Evolutionary loss of traits is common over evolutionary time and occurs in diverse taxa.
Sexual signals and other non-signal traits should differ in their likelihood of becoming lost …

Gene flow is predicted to impede parallel adaptation via de novo mutation, because it can
introduce pre-existing adaptive alleles from population to population. We test this using …

Inadvertent cues can be refined into signals through coevolution between signalers and
receivers, yet the earliest steps in this process remain elusive. In Hawaiian populations of …

Evolutionary adaptation is generally thought to occur through incremental mutational steps,
but large mutational leaps can occur during its early stages. These are challenging to study …

Behavioural flexibility might help animals cope with costs of genetic variants under selection,
promoting genetic adaptation. However, it has proven challenging to experimentally link …

The mechanisms underlying rapid macroevolution are controversial. One largely untested
hypothesis that could inform this debate is that evolutionary reversals might release variation …

While the reproductive benefits of sexual displays have been widely studied, we have
relatively limited evidence of the fitness costs associated with most display traits. Insect …

The interaction effect coefficient ψ has been a much-discussed, fundamental parameter of
indirect genetic effect (IGE) models since its formal mathematical description in 1997. The …

Parallel evolution, in which independent populations evolve along similar phenotypic
trajectories, offers insights into the repeatability of adaptive evolution. Here, we revisit a …

Sexual selection can target many different types of traits. However, the relative influence of
different sexually selected traits during evolutionary divergence is poorly understood. We …