密点曲姬蜂触角感觉器的扫描电镜观察

doi:10.3864/j.issn.0578-1752.2012.15.025

摘要/Abstract

摘要： 【目的】明确密点曲姬蜂触角和触角感觉器的外部形态特点。【方法】对密点曲姬蜂触角的形态特征、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】密点曲姬蜂雌、雄成蜂触角形态相似，属于鞭状触角。触角由柄节、梗节和鞭节组成。其中雌蜂鞭节由22个鞭亚节组成。雄蜂鞭节由25个鞭亚节组成。成蜂触角上共有5种类型的感觉器：毛型感觉器、刺型感觉器、板型感觉器、Böhm氏鬃毛和腔锥形乳突状感觉器。毛形感觉器（I、II）、刺形感觉器、腔锥形乳突状感觉器和板形感觉器主要分布在鞭节各个亚节。毛形感觉器（III）主要分布在梗节和柄节的中部和端部。Böhm氏鬃毛分布在梗节和柄节的基部。雌、雄蜂触角感觉器的数量和密度存在明显差异。雄蜂各类感觉器的数量和密度明显高于雌蜂。【结论】密点曲姬蜂触角属于鞭状触角，共有5种类型感觉器。雌、雄蜂触角长度存在差异，感觉器的分布规律相似，感觉器的数量和密度存在性二型现象。

关键词: 密点曲姬蜂, 扫描电镜, 触角, 感觉器

Abstract: 【Objective】 The objective of this study is to define the external morphological characteristics of antennae and sensilla of Scambus punctatus. 【Method】 Morphological characteristics of the antenna and type, morphology, amounts and distributions of antenna sensilla of S. punctatus were examined and photographed with scanning electron microscopy. The differences in sensilla between both sexes were also compared. 【Result】 The antenna of male and female adult S. punctatus was both flagelliform, and composed of scape, pedicle and flagellum. The female adult flagellum had twenty-two segments and the male had twenty-five segments. Five types of antennal sensilla were identified in an antenna, trichodea, placodea, coeloconica, chaetica and Böhm bristles. Sensilla trichodea were most abundant. Sensilla trichodea (Ⅰ, Ⅱ), sensilla placodea, sensilla coeloconica and sensilla chaetica were found verticulate in flagellum, while sensilla trichodea (III) were found in middle and distal end of scapes and pedicles. Böhm bristles were found at the base of scapes and pedicles. There were nosexual differences in sensillum morphology and type. There were sexual differences in sensillum number and density. The male sensillum number and density was more than the female. 【Conclusion】The antenna of male and female adult S. punctatus is both flagelliform. Five types of antennal sensilla were found in an antenna. The length of the antenna differed very much, but the distributions of the sensillum were similar. There were sexual differences in the number of sensory organs and density between male and female adults.

Key words: Scambus punctatus, scanning electron microscopy, antenna, sensilla

赵红盈, 王志英, 高宇. 密点曲姬蜂触角感觉器的扫描电镜观察[J]. 中国农业科学, 2012, 45(15): 3213-3221.

ZHAO Hong-Ying, WANG Zhi-Ying, GAO Yu. Antennal Morphology and Sensilla Distribution of Scambus punctatus (Hymenoptera: Ichneunmonidae) with Scanning Electron Microscopy Observation[J]. Scientia Agricultura Sinica, 2012, 45(15): 3213-3221.

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