Rev: 06/16/2022

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle
Return to Daptonema Menu Ecosystem Functions and Services
Distribution Management
Return to Xyalidae Menu Feeding  References
    Go to Nemaplex Main Menu   Go to Dictionary of Terminology


       Daptonema Cobb, 1920


Back to Top

Morphology and Anatomy:

Tail with two terminal setae.


  • Relatively large, 1.2-2mm with large body.
  • Cuticle finely striated, with thin setae
  • Head slightly offset with 12 cephalic setae
  • Amphids circular
  • No ocelli
  • Stoma very narrow, walls not sclerotized.
  • Esophagus more or less cylindrical

  • Monodelphic, Vulva about 75%



  • Diorchic
  • Spicules rather short, appearing rectangular
  • Gubernaculum present, with caudal extension.
  • Tail with a pair of setae

Ref: Andrassy, 1981

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


Marine and estuarine environments. Considered the most diverse and abundant genus of the family Xyalidae.  Nematodes of the genus Daptonema are an important component  of estuarine faunal analysis to determine levels of contamination and environmental quality.

Only a few species are freshwater inhabitants.

Back to Top


Predaceous nematodes - diatoms and other small marine organisms.

Daptonema setorum in estuarine environments feeding mainly on diatoms but also on bacteria, protozoa, algae and detritys (Moens and Vincx, 1997).

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


Back to Top


Andrassy, I. 1981. Revision of the order Monhysterida (Nematoda) inhabiting soil and inland waters. Opusc. Zool. Budapest XVII-XVIII:13-47.

Moens, Y. and Vincx, M. 1997. Observations on the feeding ecology of estuarine nematodes. Journal of the Marine Biology Assoc. U.K. 77:211-227.

Schratzbberger, M., Warwick, R.M. 1999. Differential effects of various types of disturbances on the structure of nematode assemblages: an experimental approach. Marine Ecology Progress Series 181:227-236

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

Copyright 1999 by Howard Ferris.
Revised: June 16, 2022.