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首页> 外文期刊>Frontiers in neuroendocrinology >Integration of endocrine signals that regulate insect ecdysis.
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Integration of endocrine signals that regulate insect ecdysis.

机译：整合调节昆虫蜕皮的内分泌信号。

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摘要

The extremely large number of insects and members of allied groups alive today suggests that molting--shedding of an old cuticle--may be one of the most commonly performed behaviors on our planet. Removal of an old cuticle in insects is associated with stereotyped, species-specific patterns of behavior referred to as ecdysis. It has been recognized for decades that the initiation of ecdysis is under hormonal control, but until recently many of the key peptides that regulate ecdysis were unknown. The report in 1996 of a new ecdysis-triggering hormone (ETH) sparked an era of significant advances in our understanding of the regulation of molting. This article summarizes the current model of peptide regulation of ecdysis, a model that is based on a positive feedback loop between ETH and a brain peptide, eclosion hormone. Then the relationship of these regulatory peptides to the neural circuitry that is the ultimate driver of the behavior are described. Because insects can undergo both status quo (larval-larval) and metamorphic (larval-pupal and pupal-adult) molts, differences in ecdysis behavior at different life stages are described and potential sources of these differences are identified. Most of the work described is based on studies of ecdysis in the hawkmoth, Manduca sexta, but results from studies of ecdysis in the fruit fly Drosophila melanogaster are also discussed.
机译：如今，仍然存在着数量众多的昆虫和盟友，这表明蜕皮（脱落旧表皮）可能是地球上最常见的行为之一。去除昆虫中的旧表皮与定型的，特定于物种的行为模式有关，这种行为被称为蜕皮。数十年来，人们认识到蜕皮的发生是在激素的控制下进行的，但是直到最近，许多调控蜕皮的关键肽还是未知的。 1996年关于新的促蜕皮激素（ETH）的报告引发了我们对蜕皮调节的认识有了重大进步的时代。本文概述了蜕皮的肽调节的当前模型，该模型基于ETH与脑肽（促凝激素）之间的正反馈回路。然后描述了这些调节肽与神经回路的关系，神经回路是行为的最终驱动者。由于昆虫可以同时经历现状（幼虫-幼虫）和变质（幼虫-和and成虫）蜕变，因此描述了在不同生命阶段蜕皮行为的差异，并确定了这些差异的潜在根源。所描述的大部分工作都是基于鹰蛾对蜕皮的研究，但也讨论了果蝇果蝇对蜕皮的研究结果。

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