昆虫学报 ›› 2021, Vol. 64 ›› Issue (4): 498-509.doi: 10.16380/j.kcxb.2021.04.009

• 研究论文 • 上一篇    下一篇

黄胸蓟马触角感器的形态和分布

刘宇艳1, 王谅2, 张祥琴2, 陈艺欣1, 田厚军1, 林硕1, 李恒1, 余芸1, 林凌鸿1, 张洁3, 陈勇1,2,*, 魏辉1,2,*    

  1.  (1. 福建省农业科学院植物保护研究所, 福建省作物有害生物监测与治理重点实验室, 农业部福州作物有害生物科学观测试验站,  福州350003; 2. 福建农林大学, 闽台作物有害生物生态防控国家重点实验室, 福州350002;  3. 云南省农业科学院生物技术与种质资源研究所, 昆明 650205)
  • 出版日期:2021-04-20 发布日期:2021-04-25

Morphology and distribution of antennal sensilla of Thrips hawaiiensis (Thysanoptera: Thripidae)

LIU Yu-Yan1, WANG Liang2, ZHANG Xiang-Qin2, CHEN Yi-Xin1, TIAN Hou-Jun1, LIN Shuo1, LI Heng1, YU Yun1, LIN Ling-Hong1, ZHANG Jie3, CHEN Yong1,2,*, WEI Hui1,2,*   

  1. (1. Fujian Key Laboratory for Monitoring and Integrated Management of Crop Pests, Fuzhou Scientific Observing and Experimental Station of Crop Pests of Ministry of Agriculture, Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China; 2. State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China; 3. Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, China)
  • Online:2021-04-20 Published:2021-04-25

摘要: 摘要: 【目的】本研究旨在明确黄胸蓟马Thrips hawaiiensis各个发育阶段触角感器类型、形态和分布。【方法】运用扫描电镜技术观察黄胸蓟马雌雄成虫、若虫、预蛹、蛹触角的形态结构以及触角上感器类型、形态和分布。【结果】黄胸蓟马成虫触角由柄节、梗节和鞭节3个部分组成,其中长的鞭节分为5个鞭小节(I-V)。雌成虫触角平均长度为263.70±5.78 μm,雄成虫触角平均长度为225.79±8.92 μm。触角长度随着虫龄的增长而显著增加。雌雄成虫触角上共发现Bhm氏鬃毛、钟形感器、刺形感器(I和II)、毛形感器、锥形感器(I, II和III)、腔锥形感器和腔形感器7种触角感器以及微毛和表皮齿2种表皮结构。预蛹触角呈锥形,无明显分节,可以自由活动,平均长138.81±6.29 μm。蛹触角紧贴头胸背部,圆柱形、无明显分节,不能自由活动,平均长213.07±6.30 μm。1龄和2龄若虫触角由柄节、梗节和鞭节组成,其鞭节分为4个鞭小节(I-IV),触角平均长度分别为122.48±1.72和134.58±3.75 μm。1龄若虫触角上分布有Bhm氏鬃毛、钟形感器、刺形感器(I和II)、锥形感器(I和II)、腔锥形感器、腔形感器、毛形感器和特殊结构感器共8种类型感器,表面分布表皮齿和舌状结构2种表皮结构;2龄若虫触角上分布有Bhm氏鬃毛、钟形感器、刺形感器(I和II)、毛形感器、锥形感器(I和II)、腔锥形感器、腔形感器7种类型感器以及表皮齿1种表皮结构。【结论】本研究较全面地对黄胸蓟马各个发育阶段的触角及触角感器形态和分布进行了观察和描述,并对其功能进行了推测。研究结果为进一步研究蓟马类昆虫触角感器的生理功能奠定了理论基础。

关键词: 黄胸蓟马, 触角, 形态, 触角感器, 表皮结构, 扫描电镜

Abstract:

【Aim】 The aim of this study is to determine the type, morphology and distribution of antennal sensilla of Thrips hawaiiensis (Thysanoptera: Thripidae) at various developmental stages. 【Methods】 The antennal morphology and structure and the type, morphology and distribution of antennal sensilla of female and male adults, nymphs, pre-pupae and pupae of T. hawaiiensis were observed by using the scanning electron microscopy (SEM). 【Results】 The antenna of adult T. hawaiiensis is composed of scape, pedicel and a long flagellum with five flagellomeres (I-V). The mean length of antennae of female and male adults is 263.70±5.78 and 225.79±8.92 μm, respectively. The length of antennae increases with the growth of T. hawaiiensis. There are seven types of sensilla, i.e., Bhm bristles (BB), sensilla campaniformia (SCa), sensilla chaetica (SChI, SChII), sensilla trichodea (ST), sensilla basiconica (SBI, SBII, SBIII), sensilla coeloconica (SCo) and sensilla cavity (SCav), and two cuticular structures, i.e., microtrichia (mt) and cuticular denticles (cd), on the antenna of adults. The antenna of prepupae is conical, has no distinct segmentation and can move freely, with the mean length of 138.81±6.29 μm. The pupal antenna is cylindricalshaped pressing against the cephalo-thoracic back and immobile, and has no obvious segmentation, with a mean length of 213.07±6.30 μm. The antenna of the 1st and 2nd instar nymphs is composed of scape, pedicel and a flagellum with four flagellomeres (I-IV), with the mean length of 122.48±1.72 and 134.58±3.75 μm, respectively. There are eight types of sensilla [BB, SCa, SCh (SChI, SChII), SB (SBI, SBII), SCo, SCav, ST, and unusual sensillum (US)] and two cuticular structures [cd and ligulate structure (LS)] on the antenna of the 1st instar nymphs. There are seven types of sensilla [BB, SCa, SCh (SChI, SChII), ST, SB (SBI, SBII), SCo, and SCav] and one cuticular structure (cd) on the antenna of the 2nd instar nymphs. 【Conclusion】 In this study, the antenna and the morphology and distribution of antennal sensilla of T. hawaiiensis at various developmental stages were observed and comprehensively described, and the functions of antennal sensilla were inferred. The results lay a theoretical foundation for further research on the physiological functions of antennal sensilla of thrips.

Key words: Thrips hawaiiensis; antenna, morphology, antennal sensilla, cuticular structure, scanning electron microscopy