访花昆虫红腹毛蚊触角感器扫描电镜观察  

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

作　　者：袁轲 朱慧[1] 曲业宽 任炳忠 尤杨 YUAN Ke;ZHU Hui;QU Ye-Kuan;REN Bing-Zhong;YOU Yang(Key Laboratory of Vegetation Ecology,Ministry of Education,School of Life Sciences,Northeast Normal University,Changchun 130024,China)

机构地区：[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　　处：《昆虫学报》2020年第4期439-449,共11页Acta Entomologica Sinica

基　　金：中央高校基本科研业务费项目(2412019FZ029);吉林省教育厅“十三五”科学技术项目(JJKH20180004KJ)。

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±78.662μm,雄成虫触角平均总长度为880.361±83.253μm,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B?hm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B?hm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B?hm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。【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 8 th 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 B?hm 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 B?hm 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 B?hm 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.

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 

分 类 号：Q964[生物学—昆虫学]