Neuronal activation in female budgerigars is localized and related to male song complexity
Neuronal activation in female budgerigars is localized and related to male song complexity
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DOI：
10.1046/j.1460-9568.2003.02414.x
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发表时间：
2003-01-01
影响因子：
3.4
通讯作者：
Kimura, T
中科院分区：
文献类型：
--
作者：
Eda-Fujiwara, H;Satoh, R;Kimura, T
一些鸣禽物种的雌性已经被证明对更复杂的鸣叫声有优先反应。雄性虎皮鹦鹉（Melopsittacus undulatus）唱着复杂的歌曲，由离散的成分组成，称为音节。我们让雌性虎皮鹦鹉听标准的雄性鸣声，复杂的鸣声，或简单的鸣声，只有一个音节的重复（无论是频率调制的还是非频率调制的）。利用免疫细胞化学，我们分析了直接早期基因ZENK蛋白产物在多个前脑区域的表达。歌曲刺激引起的Zenk蛋白表达水平在各脑区之间存在差异。在尾侧新纹状体（NCM）中表达量最高，在尾侧腹侧高纹状体（CMHV）中表达量较低，在海马中表达量最低。歌曲复杂性对NCM中zenk免疫反应细胞的数量有显著影响，但对海马没有影响。Zenk蛋白的表达与雌性小鼠在NCM和CMHV中接触到的不同音节的数量呈显著正相关，而在海马中则无显著正相关。对于NCM，这种相关性在暴露于自然歌的组中也很显著。这些结果表明，NCM参与了雌性虎皮鹦鹉对歌曲复杂性的感知。
Females of several songbird species have been shown to respond preferentially to a more complex song. The male budgerigar (Melopsittacus undulatus) sings complex songs consisting of discrete components, known as syllables. We exposed female budgerigars to either standard male song, complex song, or simple song, the iteration of only one syllable (either frequency-modulated or unmodulated). Using immunocytochemistry, we analysed the expression of the protein product of the immediate early gene ZENK in a number of forebrain regions. The level of Zenk protein expression caused by song stimuli varied among each of the brain regions. Expression was highest in the caudomedial neostriatum (NCM), lower in the caudomedial hyperstriatum ventrale (CMHV), and lowest in the hippocampus. There was a significant effect of song complexity on the number of Zenk-immunoreactive cells in the NCM, but not in the hippocampus. Zenk protein expression correlated significantly and positively with the number of different syllables to which the females were exposed in the NCM and to a lesser extent in the CMHV, but not in the hippocampus. For the NCM this correlation was also significant within the group exposed to natural song. These results suggest that the NCM is involved in the perception of song complexity in female budgerigars.