Filiponema

Filiponema	Contents	Rev 05/12/2025
	Classification	Hosts
	Morphology and Anatomy	Life Cycle
Return to Filiponema Menu	Economic Importance	Damage
	Distribution	Management
Return to Drilonematidae Menu	Feeding	References
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Classification:

Chromadorea
Rhabditida Tylenchina Drilonematoidea
Drilonematidae: Iponematinae

Filiponema Timm & Maggenti, 1966

Type species of the genus: Filiponema philippinense Timm & Maggenti, 1966

Synonyms:

Morphology and Anatomy:

Ten cephalic sensilla supporting a raised membrane, rarely four sensilla present,
Large amphidl apertures (> 0.5 corresponding body diam. wide) lacking apparent pouch,
Pharynx clavate to cylindroid, nerve ring located just posterior to pharynx,
Excretory pore poorly distinguishable, situated posterior to pharynx base.

Filiponema unidentified sp depicted left:

Stoma reduced.
Amphid apertures circular, 40 um from anterior 28 um diam., surrounded by inner, thin rim and outer, convex, radially striated rim; no apparent pouch.
Bundle of ten long sensilla protruding from amphidl aperture.

Female:

Monodelphic, prodelphic. Ovary reflexed to just anterior of anus.
Vulva located at about mid-body, short post-uterine sac.

Male:

Spicules 20-25 um long, rarely longer

Ref: Ivanova and Spiridonov, 2015; Ivanova and Neuhaus, 2011.

Female of unidentified Filiponema sp. Upper, anterior lateral views showing amphid apertures; lower left:, vulval reginn; lower right lateral tail region showing caudal sensory organ,
Drawings adapted from Ivanova and Spiridonov, 2015

Body size range for the species of this genus in the database - Click:

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Distribution:

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Economic Importance:

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Feeding:

Food Sources and Feeding strategies for the genus Filiponema

Parasites of the coelomic cavity of annelids.

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Hosts:

For an extensive host range list for this genus, click

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Life Cycle:

For Ecophysiological Parameters for this genus, click

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Damage:

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Management:

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References:

Ivanova, E.S. and Neuhaus, B. 2011. A revision of the Iponematinae (Nematoda: Drilonematoidea) with description of three new species parasitic in tropical earthworms. Nematology 13:639-652.

Ivanova, E.S. and Spiridonov, S.E. 2015. Four new species of Iponematinae (Drilonematidae, Drilonematoidea, Cephalobomorpha) parasitic in earthworms: description and molecular affiliations. Nematology 17: 1207-1227.

Poinar, G.O. 1978. Associations Between Nematodes (Nematoda) and Oligochaetes (Annelida). Proc. Helminthol. Soc. Wash. 45:202-210.

Timm, R.W. 1967. Nematode parasites of the coelomic cavity of earthworms VII. Four new genera and thirteen new species of the family Drilonematidae. Pak. J. Biol. Agric. Sci. 10: 1-12.

Timm, R.W, and Maggenti, A.R. 1966. Nematode parasites of the coelomic cavity of earthworms. V. Plutellonema, Iponema, and Filiponema, new genera (Drilonematidae). Proc. Helminth. Soc. Wash. 33:177-184.

Filiponema

Copyright 1999 by Howard Ferris. Revised: May 12, 2025.

Copyright 1999 by Howard Ferris.
Revised: May 12, 2025.