Simon H. Martin

TL;DR: It is inferred that closely related Heliconius species exchange protective colour-pattern genes promiscuously, implying that hybridization has an important role in adaptive radiation.

TL;DR: Emergent trends and gaps in understanding are identified, new approaches to more fully integrate genomics into speciation research are proposed, and an integrative definition of the field of speciation genomics is provided.

TL;DR: Overall these results show that species divergence can occur in the face of persistent and genome-wide admixture over long periods of time.

TL;DR: It is found that D is unreliable in this situation as it gives inflated values when effective population size is low, causing D outliers to cluster in genomic regions of reduced diversity, and a related statistic f^d is proposed, a modified version of a statistic originally developed to estimate the genome-wide fraction of admixture.

TL;DR: This work describes the variation in genealogical relationships across the genome among three species of Heliconius butterflies, and shows that rates of introgression are predicted by variation in recombination rate, implying that species barriers are highly polygenic, with selection acting against introgressed alleles across most of the genome.