostomulida, the Rotifera, or the Nematoda. Molecular data have shown that the Gastrotricha are sister taxon to the Platyhelminthes. Later studies have placed them elsewhere, including close to the Ecdysozoa or the Lophotrochozoa.[2]

References
  1. Karling V. T. G. (1954). "Über einige Kleintieredes Meeressandes des Nordsee-Ostsee-Gebietes". Arkiv för Zoologi. 7 (14): 241–249.
  2. Todaro M. A. & Hummon W. D. (2008). "An overview and a dichotomous key to genera of the phylum Gastrotricha". Meiofauna Marina. 16: 3–20.
  3. Todaro, A.; Hummon, W.; d'Hondt, J. (2013). "Paradasys subterraneus Remane, 1934". WoRMS.
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