Seasonally inhibited development of cyathostomine nematodes in Shetland ponies in The Netherlands.
Abstract: Two groups of three yearling Shetland ponies were used in 1988 to study the epidemiological significance of inhibited development of the Cyathostomine nematodes. In Group 1, acquisition of infections was prevented throughout the grazing season whereas in Group 2 strongylid infections were acquired from the beginning of July until the end of September. Worm counts showed that the Cyathostomine nematode populations of Group 1 ponies mainly consisted of adult worms and those of Group 2 ponies of inhibited early third stage larvae (L3). These results indicate that a large proportion of Cyathostomine larvae which establish between the beginning of July and the end of September inhibit their development. The results also suggest that the pool of inhibited larvae which has overwintered in young ponies will be depleted in autumn.
Publication Date: 1990-07-01 PubMed ID: 2399646DOI: 10.1016/0304-4017(90)90037-cGoogle Scholar: Lookup
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- Journal Article
Summary
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This study examines how the development of Cyathostomine nematodes, a type of worm, is inhibited in certain months of the year in Shetland ponies in the Netherlands. The findings suggest that the larvae of these worms postpone their development if they establish between July and September, with the pool of these inhibited larvae depleted by autumn.
Introduction to the Research
- The research was conducted on two groups of three-year-old Shetland ponies in the Netherlands in 1988. The aim was to understand the impact of the inhibited development of Cyathostomine nematodes, a type of parasitic worm prevalent among equine populations.
Methodology
- In the first group of ponies, infections were prevented throughout the grazing season, which served as a control group.
- In the second group, the ponies were allowed to get infected with the strongylid nematodes, parasites related to Cyathostomine, from the start of July until the end of September.
- Worm counts were used as a primary measure of the development and infection progression of these parasites.
Findings
- Upon comparing the worm counts of the two groups, it was discovered that the population of Cyathostomine nematodes in the first group predominately composed of adult worms. In contrast, the second group mostly comprised early third-stage larvae (L3) of the worm, whose development was inhibited.
- The researchers found that a significant proportion of Cyathostomine larvae that establish between the beginning of July and the end of September pause their development. This suggests that the seasonal environment influences the life cycle of these nematodes.
- The study also put forth that the body of inhibited larvae, i.e., those that have paused their development during winter, gets significantly decreased by autumn.
Conclusion
- The study provides insights into the life cycle of Cyathostomine nematodes in Shetland ponies, indicating a clear pattern of seasonal inhibited development. This understanding is crucial for developing strategic control measures against these parasites.
Cite This Article
APA
Eysker M, Boersema JH, Kooyman FN.
(1990).
Seasonally inhibited development of cyathostomine nematodes in Shetland ponies in The Netherlands.
Vet Parasitol, 36(3-4), 259-264.
https://doi.org/10.1016/0304-4017(90)90037-c Publication
Researcher Affiliations
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, University of Utrecht, The Netherlands.
MeSH Terms
- Animals
- Feces / parasitology
- Female
- Horses
- Netherlands / epidemiology
- Parasite Egg Count / veterinary
- Random Allocation
- Seasons
- Strongyle Infections, Equine / epidemiology
- Strongyle Infections, Equine / parasitology
- Strongyloidea / growth & development
Citations
This article has been cited 6 times.- Elghryani N, McOwan T, Mincher C, Duggan V, de Waal T. Estimating the Prevalence and Factors Affecting the Shedding of Helminth Eggs in Irish Equine Populations.. Animals (Basel) 2023 Feb 7;13(4).
- Jürgenschellert L, Krücken J, Bousquet E, Bartz J, Heyer N, Nielsen MK, von Samson-Himmelstjerna G. Occurrence of Strongylid Nematode Parasites on Horse Farms in Berlin and Brandenburg, Germany, With High Seroprevalence of Strongylus vulgaris Infection.. Front Vet Sci 2022;9:892920.
- Walshe N, Mulcahy G, Hodgkinson J, Peachey L. No Worm Is an Island; The Influence of Commensal Gut Microbiota on Cyathostomin Infections.. Animals (Basel) 2020 Dec 5;10(12).
- Tydén E, Jansson A, Ringmark S. Parasites in Horses Kept in A 2.5 Year-Round Grazing System in Nordic Conditions without Supplementary Feeding.. Animals (Basel) 2019 Dec 17;9(12).
- Getachew M, Feseha G, Trawford A, Reid SW. A survey of seasonal patterns in strongyle faecal worm egg counts of working equids of the central midlands and lowlands, Ethiopia.. Trop Anim Health Prod 2008 Dec;40(8):637-42.
- Traversa D, Iorio R, Klei TR, Kharchenko VA, Gawor J, Otranto D, Sparagano OA. New method for simultaneous species-specific identification of equine strongyles (nematoda, strongylida) by reverse line blot hybridization.. J Clin Microbiol 2007 Sep;45(9):2937-42.
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