Dorylaimopsis

Dorylaimopsis	Contents	Rev: 02/11/2025
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Dorylaimopsis Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Comesomatidae Menu	Feeding	References
	Go to Nemaplex Main Menu	Go to Dictionary of Terminology

Classification:

Chromadorea
Chromadoria
Chromadorida: Comesomatoidea
Comesomatidae: Dorylaimopsinae
Dorylaimopsis Ditlevsen, 1918

Type species of the genus: Dorylaimopsis punctata Ditlevsen, 1918

Synonyms:

Morphology and Anatomy:

Body cylindrical; with anterior blunt end and tail conico-cylindrical.
Cuticle is punctated - longitudinal rows of coarse dots.
Rows of long somatic setae
Inner labial sensilla may be indistinct, outer labial sensilla papilliform and the cephalic densilla long and setiform.
Stoma tubular with 3 large teeth in the anterior
Pharynx long with terminal bulb
Amphids multispiral
Tail long, conicocylindrical, with setae (fewer in female) and prominent spinneret

Ref: Muthumbi et al., 1997 (Based mainly on description of D. coomansi) and Zhang, 1992

Dorylaimopsis turneri: 1. male haed; 2 punctaytions at mid-body; 3. Male anterior; 4. Male tail and spicule; 5. Femele head; 6: Female tail Scale bars = 20 um
Drawingds from Zhang, 1992

Females:

Didelphic, amphidelphic, vulva at mid-body, ovaries outstretched, may be reflexed.
Short uteri, small spermathecae

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

Males:

Diorchic, testes opposed and outstretched
Spicules long
Precloacal supplements
Gubernaculum present

Specimens of some species were collected from bottom substrate in the Indian Ocean mainly at depths of 20-100m (Muthumbi et al., 1997). Also from the Bohai Sea, China, in clay-silt deposits at 10m depth (Zhang, 1992).

Back to Top

Feeding:

Free-living marine nematodes. The three large teeth suggest omnivory as well as epistrate feeding.

Back to Top

Biology and Ecology:

Back to Top

Life Cycle:

For Ecophysiological Parameters for this genus, click

Back to Top

Ecosystem Functions and Services:

Back to Top

Management:

Back to Top

References:

Ditlevsen, H., 1918. Marine freeliving nematodes from Danish waters. Vidensk. Meddr. Dansk. Naturh, Foren. 70 : 147-214.

Muthumbi, A.W., Soetaert, K., Vincx, M. 1997. Deep-sea nematodes from the Indian Ocean: new and known species of the family Comesomatida. Hydrobilogia 346:25-57.

Zhang Z. 1992. Two new species of the genus Dorylaimopsis Ditlevesen, 1918 (Nematoda: Adenophora, Comesomatidae) from the Bohai Sea, China. Chinese J. Oceanol, Limnol 10:31-39.