Publications des scientifiques de l'IRD

Elbir H., FotsoFotso A., Diatta G., Trape Jean-François, Arnathau C., Renaud F., Durand P. (2015). Ubiquitous bacteria Borrelia crocidurae in Western African ticks Ornithodoros sonrai. Parasites and Vectors, 8, p. art. 477 [5 p.]. ISSN 1756-3305.

Titre du document
Ubiquitous bacteria Borrelia crocidurae in Western African ticks Ornithodoros sonrai
Année de publication
2015
Type de document
Article référencé dans le Web of Science WOS:000361456800022
Auteurs
Elbir H., FotsoFotso A., Diatta G., Trape Jean-François, Arnathau C., Renaud F., Durand P.
Source
Parasites and Vectors, 2015, 8, p. art. 477 [5 p.] ISSN 1756-3305
Background: In West Africa, tick-borne relapsing fever is a neglected arthropod-borne infection caused by Borrelia crocidurae transmitted by the argasid tick Ornithodoros sonrai. From an epidemiological point of view, it is of interest to know whether some genotypes of the vector are specialized in carrying certain genotypes of the pathogen. Findings: Thirty-five O. sonrai ticks collected in Mali, Senegal, Mauritania and Morocco confirmed to be B. crocidurae-infected, were genotyped by 16S rRNA gene sequencing. B. crocidurae was genotyped by Multispacer Sequence Typing. The 35 O. sonrai ticks grouped into 12 genotypes with strong geographical structuration. MST resolved the 35 B. crocidurae isolates into 29 genotypes with pairwise divergence of 0.09-1.56 % without strict geographical structuration as genotype ST22 was found in Mali, Senegal and Mauritania. There was no evidence of tick-borrelia specialization as one O. sonrai genotype carried several B. crocidurae genotypes and one B. crocidurae genotype was found in different O. sonrai genotypes. Conclusions: This report illustrates a non-specialized circulation of B. crocidurae borreliae within O. sonrai ticks in West Africa.
Plan de classement
Entomologie médicale / Parasitologie / Virologie [052]
Description Géographique
TUNISIE ; MAROC ; MAURITANIE ; SENEGAL ; MALI
Localisation
Fonds IRD [F B010065304]
Identifiant IRD
fdi:010065304
Contact