Using a special acoustic camera, researchers from Dartmouth College have identified how individual songs in wood frog choruses influence mating. Male body size determines the audio frequency and physical size, along with social structures within a chorus, are believed to affect mating.
Females are generally attracted to songs in lower frequencies. They may expect to find certain male body types in choruses dominated by specific audio frequencies. “It seems that the chorus calls are used to attract the female wood frogs to a breeding site,” said lead researcher, Ryan Calsbeek. “The individual songs play a role in positioning the male frogs within that site, but it then becomes a physical showdown to decide who mates.”