Paurodontella

Paurodontella	Contents	Rev: 03/15/2025
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Paurodontella Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Sphaerulariidae Menu	Feeding	References
	Go to Nemaplex Main Menu	Go to Dictionary of Terminology

Rhabditida

Tylenchina/Hexatylina

Sphaerularioidea

Sphaerulariidae

Paurodontinae

Paurodontella Husain & Khan, 1968

Type species: Paurodontella minuta Husain & Khan, 1968

Synonyms:

Paurodontus Thorne, 1941

Morphology and Anatomy:

Body short, slender to robust (L = 0.29-0.75 mm; a = 14-34).
Lateral fields usually distinct except for P. apitica (mostly obscure), each with four, six or seven incisures.
Cephalic region continuous, truncate to round with prominent depression at oral opening; lateral sectors narrower than submedians.
Stylet 7-14 um long, basal knobs symmetrical or nearly so, rounded, flattened posteriorly.
Orifice of dorsal pharyngeal gland just posterior to stylet base.
Corpus cylindrical, slightly swollen posteriorly; isthmus long, slender; basal bulb with long stem-like extension, usually projecting into intestine or reaching to intestine.
Excretory pore opposite base of pharyngeal bulb or opposite nerve ring.
Tails of both sexes similar, almost straight, short, conoid-pointed, up to five anal body diam. long, with or without a mucro on tail terminus.

Females:

Vulva-anus distance ca one tail length or less; vulval lips not prominent or modified.
Vagina less than half body diam. long, usually at right angle to body axis.
Post-vulval uterine sac present or absent, uterus often with an offset diverticulum.
Ovary anteriorly outstretched, with oocytes mostly in one row and reaching pharynx, some species with a prominent small anterior projection attached to oviduct branching to form a uterine diverticulum.

Males:

Bursa adanal.
Spicules moderately robust, cephalate, 15-22 um long.
Gubernaculum simple 6-10 um long.

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

Feeding:

Free-living and insect-parasitic forms.

Like many Hexatylina, the biology is not well knon. There are entomoparasitic generations (parasites of insects and mites) and perhaps free-living mycophagous generations.

Life Cycle:

For Ecophysiological Parameters for this genus, click

Ecosystem Functions and Services:

Handoo, Z.A., Iqbal, E.Y., Kazi, N., and Fayyaz, S. 2010. Two new species of Paurodontella Husain & Khan, 1968 (Nematoda: Sphaerulariidae) associated with wheat and a diagnostic compendium to the genus. Nematology 12:181-192.

Thorne, G. 1941. Some nematodes of the family Tylenchidae which do not possess a valvuklar median bulb. The Great Basin Naturaist 2:37-85.

Paurodontella

Contents

Classification:

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Morphology and Anatomy:

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Distribution:

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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:

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Copyright © 1999 by Howard Ferris.
Revised: March 15, 2025.

Paurodontella

Copyright © 1999 by Howard Ferris. Revised: March 15, 2025.

Copyright © 1999 by Howard Ferris.
Revised: March 15, 2025.