Widespread Introgression Across a Phylogeny of 155 Drosophila Genomes
Document Type
Article
Publication Date
1-10-2022
Publication Title
Current Biology
Volume
32
Issue
1
First page number:
111
Last page number:
123.e1–e5
Abstract
Genome-scale sequence data have invigorated the study of hybridization and introgression, particularly in animals. However, outside of a few notable cases, we lack systematic tests for introgression at a larger phylogenetic scale across entire clades. Here, we leverage 155 genome assemblies from 149 species to generate a fossil-calibrated phylogeny and conduct multilocus tests for introgression across 9 monophyletic radiations within the genus Drosophila. Using complementary phylogenomic approaches, we identify widespread introgression across the evolutionary history of Drosophila. Mapping gene-tree discordance onto the phylogeny revealed that both ancient and recent introgression has occurred across most of the 9 clades that we examined. Our results provide the first evidence of introgression occurring across the evolutionary history of Drosophila and highlight the need to continue to study the evolutionary consequences of hybridization and introgression in this genus and across the tree of life.
Keywords
Gene flow; Introgression; Phylogenetic discordance; Phylogenomics; Reticulate evolution
Disciplines
Biology and Biomimetic Materials | Life Sciences
Repository Citation
Suvorov, A.,
Kim, B. Y.,
Wang, J.,
Armstrong, E. E.,
Peede, D.,
D'Agostino, E.,
Price, D. K.,
Waddell, P.,
Lang, M.,
Courtier-Orgogozo, V.,
David, J.,
Petrov, D.,
Matute, D.,
Schrider, D.,
Comeault, A.
(2022).
Widespread Introgression Across a Phylogeny of 155 Drosophila Genomes.
Current Biology, 32(1),
111-123.e1–e5.
http://dx.doi.org/10.1016/j.cub.2021.10.052