The elaboration and diversification of sexually selected weapons remain poorly understood.
We argue that progress in this topic has been hindered by a strong bias in sexual selection …

Animal colors play important roles in communication, ecological interactions and speciation.
Carotenoid pigments are responsible for many yellow, orange and red hues in animals …

The melanocortin system is a neuroendocrine system that regulates a range of physiological
and behavioural processes. We examined the extent to which the melanocortin system …

Research on the role of sexual selection in the speciation process largely focuses on the
diversifying role of mate choice. In particular, much attention has been drawn to the fact that …

Interspecific territoriality occurs when individuals of different species fight over space, and
may arise spontaneously when populations of closely related territorial species first come …

For many vertebrates, a single genetic locus initiates a cascade of developmental sex
differences in the gonad and throughout the organism, resulting in adults with two …

Discrete colour polymorphisms are often genetically correlated with other traits under natural
and sexual selection, such as behaviour, life history and physiology. Elucidating such …

Competition for mates can play a critical role in determining reproductive success, sha**
phenotypic variation within populations, and influencing divergence. Yet, studies of the role …

Mating behavior between recently diverged species in secondary contact can impede or
promote reproductive isolation. Traditionally, researchers focus on the importance of female …

Divergence in sexually selected traits in allopatry should affect the degree and direction of
hybridization. However, few studies have established the causes and targets of sexual …