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Golgi analysis of tangential neurons in the lobula plate of Drosophila melanogaster

机译:果蝇小叶板中切向神经元的高尔基分析

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The lobula plate (LP), which is the third order optic neuropil of flies, houses wide-field neurons which are exquisitely sensitive to motion. Among Diptera, motion-sensitive neurons of larger flies have been studied at the anatomical and physiological levels. However, the neurons of Drosophila lobula plate are relatively less explored. As Drosophila permits a genetic analysis of neural functions, we have analysed the organization of lobula plate of Drosophila melanogaster.Neurons belonging to eight anatomical classes have been observed in the present study. Three neurons of the horizontal system (HS) have been visualized. The HS north (HSN) neuron, occupying the dorsal lobula plate is stunted in its geometry compared to that of larger flies. Associated with the HS neurons, thinner horizontal elements known as h-cells have also been visualized in the present study. Five of the six known neurons of the vertical system (VS) have been visualized. Three additional neurons in the proximal LP comparable in anatomy to VS system have been stained. We have termed them as additional VS (AVS)-like neurons. Three thinner tangential cells that are comparable to VS neurons, which are elements of twin vertical system (tvs); and two cells with wide dendritic fields comparable to CH neurons. of Diptera have been also observed. Neurons comparable to VS cells but with 'tufted' dendrites have been stained. The HSN and VS1-VS2 neurons are dorsally stunted. This is. possibly due to the shape of the compound eye of Drosophila which is reduced in the fronto-dorsal region as compared to larger flies.
机译:小叶板(LP)是苍蝇的三阶视神经毛,它容纳对运动非常敏感的广域神经元。在双翅目中,已经在解剖学和生理学水平上研究了较大果蝇的运动敏感神经元。然而,果蝇小叶板的神经元相对较少探索。由于果蝇允许对神经功能进行遗传分析,因此我们分析了果蝇的小叶板的组织。在本研究中观察到神经元属于八个解剖学类别。可视化了水平系统(HS)的三个神经元。与较大果蝇相比,占据背叶小叶板的HS北部(HSN)神经元发育迟缓。与HS神经元相关联,在本研究中还可以看到更薄的水平元素,称为h细胞。垂直系统(VS)的六个已知神经元中的五个已可视化。在近端LP中,在解剖学上与VS系统相当的另外三个神经元已被染色。我们将它们称为其他VS(AVS)样神经元。与VS神经元相当的三个较薄的切向细胞,它们是孪生垂直系统(tvs)的元素;以及两个具有与CH神经元相当的树突状区域的细胞。还观察到了双翅目。与VS细胞相当但具有“簇状”树突的神经元已被染色。 HSN和VS1-VS2神经元背侧发育不良。这是。可能是由于果蝇的复眼的形状与大果蝇相比在额叶背区域减小了。

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