Aculonchus argutus

Aculonchus argutus	Contents	Rev 02/14/2023
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Aculonchus Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Leptonchidae Menu	Feeding	References
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Belonenchinae

Aculonchus argutus Siddiqi, 1982

The type species of the genus.

Synonym:
Basirotyleptus (Aculonchus argutus (Siddiqui, 1982) Jairajpuri & Ahmad, 1992

Morphology and Anatomy:

Body length < 1mm.
Cuticle with widely spaced radial elements.
Lip region hemispherical, offset by a deep constriction; papillae indistinct.
Amphids large, stirrup-shaped with wide apertures.
Sclerotized stoma narrow goblet-shaped, 2/3 lip region-width long.
Odontostyle solid, needle-like.
Odontophore straight to slightly arcuate dorsalIy, flanged.
Esophagus slender, with indistinct inner lining, gradually enlarges posteriorly to form a saccate bulb with prominent cuticular thickening in posterior half , 1.5 to 1.4 of esophagus length.
Cardia large, rounded. Intestine 2~celled in circumference.
Prerectum indistinct. Rectum about 1.6-1.8 times body-width long.
Tail conoid with blunt tip, about one anal body-width long.

Males: Diorchic, testes outstretched. Ventromedian supplements 1.
.	Female: Didelphic-amphidelphic. Ovaries reflexed, with less than 10 oocytes; anterior ovary often less developed than the posterior. Vulva transverse Ref: Andrassy, 2009; Siddiqi, 1982

Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

Distribution:

Reported from soil from primary rainforest, Amazonas, Colombia. (Same as A. arcutus).

CCharacteristic slender odontostyle of other members of the Leptonchidae suggests fungal feeding. However, solid needle-like configuration of odontostyle may suggest alternative food sources (Yeates et al., 1993).

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Biology and Ecology:

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Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click	If species level data are not available, click for genus level parameters

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Ecosystem Functions and Services:

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Management:

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References:

Andrassy, I. 2009. Free-living Nematodes of Hungary (Nematoda Errantia) Vol. 111. Humgarian Natural History Museum, Budapest. 508p.

Siddiqi, M.R. 1982. Three new species of Aculonchus gen. n. and Aculonchus argutus gen. n., sp. n.(Dorylaimida: Belonenchinae). Indian J. Nematology 12:312-319

Siddiqi, M.R. 1995. Nematodes of tropical rainforests. 5. Seven new genera and forty two new species of dorylaims. Afro-Asian J. Nematology 5: 72-109.

Yeates, G.W., T. Bongers, R. G. M. De Goede, D. W. Freckman, and S. S. Georgieva. 1993. Feeding habits in soil nematode families and genera—An outline for soil ecologists. Journal of Nematology 25:315-331.