Pararaeolaimus tetradenus

Pararaeolaimus tetradenus	Contents	Rev: 11/10/2024
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Pararaeolaimus Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Diplopeltidae Menu	Feeding	References
	Go to Nemaplex Main Menu	Go to Dictionary of Terminology

Classification:

Chromadorea
Chromadoria
Araeolaimida: Araeolaimoidea; Diplopeltidae


Pararaeolaimus tetradenus Leduc, 2017

    Synonyms:

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Morphology and Anatomy:

Body short, cylindrical, tapering slightly towards anterior and posterior ends, with rounded anterior extremity and short conical tail.
Cuticle smooth without somatic setae. four short cephalic setae present, 1 um long.
Amphideal fovea large, situated 1.2 cbd from anterior end, loop-shaped with circular contour, ventrally wound.
Buccal cavity small, cup-shaped, without teeth; walls of buccal cavity not cuticularised.
Cylindrical pharynx with weak posterior bulb; pharyngeal tubes present.
Nerve ring near middle of pharynx length. Secretory-excretory system present, with two pairs of large renette cells, subventral and slightly posterior to pharynx. (Hence tetradenus - four glands)
Cardia 16 um long, not surrounded by intestine

Female:

Didelphic, with anterior outstretched ovary to the left of intestine and posterior outstretched ovary to the right.
Spermatheca not observed.
Vulva located near mid-body.

Ref: Leduc, 2017

Males:

Diorchic testes short, opposed testes, Mature sperm cells globular
Spicules paired, equal, almost straight, 1.1 cbd long, without capitulum, pointed distally.
Gubernaculum, precloacal supplements, and precloacal seta absent.
Tail conical; three caudal glands and spinneret present

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

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Distribution:

Collected from bottom sediment at 482m depth on Challenger Plateau, New Zealand continrntal shelf.

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Feeding:

Free-living marine nematodes

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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:

Leduc, D. 2017. Four new nematode species (Araeolaimida: Comesomatidae, Diplopeltidae) from the New Zealand continental slope. Zootaxa 4237 (2): 244-264.

Pararaeolaimus tetradenus

Ref: Leduc, 2017

Copyright © 1999 by Howard Ferris. Revised: November 10, 2024.

Copyright © 1999 by Howard Ferris.
Revised: November 10, 2024.