Immunolabeling Provides Evidence for Subregions in the Songbird Nucleus Accumbens and Suggests a Context-Dependent Role in Song in Male European Starlings (Sturnus vulgaris).
Immunolabeling Provides Evidence for Subregions in the Songbird Nucleus Accumbens and Suggests a Context-Dependent Role in Song in Male European Starlings (Sturnus vulgaris).
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DOI：
10.1159/000521310
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Riters LV
中科院分区：
文献类型：
--
作者：
Polzin BJ;Heimovics SA;Riters LV
鸟鸣因其在繁殖季节吸引配偶的作用而闻名。然而，许多鸟类，包括欧洲椋鸟（Sturnus vulgaris），也会在繁殖季节之外作为大群的一部分唱歌。繁殖环境中的鸣叫可以通过配偶吸引力得到外在的奖励；然而，非繁殖群体中的鸣叫（这里称为群居鸣叫）不会产生明显的外在奖励，因此建议进行内在奖励。伏核（NAC）是众所周知的调节奖励和动机的大脑区域，这表明它是调节与群居歌曲相关的奖励的理想候选区域。本研究的目的是提供关于鸣禽 NAC 及其亚区域（喙极、核心和壳）的新组织化学信息，并开始确定亚区域对雄性椋鸟群居鸣叫的特定贡献。我们检查了 NAC 中酪氨酸羟化酶 (TH)、神经降压素和脑啡肽 (ENK) 的免疫标记。然后，我们检查了群居和性动机歌曲与 NAC 每个细分中立即早期基因 FOS 和 ZENK 的免疫标记差异相关的程度。我们发现八哥 NAC 子区域内的 TH 和 ENK 标记通常与哺乳动物和鸟类 NAC 核心和外壳中看到的模式相似。此外，我们发现在所有 NAC 分区中，群居歌曲（而非性动机歌曲）与 FOS 呈正相关。我们的观察结果为鸣禽 NAC 内的不同子区域提供了进一步的证据，并表明 NAC 可能在调节鸣禽群居鸣叫方面发挥着重要作用。
Birdsong is well known for its role in mate attraction during the breeding season. However, many birds, including European starlings (Sturnus vulgaris), also sing outside the breeding season as part of large flocks. Song in a breeding context can be extrinsically rewarded by mate attraction; however, song in non-breeding flocks, referred to here as gregarious song, results in no obvious extrinsic reward and is proposed to be intrinsically rewarded. The nucleus accumbens (NAC) is a brain region well-known to mediate reward and motivation, which suggests it is an ideal candidate to regulate reward associated with gregarious song. The goal of this study was to provide new histochemical information on the songbird NAC and its subregions (rostral pole, core, and shell), and to begin to determine subregion-specific contributions to gregarious song in male starlings. We examined immunolabeling for tyrosine hydroxylase (TH), neurotensin, and enkephalin (ENK) in NAC. We then examined the extent to which gregarious and sexually-motivated song differentially correlated with immunolabeling for the immediate early genes FOS and ZENK in each subdivision of NAC. We found that TH and ENK labeling within subregions of the starling NAC was generally similar to patterns seen in the core and shell of NAC in mammals and birds. Additionally, we found that gregarious song, but not sexually-motivated song, positively correlated with FOS in all NAC subregions. Our observations provide further evidence for distinct subregions within the songbird NAC and suggest the NAC may play an important role in regulating gregarious song in songbirds.
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影响因子：
2.8
作者：
Alger SJ;Juang C;Riters LV
通讯作者：
Riters LV
影响因子：
2.5
作者：
Gutierrez-Ibanez, Cristian;Iwaniuk, Andrew N.;Wylie, Douglas R.
通讯作者：
Wylie, Douglas R.
影响因子：
2.9
作者：
Heimovics, Sarah A.;Riters, Lauren V.
通讯作者：
Riters, Lauren V.
DOI：
10.1016/s0169-328x(03)00288-2
发表时间：
2003-08-19
期刊：
MOLECULAR BRAIN RESEARCH
影响因子：
--
作者：
Bailey, DJ;Wade, J
通讯作者：
Wade, J
影响因子：
3.5
作者：
Heimovics, Sarah A.;Riters, Lauren V.
通讯作者：
Riters, Lauren V.