Dorylaimia

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Dorylaimia
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Domain: Eukaryota
Kingdom: Animalia
Phylum: Nematoda
Class: Enoplea
Subclass: Dorylaimia
Inglis, 1983
Orders

Dorylaimia is a subclass of nematodes.

Description

In general, members of subclass Dorylaimia exhibit a great diversity of terrestrial and freshwater species, most of which are large predators or omnivorous free-living species. Some are plant parasites, whereas others are animal parasites (Trichinellida and Mermithida). No members of the Dorylaimia are found in marine habitats. Dorylaimia bear an odontostyle, a protrusible, hollow, needlelike tooth for puncturing and emptying food items.

Contents

Taxonomy

Phylogenetic analysis of phylum Nematoda suggests three distinct basal clades, the dorylaims, enoplids, and chromadorids. [1] These represent Clades I, II and C+S of Blaxter (1998). [2] Of these, the first two appear to have sister clade status, allowing resolution into two classes, Enoplea and Chromadorea, and division of the former into two subclasses corresponding to Clades I and II respectively, the Enoplia and Dorylaimia. Nevertheless, the possibility remains that Dorylaimia will eventually be shown to be a distinct third class of nematodes. [3]

Subdivision

Phylogenetic analysis has resulted in a reorganization, with, for instance, moving the Triplonchida to subclass Enoplia.

Subclass Dorylaimia is divided into the following orders;

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<span class="mw-page-title-main">Nematomorpha</span> Phylum of parasitoid animals, horsehair worms

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<span class="mw-page-title-main">Class (biology)</span> Taxonomic rank between phylum and order

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<span class="mw-page-title-main">Enoplea</span> Class of roundworms

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<span class="mw-page-title-main">Secernentea</span> Class of roundworms

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<span class="mw-page-title-main">Chromadorea</span> Class of roundworms

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.

<span class="mw-page-title-main">Dorylaimida</span> Order of roundworms

Dorylaimida (dorylaims) is a diverse order of nematodes with both soil and freshwater species.

<span class="mw-page-title-main">Diplogasterida</span> Order of roundworms

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Enoplida is an order of nematodes. It is one of two orders in Enoplia, which is one of two subclasses in Class Enoplea.

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Triplonchida is an order of terrestrial nematodes, and is one of two orders making up the subclass Enoplia.

Diphtherophorina is a suborder of terrestrial nematodes, being one of three that constitute suborder Triplonchida.

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<i>Trichodorus</i> Genus of roundworms

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References

Further reading