SENSORY ORGANS OF THE THORACIC LEGS OF THE MOTH MANDUCA-SEXTA
SENSORY ORGANS OF THE THORACIC LEGS OF THE MOTH MANDUCA-SEXTA
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DOI：
10.1007/bf00318442
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发表时间：
1990-02-01
影响因子：
3.6
通讯作者：
GRIFFIN, LM
中科院分区：
文献类型：
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作者：
KENT, KS;GRIFFIN, LM
六纹夜蛾的胸腿在幼虫到成虫的变态过程中获得了新的形式，并发育了新的感觉器官和肌肉。由于我们对神经回路的重组和变态过程中新行为的获得感兴趣，我们正在对幼虫和成虫腿的感觉元素进行表征，以便我们可以确定新的感觉输入对行为变化的贡献。在这里，我们描述了成人腿的感觉结构，使用扫描电子显微镜观察外部感受器，并用钴染色检查潜在感觉神经元的神经支配。我们发现，与幼虫的腿不同，成虫的腿上覆盖着各种各样的感受器。所有三对胸腿都有分散的、单神经支配的鳞状感受器。钟形感受器在关节附近单独出现或成簇出现。发板由许多单独支配的毛发组成，也存在于关节附近。其他更特化的感受器出现在腿的远端节段。这些包括单神经支配的棘突、另外两类单神经支配的毛发和三类多重神经支配的感受器。内部感觉器官包括脊索器、膝下器和多极关节感受器。
The thoracic legs of the moth Manduca sexta acquire a new form and develop a new complement of sensory organs and muscles during metamorphosis from larva to adult. Because of our interest in the reorganization of neural circuitry and the acquisition of new behaviors during metamorphosis, we are characterizing sensory elements of larval and adult legs so that we may determine the contribution of new sensory inputs to the changes in behaviours. Here we describe the sensory structures of adult legs using scanning electron microscopy to view the external sensilla and cobalt staining to examine innervation by underlying sensory neurons. We find that, in contrast to larval legs, the adult legs are covered with a diverse array of sensilla. All three pairs of thoracic legs contain scattered, singly innervated scalelike sensilla. Campaniform sensilla occur singly or in clusters near joints. Hair plates, consisting of numerous singly innervated hairs, are also present near joints. Other more specialized sensilla occur in distal leg segments. These include singly innervated spines, two additional classes of singly innervated hairs, and three classes of multiply innervated sensilla. Internal sensory organs include chordotonal organs, subgenual organs, and multipolar joint receptors.