Many animal species segregate by sex. Such segregation may be social in nature, or
ecological, or both. Grey seals (Halichoerus grypus), like many large mammals, are sexually …

Abstract Theory predicts a trade-off between investments in precopulatory (ornaments and
armaments) and postcopulatory (testes and ejaculates) sexual traits due to the costs …

Sexual differences in body size are widespread among animals, and various explanations
for the evolution and maintenance of sexual size dimorphism have been proposed. We …

Sex differences in selection arise for at least two possible reasons:(1) differences originating
from anisogamy—the Darwin-Bateman paradigm—and (2) competition-driven ecological …

Bustards vary considerably in sexual size dimorphism (SSD), ranging from reversed-
dimorphic species (ie male< female) through monomorphic species to species in which an …

Seabirds exhibit a range of sexual size dimorphism (SSD) that includes both male‐biased
(males> females) and female‐biased SSD (males< females). Here we use phylogenetic …

Although critical for enabling in-depth evolutionary, ecological, or conservation-orientated
studies, taxonomic knowledge is still scarce for many groups of organisms, including …

Odonata (dragonflies and damselflies) exhibit a range of sexual size dimorphism (SSD) that
includes species with male‐biased (males> females) or female‐biased SSD (males< …

Bite force is often used as a predictive indicator of an animal's feeding ecology, although the
premise that there is a direct link between diet and cranial morphology can be difficult to test …

The evolution and maintenance of sexual dimorphism has long been attributed to sexual
selection. Niche divergence, however, serves as an alternative but rarely tested selective …