The neuroethology of frequency preferences in the spring peeper

Article Abstract:

The nonlinearity of the auditory system is underscored in a study of the relationship between auditory activity in the midbrain and selective phonotaxis in females of the treefrog Pseudacris crucifer. Using synthetic advertisement calls of varied frequencies, no significant preferences for calls of any frequency were found in the absence of background noise. With background noise, females preferred the standard call of 3500 Hz to one of either 2600 Hz or 4000 Hz. The natural and noisy acoustic environment was also found to have an effect on the auditory system's behavior and responses.

Physiological aspects, Behavior, Hearing

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Female choice and plasticity of male calling behaviour in the Pacific treefrog

Article Abstract:

A phonotaxic assay has been used to compare the responses of female Pacific treefrogs to playback of the advertisement and encounter calls of male Pacific treefrogs. This research was designed to test the hypothesis that female Pacific treefrogs prefer the advertisement call to the encounter call. All of the females that showed a phonotaxic response preferred the disphasic advertisement call to the encounter call. It is likely that females distinguish between calls on the basis of temporal cues.

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Within-male variability in call properties and female preference in the grey treefrog

Article Abstract:

The calls of male grey treefrogs have an array of acoustic properties both individually and across the species. They differ in variability and in their mean values. The female grey treefrogs can recognize differences between the calls of different males despite a wide within-male variability. They exhibit their preferences for low-variability calls which have a higher number of sound pulses per minute.

Observations, Sexual selection in animals, Sexual selection (Natural selection)

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