Actinonema		Contents		Rev: 03/02/2026
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Actinonema Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Chromadoridae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Chromadorea

  Chromadoria

   Chromadorida

    Chromadoridae

Euchromadorinae

       Actinonema  Cobb, 1920

Type species of genus: Actinonema pachydermatum  Cobb, 1920

    Synonyms:
     

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Morphology and Anatomy:

• Cuticle heterogeneous with lateral differentiation as a ridge beginning at the end of pharynx.
• Six outer labial setae and four cephalic setae in one circle.
• Amphidial fovea conspicuous transversely oval with a double contour.
• Posterior pharyngeal bulb may be developed, single or double.

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Distribution:

Marine, intertidal regions. Samples from Yellow Sea, China

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Feeding:

Food Sources and Feeding strategies for the genus Actinonema

Epistrate microbial feeders

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Biology and Ecology:

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Life Cycle:

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Ecosystem Functions and Services:

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Management:

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References:

Chu, M., Hao, Y., Huang, M. 2023. Two new species of Chromadorida (Nematoda) from the intertidal zone of the Yellow Sea, China. J. Nat. History 57:1364-1376

Tchesunov, A.V. 2013. 7.12 Order Chromadorida Chitwood, 1933. In Schmidt-Rheas and de Gruyter, W. Handbook of Zoology.Gastrocticha, Cycloneuralia, Gnatifera. Volume 2: Nematoda

Copyright © 1999 by Howard Ferris.
Revised: March 02, 2026.