The paradox of hearing at the lek: auditory sensitivity increases after breeding in female gray treefrogs (Hyla chrysoscelis)

摘要: Both behavioral receptivity and neural sensitivity to acoustic mate attraction signals vary across the reproductive cycle, particularly in seasonally breeding animals. Across a variety of taxa increases, as does peripheral auditory sensitivity, females transition from non-breeding condition. We recently documented decreases circulating hormone levels, but an increase call-like stimuli following oviposition Cope’s gray treefrogs (Hyla chrysoscelis). However, it is not known if changes are confined frequency range calls, or they result more generalized periphery. Here, we used brainstem responses (ABRs) evaluate female before after oviposition. found lower ABR thresholds, greater amplitudes, shorter latencies Changes were most pronounced consistent at frequencies associated with amphibian papilla, also detectable higher corresponding tuning basilar papilla. Furthermore, only correlated steroid hormones (testosterone). processing may metabolic function sensorineural adaptation chorus noise.