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

Coral reefs are renowned for their spectacular biodiversity and the close links between
fishes and corals. Despite extensive fossil records and common biogeographic histories, the …

Coevolution—reciprocal evolutionary change in interacting species driven by natural
selection—is one of the most important ecological and genetic processes organizing the …

The tools of molecular genetics have enormous potential for clarifying the nature and age of
species boundaries in marine organisms. Below I summarize the genetic implications of …

Here we present a review of how the study of the geographic distribution of genetic lineages
(phylogeography) has helped identify management units, evolutionary significant units …

Covering< 0· 1% of the ocean's surface, coral reefs harbour about one‐third of all marine
fishes or c. 5000 species. Allopatry (geographic isolation) is believed to be the primary mode …

The relative importance of factors that may promote genetic differentiation in marine
organisms is largely unknown. Here, contributions to population structure from a …

We studied the genetic diversity of a coral reef fish species to investigate the origin of the
differentiation. A total of 727 Acanthurus triostegus collected from 15 locations throughout …

A major challenge in evolutionary biology lies in explaining patterns of high species
numbers found in biodiversity hot spots. Tropical coral reefs underlie most marine hot spots …

Studies of speciation in the marine environment have historically compared broad‐scale
distributions and estimated larvel dispersal potential to infer the geographic barriers …