Would tropical climatic variations impact the genetic variability of triatomines: Rhodnius ecuadoriensis, principal vector of Chagas disease in Ecuador?

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dc.careerEscuela de Ciencias Biológicases
dc.category.authorprincipalen_US
dc.contributor.authorVillacis Salazar, Anita Gabriela
dc.contributor.authorYumiseva Marín, Cesar Alberto
dc.contributor.correspondingVillacis Salazar, Anita Gabriela
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:35:20Z
dc.date.available2023-11-04T21:35:20Z
dc.date.issued2009-09
dc.dedication.authorTCes
dc.description.abstractRhodnius ecuadoriensis is one of the most important vector species of Chagas disease in Ecuador. This species is distributed in the Central coast region and in the south Andean region, and an incipient speciation process between these geographical populations was previously proposed. The current population genetics study only focused on the Central coast region and analyzed 96 sylvatic specimens of R. ecuadoriensis associated with Phytelephas aequatorialis palm trees. We used Cytb and 16S-rRNA sequences and a Cytb-16S-rRNA concatenated set to explore (i) the genetic variability, spatial structuring, and demographic history of R. ecuadoriensis, and to determine (ii) the relationship between the genetic and climatic variabilities. A particularly high genetic variability was observed without detectable general genetic structure; only some terminal genetic clusters were observed. We did not observe isolation by geographical distance (IBD), and it is likely that ancient expansion occurred, according to Fs index and mismatch distribution for Cytb-16S-rRNA concatenated sequences. Hierarchical clustering showed that the current locality origins of the bugs were grouped into four bioclimatic clusters. Genetic and bioclimatic distances were not correlated, but some genetic clusters were associated with bioclimatic ones. The results showed an ancient evolution of the species in the region with a possible old expansion. The absence of spatial genetic structure could be due to climatic conditions (possible selection of singular genotypes) and to passive transportation of palms tree materials where R. ecuadoriensis are living.en_US
dc.facultyCiencias Exactas y Naturaleses
dc.id.author1706504535
dc.id.author1709331571
dc.id.type1
dc.identifier.doidoi.org/10.1016/j.actatropica.2020.105530
dc.identifier.issn0001-706X
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/5409
dc.identifier.urihttps://www.sciencedirect.com/science/article/abs/pii/S0001706X19315517?via%3Dihub
dc.indexed.databaseScimago Journal Rankes
dc.language.isoen
dc.list.authorsVillacís, A., Bustillos, J., Depickère, S., Sánchez, D., Yumiseva, C. et al
dc.magazine.pageRange1-20
dc.magazine.titleActa Tropicaes
dc.magazine.volumeChapter2009
dc.rightsOpenAccessen
dc.statepublisheden_US
dc.subjectEnfermedad de Chagases
dc.subjectEcuadores
dc.subjectClimatologíaes
dc.subjectEnfermedad de Chagas
dc.subjectEcuador
dc.subjectClimatología
dc.titleWould tropical climatic variations impact the genetic variability of triatomines: Rhodnius ecuadoriensis, principal vector of Chagas disease in Ecuador?en_US
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