Thalassironus

Thalassironus	Contents	Rev: 08/28/2026
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Thalassironus Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Ironidae Menu	Feeding	References
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Classification:

Enoplea
Enoplia Enoplida
Ironina
Ironoidea
Ironidae: Thalassironinae

Thalassironus de Man, 1889

Type species of the genus Thalassironus britannicus de Man, 1889

Synonyms:

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Morphology and Anatomy:

Cuticle smooth or finely striated; head may be offset by a constriction
Stoma surrounded by lips that form lobes.
Buccal cavity tubular or may be divided entirely or at the anterior end, forming three or four odontophores, with three solid, radially moveable teeth
Inner labial sensilla papilliform, outer labial and cephalic sensilla setiform.
Amphidial fovea pocket-shaped
Pharynx widens slightly in some species forming a weak basal bulb.
Tail short conical to conico-cylindical with a short spinneret
Caudal glands present

Ref: Shimada and Kakui, 2021; Smol et al., 2014; Huang and Guo, 2022

Males:

Monorchic
Spicules cephalate, short and narrow.
Gubernaculum plate-like

Females:

Didelphic, ovaries reflexed

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

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Distribution:

Marine nematodes; reported ferom subtidal silt sediment

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Feeding:

Food Sources and Feeding strategies for the genus Thalassironus

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Biology and Ecology:

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Life Cycle:

For Ecophysiological Parameters for this genus, click

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Ecosystem Functions and Services:

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Management:

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References:

Huang, Y. and Guo, Y. 2022. Free-living Marine Nematodes from the East China Sea, https://doi.org/10.1007/978-981-16-3836-7_10

Shimada, D. and Kakui, K. 2021. Three Free-living Marine Nematodes From Sagami Bay, Japan, With a Description of Wiesoncholaimus jambio sp. nov. (Nematoda: Oncholaimidae). Zool. Science 39:106-114.

Smol, N., Muthumbi, A., Sharma, J. 2014. Order Enoplida, 7.3. In Schmidt-Rhaesa, A. (ed) Handbook of Zoology. De Gruyter, Berlin

Thalassironus

Revised by Howard Ferris: August 28, 2026.