A venerable view of speciation is that reproductive isolation ultimately evolves from
contrasting selection pressures between populations exploiting different resource …

“Ecological” speciation occurs when reproductive isolation evolves as a consequence of
divergent selection between populations exploiting different resources or environments. We …

Natural selection plays a prominant role in most theories of speciation. Mayr (1963) and
others viewed selection as one of the causes of genetic divergence between allopatric …

According to the naturalists of the first half of this century, adaptive radiation is the outcome
of three ecological processes: phenotypic differentiation of populations by resource-based …

There is little evidence from nature that divergent natural selection is crucial to speciation.
However, divergent selection is implicated if traits conferring adaptation to alternative …

Detailed studies of reproductive isolation and how it varies among populations can provide
valuable insight into the mechanisms of speciation. Here we investigate how the strength of …

Reproductive isolation can evolve between species as a byproduct of adaptation to different
niches, through reinforcement, and by direct selection on mating preferences. We …

Three species of Darwin's Finches hybridize on the Galapagos island of Daphne Major. We
examined mating patterns to determine if hybrids exhibit mate preferences. Geospiza fortis x …

In this study we assessed whether sexual selection against hybrids contributes to
reproductive isolation between two sympatric stickleback species. The species are recently …

Des données géologiques et des données sur les allozymes indiquent que les Épinoches à
trois épines (complexe Gasterosteus aculeatus) des lacs de basse altitude du sud-ouest de …