Many spectacular cases of biological diversity are associated with sexual selection, and
structures under sexual selection often show positive static allometry: they are …

Understanding variation in trait allometry and the drivers of variation in sexually selected
traits is a major theme in evolutionary biology. The static allometries of sexually selected …

Recent studies have called into question the idea that facial masculinity is a condition-
dependent male ornament that indicates immunocompetence in humans. We add to this …

Artificial selection offers a powerful tool for the exploration of how selection and
development shape the evolution of morphological scaling relationships. An emerging …

Once thought to be the magical horn of a unicorn, narwhal tusks are one of the most
charismatic structures in biology. Despite years of speculation, little is known about the tusk's …

What limits the size of nature's most extreme structures? For weapons like beetle horns, one
possibility is a tradeoff associated with mechanical levers: as the output arm of the lever …

The ability to quantify changes in the structural complexity of reefs and individual coral
colonies that build them is vital to understanding, managing, and restoring the function of …

Structures used in intrasexual competition span a continuum, with pure weapons that are
used exclusively in physical fights at one extreme and pure aggressive signals that are used …

A basic fluvio-dynamics process in the sediment-energy fluxes is channel meandering and
braiding. The construction of dams and barrages has primarily altered the meandering and …

Exaggerated weapons of sexual selection often diverge more rapidly and dramatically than
other body parts, suggesting that relevant agents of selection may be discernible in …