Genetic structure of allopatric populations of Lutzomyia longipalpis sensu lato in Brazil

被引:8
|
作者
de Sousa-Paula, Lucas Christian [1 ]
da Silva, Lidiane Gomes [2 ]
da Silva Junior, Wilson Jose [3 ]
Santiago Figueiredo Junior, Carlos Alberto [2 ]
Nery Costa, Carlos Henrique [4 ]
Costa Pessoa, Felipe Arley [5 ]
Dantas-Torres, Filipe [1 ]
机构
[1] Oswaldo Cruz Fdn Fiocruz Pernambuco, Aggeu Magalhaes Inst, Dept Immunol, Lab Immunoparasitol, Ave Prof Moraes Rego,S-N, BR-50740465 Recife, PE, Brazil
[2] Ctr Univ Vale Ipojuca UNIFAVIP Wyden, Caruaru, PE, Brazil
[3] Univ Fed Pernambuco, Dept Genet, Lab Bioinformat & Evolutionary Biol, Recife, PE, Brazil
[4] Univ Fed Piaui, Lab Leishmaniasis, Teresina, Brazil
[5] Oswaldo Cruz Fdn FIOCRUZ, Leonidas & Maria Deane Inst, Lab Ecol & Doencas Transmissiveis Amazonia, Manaus, Amazonas, Brazil
关键词
Species complex; Phylogenetic inference; Period gene; Cryptic species; PERIOD GENE; COURTSHIP SONG; DIPTERA; NEIVA; LUTZ; DIVERGENCE;
D O I
10.1016/j.actatropica.2021.106031
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
Lutzomyia longipalpis sensu lato is a complex of phlebotomine sand fly species, which are widespread in the Neotropics. They have a great medico-veterinary importance due their role as vectors of Leishmania infantum, the causative agent of visceral leishmaniasis. Morphological variations of Lu. longipalpis s.l. males were reported in the late 1960s in Brazil. Male populations can present either one pair of spots on third abdominal tergites or two pairs on third and fourth ones, namely 1S and 2S phenotypes, respectively. Since then, there has been much interest on the taxonomic status of Lu. longipalpis s.l. Thereafter, several lines of evidence have been congruent in suggesting the existence of an uncertain number of cryptic species within Lu. longipalpis s.l. in Brazil. Herein, a 525 bp-fragment of the period gene was used for assessing the genetic structure and phylogenetic relationship of Lu. longipalpis s.l. populations in Brazil. We performed two set of analyses, first we originally sequenced three populations (Passira, Santare ' m and Teresina) of Lu. longipalpis s.l. and compared them. Thereafter, we performed global analysis including in our dataset other three pairs of sympatric populations of Lu. longipalpis s.l. from three Brazilian localities available in GenBank. Fixed single nucleotide polymorphisms (SNPs) sharing, maximum likelihood inference, genetic structure and haplotype analyses revealed the presence of two genetic groups, one composed of Teresina population, and the other encompassing Passira and Santare ' m populations. The global analysis reflected the first of its kind, and two prominent groups were observed: the clade I comprising Teresina 1S, Bodoc ' o 1S, Caririacu 1S and Sobral 1S; and the clade II encompassing Passira 2S, Santare ' m 1S, Bodoc ' o 2S, Caririacu 2S and Sobral 2S. Genetic differentiation data suggested a limited gene flow between populations of the clade I versus clade II. Our results disclosed the presence of two prominent genetic groups, which could reasonably represent populations of Lu. longipalpis s.l. whose males produce the same courtship song.
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页数:9
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