The classification of reproductive isolating barriers laid out by Dobzhansky and Mayr has
motivated and structured decades of research on speciation. We argue, however, that this …

Contact zones exemplify a series of stages in speciation. In unimodal hybrid zones
intermediates predominate; in bimodal zones hybrids are rare and parental forms …

The genetic effects of pleistocene ice ages are approached by deduction from
paleoenvironmental information, by induction from the genetic structure of populations and …

Defining the impacts of anthropogenic climate change on biodiversity and species
distributions is currently a high priority. Niche models focus primarily on predicted changes …

As mitochondria are inherited in a matrilinear way, an animal hybrid contains the
mitochondrial DNA of its 'mother species'. Of 80 studies that analysed the mitochondrial DNA …

In the past, moment and likelihood methods have been developed to estimate the effective
population size (N e) on the basis of the observed changes of marker allele frequencies over …

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 …

This paper's theme is that analogies drawn from the cercopithecine tribe Papionini,
especially the African subtribe Papionina (baboons, mangabeys, and mandrills), can be a …

Habitat loss, together with less obvious land-use changes such as intensified farming
practice, can have significant adverse impacts on biodiversity. An important factor in …

Recent studies found major conflicts between traditional taxonomy and genetic
differentiation of grass snakes and identified previously unknown secondary contact zones …