棉铃虫触角感器的超微结构观察.pdf

2002, 35( 12) : 1479 1482 Scientia Agricultura Sinica 王桂荣, 郭予元, 吴孔明 ( , 100094) : 利用电子显微镜对棉铃虫成虫触角感器的形态结构进 了观察扫描电镜观察结果表明, 棉铃虫触角 由柄节梗节和70~ 82 节鞭节组成, 触角内侧面覆盖有鳞片, 绝大部分触角感器位于触角的背面腹面和外侧面 雌雄蛾触角上均存在以下5 种感器, 即毛形感器锥形感器刺形感器耳形感器和腔锥感器, 各种感器在雌雄蛾 触角上的分布和数量没有明显的区别在触角表面存在表皮隆起结构, 特别是在中部和基部, 表皮隆起形成了明 显的三角棱形刺状结构透射电镜观察表明, 棉铃虫触角上起嗅觉作用的毛形感器和锥形感器均由表皮壁鞘细 胞感受器淋巴液和感觉神经细胞树突等结构组成它们的内部结构有明显的区别: 毛形感器表皮壁较厚表皮壁 上的亲脂性孔道数量很少而且毛形感器中的神经树突通常有 1 个或少数几 个, 而锥形感器的表皮壁很薄表皮壁 上的亲脂性孔道以及锥形感器中的神经树突的数量较多 : 棉铃虫; 触角感受器; 超微结构; 扫描电镜; 透射电镜 Observat ion on t he Ult rast ruct ures of Antennal Sensilla in Helicoverpa armigera WANG Gui rong, GU O Yu yuan, WU Kong ming ( State Key L aboratory of Plant D isease and Insect Pests, Institute of Plant Protection, Chinese A cademy of Agricultural Sciences, Beij ing 1 94) Abstracts: The morphology and structures of antennal sensilla of H elicoverpa armigera were observed un der scanning and transmission electron microscope. Antennae of Helicoverpa armigera are made up of scapus, pedicle and flagella that the latter consist of 70 82 segments. The inner side surface of antenna is covered with cataphylla and most of the antennal sensilla lie on its outer, upper and lower surfaces. Both the antennae of male and female contain five kinds of antennal sensilla, namely, sensillum trichodeum, sensillum basiconicum, sensil lum chaeticum, ear shaped sensillum and sensillum coeloconicum, and the kinds, number and distribution of an tennal sensilla of both sexes are similar. T here are a large number of serrate cuticular processes on antennal sur face, especially on the middle and basic parts of antenna. Sensillum trichodeum and sensillum basiconicum, the