草地贪夜蛾寄生蜂螟蛉盘绒茧蜂成蜂触角感器的扫描电镜观察

doi:10.16380/j.kcxb.2023.08.011

昆虫学报 ›› 2023, Vol. 66 ›› Issue (8): 1105-1116.doi: 10.16380/j.kcxb.2023.08.011

草地贪夜蛾寄生蜂螟蛉盘绒茧蜂成蜂触角感器的扫描电镜观察

王文文¹, 何朋阳¹, 刘同先², 靖湘峰^1,*, 张世泽^1,*

(1. 西北农林科技大学植物保护学院, 旱区作物逆境生物学国家重点实验室, 植保资源与病虫害治理教育部重点实验室, 农业农村部西北黄土高原作物有害生物综合治理重点实验室, 杨凌 712100; 2. 贵州大学昆虫研究所, 贵阳 550025)

出版日期:2023-08-20 发布日期:2023-09-27

Observation of the sensilla on the adult antennae of Cotesia ruficrus (Hymenoptera: Braconidae), a parasitoid of Spodoptera frugiperda (Lepidoptera: Noctuidae), under scanning electron microscope

WANG Wen-Wen¹, HE Peng-Yang¹, LIU Tong-Xian², JING Xiang-Feng^1,*, ZHANG Shi-Ze^1,*

(1. State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A&F University, Yangling 712100, China; 2. Institute of Entomology, Guizhou University, Guiyang 550025, China)

Online:2023-08-20 Published:2023-09-27

摘要/Abstract

摘要： 【目的】探明农业重大入侵害虫草地贪夜蛾Spodoptera frugiperda的中国本土寄生性天敌螟蛉盘绒茧蜂Cotesia ruficrus雌雄成蜂触角感器的种类、形态、数量和分布，为深入探究螟蛉盘绒茧蜂各类感器的功能和嗅觉机制提供理论支持。【方法】采用扫描电镜技术对螟蛉盘绒茧蜂雌的雄成蜂触角感器进行超微结构观察。【结果】螟蛉盘绒茧成蜂雄成蜂触角鞭节各亚节呈长念珠状，雌成蜂触角的端部5节呈短念珠状；雄成蜂触角长度显著大于雌成蜂的。雌雄成蜂触角上共发现了分泌孔和11种感器，分别为Böhm氏鬃毛、毛形感器、板形感器、锥形感器、刺形感器、腔锥形感器、钟形感器、鳞形感器、芽孢形感器、腔形感器和柱形感器；其中，毛形感器、板形感器和锥形感器具有2种亚型。毛形感器和板形感器是螟蛉盘绒茧蜂触角上的主要感器，分布广，数量多；腔形感器只在梗节上成对分布；柱形感器仅在雄成蜂鞭节上发现；芽孢形感器为茧蜂科昆虫中首次发现。【结论】螟蛉盘绒茧蜂雌雄成蜂触角共有11种感器，多于其他已报道茧蜂的触角感器，其中芽孢形感器为茧蜂科昆虫中首次报道，推测它们可能在寄主定位和搜寻配偶过程中发挥重要作用。

关键词: 螟蛉盘绒茧蜂, 成蜂触角, 感器, 扫描电镜, 超微结构

Abstract: 【Aim】 To clarify the types, morphology, quantity and distribution of sensilla on the female and male adult antennae of Cotesia ruficrus, an indigenous parasitic natural enemy against Spodoptera frugiperda, a major invasive agricultural pest, and provide theoretical support for exploring the function and olfactory mechanism of various types of sensilla of C. ruficrus.【Methods】 The sensilla on female and male adult antennae of C. ruficrus were observed with scanning electron microscope. 【Results】 The subsegments of antennal flagellum of the male adult of C. ruficrus are long moniliform, and the distal 5 segments of the antennae of female adults are short moniliform. The total length of the male antennae is significantly longer than that of the female. Eleven types of sensilla including Böhm’s bristles, sensilla trichodea, sensilla placodea, sensilla basiconica, sensilla chaetica, sensilla coeloconica, sensilla campaniformia, sensilla squamous, sensilla gemmiformia, sensilla cavity and sensilla cylindric, and smell pores were found on female and male adult antenna. Among them, sensilla trichodea, sensilla placodea and sensilla basiconica have two subtypes. Sensilla trichodea and sensilla placodea are the main sensilla on the antennae of C. ruficrus, with a wide distribution and a large number. Sensilla cavity are only distributed in pairs on the pedicel, and sensilla cylindric were only found on the flagellum of male adult. Sensilla gemmiformia were found for the first time in Braconidae.【Conclusion】We identified eleven types of antennal sensilla in female and male adults of C. ruficrus, more than those in other known braconid species, and sensilla gemmiformia were found for the first time in braconid species, speculating that they may play an important role in host positioning and searching for spouses.

Key words: Cotesia ruficrus, adult antenna, sensillum, scanning electron microscope, ultrastructure

王文文, 何朋阳, 刘同先, 靖湘峰, 张世泽. 草地贪夜蛾寄生蜂螟蛉盘绒茧蜂成蜂触角感器的扫描电镜观察[J]. 昆虫学报, 2023, 66(8): 1105-1116.

WANG Wen-Wen, HE Peng-Yang, LIU Tong-Xian, JING Xiang-Feng, ZHANG Shi-Ze. Observation of the sensilla on the adult antennae of Cotesia ruficrus (Hymenoptera: Braconidae), a parasitoid of Spodoptera frugiperda (Lepidoptera: Noctuidae), under scanning electron microscope[J]. Acta Entomologica Sinica, 2023, 66(8): 1105-1116.

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草地贪夜蛾寄生蜂螟蛉盘绒茧蜂成蜂触角感器的扫描电镜观察

Observation of the sensilla on the adult antennae of Cotesia ruficrus (Hymenoptera: Braconidae), a parasitoid of Spodoptera frugiperda (Lepidoptera: Noctuidae), under scanning electron microscope

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