A comparative study of avian auditory brainstem responses: correlations with phylogeny and vocal complexity, and seasonal effects
A comparative study of avian auditory brainstem responses: correlations with phylogeny and vocal complexity, and seasonal effects
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DOI：
10.1007/s00359-002-0359-x
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发表时间：
2002-12-01
影响因子：
2.1
通讯作者：
Long, GR
中科院分区：
文献类型：
--
作者：
Lucas, JR;Freeberg, TM;Long, GR
我们对六种鸟类（绒毛啄木鸟、卡罗莱纳山雀、簇绒山雀、白胸nuthatches、家雀和欧洲椋鸟）的外周听觉系统进行了比较研究。这些物种在其声乐曲目的复杂性和频率特征方面有所不同。听觉生理措施收集麻醉鸟类使用听觉脑干反应宽带点击刺激。如果听觉脑干反应模式是遗传保守的，我们预测啄木鸟，麻雀和椋鸟是相对于其他物种的离群值，因为啄木鸟是在一个不同的订单（Piciformes），并在订单Passeriformes，麻雀和椋鸟是在不同的总家庭比nuthatches，山雀，和山雀。然而，nuthatches和啄木鸟有最简单的声乐曲目在这六个物种的最低频率。因此，如果听觉脑音反应与声音的复杂性相关，我们可以预测nuthatches和啄木鸟是相对于其他四个物种的离群值。我们的研究结果表明，听觉脑干反应措施在春季广泛相关的声音的复杂性，在某些情况下，发育。然而，由于物种特异性的季节变化，这些听觉脑干反应模式从春季转移到冬季。这些季节性变化表明成年鸟类听觉周边的可塑性。
We conducted a comparative study of the peripheral auditory system in six avian species (downy woodpeckers, Carolina chickadees, tufted titmice, white-breasted nuthatches, house sparrows, and European starlings). These species differ in the complexity and frequency characteristics of their vocal repertoires. Physiological measures of hearing were collected on anesthetized birds using the auditory brainstem response to broadband click stimuli. If auditory brainstem response patterns are phylogenetically conserved, we predicted woodpeckers, sparrows, and starlings to be outliers relative to the other species, because woodpeckers are in a different Order (Piciformes) and, within the Order Passeriformes, sparrows and starlings are in different Superfamilies than the nuthatches, chickadees, and titmice. However, nuthatches and woodpeckers have the simplest vocal repertoires at the lowest frequencies of these six species. If auditory brainstern responses correlate with vocal complexity, therefore, we would predict nuthatches and woodpeckers to be outliers relative to the other four species. Our results indicate that auditory brainstem responses measures in the spring broadly correlated with both vocal complexity and, in some cases, phylogeny. However, these auditory brainstem response patterns shift from spring to winter due to species-specific seasonal changes. These seasonal changes suggest plasticity at the auditory periphery in adult birds.