Freshwater fish have been widely introduced worldwide, and freshwater ecosystems are
among those most affected by biological invasions. Consequently, freshwater fish invasions …

Hybridization is an evolutionary phenomenon that has fascinated biologists for centuries.
Prior to the advent of whole-genome sequencing, it was clear that hybridization had played …

Introgression can be an important source of new alleles for adaption under rapidly changing
environments, perhaps even more important than standing variation. Though introgression …

Phylogenomics has revealed the remarkable frequency with which introgression occurs
across the tree of life. These discoveries have been enabled by the rapid growth of methods …

Introgression is emerging as an important source of novel genetic variation, alongside
standing variation and mutation. It is adaptive when such introgressed alleles are …

The species problem has triggered the publication of an almost infinite number of theoretical
and practical studies, including quite a number of books. I should, therefore, perhaps briefly …

Introductions of non‐native freshwater fish continue to increase globally, although only a
small proportion of these introductions will result in an invasion. These invasive populations …

Analyses of genome sequence data have revealed pervasive interspecific gene flow and
enriched our understanding of the role of gene flow in speciation and adaptation. Inference …

With the advent of the Anthropocene, biological invasions have reached an unprecedented
level, and the number of species introductions is still increasing in an ever‐changing world …

The study of reproductive isolation and species barriers frequently focuses on mitochondrial
genomes and has produced two alternative and almost diametrically opposed narratives. On …