飞蝗(Locusta migratoria migratorioides, Reiche and Fairmaire)外心神经索神经神经元的结构(直翅目,蝗科)

Peter Bräunig
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引用次数: 11

摘要

近年来,我们对迁徙蝗虫(Locusta migratoria migratorioides, R.和F.)(直翅目,蝗科)外心神经索(LCNCs)神经元形态的了解有了很大的提高,这主要是由于使用了针对昆虫神经肽家族成员的抗血清的免疫细胞化学研究。原则上,有三种形态类型的神经元位于中枢神经系统内,支配蝗虫LCNCs:腹部神经节包含(i)双侧突出,可能未配对的神经元(BPNs)和(ii)成对,单侧突出的神经元。此外,(iii) LCNCs接受位于食管下神经节内的一对神经元的神经支配。这三种神经元的轴突都通过腹神经节背节神经的最远端延伸——心节神经投射到LCNCs中。当估计一个心脏神经节段中包含的轴突数量并由迄今已确定的所有中枢神经元形成时,这个数量超过了以前使用电子显微镜看到的轴突轮廓的数量。这表明在这些昆虫中已经发现了大多数,或者可能是所有投射到LCNCs的中枢神经元。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Structure of identified neurons innervating the lateral cardiac nerve cords in the migratory locust, Locusta migratoria migratorioides (Reiche and Fairmaire) (Orthoptera, Acrididae)

Our knowledge about the morphology of neurons innervating the lateral cardiac nerve cords (LCNCs) in migratory locusts, Locusta migratoria migratorioides (R. and F.) (Orthoptera, Acrididae) has increased considerably during recent years, mainly owing to immunocytochemical studies using antisera directed against members of insect neuropeptide families. In principle, there are three morphological types of neurons located within the CNS, which innervate the LCNCs in locusts: abdominal ganglia contain (i) bilaterally projecting, possibly unpaired neurons (BPNs) and (ii) paired, unilaterally projecting neurons. In addition, (iii) the LCNCs receive innervation from a pair of neurons, which is located within the suboesophageal ganglion. The axons of all three types of neurons project into the LCNCs via the segmental heart nerves, the most distal extensions of the dorsal segemental nerves of abdominal ganglia. When estimating the number of axons contained in one segmental heart nerve and formed by all central neurons so far identified, this number exceeds the number of axon profiles previously seen using the electron microscope. This indicates that most, or perhaps all central neurons projecting into the LCNCs, have been identified in these insects.

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