Combining nuclear (nuDNA) and mitochondrial DNA (mtDNA) markers has improved the
power of molecular data to test phylogenetic and phylogeographic hypotheses and has …

Hybrid zones are 'natural laboratories' for studying the origin, maintenance and demise of
species. Theory predicts that hybrid zones can move in space and time, with significant …

The study of zones of secondary contact provides insight into the maintenance of
reproductive isolation. Tension zone theory supplies powerful tools for assessing how …

In this paper, we present results of the first comprehensive study of the introgression of both
autosomal and sex-chromosome markers across the central European portion of the hybrid …

This study characterizes a hybrid zone that spans a migratory divide between subspecies of
the Swainson's thrush (Catharus ustulatus), a long distance migratory songbird, in the Coast …

Behavioural isolation may lead to complete speciation when partial postzygotic isolation
acts in the presence of divergent‐specific mate‐recognition systems. These conditions exist …

Hybrid zones occur as range boundaries for many animal taxa. One model for how hybrid
zones form and stabilize is the tension zone model, a version of which predicts that hybrid …

Body size differences among coexisting related species are common, but the actual effect of
these differences in mitigating interspecific interactions, such as resource competition and …

The Japanese Islands have been largely isolated from the East Asian mainland since the
Early Pleistocene, allowing the diversification of endemic lineages. Here, we explore …

Speciation studies seek to clarify the origin of reproductive isolation, the various
mechanisms working from mate recognition through postzygotic stages. Asymmetric effects …