@article{fdi:010079439, title = {{W}ould tropical climatic variations impact the genetic variability of triatomines : {R}hodnius ecuadoriensis, principal vector of {C}hagas disease in {E}cuador ?}, author = {{V}illacis, {A}. {G}. and {B}ustillos, {J}. {J}. and {D}epickere, {S}. and {S}anchez, {D}. and {Y}umiseva, {C}. {A}. and {T}roya-{Z}uleta, {A}. and {B}arnab{\'e}, {C}hristian and {G}rijalva, {M}. {J}. and {B}reni{\`e}re, {S}imone {F}r{\'e}d{\'e}rique}, editor = {}, language = {{ENG}}, abstract = {{R}hodnius ecuadoriensis is one of the most important vector species of {C}hagas disease in {E}cuador. {T}his species is distributed in the {C}entral coast region and in the south {A}ndean region, and an incipient speciation process between these geographical populations was previously proposed. {T}he current population genetics study only focused on the {C}entral coast region and analyzed 96 sylvatic specimens of {R}. ecuadoriensis associated with {P}hytelephas aequatorialis palm trees. {W}e used {C}ytb and 16{S}-r{RNA} sequences and a {C}ytb-16{S}-r{RNA} 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. {W}e did not observe isolation by geographical distance ({IBD}), and it is likely that ancient expansion occurred, according to {F}s index and mismatch distribution for {C}ytb-16{S}-r{RNA} concatenated sequences. {H}ierarchical clustering showed that the current locality origins of the bugs were grouped into four bioclimatic clusters. {G}enetic and bioclimatic distances were not correlated, but some genetic clusters were associated with bioclimatic ones. {T}he results showed an ancient evolution of the species in the region with a possible old expansion. {T}he 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.}, keywords = {{C}hagas disease ; {E}cuador ; {C}entral coast region ; {T}riatomine ; {C}limate variability ; {G}enetic variability ; {G}ene sequencing ; {EQUATEUR} ; {ANDES}}, booktitle = {}, journal = {{A}cta {T}ropica}, volume = {209}, numero = {}, pages = {art.105530 [9 p.]}, ISSN = {0001-706{X}}, year = {2020}, DOI = {10.1016/j.actatropica.2020.105530}, URL = {https://www.documentation.ird.fr/hor/fdi:010079439}, }