Coordination of flipflopping neural signals and head turning during pheromone-mediated walking in a male silkworm moth Bombyx mori
Coordination of flipflopping neural signals and head turning during pheromone-mediated walking in a male silkworm moth Bombyx mori
复制标题
雄性蚕蛾信息素介导的行走过程中翻转神经信号和头部转动的协调
DOI：
10.1007/s003590050255
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
Ryohei Kanzaki
中科院分区：
文献类型：
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作者：
Tatsuya Mishima;Ryohei Kanzaki
摘要家蚕雄蛾在向性信息素来源的曲折行走过程中，头部左右移动。高速视频分析显示，行走方向的变化与这次转头是同步的。因此，行走的方向由头部转动的方向指示。颈部运动神经元通过第二颈神经支配颈腹肌和腹肌，调节头部转动。为了确定“触发器”状态转换在下行中间神经元从大脑到胸神经节所携带的棘波活动中的作用，我们同时记录了触发器下行中间神经元和单个颈腹1颈运动神经元的信息素反应。颈腹侧1颈运动神经元的活动与触发器下行中间神经元的活动同步。应用共聚焦成像技术对颈腹侧1颈运动神经元进行形态观察。我们的结果表明，触发器信号在雄性家蚕信息素介导的行为中起着重要的指示转向信号的作用。
Abstract Male silkworm moths, Bombyx mori, move their heads side-to-side during zigzag walking toward a source of sex pheromone. High-speed video analysis revealed that changes in walking direction were synchronized with this head turning. Thus the direction of the walking is indicated by the direction of the head turning. Head turning was regulated by neck motor neurons which innervate the cervical ventral muscles and the ventral muscles through the second cervical nerve. To determine the role of the `flipflop' state transition in spike activity carried by descending interneurons from the brain to the thoracic ganglion, we recorded pheromonal responses simultaneously from flipflop descending interneurons and a single cervical ventral 1 neck motor neuron. The activity of the cervical ventral 1 neck motor neuron was synchronized to that of the flipflop descending interneurons. The cervical ventral 1 neck motor neuron was morphologically identified using confocal imaging. Our results demonstrate that the flipflop signals play an important role in instructing turning signals during the pheromone-mediated behavior in a male B. mori.