Article
Morphological and phylogenetic analyses of Lutzomyia migonei from three Brazilian states
Registro en:
COSTA, Pietra Lemos; et al. Morphological and phylogenetic analyses of Lutzomyia migonei from three Brazilian states. Acta tropica, v.187, p.144-150, 2018.
0001-706X
10.1016/j.actatropica.2018.07.027
Autor
Costa, Pietra Lemos
Brazil, Reginaldo Peçanha
Fuzari, Andressa Alencastre
Latrofa, Maria Stefania
Annoscia, Giada
Tarallo, Viviana Domenica
Capelli, Gioia
Otranto, Domenico
Brandão Filho, Sinval Pinto
Torres, Filipe Dantas
Resumen
Lutzomyia migonei is incriminated as a vector of Leishmania braziliensis, the main causative agent of cutaneous leishmaniasis in Brazil. Recently, this phlebotomine sand fly species has been suggested as a vector for Leishmania infantum, which causes zoonotic visceral leishmaniasis. Considering the widespread distribution of Lu. migonei in South America, the existence of isolated populations has been hypothesized. Three Lu. migonei populations, two from north-eastern Brazil (Machados, Pernambuco State, and Baturité, Ceará State) and other from the south-eastern region (Niterói, Rio de Janeiro State) were analysed both morphologically and genetically. Though no significant morphological differences were found amongst the sand fly specimens analysed, discriminant analysis based on specific morphometric characters (i.e., length of wing, antennal segment 3 and coxite for males, and length of wing and antennal segment 3 for females), showed that specimens from Machados were closer to Baturité than to Niterói. The molecular analysis of cytochrome c oxidase subunit I gene sequences also supported this observation by the distinct separation of two monophyletic clades, grouping specimens from Machados and Baturité separately from those of Niterói. Our results suggest the existence of different populations within the distribution range of Lu. migonei. Whether these populations are reproductively isolated and/or present differences in terms of vector competence/capacity for L. braziliensis and L. infantum needs to be further investigated. 2030-01-01