Lake Malawi contains a flock of> 500 species of cichlid fish that have evolved from a
common ancestor within the last million years. The rapid diversification of this group has …

Rapid evolutionary radiations provide insight into the fundamental processes involved in
species formation. Here we examine the diversification of one such group, the cichlid fishes …

A gene tree is an evolutionary reconstruction of the genealogical history of the genetic
variation found in a sample of homologous genes or DNA regions that have experienced …

We propose a new mechanism for diversification of male nuptial–colour patterns in the
rapidly speciating cichlid fishes of Lake Victoria. Sympatric closely related species often …

The question of how genetic variation translates into organismal diversity has puzzled
biologists for decades. Despite recent advances in evolutionary and developmental …

Several models have been proposed to suggest how the evolution of sex-determining
mechanisms might contribute to speciation. Here, we describe the inheritance of sex in 19 …

Repeated evolution of the same phenotypic difference during independent episodes of
speciation is strong evidence for selection during speciation. More than 1,000 species of …

Water level fluctuations are important modulators of speciation processes in tropical lakes, in
that they temporarily form or break down barriers to gene flow among adjacent populations …

Studies on north temperate fish species indicate that new habitat availability following the
last ice sheet retreat has promoted ecological speciation in postglacial lakes. Extensive …

Rapid speciation can occur on ecological time scales and interfere with ecological
processes, resulting in species distribution patterns that are difficult to reconcile with …