大灰优蚜蝇雌成虫足感器扫描电镜分析  

Ultrastructural observations of leg sensilla in Eupeodes corollae using scanning electron microscopy

作　　者：吴基楠 董婉莹 刘同先 王冰[2] 王桂荣[2] WU Jinan;DONG Wanying;LIU Tongxian;WANG Bing;WANG Guirong(College of Plant Health and Medicine,Qingdao Agricultural University,Qingdao Shandong 266109,China;State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China;Institute of Plant Protection and Microbiology,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China)

机构地区：[1]青岛农业大学植物医学学院,山东青岛266109 [2]中国农业科学院植物保护研究所植物病虫害综合治理全国重点实验室,北京100193 [3]浙江省农业科学院植物保护与微生物研究所,杭州310021

出　　处：《新疆农业科学》2024年第4期937-944,共8页Xinjiang Agricultural Sciences

基　　金：国家自然科学基金面上项目(32272621);国家自然科学基金重点项目(32130089);中国烟草总公司重大科技项目(110202201017(LS-01))。

摘　　要：【目的】分析大灰优蚜蝇Eupeodes corollae雌成虫胸足的感器类型、特征及分布,为天敌昆虫食蚜蝇产卵选择机制奠定形态学基础。【方法】利用扫描电镜技术观察其足上感器的超微结构。【结果】大灰优蚜蝇雌成虫胸足由基节、转节、腿节、胫节、跗节和前跗节6个部分组成,其上分布5种类型的感器,分别为锥形感器(3种亚型Ⅰ~Ⅲ)、毛形感器(长毛形感器2种亚型Ⅰ~Ⅱ;短毛形感器2种亚型Ⅰ~Ⅱ)、刺形感器(2种亚型Ⅰ~Ⅱ)、Bohm氏鬃毛和微毛感器。锥形感器仅分布于足跗节,其中锥形感器Ⅰ亚型顶端具孔,在化学感受过程中发挥重要的作用;毛形感器和刺形感器在雌成虫胸足腿节、胫节和跗节均有分布,这2种类型感器的毛干表面有纵脊,无壁孔,基部具可活动的臼状窝,是典型的机械感器;Bohm氏鬃毛和微毛感器数量较多,散布在各类感器之间。【结论】在大灰优蚜蝇雌成虫胸足上鉴定了5种类型的感器,足跗节上的感器类型和数量最多,是足上重要的化学感受区域。【Objective】The objective of this study is to elucidate the types,features,and distribution of leg sensilla in female adult Eupeodes corollae,in the hope of providing a morphological foundation for further studying on the egg-laying selection mechanism of the natural enemy E.corollae.【Methods】Using scanning electron microscopy,the ultrastructure of leg sensilla in female E.corollae adults was observed.【Results】The results showed that the legs of female adults of E.corollae consisted of six segments,including coxa,trochanter,femur,tibia,tarsus,and pretarsus.In total,five types of sensilla were distributed on the legs:sensilla basiconica(subtypes Ⅰ,Ⅱ,and Ⅲ),sensilla trichodea(long sensilla trichodea subtypes Ⅰ and II;short sensilla trichodea subtypes Ⅰ and Ⅱ),sensilla chaetica(subtypes Ⅰ and Ⅱ),B hm bristles,and microtrichiae.Sensilla basiconica(SB)were exclusively located on the tarsus,and one subtype SB Ⅰ had a pore at its tip,suggesting a crucial function in chemoreception.Sensilla trichodea and sensilla chaetica were distributed on the femur,tibia,and tarsus of legs in female adult.These two types of sensilla had the longitudinal furrows on their hairy surface,no wall pore,and a movable socket at the base,which were characteristic features of mechanosensilla.The number of B hm bristles and microtrichiae were large and widely distributed around various types of sensilla.【Conclusion】In this study,five types of sensilla are identified on the leg of female E.corollae.The abundance and diverse types of sensilla are found in the tarsus segments of the legs,denoting their critical role in chemosensory perception.

关 键 词：大灰优蚜蝇 足跗节 锥形感器 超微结构 化学感受 机械感受 

分 类 号：Q964[生物学—昆虫学] S43[农业科学—农业昆虫与害虫防治]