Dorylaimida

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

Dorylaimida
Picture of a roundworm taken from wet soil. The front of the worm is on the left, and the dark line visible at the end is its feeding apparatus, known as a stylet.
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Nematoda
Class:	Enoplea
Subclass:	Dorylaimia
Order:	Dorylaimida Pearse, 1942
Suborder
See text

Taxonomy

History

The order originated with the description of Dorylaimus stagnalis by Dujardin in 1845, and in 1876 De MAn proposed the family Dorylamidae, while Cobb added many other genera and subgenera. In 1927 Filipjev added a subfamily, Dorylaiminae, and by 1934 there were four subfamilies. That was when Thorne raised family Dorylaimidae to superfamily Dorylaimoidea. In 1936 Pearse raised it further to become a suborder of Enoplida, and in 1942 Pearse proposed the current order, Dorylaimida to encompass all of the dorylaim nematodes. Many reorganisations followed. For instance Clark (1961) did not accept Dorylaimida, whereas Goodey (1963) did. Other reclassifications include Jairajpuri (1964, 1969, 1976, 1980, 1983, 1992), Thorne (1964, 1967), Siddiqui (1968, 1983), Andrássy (1969, 1976), and Coomans and Loof (1970). The scheme shown here is that of Jairajpuri (1992), which excludes the mononchs, alaims (Alaimida) and diphtherophorids (Triplonchida).

With the advent of molecular phylogenetic analysis, a further reorganisation has been necessary.

Subdivision

The families of order Dorylaimida are divided into three suborders and a number of superfamilies:

• Suborder Dorylaimina Pearse, 1942 (Type Suborder)
  • Superfamily Dorylaimoidea de Man, 1876
    • Family Actinolaimidae
    • Family Aporcelaimidae
    • Family Dorylaimidae
    • Family Longidoridae
    • Family Nordiidae
    • Family Qudsianematidae
  • Superfamily Belondiroidea Throne, 1939
    • Family Belondiridae
  • Superfamily Tylencholaimoidea Filipjev, 1934
    • Family Aulolaimoididae
    • Family Leptonchidae
    • Family Mydonomidae
    • Family Tylencholaimidae
• Suborder Nygolaimina Thorne, 1935
  • Superfamily Nygolaimoidea
    • Family Aetholaimidae
    • Family Nygellidae
    • Family Nygolaimellidae
    • Family Nygolaimidae
• Suborder Campydorina Jairajpuri, 1983
  • Superfamily Campydoroidea
    • Family Campydoroidae

Bibliography

• Lee, Donald L, ed. (2010). The biology of nematodes. London: Taylor & Francis. ISBN 978-0415272117. Retrieved 16 December 2014.
• Ahmad, Wasim; Jairajpuri, M. Shamim (1992). Dorylaimida : free-living, predaceous and plant-parasitic Nematodes. Leiden: E.J. Brill. ISBN 9004092293. Retrieved 19 December 2014.