Two symmetric matrices underlie our understanding of microevolutionary change. The first is
the matrix of nonlinear selection gradients (γ) which describes the individual fitness surface …

Behavior is rapidly flexible and highly context-dependent, which poses obvious challenges
to researchers attempting to dissect its causes. However, over a century of unresolved …

Interactions among conspecifics influence social evolution through two distinct but intimately
related paths. First, they provide the opportunity for indirect genetic effects (IGEs), where …

Deciphering the genetic and neurobiological underpinnings of social behavior is a difficult
task. Simple model organisms such as C. elegans, Drosophila, and social insects display a …

The insect integument is covered by cuticular hydrocarbons (CHCs) which provide
protection against environmental stresses, but are also used for communication. Here we …

Mating preferences are common in natural populations, and their divergence among
populations is considered an important source of reproductive isolation during speciation …

Humans tend to form social relationships with others who resemble them. Whether this
sorting of like with like arises from historical patterns of migration, meso-level social …

Chemical communication mediates social interactions in insects [1]. For the fruit fly, D.
melanogaster, the chemical display is a key fitness trait because it leads to mating. An …

Aggressive behaviours are necessarily expressed in a social context, such that individuals
may be influenced by the phenotypes, and potentially the genotypes, of their social partners …

Although divergent natural selection is common in nature, the extent to which genetic
constraints bias evolutionary trajectories in its presence remains largely unknown. Here we …