Integration and modularity refer to the patterns and processes of trait interaction and
independence. Both terms have complex histories with respect to both conceptualization …

When it comes to fitting simple allometric slopes through measurement data, evolutionary
biologists have been torn between regression methods. On the one hand, there is the …

Relative brain size has long been considered a reflection of cognitive capacities and has
played a fundamental role in develo** core theories in the life sciences. Yet, the notion …

Relative brain sizes in birds can rival those of primates, but large-scale patterns and drivers
of avian brain evolution remain elusive. Here, we explore the evolution of the fundamental …

Metabolism is the link between ecology and physiology—it dictates the flow of energy
through individuals and across trophic levels. Much of the predictive power of metabolic …

Organismal functions are size-dependent whenever body surfaces supply body volumes.
Larger organisms can develop strongly folded internal surfaces for enhanced diffusion, but …

Allometric constraint is a product of natural selection and physical laws, particularly with
respect to body size and traits constrained by properties thereof, such as metabolism …

The magnitude of many biological traits relates strongly and regularly to body size.
Consequently, a major goal of comparative biology is to understand and apply these 'size …

Discovery of cryptic species using molecular tools has become common in many animal
groups but it is rarely accompanied by morphological revision, creating ongoing problems in …

Eye size affects many aspects of visual function, but eyes are costly to grow and maintain.
The allometry of eyes can provide insight into this trade-off, but this has mainly been …