Biarmifer		Contents		Rev: 03/10/2026
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Biarmifer Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Cyatholaimidae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Chromadorea

  Chromadoria

   Chromadorida

Chromadorina

             Chromadoroidea

                Cyatholaimidae

        Cyatholaiminae

       Biarmifer Wieser, 1954

Type species of genus: Biarmifer cochleatus Wieser, 1954

    Synonyms:

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Morphology and Anatomy:

• Cuticle heterogeneous; enlarged hexagonal punctations in transverse rows anterior to nerve ring; simple punctations posterior to nerve ring;  with or without lateral differentiation of widely-spaced dots.
• Pore complexes in four or eight longitudinal rows, with slit-like aperture variable, at 0-90� angles to the longitudinal body axis. 
• Medium-sized dorsal tooth, smaller sub-ventral teeth .
• No posterior pharyngeal bulb.
• Tail conical with or without a filiform portion.

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Distribution:

Widely distributed free-living marine genus.

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Feeding:

Food Sources and Feeding strategies for the genus Biarmifer

Probably microbial epistrate 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:

Cunha, B.R. 2023. Diversity of Free-living Marine nematodes: Taxonomy and Syatematic of Family Cyatholaimidae. PhD Thesis, University of Campinas, Brazil

Cunha, B.P., Fonseca, G., Amaral, A.C.Z. 2022. Diversity and Distribution of Cyatholaimidae (Chromadorida: Nematoda): A Taxonomic and Systematic Review of the World Records. Frontiers in Marine Science 9:2022 https// DO.org/10.3389/fmars.2022.836670

Cunha, B.P., Fonseca, G., Amaral, A.C.Z. 2023. Two new species of Cyatholaimidae (Nematoda: Chromadorida) from the Southeastern Brazilian coast with emphasis on the pore complex and lateral pore-like structures. PeerJ 2023 Fev 20; 11:e14712 doi: 10.7717/peerj.14712

Pastor de Ward, C.T. 2001. A new nematode from West Patagonian coasts, Biarmifer madrynensis sp. n. with a redefinition of the genus Biarmifer Wieser, 1954 (Nematoda, Cyatholaimidae) Biologie 71:139-149.

Wieser, W. 1953. Die Beziehungzwischen Mundhhlengestalt, Emhrungsweise und Vorkommenbeimarinen Nematoden. Arkive Zoologie, 4: 439-484.

Copyright © 1999 by Howard Ferris.
Revised: March 10, 2026.