《环境昆虫学报》

作者	单位
赵晓东，崔晓宁，胡桂馨，刘艳君，温雅洁	甘肃农业大学草业学院，草业生态系统教育部重点实验室，甘肃省草业工程实验室，中-美草地畜牧业可持续发展研究中心，兰州 730070

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中文摘要:

本研究旨在明确我国北方苜蓿重要害虫——牛角花齿蓟马Odontothrips loti触角感器类型、形态特征及分布特点。利用扫描电镜观察牛角花齿蓟马雌、雄成虫触角的超微结构，比较雌、雄虫之间的差异。结果表明：牛角花齿蓟马雌虫触角长度（314.42±7.21 μm）明显较雄虫（260.58±5.69 μm）长，除柄节和第I鞭节外，其他各节雌虫均较雄虫粗大。牛角花齿蓟马成虫触角感器类型共有7种，即Bhm氏鬃毛（BB）、刺形感器（SChI, SChII）、锥形感器（SBI, SBII, SBIII）、钟形感器（SCa）、腔锥形感器（SCo）、腔形感器（SCav）和毛形感器（ST），雌虫触角上述7种类型感器均有分布，而雄虫触角上未发现腔形感器。牛角花齿蓟马成虫触角感器在类型、形态特征及分布方面表现雌、雄个体差异。本研究为深入探究牛角花齿蓟马触角感器的嗅觉通讯机制提供形态学基础。

英文摘要:

The purpose of this study was to clarify the types, morphological characteristics and distribution of antennal sensilla in female and male Odontothrips loti adults, one of the most serious pest on alfalfa in northern of China. The antennae ultrastructure were observed using scanning electron microscope (SEM), and their differences between female and male adults were also compared. The results showed that the average length of antennae in female adults were significantly longer than male adults, with their length were 314.42±7.21 μm and 260.58±5.69 μm, respectively. Besides, there were significant difference of length or width during all segments in females than males, except scape and flagellomere I. In total, we identified seven types of antennal sensilla in female and male adults, including Bhm bristles (BB), sensilla chaetica (SChI, SChII), sensilla basiconca (SBI, SBII, SBIII), sensilla campaniformia (SCa), sensilla coeloconica (SCo), sensilla cavity (SCav), and sensilla trichodea (ST). These antennal sensillas were all existed in female adults, while male adults were absence of sensilla cavity (SCav). In some extent, there are difference of antennal sensilla types, morphological characteristics and distribution between female and male adults. The results provided a morphological foundation for deeply exploring mechanism of olfactory communication of these antennal sensillas in O. loti adults.

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