Fine structure and primary sensory projections of sensilla located in the labial-palp pit organ of Helicoverpa armigera (Insecta)

文献类型： 外文期刊

第一作者： Tang, Qing-Bo

作者： Tang, Qing-Bo;Wang, Yan-Ru;Yan, Feng-Ming;Berg, Bente G.;Liu, Yang;Wang, Gui-Rong

作者机构：

关键词： Antennal lobe;CO2-sensing sensillum types;Helicoverpa armigera (Insecta);Labial-palp pit organ;Sensory projections

期刊名称：CELL AND TISSUE RESEARCH （ 影响因子：5.249； 五年影响因子：4.588 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The fine structure and primary sensory projections of sensilla located in the labial-palp pit organ of the cotton bollworm Helicoverpa armigera (Insecta, Lepidoptera) are investigated by scanning electron and transmission electron microscopy combined with confocal laser scanning microscopy. The pit organ located on the third segment of the labial palp is about 300 μm deep with a 60-μm-wide opening, each structure containing about 1200 sensilla. Two sensillum types have been found, namely hair-shaped and club-shaped sensilla, located on the upper and lower half of the pit, respectively. Most sensilla possess a single dendrite. The dendrite housed by the club-shaped sensilla is often split into several branches or becomes lamellated in the outer segment. As reported previously, the sensory axons of the sensilla in the labial pit organ form a bundle entering the ipsilateral side of the subesophageal ganglion via the labial palp nerve and project to three distinct areas: the labial pit organ glomerulus in each antennal lobe, the subesophageal ganglion and the ventral nerve cord. In the antennal lobe, the labial pit organ glomerulus is innervated by sensory axons from the labial pit organ only; no antennal afferents target this unit. One neuron has been found extending fine processes into the subesophageal ganglion and innervating the labial palp via one branch passing at the base of the labial palp nerve. The soma of this assumed motor neuron is located in the ipsilateral cell body layer of the subesophageal ganglion. Our results provide valuable knowledge concerning the neural circuit encoding information about carbon dioxide and should stimulate further investigations directed at controlling pest species such as H. armigera.

分类号： Q2

  • 相关文献

[1]Central Projections of Antennal and Labial Palp Sensory Neurons in the Migratory Armyworm Mythimna separata. Zhao, Xin-Cheng,Tang, Qing-Bo,Berg, Bente G.,Xie, Gui-Ying,Wang, Gui-Rong. 2017

作者其他论文 更多>>

微信小程序