Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, College of Agriculture, Guangxi University, Nanning, China.
Microsc Res Tech. 2021 Sep;84(9):2149-2165. doi: 10.1002/jemt.23770. Epub 2021 Apr 12.
The antennal sensilla of Copidosomopsis nacoleiae (Eady) (Hymenoptera: Chalcidoidea: Encyrtidae) were observed under scanning and transmission electron microscopy in this study. The antennae of C. nacoleiae are geniculate, and the flagellum is composed of five subsegments in males and six in females. Six types of sensilla were observed, including sensilla trichodea, sensilla chaetica, sensilla basiconic capitate pegs, sensilla placodea, sensilla basiconica, and Böhm's bristles. Sensilla trichodea were evenly distributed throughout the antennae. Sensilla chaetica, sensilla basiconic capitate pegs and sensilla placodea were found on the flagellomeres. Sensilla basiconica were only found on the club, and Böhm's bristles were found on the radicle and the pedicel. Sensilla trichodea, sensilla placodea, sensilla chaetica, and sensilla basiconic capitate pegs were found to be the most common sensilla of the parasitoids in the superfamily Chalcidoidea. The external and internal characteristics, types, number, distribution, and dimensions of these sensilla are described, and their possible functions are discussed in accordance with host-detection behavior. Future studies on the host location mechanisms of C. nacoleiae will be based upon these observations.
本研究利用扫描和透射电子显微镜观察了 Nacoleia 瘤姬蜂（Eady）（膜翅目：小蜂总科：长尾小蜂科）的触角感器。C. nacoleiae 的触角为膝状，触角鞭节由雄性的五个亚节和雌性的六个亚节组成。观察到六种感器，包括毛形感器、刺形感器、棒状锥形帽状感器、板形感器、栓锥形感器和博姆氏鬃毛。毛形感器均匀分布于整个触角。刺形感器、棒状锥形帽状感器和板形感器分布在触角鞭节上。栓锥形感器仅分布于触角棒，博姆氏鬃毛分布于梗节和柄节。毛形感器、板形感器、刺形感器和棒状锥形帽状感器被认为是小蜂总科寄生蜂最常见的感器。本文描述了这些感器的外部和内部特征、类型、数量、分布和尺寸，并根据寄主探测行为讨论了它们的可能功能。未来关于 Nacoleia 瘤姬蜂寄主定位机制的研究将基于这些观察结果。
