Divergent natural selection has been shown to promote speciation in many taxa. However,
although divergent selection often initiates the process of speciation, it often fails to complete …

Speciation research during the last several decades has confirmed that natural selection
frequently drives the generation of new species. But how does this process generally unfold …

We present a framework distinguishing three principal controls of speciation rate: rate of
splitting, level of persistence, and length of speciation duration. We contend that discussions …

Speciation has been a major focus of evolutionary biology research in recent years, with
many important advances. However, some of the traditional organising principles of the …

Speciation has been a major focus of evolutionary biology research in recent years, with
many important advances. However, some of the traditional organising principles of the …

Species selection as a potential driver of macroevolutionary trends has been relegated to a
largely philosophical position in modern evolutionary biology. Fundamentally, species …

Explanations for taxonomic diversity in a particular clade often implicate evolutionary
innovations, possessed by members of the clade, that are thought to have favoured …

Concepts and definitions of species have been debated by generations of biologists and
remain controversial. Microbes pose a particular challenge because of their genetic …

Evolutionary biologists have often suggested that ecology is important in speciation, in that
natural selection may drive adaptive divergence between lineages that inhabit different …

The origin of species remains a central question, and recent research focuses on the role of
ecological differences in promoting speciation. Ecological differences create opportunities …