Highlights•Testosterone (T) is thought to integrate phenotypes that work well
together.•However, it is not clear how such integration is generated within the organism.•T …

In many vertebrates, courtship occurs through the performance of elaborate behavioral
displays that are as spectacular as they are complex. The question of how sexual selection …

Hormones and receptors coevolve to generate species diversity in hormone action. We
compared the structure and function of androgen receptors (ARs) across fishes, with a focus …

In recent decades, endocrinologists have increasingly adopted evolutionary methods and
perspectives to characterize the evolution of the vertebrate endocrine system and leverage it …

Organismal behavior, with its tremendous complexity and diversity, is generated by
numerous physiological systems acting in coordination. Understanding how these systems …

Like Darwin's tangled bank of biodiversity, the endocrine mechanisms that give rise to
phenotypic diversity also exhibit nearly endless forms. This tangled bank of mechanistic …

Sex steroids mediate the organization and activation of masculine reproductive phenotypes
in diverse vertebrate taxa. However, the effects of sex steroid action in this context vary …

Abstract Contribution to Special Issue on Fast effects of steroids. Sex steroid hormones act
during early development to shape the circuitry upon which these same hormones act in …

Many animals differentially express behaviours across the annual cycle as life stages are
coordinated with seasonal environmental conditions. Understanding of the mechanistic …

When selection favors a new relationship between a cue and a hormonally mediated
response, adaptation can proceed by altering the hormonal signal that is produced or by …