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Home / Equine Research Bank / Vet Parasitol / Prevalence, abundance and site distribution of equine small ...
Veterinary parasitology2002; 110(1-2); 77-83; doi: 10.1016/s0304-4017(02)00328-x

Prevalence, abundance and site distribution of equine small strongyles in Normandy, France.

Abstract: Forty-two horses from Normandy (France) were examined post-mortem for small strongyle infections from October to March. In the positive horses, total worm numbers ranged from 234 to 90,247 (mean 11,297). Encysted larvae represented the major part of the total cyathostome burdens with a high percentage (83%) being early third stage larvae. They were mostly recovered from the caecum (48%) and ventral colon (40%) and were less present in the dorsal colon (12%). Adult cyathostomes were mainly located in the ventral colon (64%) and less frequently in the dorsal colon (27%) and caecum (9%). Twenty species of Cyathostominae were identified. The 10 most prevalent species (in sequence of prevalence) were Cyathostomum coronatum, Cylicocyclus nassatus, Cylicocyclus insigne, Cyathostomum catinatum, Cylicostephanus goldi, Poteriostomum imparidentatum, Cyathostomum labiatum, Cylicocyclus ultrajectinus, Cylicostephanus calicatus and Cylicostephanus minutus which comprised 84% of the total adult population. Twelve species showed a site preference in the ventral colon, five in the dorsal colon and only one in the caecum while two species were collected in nearly equal numbers from the ventral and dorsal colon. The number of species per horse ranged from 1 to 12 with a median of 5. Infections with singletons occurred in 12.5% of the positive horses while multiple infections were encountered in 87.5%. A positive correlation was found between the intensity of cyathostome infection and its diversity, measured either by the number of occurring species or Shanon indexes.
Copyright 2002 Elsevier Science B.V.
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Publication Date: 2002-11-26 PubMed ID: 12446091DOI: 10.1016/s0304-4017(02)00328-xGoogle Scholar: Lookup
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Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

This study examines the prevalence, abundance, and distribution of small strongyle infections in horses in Normandy, France. It found a high prevalence of these infections, with various species of the parasite showing particular preferences for different parts of the horse’s digestive system.

Methodology and Findings

  • Forty-two horses in Normandy, France were inspected for small strongyle (a type of parasitic worm) infections after death. The study was carried out during the cooler months, from October to March.
  • The examined horses that tested positive were found to have total small strongyle counts ranging from 234 to an astounding 90,247, with an average of around 11,297.
  • A large portion (83%) of the cyathostome burdens – a subgroup of small strongyles – were found to be early third-stage larvae.
  • The majority of these larvae were observed in the caecum (48%) and the ventral colon (40%) of the horses, while a smaller portion was located in the dorsal colon (12%).
  • Adult cyathostomes were primarily encountered in the ventral colon (64%) and less frequently found in the dorsal colon (27%) and the caecum (9%).

Species Variation and Distribution

  • Twenty distinct species of Cyathostominae, which is a subfamily of small strongyles, were identified.
  • The ten most common species in order of their prevalence were: Cyathostomum coronatum, Cylicocyclus nassatus, Cylicocyclus insigne, Cyathostomum catinatum, Cylicostephanus goldi, Poteriostomum imparidentatum, Cyathostomum labiatum, Cylicocyclus ultrajectinus, Cylicostephanus calicatus and Cylicostephanus minutus. These ten species comprised 84% of the entire adult population observed.
  • Of these, twelve species demonstrated a preference for the ventral colon, five favoured the dorsal colon, only one preferred the caecum, and two species were detected, in nearly equal numbers, in both the ventral and dorsal colons.

Extent of Infection and its Implications

  • The count of Cyathostominae species encountered in each horse ranged from 1 to 12, with a median of 5 species. This variability suggests a wide range of potential combinations of species within a single host.
  • Single species infections were found in 12.5% of the infected horses, while multiple species infections were more common, found in 87.5% of cases.
  • The study indicated a positive correlation between the intensity of cyathostome infection and the diversity of species present, which was measured by both the number of different species and the Shannon index, a measure of diversity within a community.

Cite This Article

APA
Collobert-Laugier C, Hoste H, Sevin C, Dorchies P. (2002). Prevalence, abundance and site distribution of equine small strongyles in Normandy, France. Vet Parasitol, 110(1-2), 77-83. https://doi.org/10.1016/s0304-4017(02)00328-x

Publication

Veterinary parasitology
ISSN: 0304-4017
NlmUniqueID: 7602745
Country: Netherlands
Language: English
Volume: 110
Issue: 1-2
Pages: 77-83

Researcher Affiliations

Collobert-Laugier, C
  • Afssa Site de Dozulé, Laboratoire d'Etudes et de Recherches en Pathologie Equine, 14430 Goustranville, France. c.collobert@dozule.afssa.fr
Hoste, H
    Sevin, C
      Dorchies, P

        MeSH Terms

        • Animals
        • Cecum / parasitology
        • Colon / parasitology
        • France / epidemiology
        • Horses
        • Prevalence
        • Strongyle Infections, Equine / epidemiology
        • Strongyle Infections, Equine / parasitology
        • Strongyloidea / isolation & purification

        Citations

        This article has been cited 18 times.
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