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Isoenzymatic characterization of Phlebotomus ariasi and P. perniciosus of canine leishmaniasis foci from Eastern Pyrenean regions and comparison with other populations from Europe
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Isoenzymatic characterization of Phlebotomus ariasi and P. perniciosus of canine leishmaniasis foci from Eastern Pyrenean regions and comparison with other populations from Europe
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Isoenzymatic characterization of Phlebotomus ariasi and P. perniciosus of canine leishmaniasis foci from Eastern Pyrenean regions and comparison with other populations from Europe
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Journal Article
Isoenzymatic characterization of Phlebotomus ariasi and P. perniciosus of canine leishmaniasis foci from Eastern Pyrenean regions and comparison with other populations from Europe
2018
Overview
An entomological survey was carried out in 2007 in two Pyrenean counties of Lleida province (north-eastern Spain), where cases of autochthonous canine leishmaniasis have been recently reported. Phlebotomus ariasi and P. perniciosus , vectors of Leishmania infantum in the Mediterranean area, were captured. The aim of the present study was to compare these phlebotomine populations with others captured in known leishmaniasis foci in Europe. Populations of these species were studied by analysing the polymorphism of seven enzymatic systems (HK, PGI, PGM, MDH, 6PGD, FUM and ACO) and compared with other specimens from endemic regions of France, Italy, Malta, Portugal and Spain captured in other campaigns, and also with previously published results. Phlebotomus ariasi was more polymorphic than P. perniciosus . Only the ACO locus had diagnostic alleles, but some other alleles show high characteristic frequencies for each species. The neighbour-joining trees separated two population groups in both species. On the basis of the isoenzyme study results, sand fly populations of the Pyrenean region in Lleida province are closely related to those of other nearby leishmaniasis endemic regions in France and Spain. Une enquête entomologique a été réalisée en 2007 dans deux comtés pyrénéens de la province de Lleida (Nord-Est de l’Espagne), où des cas de leishmaniose canine autochtone ont été signalés récemment. Phlebotomus ariasi et P. perniciosus , vecteurs de Leishmania infantum dans la région méditerranéenne, ont été capturés. Le but de la présente étude était de comparer ces populations de phlébotomes avec d’autres capturées dans des foyers connus de leishmaniose en Europe. Les populations de ces espèces ont été étudiées en analysant le polymorphisme de sept systèmes enzymatiques (HK, PGI, PGM, MDH, 6PGD, FUM et ACO) et comparées avec d’autres spécimens de régions endémiques de France, Italie, Malte, Portugal et Espagne capturés dans d’autres campagnes, et aussi avec des résultats déjà publiés. Phlebotomus ariasi était plus polymorphe que P. perniciosus . Seul le locus ACO possède des allèles diagnostiques, mais certains allèles présentent des fréquences caractéristiques élevées pour chaque espèce. Les arbres produits par Neighbour-joining ont séparé deux groupes de populations chez les deux espèces. Sur la base des résultats de l’étude des isoenzymes, les populations de phlébotomes de la région pyrénéenne dans la province de Lleida sont étroitement liées à celles des autres régions endémiques de leishmaniose voisines en France et en Espagne.
