草地白刺粗角叶甲成虫触角感器的超微形态学  

Ultrastructural morphology on antennal sensilla of the adult Diorhabda rybakowi on grassland

作　　者：席驳鑫 尚素琴 胡桂馨[2] 陈建纲[2] 刘艳君[2] 王彦 崔晓宁 XI Boxin;SHANG Suqin;HU Guixin;CHEN Jiangang;LIU Yanjun;WANG Yan;CUI Xiaoning(College of Plant Protection,Gansu Agricultural University,Lanzhou 730070,Gansu,China;College of Pratacultural Science,Gansu Agricultural University/Key Laboratory for Grassland Ecosystem of Education Ministry/Engineering and Technology Research Center for Alpine Rodent Pests Control,National Forestry and Grassland,Lanzhou 730070,Gansu,China)

机构地区：[1]甘肃农业大学植物保护学院,甘肃兰州730070 [2]甘肃农业大学草业学院/草业生态系统教育部重点实验室/国家林业草原高寒草地鼠害防控工程技术研究中心,甘肃兰州730070

出　　处：《草业科学》2023年第7期1920-1931,共12页Pratacultural Science

基　　金：甘肃农业大学博士科研启动基金(GAU-KYQD-2018-24);国家牧草产业技术体系(CARS-34)。

摘　　要：白刺粗角叶甲(Diorhabda rybakowi)是严重危害我国西北荒漠草地防风固沙先锋植物唐古特白刺(Nitraria tangutorum)和泡泡刺(N.sphaerocarpa)的主要害虫。利用扫描电子显微镜技术对该虫的触角超微结构进行研究,并比较雌雄种间的差异。结果表明,白刺粗角叶甲雌、雄成虫触角均为丝状,鞭节分为9个亚节,且雄虫触角(4174.5μm)显著长于雌虫(3780.5μm)(P=0.006)。雌、雄虫触角表面均分布有大量表皮孔和鱼鳞状感觉附肢。雌、雄虫共鉴定到6种感器,分为刺形感器、毛形感器、锥形感器、腔锥形感器、耳形感器和Böhm氏鬃毛;其中,腔锥形感器仅在雄虫触角梗节少量分布。这为研究白刺粗角叶甲感知寄主挥发物或性信息素的嗅觉分子机制进而为其综合防控奠定了基础。The leaf beetle Diorhabda rybakowi is an important insect pest that seriously damages pioneer plants for windbreak and sand fixation in the desert-steppes of northwest China.The ultrastructure of its antennal sensillas were observed by using scanning electron microscopy,and also compared the differences between females and males.The results showed that the antennae of both female and male adults of D.rybakowi were filamentous,and the flagellum was divided into nine subsections.Additionally,the male antennae(4174.5μm)were significantly longer than female antennae(3780.5μm)(P=0.006).Both females and males have a large number of cuticular pores and appendages of cuticular plates distributed on the antennal surface.A total of six sensillums were identified in both male and female antennae,namely sensilla chaetica,sensilla trichodea,sensilla basiconca,sensilla coeloconica,sensilla auricillica,and Böhm’s bristle.The sensilla coeloconica was only found in a small number of male pedicel.This has provided the basic foundation for a deeper understanding of the molecular mechanisms of leaf beetle olfaction for sensing host volatiles or sex pheromones,and also for its integrated control.

关 键 词：白刺粗角叶甲 触角 感受器 超微结构 扫描电镜 唐古特白刺 泡泡刺 

分 类 号：S812.6[农业科学—草业科学]