The evolution of behavioral isolation is often the first step toward speciation. While past
studies show that behavioral isolation will sometimes evolve as a by-product of divergent …

Much of the diversity of life exists among species. Understanding the mechanisms by which
new species arise is therefore a fundamental goal in evolutionary biology. Central to this …

A. pair of replicate experiments was carried out to examine the role of habitat specialization
in the process of sympatric speciation. The rationale of the experimental design was that …

Speciation—the origin of new species—is the source of the diversity of life. A theory of
speciation is essential to link poorly understood macro-evolutionary processes, such as the …

Question: Host races of phytophagous insects originate when a population adapts to a novel
resource (host) while other populations remain resident on their ancestral host. The derived …

Speciation often involves the evolution of multiple genetic-based barriers to gene flow
(ie,“coupling”). However, barriers may exhibit a diversity of evolutionary interactions during …

Support for the role of sexual selection in speciation has grown over the last 30 years. Work
in this area, however, has largely focused on a single dominant question: when and how do …

Reinforcement is the process by which selection against hybridization leads to an increase
in reproductive isolation. The influence of reinforcing selection can be detected when …

In recent years, theoretical models have introduced the concept that ongoing hybridization
between “good” species can occur because incomplete reproductive isolation can be a …

Ecological processes are central to the formation of new species when barriers to gene flow
(reproductive isolation) evolve between populations as a result of ecologically‐based …