Since Darwin's conception of sexual selection theory, scientists have struggled to identify the
evolutionary forces underlying the pervasive differences between male and female …

Natural populations consist of phenotypically diverse individuals that exhibit variation in their
demographic parameters and intra-and inter-specific interactions. Recent experimental work …

Molluscs comprise the second largest phylum of animals (after arthropods), occurring in
virtually all habitats. Some are commercially important, a few are pests and some carry …

Sexual selection is a key component of evolutionary biology. However, from the very
formulation of sexual selection by Darwin, the nature and extent of sexual selection have …

Most empirical and theoretical studies of resource use and population dynamics treat
conspecific individuals as ecologically equivalent. This simplification is only justified if …

Parasites have evolved independently in numerous animal lineages, and they now make up
a considerable proportion of the biodiversity of life. Not only do they impact humans and …

The Ache, whose life history the authors recounts, are a small indigenous population of
hunters and gatherers living in the neotropical rainforest of eastern Paraguay. This is part …

It is widely agreed that fecundity selection and sexual selection are the major evolutionary
forces that select for larger body size in most organisms. The general, equilibrium view is …

Sexual size dimorphism (SSD) is common in both plants and animals, and current evidence
suggests that it reflects the adaptation of males and females to their different reproductive …

Greater than 70% of the world's amphibian species are in decline. We propose that there is
probably not a single cause for global amphibian declines and present a three-tiered …