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Amanzougaghene N., Fenollar F., Davoust B., Djossou F., Ashfaq M., Bitam I., Raoult D., Mediannikov Oleg. (2019). Mitochondrial diversity and phylogeographic analysis of Pediculus humanus reveals a new Amazonian clade "F". Infection Genetics and Evolution, 70, 1-8. ISSN 1567-1348

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Lien direct chez l'éditeur doi:10.1016/j.meegid.2019.02.006

Titre
Mitochondrial diversity and phylogeographic analysis of Pediculus humanus reveals a new Amazonian clade "F"
Année de publication2019
Type de documentArticle référencé dans le Web of Science WOS:000462355300001
AuteursAmanzougaghene N., Fenollar F., Davoust B., Djossou F., Ashfaq M., Bitam I., Raoult D., Mediannikov Oleg.
SourceInfection Genetics and Evolution, 2019, 70, p. 1-8. ISSN 1567-1348
RésuméPediculus humanus is an obligate and highly intimate bloodsucking insect parasite of humans that has two ecotypes, head louse and body louse. This study analyzed genetic diversity at three mitochondrial genes (cytochrome b [cytb], cytochrome oxidase subunit 1 [cox1] and 12S ribosomal RNA [12S]) in 98 head lice collected from an isolated Native American population from the Wayampi community in Trois-Sauts, French Guiana. These results are integrated with all prior data of P. humanus (1402 cytb, 743 cox1 and 344 12S) from other parts of the world. The phylogenetic analysis revealed six highly divergent and well-supported monophyletic clades. Five clades corresponded to the previously recognized mitochondrial clades A, D, B, C and E, while the sixth (clade F) was novel, as it exhibited 5.4%, 3.7% and 3.6% divergence at cytb, cox1 and 12S, respectively, from its nearest neighbor clade B. Interestingly, the clade F has only been recovered in a few lice sequences from Mexico and Argentina, while it was the most common lineage in the Amazonian lice, which hints its association with the Native American region. Furthermore, Pediculus mjobergi, a New World monkeys' louse, which is thought to be transmitted to monkeys from the first humans that had reached the American continent thousands of years ago, also belonged to this clade, suggesting that this louse may not be a separate species but an evolutionary lineage of P. humanus. The discovery of new Amazonian clade F with the recovery of additional haplotypes within each of the five clades demonstrates that the levels of genetic diversity in P. humanus are higher than previously thought.
Plan de classementEntomologie médicale / Parasitologie / Virologie [052] ; Sciences fondamentales / Techniques d'analyse et de recherche [020]
Descr. géo.GUYANE FRANCAISE ; AMAZONIE
LocalisationFonds IRD [F B010075500]
Identifiant IRDfdi:010075500
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010075500

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