Cylicocyclus

 

Contents

 

Rev 01/20/2024

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle
Return to Cylicocyclus Menu Ecosystem Functions and Services
Distribution Management
Return to Strongylidae Menu Feeding  References
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Classification:

Enoplea
Rhabditida
    Rhabditina
 Strongyloidea
                                 Cyathostominea
Strongylidae
Cyathostominae

Cylicocyclus Ihle, 1922

Type species of the genus: Cylicocyclus radiatus (Looss, 1900) Chaves, 1930

Synonyms:

Cyathostomum Looss, 1900, in part

Cylicobrachtyus Cram, 1924, in part

Cylicostomum of Kotlan, 1921, in part

Schultztrichonema Ershov, 1943, in part

Trichonema of LeRoux, 1924, in part

Cylichnostomum of Boulenger, 1917, in part

 

List of synonymies per Lichtenfels et al., 1998

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Morphology and Anatomy:

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Female:  

Males:


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

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Distribution:

 

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Feeding:

Intestinal parasites of equids

 
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Biology and Ecology:

   
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Life Cycle:

Species of the Cyathostominae have a direct lifecycle, with no intermediate host.The third larval stage (L3) develops in feces deposited iin areas where animals are grazing. The ingested larval nematodes continue their maturation through subsequent sthegs to the adult and new eggs may be deposited in feces in 5-6 weeks.  Eggs hatch in the feces and larvae develpo to the third stage when they enter an apparent dauer stage surrounded by an extra protective cuticle. They are able to survive in the grazing area for prolonged periods. Once ingested, the encysted L3 nematodes may remain encysted in the intestinal wall for periods up to 2 years. In temperate climates, the nematodes tend to enter the dauer stage during cooler months while in tropical areas the dauer stage may be entered in the summer as a protection against heat (Corning, 2009).

For Ecophysiological Parameters for this genus, click 
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Ecosystem Functions and Services:

 

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Management:

Anthelminthic treatment schedule with rotation of drugs to delay development of parasite resistance to the medications.

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References:

Corning, S. 2009. Equine cyathostomins: a review of biology, clinical significance and therapy. Parasites & Vectors 2(Suppl. 2) S1 doi: 10.1186/1756-3305-2-S2-S1

Lichtenfels, J.R., Karchenko, V.A., Krecek, R.C., Gibbons, L.M. 1998. An annotated checklist by genus and species of 93 species level names for 51 recognized species of small strongyles (Nematoda: Strongyloidea: Cyathostominea) of horses, asses and zebras of the world. Veterinary Parasitology 79:65-79.

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Copyright © 1999 by Howard Ferris.
Revised: January 20, 2024.