Extensive introgression among strongylocentrotid sea urchins revealed by phylogenomics.

ABSTRACT: Gametic isolation is thought to play an important role in the evolution of reproductive isolation in broadcast-spawning marine invertebrates. However, it is unclear whether gametic isolation commonly evolves early in the speciation process or only accumulates after other reproductive barriers are already in place. It is also unknown whether gametic isolation is an effective barrier to introgression following speciation. Here, we used whole-genome sequencing data and multiple complementary phylogenomic approaches to test whether the well-documented gametic incompatibilities among the strongylocentrotid sea urchins have limited introgression. We quantified phylogenetic discordance, inferred reticulate phylogenetic networks, and applied the Δ statistic using gene tree topologies recons

SUBMITTER: Glasenapp MR 

PROVIDER: S-EPMC10451471 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature