田彩红 黄建荣 王亚楠 张胜男 李国平 封洪强

摘要 草地贪夜蛾 Spodoptera frugiperda 于2018年12月入侵中国大陆，为害玉米等农作物。本研究采用扫描电子显微镜技术，对草地贪夜蛾成虫触角感器的形态结构进行了观察。结果表明：草地贪夜蛾触角呈丝状，由柄节、梗節和鞭节组成，雌雄成虫鞭节分别由63个和69个亚节组成，雌雄成虫触角被覆鳞片，共有11种感器类型，分别是：毛形感器、刺形感器、芽胞感器、鳞形感器、耳形感器、坛形感器、Bhm氏鬃毛、 锥形感器、栓锥形感器、 腔锥形感器和腔乳头状感器，多数感器又有不同的亚型。鞭节上感器类型较柄节和梗节丰富。雄蛾触角上的感器数量多于雌蛾。

关键词 草地贪夜蛾; 触角感器; 扫描电镜; 超微结构

中图分类号： Q 964

文献标识码： A

DOI： 10.16688/j.zwbh.

2020287

Ultrastructure and morphology of antennal sensilla of the adult Spodoptera frugiperda （J.E.Smith）

TIAN Caihong， HUANG Jianrong， WANG Yanan， ZHANG Shengnan， LI Guoping*， FENG Hongqiang*

（Henan Key Laboratory of Crop Pest Control， Key Laboratory of Integrated Pest Management on Crops in Southern

Region of Northern China， Ministry of Agriculture and Rural Affairs， International Joint Research Laboratory

for Crop Protection of Henan， Biological Pesticides Engineering Research Center of Henan Province，

Institute of Plant Protection， Henan Academy of Agricultural Sciences， Zhengzhou 450002， China）

Abstract

Spodoptera frugiperda （J. E.Smith）， a new agricultural invasive species found in China Mainland in December of 2018， might cause serious damage to corn Zea mays Linn. and other crops in our country. The morphology and ultrastructure of antennal sensilla of this pest were observed with scanning electron microscope. The results showed that the antennae of S.frugiperda were filamentous and made up of scapus， pedicel and flagella. The flagellum consisted of 63 and 69 segments in female and male moths， respectively. The surface of the antennae are covered with scales. The antennae of adult moth consisted of 11 types of antennal sensilla， namely sensilla trichodea， sensilla chaetica， sensilla gemmiformium， sensilla squamiformia， sensilla auricillica， sensilla ampullacea， Bhm bristles， sensilla basiconica， sensilla styloconica， sensilla coeloclnica and sensilla cavitata-peg. There were different subtypes for most sensilla. Sensilla in the flagellum were much more abundant than on scapus and pedicel. There were much more sensilla in the antennae of male moths than in female antennae.

Key words

Spodoptera frugiperda; antennal sensilla; scanning electron microscope; ultrastructure

草地贪夜蛾Spodoptera frugiperda （J. E.Smith）隶属鳞翅目，夜蛾科，灰翅夜蛾属，是一种原产于美洲的世界性农业害虫[1]。该虫广泛分布于美洲大陆，是当地重要的农业害虫，可为害76科353种植物[2]。该虫2018 年 12 月入侵我国云南西部地区[3]，2019年度数据表明草地贪夜蛾在我国主要为害玉米，在玉米上发生危害面积占发生作物总面积的98.6%[4]。目前已经发现草地贪夜蛾在我国为害的作物达15种，另外还可为害皇竹草Pennisetum sinese、马唐Digitaria sanguinalis、牛筋草Eleusineindica 和苏丹草Sorghum sudanense等禾本科杂草。草地贪夜蛾为迁飞性害虫，与我国南部相邻的国家都已有发生，在我国云南、广东、广西、贵州、四川南部等地均可周年繁殖，境内外虫源地域范围广，种群数量巨大[5]。现阶段，我国植保系统对于玉米常发性害虫的监测已经有了长足的进步，害虫的监测预警和防控技术较为成熟。……