白蜡吉丁啮小蜂触角感觉器的扫描电镜观察  

Scanning Electron Microscopy Observation on the Antennal Sensilla of Tetrastichus planipennisi (Hymenoptera: Eulophidae)

作　　者：高宇[1,2] 王志英[1] 赵红盈[3] 刘欣[3] 

机构地区：[1]东北林业大学林学院,哈尔滨150040 [2]中国农业科学院茶叶研究所,杭州310008 [3]黑龙江省林业科学院森林保护研究所,哈尔滨150040

出　　处：《中国农业科学》2013年第9期1956-1964,共9页Scientia Agricultura Sinica

基　　金：国家林业公益性行业科研专项(201104069);黑龙江省森林工业总局科技计划项目(sgzjY2010016);黑龙江省财政厅科研基金项目

摘　　要：【目的】明确白蜡窄吉丁(Agrilus planipennis)的优势寄生性天敌—白蜡吉丁啮小蜂(Tetrastichus planipennisi)(膜翅目:姬小蜂科)触角及感觉器的外部形态特点。【方法】对白蜡吉丁啮小蜂触角的形态特征、感觉器的类型、形态、数量和分布特点进行扫描电镜观察,并对雌、雄蜂触角感觉器进行性别间差异比较。【结果】白蜡吉丁啮小蜂触角呈膝状,由柄节、梗节和鞭节组成,雌蜂鞭节有5亚节,雄蜂鞭节有4亚节。触角上着生有板形感器(Ⅰ型和Ⅱ型)、毛形感器(Ⅰ型、Ⅱ型和Ⅲ型)、指形感器、刺形感器、锥形乳头状感器和B hm氏鬃毛,其中,板形感器Ⅰ型仅分布于雄蜂棒节,雌蜂未见分布,毛形感器Ⅱ型和Ⅲ型仅分布于雌蜂触角,雄蜂未见分布,雌蜂的毛形感器总数量显著多于雄蜂。【结论】白蜡吉丁啮小蜂触角呈膝状,共有6种类型感器,雌、雄蜂的感器类型、数量和分布规律存在差异,具有明显的性二型现象。[Objective] The objective of this study is to define the external morphological characteristics of antennae and sensilla of Tetrastichus planipennisi （Hymenoptera, Eulophidae）, a larval endoparasitoid of the emerald ash borer （EAB）, Agrilus planipennis （Coleoptera, Buprestidae） in Northeast Asia. [Method] Morphological characteristics of the antenna and the type, morphology, amounts and distributions of antenna sensilla of T. planipennisi were examined and photographed with scanning electron microscope. The difference in sensilla between both sexes was also compared. [Result] The antenna of T. planipennisi was geniculate and composed of scape, pedicle and flagellum. The female adult flagellum had five segments and the male had four segments. Six types of antennal sensilla were indentified in the antenna, including two types of placoclea sensillum （PS I, PS II）, three types of trichodea sensillum （TS I, TS II, TSIII）, one finger-like sensillum, one chaetiea sensillum, one basiconic mastoid sensillum and B6hms bristles. Morever, PS [ distributed in male adult and TS I1 and TSHI only distributed in female. Total number of trichodea sensiUum in female antennae was significantly more than those in male. [ Conclusion ] The antenna of male and female adult T. planipennisi was both geniculate. The length of the antenna was about equal, but the types and distributions of the sensilla differed very much. There were sexual differences in the types, distributions and desities between male and female adults.

关 键 词：白蜡吉丁啮小蜂 白蜡窄吉丁 触角 感觉器 扫描电镜 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治]