Lordellonema porosum

Lordellonema porosum	Contents	Rev 06/03/2024
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Lordellonema Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Crateronematidae Menu	Feeding	References
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Classification:

Enoplea

Dorylaimia
Dorylaimida

Crateronematidae

Lordellonematinae

Lordellonema porosum Heyns, 1963

Synonyms:

Morphology and Anatomy:

Slender nematodes of small size, 0.58-0.59 mm long body, curved ventrad or slightly open C-shape upon fixation.
Outer and inner layer of cuticle distinctly striated, 1.0 um thick in anterior region,
Lateral chords 5 um wide at mid-body, occupying about one-fifth of corresponding body diameter.
Lateral body pores distinct, present in double row, 5-6 in pharyngeal region, 5 between pharynx base and vulva and 6-7 in the post vulval region; dorsal pores four located anterior to nerve ring; ventral pores 7-8 in pharyngeal region, 7-8 between pharynx base and vulva and 8-9 between vulva and anus
Lip region distinctly offset, 2.4-3.0 times as broad as high and about 34% of body diameter at neck base; lips separate; labial papillae raised.
Amphids large, cup-shaped, their aperture occupying 55% of lip region diameter. Cheilostom nearly cylindrical.
Odontostyle typical dorylaimoid, 9.3 times as long as wide, 1.6-1.8 times lip region diameter and 2.4% of body length, its aperture 4.5-5.0 um long or occupying 34% of its length.
Guiding ring single, at about 0.8-0.9 times lip region diameter from anterior end.
Odontophore linear, rod-like, 0.85 times as long as odontostyle.
Nerve ring located at 48% of total neck length.
Anterior region of pharynx enlarging very gradually; basal expansion 3.8-4.2 times as long as broad, 2.1-2.4 times as long as body diameter, occupying about 34% of total neck length.
Cardia hemispheroid to rounded conoid, about 18% of the cbd
corresponding body diameter long. Pharyngeal gland nuclei and their orifices are located as follows: DO=69.7â€“70; DN=72.7â€“75.9; DOâ€“DN=2.4â€“3.1; S₁N₁=79.3; S₁N₂=86.7; S₂N= 91.5; S₂O=92.7.

Female:

Didelphic- amphidelphic,
Vulva pore-like. Vagina extending inwards about 8.0-9.5 um, occupying about 30-38% of corresponding body diameter. Pars proximalis vaginae spheroid, 5.0-6.0 Ã— 2.0-2.5 um, encircled by circular muscles; pars refringens vaginae absent; pars distalis vaginae with curved walls,
Prerectum 2 x abd; rectum 1 x abd lng.
Tail rounded-conoid, about as long as abd., its ventral side almost straight.
Caudal pores two, subdirsal

Males:

Not found; no sperm in female genital tract

Ref: Imran eand Ahmad, 2019

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

Originall described by Heyns (1963) from South Africa. Redescribed by Imam and Ahmad (2019) from soil around the roots of natural vegetation, Sao Jorge, Santiago, Cabo Verde; 15Â°0â€²49.212â€³N 24Â°25â€²37.7436â€³W.

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Feeding:

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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 III. Hungarian Natural History Museum, Budapest. 608p.

Heyns, J. 1963. Five new species of Leptonchidae (Nemata: Dorylaimoidea) from South Africa. Proceedings of the Helminthological Society of Washington, 30: 7â€“15

Siddiqi, M.R. 1982. Sicorinema gen. n. and Lordellonema gen. n.(Dorylaimida: Crateronematidae) with descriptions of four new species. Nematologia Mediterranea 10:157-166.

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