Given the important role that animal vocalizations play in mate attraction and resource defence, acoustic signals are expected to play a significant role in speciation. Most studies, however, have foc
Advertisement signals can convey information about a senderâs characteristics, such as body size. The reliability of signals, however, can be reduced when signal production is partially dependent on
Many species of males aggregate in large groups where they signal to attract females. These large aggregations create intense competition for mates, and the simultaneous signaling by many individuals
The evolution of elaborate signals can emerge from changes in anatomical signaling structures. In the male túngara frog, a simple advertisement call (‘whine’) can be ornamented facultatively with a su