The neural response of female zebra finches (Taeniopygia guttata) to conspecific, heterospecific, and isolate song depends on early-life song exposure
The neural response of female zebra finches (Taeniopygia guttata) to conspecific, heterospecific, and isolate song depends on early-life song exposure
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DOI：
10.1016/j.beproc.2017.12.022
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发表时间：
2019-06-01
影响因子：
1.3
通讯作者：
MacDougall-Shackleton, Scott A.
中科院分区：
文献类型：
--
作者：
Diez, Adriana;Cui, Alice;MacDougall-Shackleton, Scott A.
鸣禽听觉前脑区尾内侧巢皮层（NCM）和尾内侧中皮层（CMM）表现出不同的表达的立即早期基因ZENK响应不同的歌曲刺激的播放，并依赖于早期生活的听觉经验。类似地，歌曲偏好取决于听觉经验和对特定歌曲特征的未习得偏见。我们探讨了早期生活的听觉经验和类型的歌曲刺激对雌性斑胸草雀听觉前脑的Zenk反应的贡献。女性提出了三种不同的早期辅导条件：同种导师唱隔离歌曲，异种导师，或同种导师唱野生型歌曲。在成熟时，这些女性暴露于五种不同的播放条件之一：野生型的歌曲，孤立的歌曲，导师的歌曲，异源歌曲，或白色噪音。随后，测量CMM和NCM中ZENK免疫反应性细胞的数量。我们预测，鸟类暴露于同种歌曲在生命早期，并在歌曲播放在成年期，将有最高的神经反应。相反，我们发现Zenk响应在不同的播放条件下变化，对同种野生型和同种隔离歌曲的响应最高。此外，我们发现了辅导的主要影响，最低的整体Zenk响应在女性辅导男性唱孤立的歌曲。最重要的是，有一个显着的相互作用，女性辅导野生型同种或异种歌曲表现出类似的增加响应斑胸草雀歌曲（野生型或隔离），但女性辅导隔离歌曲没有表现出差异响应同种歌曲，只显示出升高Zenk响应特定的歌曲，他们辅导。结合，我们的研究结果表明，未习得的反应偏见同种歌曲元素依赖于以前的听觉经验。也就是说，早期经验似乎调节了先天偏见的表达。
The auditory forebrain regions caudo-medial nidopallium (NCM) and caudo-medial mesopallium (CMM) of songbirds exhibit differential expression of the immediate-early gene ZENK in response to playback of different song stimuli, and dependent on early-life auditory experience. Similarly, song preferences depend both on auditory experience and unlearned biases for particular song features. We explored the contributions of early-life auditory experience and the type of song stimuli on the Zenk response in the auditory forebrain of female zebra finches. Females were raised in three different early tutoring conditions: conspecific tutors that sang isolate song, heterospecific tutors, or conspecific tutors that sang wild-type song. At maturity, these females were exposed to one of five different playback conditions: wild-type song, isolate song, tutor song, heterospecific song, or white noise. Subsequently, the number of cells immunoreactive for ZENK in CMM and NCM was measured. We predicted that birds exposed to conspecific song early in life, and during the song playback in adulthood, would have the highest neural response. Instead, we found that the Zenk response varied across playback conditions with the highest response to conspecific wild-type and conspecific isolate song. In addition, we found a main effect of tutoring, with the lowest overall Zenk response in females tutored by males singing isolate song. Most importantly, there was a significant interaction in that females tutored by wild-type conspecific or heterospecific songs showed a similar increased response to zebra finch songs (wild-type or isolate), but females tutored by isolate song showed no differential response to conspecific song and only showed elevated Zenk response to the particular songs they were tutored with. Combined, our results indicate that unlearned response biases to conspecific song elements depend on previous auditory experience. That is, early experience appears to modulate the expression of innate biases.