Deontostoma		Contents		Rev: 02/21/2024
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Deontostoma Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Leptosomatidae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Enoplea

  Enoplia
        Enoplida

            Ironina

                Ironoidea

                     Leptosomatidae

Deontostomatinae

Deontostoma  Filipjev, 1916

    Synonyms:

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Morphology and Anatomy:

• Posterior margin width of cephalic capsule narrower than 2.0 anterior margin widths of cephalic capsule.
• Intralobar lacuna (grooves on the cephalic capsule) present or absent.
• Mouth opening triangular, enclosed by three microlabia with odontia.
• Buccal cavity with or without onchia.
• Ocelli consisting of pigment spot and lens-like structure in pharyngeal region present or absent.
• Tail short, conical or cylindrical in shape, with blunt tip.
• Caudal glands extending anterior to cloacal opening/anus.

Male: Spicules strongly developed. Gubernacula paired, parallel to spicules, with or without crus (lateral guiding pieces of gubernacula).. One or two precloacal ventromedian supplements present. Two precloacal subventral rows consisting of setae and/or papillae also present.
	Body size range for the species of this genus in the database - Click:
Scanning electon micrograph of stoma aperture of Deontostoma coptochilus (scale = 5um). from Hope (1982).

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Distribution:

Free-living marine nematodes. Generally among the larger free-living marine nematodes.. .

Nematodes of this genus have been collected in both high and low latitudes of both hemispheres (Shimada and Jimi, 2022).

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Feeding:

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Biology and Ecology:

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Life Cycle:

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Ecosystem Functions and Services:

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Management:

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References:

Hope, W.D. 1982. Structure of head and stoma of the marine nematode genus Deontostoma (Enoplidae: Leptosomatidae). Smithsonian Contrib. Zool. 353.

Leduc, D. (2013). Deontostoma tridentum n. sp. (Nematoda, Leptosomatidae) from the continental slope of New Zealand. Zootaxa 3722, 483-492. DOI: 10.11646/zootaxa.3722.4.3

Shimada, D., Jimi, N. 2022. Taxonomic revision of the free-living marine nematode genus Deontostoma (Enoplida: Leptosomatidae) and inclusion of a new species from the Southern Ocean. Nematology, 24:1031-1047. doi: https://doi.org/10.1163/15685411-bja10189

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Copyright © 1999 by Howard Ferris.
Revised: February 21, 2024.