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Parasite
Article . 2007
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ProdInra
Article . 2007
License: CC BY
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[Does 2003 summer heat wave modified prevalence of bovine helminthosis in southwestern France?].

Authors: Thomas, C; JACQUIET, Philippe; DORCHIES, Philippe;

[Does 2003 summer heat wave modified prevalence of bovine helminthosis in southwestern France?].

Abstract

La comparaison des résultats de 1 917 examens coproscopiques de bovins du midi toulousain montre qu’entre 2002 et 2003, la prévalence et le nombre moyen d’oeufs de grande douve, de paramphistomes, de petite douve et de strongles gastro-intestinaux ont significativement diminué. En revanche, dès l’année suivante, les niveaux parasitaires ont été restaurés. La discussion envisage les différents facteurs qui, à plus ou moins long terme, pourraient aboutir à une évolution durable de l’épidémiologie des helminthoses. Il s’agit d’une adaptation des souches de vers, d’une modification de l’écologie des hôtes intermédiaires et enfin d’un déplacement des hôtes ou des réservoirs. En bilan, un accident climatique comme celui de 2003 ne doit pas aboutir à un relâchement des mesures de lutte contre le parasitisme mais à leur adaptation en étudiant un nouveau calendrier des interventions.

The heat wave of 2003 summer had serious consequences on helminths prevalence and epidemiology. Comparison of 1,917 cattle epg counts in Southwestern France for years before and after showed that prevalence and mean numbers of Fasciola hepatica, paramphistomids, Dicrocoelium lanceolatum and gastrointestinal strongyles eggs were significantly reduced. Nevertheless, the next year the epg counts were quickly increasing. Several factors may have induced a more or less long modification: strains of helminths may become adapted, a new spreading of intermediate hosts may occur with a modified ecology and finally moving of hosts and reservoirs may be amongst causes of epidemiological changes. Finally, after a heat wave the anthelmintic pressure may be maintained, as parasites seem quickly become adapted to a novel and modified environment.

Keywords

Climate, Temperature, Cattle Diseases, Adaptation, Physiological, Feces, Helminths, Prevalence, Animals, Cattle, France, Helminthiasis, Animal, Parasite Egg Count

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
8
Average
Average
Average
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