The study of phenotypic evolution should be an integrative endeavor that combines different
approaches and crosses disciplinary and phylogenetic boundaries to consider complex …

Understanding if and how individuals and populations cope with environmental change is
an enduring question in evolutionary ecology that has renewed importance given the pace …

Lizard life-history characteristics vary widely among species and populations. Most authors
seek adaptive or phylogenetic explanations for life-history patterns, which are usually …

Why do males and females frequently differ so markedly in body size and morphology? Sex,
Size, and Gender Roles is the first book to investigate the genetic, developmental, and …

We approach conceptual issues in evolutionary biology from an endocrinological
perspective, noting that single hormones typically act on several target tissues and thereby …

This article, which focuses on hormones and the diverse effects they have on behavior and
physiology, raises evolutionary questions that hormonal studies appear especially well …

Hormones influence many aspects of organismal behavior, physiology, and morphology,
and thus hormones may lie at the root of many life-history trade-offs. By manipulating …

The proximal mechanisms determining social dominance are not well understood. We used
the highly territorial lizard A. cristatellus to test two main hypotheses:(1) that male social …

Perhaps the best way to determine whether and how traits of organisms are currently
adaptive is to alter them experimentally and compare the relative fitness of altered and …

SYNOPSIS. An organism's phenotype results from an interaction of environment and
genotype. Sex steroids play a role in translating sexual genotype into phenotype. The focus …