草地贪夜蛾成虫触角感器超微结构观察

[目的]草地贪夜蛾是一种严重危害农业生产的迁飞性害虫,本研究旨在了解草地贪夜蛾成虫触角感器的类型、超微结构和分布.[方法]采用扫描电镜对其雌雄成虫触角感器类型及分布进行观察.[结果]草地贪夜蛾雌雄成虫触角由柄节、梗节及鞭节3部分组成,雄蛾触角稍长于雌蛾,且触角表面覆有大量鳞片.共观察到7种类型的感受器,分别为B?hm氏...

Ultrastructure of antennae sensilla of Spodoptera frugiperda

[Aim] Spodoptera frugiperda is a migratory pest that causes serious agricultural damage. The aim of this study was to clarify the type, ultrastructure, and distribution of antennal sensillae of S. frugiperda.[Method] The type and distribution of antennal sensillae were observed using scanning electron microscopy.[Result] The antennae of both sexes of S. frugiperda consisted of three parts:the pedicel, scape, and flagellum. The antennae of males were slightly longer than those of females, and the surface of the antennae was covered with many scales. Seven types of sensilla were identified from the antennae of male and female moths, including B hm bristles, sensilla trichodea, sensilla chaetica, sensilla basiconica, sensilla coeloconica, sensilla styloconica and sensilla squamiformia. B hm bristles were mainly found in the pedicel and scape, while the rest were distributed in the flagellum.[Conclusion] Both sexes of S. frugiperda had the same types of antennal sensilla; however, the length of similar sensilla was significantly longer for males than females. Whether this specialization and difference are conducive to its function need to be confirmed using electrophysiological techniques.