For almost 40 years, studies of whole-organism performance have formed a cornerstone of
evolutionary physiology. Although its utility as a heuristic guide is beyond question, and we …

Sexual selection operates by acting on variation in mating success. However, since
selection acts on whole‐organism manifestations (ie, performance) of underlying …

Australian lizards are a diverse group distributed across the continent and inhabiting a wide
range of environments. Together, they exhibit a remarkable diversity of reproductive …

1. While it is generally accepted that the evolution of morphological traits is mediated by
selection on whole-animal performance, few studies have examined how variation in …

1. Natural selection is generally thought to operate on organisms' maximal abilities to
perform ecological tasks in nature (ie whole-animal performance). However, selection may …

Questions: Does sexual selection operate on locomotor performance? Which taxa are likely
to have locomotor performance influenced by sexual selection? Methods: We reviewed …

To understand how selection acts on performance capacity, the ecological role of the
performance trait being measured must be determined. Knowing if and when an animal …

abstract We introduce a spectacular new specimen of a Late Triassic stem crocodilian
identified as Poposaurus gracilis. It is part of a poorly known group, Poposauroidea, that …

Ectotherms engage in behavioral thermoregulation to optimize body temperatures, however,
thermoregulatory effort varies across species, over time, and among habitats. Classic cost …

Males and females from several animal taxa differ in locomotor performance traits such as
sprinting and jum**. These performance dimorphisms may be explained at least partially …