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

Snakes of both sexes display remarkable flexibility and diversity in their reproductive tactics.
Many features of reproduction in female snakes (such as reproductive mode and frequency …

Body condition can have important fitness consequences, but measuring body condition of
live animals from wild populations has been the subject of much recent debate. Using the …

In studies of animal ecology, it is fashionable to use the residuals from an ordinary least
squares (OLS) linear regression of body mass against a linear measure of size (the body …

Unlike most other large mammals, the Soay sheep population of Hirta in the St. Kilda
archipelago show persistent oscillations, sometimes increasing or declining by more than …

Destruction of habitat due to urban sprawl, pollution, and deforestation has caused
population declines or even extinction of many of the world's approximately 2,600 snake …

We used more than 326 000 observations of temperature collected by radio telemetry from
38 individuals over three years to investigate thermoregulation and thermal relations of …

Sexual size dimorphism (SSD) is widespread in almost every group of animals, generating
great scientific interest (Andersson 1994). Most research has been on species in which …

In many kinds of animals, larger males tend to defeat smaller rivals in bouts of physical
combat and may thereby enhance their mating opportunities. Does larger body size also …

Comme les fluctuations des réserves de graisses (embonpoint) affectent la survie et le
succès de la reproduction, les zoologistes ont souvent besoin d'estimer l'embonpoint des …