Anja M. Westram

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: It is argued that the availability of promising technical and analytical methods will shed further light on the important roles that gene flow and divergent selection have in shaping the genomic landscape of speciation and proposes a road map for future speciation research.

TL;DR: De novo RAD‐sequencing was used to quantify the extent of shared genomic divergence associated with phenotypic similarities amongst ecotype pairs on three close islands connected by weak gene flow and with recent common ancestry, finding a low level of sharing suggests that parallel phenotypesic divergence in this system is not matched by shared genomic convergence despite a high probability of gene flowand standing genetic variation.

TL;DR: Investigation of differences in small-scale connectivity in terms of gene flow between populations of two ecologically important invertebrates with contrasting dispersal-related traits indicates that G. fossarum might be capable of dispersing overland in headwater regions and of crossing small in-stream barriers.

TL;DR: The genetic basis of parallel divergence in the marine snail Littorina saxatilis, which has repeatedly evolved coexisting ecotypes adapted to either crab predation or wave action, is asked and a polygenic basis of divergent traits might allow for multiple distinct molecular mechanisms generating the same phenotypic patterns.