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林业科学 ›› 2017, Vol. 53 ›› Issue (10): 118-132.doi: 10.11707/j.1001-7488.20171013

• 论文与研究报告 • 上一篇    下一篇

核桃举肢蛾成虫触角的超微结构观察

陈丹丹, 李天凤, 王琦琦, 唐光辉   

  1. 西北农林科技大学林学院 杨凌 712100
  • 收稿日期:2016-09-28 修回日期:2016-12-05 出版日期:2017-10-25 发布日期:2017-11-29
  • 基金资助:
    国家自然科学基金项目(31270690);陕西省科技攻关项目(2017NY-105)。

The Ultrastructure of Atrijuglans hetaohei (Lepidoptera:Oecophoridae)Moth Antennae

Chen Dandan, Li Tianfeng, Wang Qiqi, Tang Guanghui   

  1. College of Forestry Northwest A & F University Yangling 712100
  • Received:2016-09-28 Revised:2016-12-05 Online:2017-10-25 Published:2017-11-29

摘要: [目的]研究核桃果实害虫核桃举肢蛾的触角超微结构特征,为进一步利用触角代学通信系统开发新的防治技术提供参考。[方法]利用扫描电镜对核桃举肢蛾雌雄成虫触角、感受器及其鳞片细微结构分别进行观察。[结果]核桃举肢蛾触角为丝状,由柄节、梗节和鞭节组成,雌雄成虫鞭节分别由45和51个亚节组成。雌雄成虫触角上存在9种感器,即毛形感器、刺形感器、耳形感器、腔锥形感器、栓锥形感器、鳞形感器、Böhm氏鬃毛、锥形感器和钟形感器。其中毛形感器、耳形感器和腔锥形感器各有2种类型,即长曲毛形感器和长直毛形感器、Ⅰ型耳形感器和Ⅱ型耳形感器、具缘毛腔锥形感器和无缘毛腔锥形感器。不同类型的感器在触角各亚节上的分布与数量各不相同,感器主要着生于触角腹面,长曲毛形感器和钟形感器仅存在于雄虫触角上。雌雄成虫的Böhm氏鬃毛分布于触角基部,且形态上存在较大差异。触角柄节、梗节表面布满鳞片,鞭节除末端一节无鳞片外,各亚节背面和侧面均覆盖有鳞片,腹面无鳞片。鳞片上分布有小孔、纵肋、横梁和小梁等细微结构。雌虫各亚节鳞片上的纵脊间距、纵脊宽度、横梁长度和小梁长度均大于雄虫。小孔主要分布于触角柄节、梗节及鞭节基本的部分亚节上,小孔类型可分为单孔、双孔、三孔、四孔、五孔、六孔和七孔。不同部位鳞片上小孔的类型和分布存在差异,雌虫触角柄节鳞片上小孔类型比雄虫丰富,雄虫触角梗节和鞭节鳞片上小孔类型比雌虫丰富。[结论]本研究可明晰核桃举肢蛾触角感器类型及鳞片上小孔等超微结构特征,其具体功能还需结合电生理学、形态学、分子生物学进一步研究。

关键词: 核桃举肢蛾, 扫描电镜, 触角, 感受器, 鳞片, 小孔

Abstract: [Objective] This study aims to understand the ultrastructural characteristics of the antennal surface of Atrjuglans hetaohei Yang moth which is a serious fruit pest on Chinese walnut, Juglans regia.[Method] The antenna, sensillum and scale structure of both male and female A. hetaohei adults were studied using a scanning electron microscope.[Result] The result showed that the antenna was filamentous comprising scape, pedicel and flagella. The flagellum consists of 45 and 51 segments in male and female, respectively. Nine types of sensilla on the surface of antennae were observed:sensilla trichodea, sensilla chaetica, sensilla auricillica, sensilla coeloconica, sensilla styloconica, sensilla squamiformia, Böhm bristles, sensilla basiconica and campullacea sensilla. sensilla trichodea, sensilla auricillica and sensilla coeloconica had two subtypes, i.e., sensilla trichodea I and sensilla trichodea Ⅱ, sensilla auricillica I and sensilla auricillica Ⅱ, sensilla coeloconica I and sensilla coeloconica Ⅱ. The distribution and quantity of each sensillum, however, were different in each segment of antenna. Sensilla were mainly borne on the ventral surface of antenna, long song trichoid sensilla and campullacea sensilla were only found on males. Böhm bristles were distributed on the base of male antenna, and they were significantly different in morphology between males and females. The scape and pedicel were covered with scales, whereas the dorsal and lateral sides of each flagellar segment, except for the last segment, were covered with scales. There were holes, ridges, ribs, microribs structures on the scales. The spacing of ridge, width of ridge, length of rib, length of microrib on each subsegment scales were greater in females than in males. Holes were mainly distributed in scape, pedicel and some base segments of flagellar. Holes could be divided into seven types:single hole, double holes, three holes, four holes, five holes, six holes and seven holes. The types and distributions of holes in the scales of different parts were different. The type of holes in scales of scape of female was richer than in male, however, in antennal pedicel and flagella the type of holes in scales of male was richer than those of female.[Conclusion] This study has described the ultrastructures and characteristics of the sensilla and the holes in the scales of the antenna of A. hetaohei, and its specific function should be studied in combination with electrophysiology, morphology and molecular biology.

Key words: Atirjuglans hetaohei, scanning electron microscope(SEM), antenna, sensilla, scale, hole

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