Chromadorea

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Chromadorea
Anisakid larvae in the body cavity of an Atlantic herring
Anisakid larvae in the body cavity of an Atlantic herring
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Nematoda
Class: Chromadorea
Inglis, 1983
Subclass: Chromadoria
Pearse, 1942

The Chromadorea are a class of the roundworm phylum, Nematoda. They contain a single subclass (Chromadoria) and several orders. With such a redundant arrangement, the Chromadoria are liable to be divided if the orders are found to form several clades, or abandoned if they are found to constitute a single radiation.

Formerly, they were treated as a subclass in the

monophyletic as delimited here; at least the Monhysterida
seem to be a distinct and far more ancient lineage than the rest.

Members of this class' bodies usually have annules, their

esophageal glands. They usually live in marine sediments, although they can live elsewhere. They have a more sophisticated pharynx
than most roundworms.

Members of this class can be identified by the presence of eight conserved signature indels (CSIs) exclusively shared by the class.[1] These molecular markers are found in essential proteins such as tRNA (guanine-N(1))-methyltransferase and can serve as a reliable molecular method of distinguishing the Chromadorea from other classes within the phylum Nematoda.[1]

Orders

See also: List of nematode families

Provisionally, the following orders are placed here:

Notes

The Benthimermithida are also occasionally placed here.

The Ascaridida appear to be nested within Rhabditida.[4]

A part of the Nematoda phylum, one of the nine main phyla. Along with other certain species of roundworms.

Most frequently related to other main species of roundworms such as Earthworms, Pinworms, Hookworms, and Stongyloides.

References

  1. ^
    PMID 31554175
    .
  2. ^ a b Martina Wijova; Frantisˇek Moravec; Alesˇ Hora'k; Julius Lukes (April 2006). "Evolutionary relationships of Spirurina (Nematoda: Chromadorea:Rhabditida) with special emphasis on dracunculoid nematodes inferred from SSU rRNA gene sequences". Elsevier. Archived from the original on 2018-03-03. Retrieved 2018-10-03.
  3. ^ "Phylum Nematoda". THE "NEMATODE-PLANT EXPERT INFORMATION SYSTEM" A Virtual Encyclopedia on Soil and Plant Nematodes. November 2017.
  4. PMID 21813000
    .

External links

Wikispecies has information related to Chromadorea.
  • Tree of Life Web Project (ToL) (2002): Nematoda. Version of 2002-JAN-01. Retrieved 2008-NOV-02.


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