Sensory pathways linking social and environmental cues to endocrine control regions of amphibian forebrains.
Sensory pathways linking social and environmental cues to endocrine control regions of amphibian forebrains.
复制标题
将社会和环境线索与两栖动物前脑的内分泌控制区域联系起来的感觉通路。
DOI：
10.1159/000114159
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Marler,CA
中科院分区：
文献类型：
--
作者：
Wilczynski,W;Allison,JD;Marler,CA
促性腺激素释放激素（GnRH）和性类固醇的分泌受同种动物产生的社会信号和环境线索（如白天长度）的影响。因此，处理这些不同信号的感觉系统必须与视前区和下丘脑的GnRH控制中心联系起来。青蛙的前脑通路为脊椎动物如何实现这一点提供了一个模型。听觉信息通过丘脑核团和中脑核团到达视前区和下丘脑腹侧核团，传递蛙类生殖社会行为中所使用的声音交流信号的特征。对这些听觉通路的检查表明，它们在解剖学、生理学和组织化学特征上存在细微差异。视交叉上核对脊椎动物昼夜节律的控制起着重要作用，它也投射到视前区和下丘脑腹侧区，提供与社会信号有关的环境特征信息。这种连接模式表明，两栖动物大脑中的两个主要GnRH控制中心接收有关影响生殖的社会和环境线索的独立，平行的信息。
The secretion of gonadotropin releasing hormone (GnRH), and hence sex steroids, is influenced by social signals produced by conspecifics and by environmental cues such as day length. The sensory systems processing these varied signals must therefore connect with the GnRH control centers in the preoptic area and hypothalamus. Forebrain pathways in frogs provide a model for how vertebrates accomplish this. Auditory information, which can transmit the features of the vocal communication signals used by frogs during reproductive social behavior, reaches both the preoptic area and ventral hypothalamus via thalamic and midbrain nuclei. An examination of these auditory pathways suggests that there are subtle differences in their anatomical, physiological, and histochemical characteristics. The suprachiasmatic nucleus, which is important for controlling circadian rhythms in vertebrates, also projects to both the preoptic area and ventral hypothalamus, providing information about environmental characteristics in parallel with the information about social signals. This pattern of connections suggests that the two major GnRH control centers in amphibian brains receive independent, parallel information about the social and environmental cues influencing reproduction.