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Population structure and ancestry prediction of Aedes aegypti (Diptera: Culicidae) supports a single African origin of Colombian populations.

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  • Additional Information
    • Source:
      Publisher: Instituto Oswaldo Cruz Country of Publication: Brazil NLM ID: 7502619 Publication Model: eCollection Cited Medium: Internet ISSN: 1678-8060 (Electronic) Linking ISSN: 00740276 NLM ISO Abbreviation: Mem Inst Oswaldo Cruz Subsets: MEDLINE
    • Publication Information:
      Original Publication: Rio de Janeiro : Instituto Oswaldo Cruz
    • Subject Terms:
      Aedes*/genetics ; Dengue*; Animals ; Colombia ; Genetic Variation/genetics ; Humans ; Phylogeography
    • Abstract:
      Background: A previous phylogeographic study revealed two Aedes aegypti African-related mitochondrial lineages distributed in Colombian's cities with different eco-epidemiologic characteristics with regard to dengue virus (DENV). It has been proposed these lineages might indicate independent invasion sources.
      Objectives: Assessing to Colombian population structure and to support evidence of its probable source origin.
      Methods: We analysed a total of 267 individuals from cities of Bello, Riohacha and Villavicencio, which 241 were related to the West and East African mitochondrial lineages (termed here as WAL and EAL, respectively). Eight polymorphic microsatellite loci were analysed aiming population structure.
      Findings: Results indicate substantial gene flow among distant and low-connected cities composing a panmictic population with incipient local differentiation of Ae. aegypti is placed in Colombia. Likewise, genetic evidence indicates no significant differences among individuals related to WAL and EAL is placed.
      Main Conclusions: Minimal genetic differentiation in low-connected Ae. aegypti populations of Colombia, and lack concordance between mitochondrial and nuclear genealogies suggest that Colombian Ae. aegypti shared a common demographic history. Under this scenario, we suggest current Ae. aegypti population structure reflects a single origin instead of contemporary migration, which founding populations have a single source from a mitochondrial polymorphic African ancient.
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    • Publication Date:
      Date Created: 20210714 Date Completed: 20210716 Latest Revision: 20210721
    • Publication Date:
      20240105
    • Accession Number:
      PMC8279122
    • Accession Number:
      10.1590/0074-02760200441
    • Accession Number:
      34259736