Recent Secondary Contacts, Linked Selection, and Variable Recombination Rates Shape Genomic Diversity in the Model Species Anolis carolinensis
| Autor: | Stéphane Boissinot, Robert P. Ruggiero, Joseph D. Manthey, Yann Bourgeois |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Gene Flow
0106 biological sciences Gene Flow/genetics Genome evolution Anolis carolinensis Population selection 010603 evolutionary biology 01 natural sciences Anolis Selection Genetic/genetics Evolution Molecular Population genomics 03 medical and health sciences Genetics Animals Selection Genetic education Phylogeny Ecology Evolution Behavior and Systematics 030304 developmental biology Recombination Genetic 0303 health sciences education.field_of_study Genetic diversity Genome biology Genetic Variation Lizards Genomics Sequence Analysis DNA biology.organism_classification recombination Genomics/methods Population bottleneck Genetic Variation/genetics Evolutionary biology Genome/genetics Biological dispersal divergence Genetic isolate Research Article |
| Zdroj: | Genome Biology and Evolution Bourgeois, Y, Ruggiero, R P, Manthey, J D & Boissinot, S 2019, ' Recent secondary contacts, linked selection, and variable recombination rates shape genomic diversity in the model species Anolis carolinensis ', Genome Biology and Evolution, vol. 11, no. 7, pp. 2009-2022 . https://doi.org/10.1093/gbe/evz110 |
| ISSN: | 1759-6653 |
| DOI: | 10.1093/gbe/evz110 |
| Popis: | Gaining a better understanding on how selection and neutral processes affect genomic diversity is essential to gain better insights into the mechanisms driving adaptation and speciation. However, the evolutionary processes affecting variation at a genomic scale have not been investigated in most vertebrate lineages. Here, we present the first population genomics survey using whole genome resequencing in the green anole (Anolis carolinensis). Anoles have been intensively studied to understand mechanisms underlying adaptation and speciation. The green anole in particular is an important model to study genome evolution. We quantified how demography, recombination, and selection have led to the current genetic diversity of the green anole by using whole-genome resequencing of five genetic clusters covering the entire species range. The differentiation of green anole’s populations is consistent with a northward expansion from South Florida followed by genetic isolation and subsequent gene flow among adjacent genetic clusters. Dispersal out-of-Florida was accompanied by a drastic population bottleneck followed by a rapid population expansion. This event was accompanied by male-biased dispersal and/or selective sweeps on the X chromosome. We show that the interaction between linked selection and recombination is the main contributor to the genomic landscape of differentiation in the anole genome. |
| Databáze: | OpenAIRE |
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