The role of the frontal ganglion in the feeding and eclosion behavior of the moth manduca sexta
The role of the frontal ganglion in the feeding and eclosion behavior of the moth manduca sexta
复制标题
额叶神经节在天蛾取食和羽化行为中的作用
DOI：
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发表时间：
1998
影响因子：
2.8
通讯作者：
Booker
中科院分区：
文献类型：
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作者：
Miles;Booker
我们已经研究了肌肉组织和运动模式的前肠和额神经节的作用，在成虫天蛾。在成年人的发育过程中，前肠的结构从简单的直管变成了一个泵，包括一个灵活的屋顶室或cibarium，扩张肌肉抬高屋顶以吸入液体，压缩器将其向下推，并迫使液体沿着薄壁食道向下。额神经节在进食过程中驱动这个食泵的活动，这是通过将蔗糖溶液或水应用于长鼻来触发的。进食运动模式由泵扩张器的耦合爆发和来自泵压缩器的短持续时间、高频率的尖峰爆发组成。该泵也被激活，在成人蜕皮。此时，在蛾从蛹壳中出来之前用于吞咽蜕皮液，并且在羽化之后再次用于吞咽空气。这些行为对于羽化是重要的，并且对于羽化后翅膀的扩展是必要的。它们的运动模式与喂食程序相似。在成虫蜕皮前24小时，这种运动模式可以由肽蜕皮激素触发。另一种与羽化有关的肽，天蛾羽化触发激素，似乎并不触发食泵的活动。
We have examined the musculature and motor patterns of the foregut and the role of the frontal ganglion in the adult moth Manduca sexta. During adult development, the structure of the foregut changes from a simple straight tube to a pump consisting of a flexible-roofed chamber or cibarium, with dilator muscles that raise the roof to draw in fluids and a compressor to push it down and force the fluid down the thin-walled esophagus. The frontal ganglion drives the activity of this cibarial pump during feeding, which is triggered by the application of sucrose solution or water to the proboscis. The feeding motor pattern consists of coupled bursts of the pump dilators and shorter-duration, high-frequency bursts of spikes from the pump compressor. The pump is also activated at the adult molt. At this time, it is used both before the moth emerges from the pupal case for swallowing molting fluid and again after emergence for swallowing air. These behaviors are important for eclosion and are necessary for the expansion of the wings after eclosion. Their motor patterns are similar to the feeding program. Up to 24 h before adult ecdysis, this motor pattern can be triggered by the peptide eclosion hormone. The other eclosion-related peptide, Manduca sexta eclosion-triggering hormone, does not appear to trigger activity of the cibarial pump.