Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/14728
Registro completo de metadados
Campo DCValorIdioma
dc.contributor.authorScarpassa, Vera Margarete-
dc.contributor.authorAlencar, Ronildo Baiatone-
dc.date.accessioned2020-04-24T17:01:00Z-
dc.date.available2020-04-24T17:01:00Z-
dc.date.issued2012-
dc.identifier.urihttps://repositorio.inpa.gov.br/handle/1/14728-
dc.description.abstractBackground: Lutzomyia umbratilis is an important Leishmania guyanensis vector in South America. Previous studies have suggested differences in the vector competence between L. umbratilis populations situated on opposite banks of the Amazonas and Negro Rivers in the central Amazonian Brazil region, likely indicating a species complex. However, few studies have been performed on these populations and the taxonomic status of L. umbratilis remains unclear. Methodology/Principal Findings: Phylogeographic structure was estimated for six L. umbratilis samples from the central Amazonian region in Brazil by analyzing mtDNA using 1181 bp of the COI gene to assess whether the populations on opposite banks of these rivers consist of incipient or distinct species. The genetic diversity was fairly high and the results revealed two distinct clades (= lineages) with 1% sequence divergence. Clade I consisted of four samples from the left bank of the Amazonas and Negro Rivers, whereas clade II comprised two samples from the right bank of Negro River. No haplotypes were shared between samples of two clades. Samples within clades exhibited low to moderate genetic differentiation (FST = -0.0390-0.1841), whereas samples between clades exhibited very high differentiation (FST = 0.7100-0.8497) and fixed differences. These lineages have diverged approximately 0.22 Mya in the middle Pleistocene. Demographic expansion was detected for the lineages I and II approximately 30,448 and 15,859 years ago, respectively, in the late Pleistocene. Conclusions/Significance: The two genetic lineages may represent an advanced speciation stage suggestive of incipient or distinct species within L. umbratilis. These findings suggest that the Amazonas and Negro Rivers may be acting as effective barriers, thus preventing gene flow between populations on opposite sides. Such findings have important implications for epidemiological studies, especially those related to vector competence and anthropophily, and for vector control strategies. In addition, L. umbratilis represents an interesting example in speciation studies. © 2012 Scarpassa, Alencar.en
dc.language.isoenpt_BR
dc.relation.ispartofVolume 7, Número 5pt_BR
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Brazil*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/br/*
dc.subjectDna, Mitochondrialen
dc.subjectCladisticsen
dc.subjectCytochrome Oxidase Subunit I Geneen
dc.subjectGeneen
dc.subjectGene Flowen
dc.subjectGenetic Variabilityen
dc.subjectHaplotypeen
dc.subjectLeishmaniaen
dc.subjectLutzomyiaen
dc.subjectLutzomyia Umbratilisen
dc.subjectNonhumanen
dc.subjectNucleotide Sequenceen
dc.subjectPhylogeographyen
dc.subjectPleistoceneen
dc.subjectPopulation Structureen
dc.subjectRiparian Ecosystemen
dc.subjectSpecies Differentiationen
dc.subjectAnimalssen
dc.subjectDna, Mitochondrialen
dc.subjectGene Frequencyen
dc.subjectGenetic Variationen
dc.subjectHaplotypesen
dc.subjectInsect Vectorsen
dc.subjectLeishmania Guyanensisen
dc.subjectMolecular Sequence Dataen
dc.subjectPhylogenyen
dc.subjectPhylogeographyen
dc.subjectPsychodidaeen
dc.subjectLeishmania Guyanensisen
dc.subjectLutzomyia Umbratilisen
dc.subjectMyaen
dc.titleLutzomyia umbratilis, the main vector of leishmania guyanesis, represents a novel species complex?en
dc.typeArtigopt_BR
dc.identifier.doi10.1371/journal.pone.0037341-
dc.publisher.journalPLoS ONEpt_BR
Aparece nas coleções:Artigos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
artigo-inpa.pdf932,77 kBAdobe PDFThumbnail
Visualizar/Abrir


Este item está licenciada sob uma Licença Creative Commons Creative Commons