Metadesmolaimus

Metadesmolaimus	Contents	Rev: 08/04/2025
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Metadesmolaimus Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Xyalidae Menu	Feeding	References
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Classification:

Chromadorea
Chromadoria
Monhysterida: Monhysterina
Sphaerolaimoidea
Xyalidae
Metadesmolaimus Schuurmans-Stekhoven, 1935

Type species of the genus: Metadesmolaimus labiosetosus Schuurmans-Stekhoven, 1935

Synonyms:

Morphology and Anatomy:

With general characteristics of family Xyalidae, and:

Cuticle brownish color and annulated;
Buccal cavity extended anteriorly forming cylindrical anterior section;
Cephalic setae (6+4) (characteristic of the family Xyalidae); inner labial sensilla setiform, outer labial setae and cephalic setae in one circle;
Tail conico-cylindrical with terminal setae.
anterior testis on left and posterior testis on right side of the intestine (also characteristic of the family Xyalidae)

Females:

Monodelphic, prodelphic

Ref: Venekey et al., 2014; Huang and Guo, 2022

Males:

Diorchic: anterior testis on left and posterior testis on right side of the intestine
Gubernaculum present

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

Distribution:

Marine nematodes. Species have been described from the North Sea and the White Sea (Venekey et al., 2014).

Feeding:

Food Sources and Feeding strategies for the genus Metadesmolaimus

Life Cycle:

For Ecophysiological Parameters for this genus, click

Ecosystem Functions and Services:

Fonseca, G., Bezerra. T.N. 2013. Order Monhysterida. Filipjev, 1929. In: Schmidt-Rhaesa A (ed) Handbook of Zoology: Gastrotricha, Cycloneuralia, Gnathifera, volume 2 Nematoda. De Gruyter, Berlin, pp 435-466

Huang, Y., Guo, Y. 2022. Order Monhysterida Filipjev, 1929. In: Free-living Marine Nematodes from the East China Sea. Springer, Singapore. https://doi.org/10.1007/978-981-16-3836-7_{_}9

Pastor de Ward, C.T. 1985. Nematodes marinos de la Ria Deseado (Monhysteroidea, Xyalidae), Santa Cruz, Argentina.II, PHYSIS Secc A 43(105):113-130

Venekey, V., Gheller, P.F., Maria , T.F., Brustolin, M.C., Kandratavicius , N., Vieira , D.C., Brito, S., Souza, G.S., Fonseca, G. 2014. The state of the art of Xyalidae (Nematoda, Monhysterida) with reference to the Brazilian records. Marine Biodiversity DOI 10.1007/s12526-014-0226-3