昆虫学报 ›› 2020, Vol. 63 ›› Issue (4): 439-449.doi: 10.16380/j.kcxb.2020.04.007

• 研究论文 • 上一篇    下一篇

访花昆虫红腹毛蚊触角感器扫描电镜观察

袁轲, 朱慧*, 曲业宽, 任炳忠, 尤杨   

  1.  (东北师范大学生命科学学院, 植被生态科学教育部重点实验室, 长春130024)
  • 出版日期:2020-04-20 发布日期:2020-05-08

Observation of antennal sensilla of flower-visiting insect Bibio rufiventris (Diptera: Bibionidae) with scanning electron microscope

YUAN Ke, ZHU Hui*, QU Ye-Kuan, REN Bing-Zhong, YOU Yang    

  1.  (Key Laboratory of Vegetation Ecology, Ministry of Education, School of Life Sciences, Northeast Normal University, Changchun 130024, China)
  • Online:2020-04-20 Published:2020-05-08

摘要: 【目的】本研究旨在明确访花昆虫红腹毛蚊Bibio rufiventris触角感器的类型和分布。【方法】通过扫描电镜(scanning electron microscope, SEM)观察红腹毛蚊雌、雄成虫触角感器的种类、数量和形态,比较雌雄个体间的差异。【结果】红腹毛蚊雌、雄成虫触角均包含3部分,分别为柄节、梗节和鞭节,其中鞭节由8个亚节组成。雌成虫触角平均总长度为862.556±78.662 μm,雄成虫触角平均总长度为880.361±83.253 μm,雌、雄成虫触角各亚节的长度几乎相似,只有鞭节第8亚节长度有显著差异。红腹毛蚊的触角感器共有4大类,即刺形感器、锥形感器、毛形感器和Böhm氏鬃毛。其中,雌性红腹毛蚊触角感器共有6种亚型,即刺形感器、毛形感器2型、锥形感器(1, 2和4型)和Böhm氏鬃毛;雄性红腹毛蚊触角感器共有5种亚型,即刺形感器、毛形感器1型、锥形感器(2和3型)和Böhm氏鬃毛。【结论】红腹毛蚊雌、雄成虫触角感器在种类、数量以及形态特征方面存在一定差异。本研究为进一步探究红腹毛蚊触角感器的生理功能及其行为活动的分子机制提供了形态学基础。

关键词: 红腹毛蚊, 访花昆虫, 触角感器, 形态特征, 数量分布, 扫描电镜

Abstract: 【Aim】 This study aims to clarify the types and distribution of antennal sensilla of flower-visiting insect Bibio rufiventris. 【Methods】 The type, quantity and morphology of antennal sensilla of B. rufiventris were observed with scanning electron microscope (SEM), and their differences between male and female adults were compared. 【Results】 The female and male adult antennae of B. rufiventris include three parts, scape (Sc), pedicel (P) and flagellum (F), and the flagellum consists of eight flagellomeres. The average lengths of antennae of female and male adults are 862.556±78.662 and 880.361±83.253 μm, respectively. There is significant difference in the length of the 8th flagellomere, while the lengths of other flagellomeres are almost equal. Four types of sensilla including sensilla chaetica (Sc), sensilla basiconca (Sb), sensilla trichodea (St) and Böhm bristles (Bb) were observed on the female and male antennae. The antennal sensilla of female adults have six subtypes, i.e., sensilla chaetica (Sc), sensilla trichodea subtype 2 (St.2), sensilla basiconca subtypes 1, 2 and 4 (Sb.1, Sb.2 and Sb.4) and Böhm bristles (Bb), while those of male adults have five subtypes, i.e., sensilla chaetica (Sc), sensilla trichodea subtype 1 (St.1), sensilla basiconca subtype 2  (Sb.2) and sensilla basiconca subtype 3 (Sb.3) and Böhm bristles (Bb). 【Conclusion】 The types, amounts and characteristics of antennal sensilla of B. rufiventris adults show some 
differences between females and males. This study provides a morphological basis for studying the physiological functions of these sensilla and the molecular mechanisms of behavioral activities of B. rufiventris

Key words: Bibio rufiventris, flower-visiting insect, antennal sensilla, morphological characteristics, quantity distribution, scanning electron microscopy