Acta Entomologica Sinica ›› 2019, Vol. 62 ›› Issue (9): 1102-1108.doi: 10.16380/j.kcxb.2019.09.011

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Anatomical structure of the abdominal ganglion of Apolygus lucorum (Hemiptera: Miridae)

XIE Gui-Ying1, MA Bai-Wei1, LIU Xiao-Lan1, CHANG Ya-Jun1, CHEN Wen-Bo1, ZHANG Yong-Jun2, ZHAO Xin-Cheng1,*   

  1. (1. College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, China; 2. State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China)
  • Online:2019-09-20 Published:2019-09-03

Abstract: 【Aim】 To reveal the anatomical organization of the abdominal ganglion of the green mirid bug, Apolygus lucorum (Hemiptera: Miridae). 【Methods】 The neuropils of the abdominal ganglion of A. lucorum adults were labeled by immunohistochemical staining with synaptic protein antibody. Digital images of the abdominal ganglion were obtained by using a confocal laser scanning microscope. The three-dimensional models were reconstructed by using image analysis software. 【Results】 The abdominal ganglion of A. lucorum adults is located at the distal end of the ventral nerve cord, fused with the mesothoracic and metathoracic ganglia and becoming a posterior ganglion. Like brain and thoracic ganglia, the abdominal ganglion is composed of outer somata and inner neuropils. Nerve fibers of the abdominal ganglion include two connectives in ventral and nine pairs of nerve bundles given off from the lateral. Nine nerve bundles are respectively connected with nine neuromeres full of synapsin. These neuromeres are fused tightly without distinct boundary. The last two neuromeres are expanded forming the terminal abdominal ganglion (TAG). Bilateral neuromeres are connected by transverse commissures. Around the abdominal ganglion, there are massive, small and close packed somata. In the middle of the anterior dorsal portion and the posterior ventral portion, there are two and five big somata, respectively. 【Conclusion】 The results demonstrate the anatomical organization of the abdominal ganglion of A. lucorum and provide the morphological basis for the study of behavioral regulation and the development and evolution of nervous system of insects.

Key words: Apolygus lucorum, abdominal ganglion, anatomical structure, threedimensional model, immunohistochemical staining, confocal laser scanning microscope