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Cover image
Cover Image
Cover: Male túngara frogs (Physalaemus pustulosus) produce courtship calls that are accompanied by conspicuous vocal sac inflation (live male, top panel). Females assess male multimodal signals consisting of a call and vocal sac inflation, although the call is dominant. Using a robotic frog with an inflatable vocal sac (bottom two panels), Taylor et al. (pp. 815−820) showed that when the robofrog's vocal sac was inflated asynchronously with the call, females discriminated against the robofrog. This indicates that although the vocal sac is a secondary signal component, it can strongly modulate mate choice. Live frog photograph by Ryan Taylor, Robofrog photographs by Barrett Klein. 2 2 - PDF Icon PDF LinkTable of contents
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