Organisms use energy to grow and reproduce, so the processes of energy metabolism and
biological production should be tightly bound. On the basis of this tenet, we developed and …

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 …

Both sexual selection and natural selection can influence the form of dimorphism in
secondary sexual traits. Here, we used a comparative approach to examine the relative …

In territorial polygynous taxa, reproductive success reflects phenotypic variation. Using
Crotaphytus collaris, a sexually dimorphic lizard in which males use the head (ie, jaws and …

1. Morphological characteristics (snout-vent length, badge area, mass, limb and head
measures) and whole-animal performance capacities (sprint speed, acceleration capacity …

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 …

Background Most animal species display Sexual Size Dimorphism (SSD): males and
females consistently attain different sizes, most frequently with females being larger than …

The evolution of exaggerated structures that function as weapons in sexually dimorphic
species is often explained by intra-sexual selection related to male combat, as these …

Sexual size dimorphism (SSD) varies in animals from male biased to female biased. The
evolution of SSD is potentially influenced by a number of factors, such as territoriality …

Rensch's rule relates to a pattern whereby sexual size dimorphism is more female‐biased in
small‐sized species and more male‐biased in large‐sized ones. We collected literature and …