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Diurodrilus

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Diurodrilus is a genus of tiny marine animals that has traditionally been assigned to the annelid worms, although this affinity is not certain. With a maximum length of 0.45 mm, it has an unusual morphology with many traits not found in other annelids, including a ventral creeping foot.[1][2] Analyses of DNA have both refuted and supported placement within the annelids,[2][3] with the unusual morphology perhaps due to evolutionary progenesis, in which organisms develop sexual maturity while retaining the larval traits of their ancestors.[3]

The following species are recognised:[2][4]

References

  1. ^ Kristensen, R. M.; Niilonen, T. (1982). "Structural Studies on Diurodrilus Remane (Diurodrilidae fam.n.), with Description of Diurodrilus westheidei sp.n. From the Arctic Interstitial Meiobenthos, W. Greenland". Zoologica Scripta. 11: 1. doi:10.1111/j.1463-6409.1982.tb00514.x.
  2. ^ a b c Katrine Worsaae & Greg W. Rouse; Rouse (2008). "Is Diurodrilus an annelid?". Journal of Morphology. 269 (12): 1426–1455. doi:10.1002/jmor.10686. PMID 18985766.
  3. ^ a b Golombek, Anja; Tobergte, Sarah; Nesnidal, Maximilian P.; Purschke, Günter; Struck, Torsten H. (2013). "Mitochondrial genomes to the rescue – Diurodrilidae in the myzostomid trap". Molecular Phylogenetics and Evolution. 68 (2): 312–326. doi:10.1016/j.ympev.2013.03.026. PMID 23563272.
  4. ^ Kristian Fauchald & Gérard Bellan (2012). Read G, Fauchald K (eds.). "Diurodrilus Remane, 1925". World Polychaeta database. World Register of Marine Species. Retrieved September 12, 2012.
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Diurodrilus: Brief Summary

provided by wikipedia EN

Diurodrilus is a genus of tiny marine animals that has traditionally been assigned to the annelid worms, although this affinity is not certain. With a maximum length of 0.45 mm, it has an unusual morphology with many traits not found in other annelids, including a ventral creeping foot. Analyses of DNA have both refuted and supported placement within the annelids, with the unusual morphology perhaps due to evolutionary progenesis, in which organisms develop sexual maturity while retaining the larval traits of their ancestors.

The following species are recognised:

Diurodrilus minimus Remane, 1925 Diurodrilus ankeli Ax, 1967 Diurodrilus benazzii Gerlach, 1953 Diurodrilus dohrni Gerlach, 1952 Diurodrilus subterraneus Remane, 1934 Diurodrilus westheidei Kristensen & Niilonen, 1982
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