Does sexual dimorphism vary by population? Laryngeal and ear anatomy in cricket frogs.

Acoustic communication in many anuran species can show the effects of both natural and sexual selection. This is reflected in the sexually dimorphic anatomy of the larynx and ear structures, as well as the allometric relationship of these morphological traits to head or body size. In this study, we examined laryngeal and ear structures of cricket frogs not only as sexually dimorphic characteristics, but also as they differ across populations in environmentally different habitats.