Trichostrongylus		Contents		Rev 10/13/2026
Hairworms; Bankrupt Worms; Caecal Threadworm		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Trichostrongylus Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Trichostrongylidae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Chromadorea

Chromadoria

Rhabditida

  Rhabditina

   Trichostronglyloidea

    Trichostrongylidae

Trichostrongylinae

Trichostrongylus Looss, 1905

Type species of the genus:

Synonyms:

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Morphology and Anatomy:

•  

• Male:

  Female:

ref:

..

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Distribution:

Distributed worldwide.

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Economic Importance:

Intestinal parasites of humans, herbivorus domestic, wild animals and birds (Ghasemikhah et al., 2011; Nagaty, 1931; Tompkins, 2008).

Species ot Trichostrongylus are monoxenous and require only a single host to complete the lifecycle.

The genus Trichostrongylus includes parasitic nematodes with a direct life cycle that infect cattle, sheep, goats, and other wild ruminants (deer, antelope, camels, zebras, etc.) worldwide. They also infect pigs, horses, and poultry.

Two species, T. axei and T. colubriformis, are major ruminant parasites of veterinary importance (Snyder et al., 2020).

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Hosts:

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Feeding:

Food Sources and Feeding strategies for the genus Trichostrongylus

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Life Cycle:

Direct life cycle, no intermediate hosts

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Damage:

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Management:

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References:

Ghasemikhah R, Mirhendi H, Kia E, Mowlavi G, Sarmadian H, Meshgi B, Golestan B, Mobedi I. 2011. Morphological and morphometrical description of trichostrongylus species isolated from domestic ruminants in Khuzestan province, southwest Iran. Iran J Parasitol. 6::82-8. PMID: 22347301; PMCID: PMC3279896.

Nagaty, H. F. 1932.. The Genus Trichostrongylus Looss 1905. Annals of Tropical Medicine & Parasitology, 20:457-518. https://doi.org/10.1080/00034983.1932.11684725

Snyder, D.E., Marchiondo, A.A. Cruthers, L.R. 2020. Nematoda, Trichostrongyloidea. Chapter 2 in Marchiondo, Cruthers and Fourie (eds) Parasiticide Screening Vol 2. Academic Press.

Tompkins, D.M. 2008. Trichostrongylus. Chapter 17 in Atkinson, C.T., Thomas, N.J., Hunter, D.B.Parasitic Diseases of Wild Birds. Wiley-Blackwell

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