Morphology and Volatile Compounds of Metathoracic Scent Gland in Tessaratoma papillosa (Drury) (Hemiptera: Tessaratomidae)
文献类型： 外文期刊
作者： Zhao, D. 1 ; Gao, J. 1 ; Wang, Y. 1 ; Jiang, J. 1 ; Li, R. 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Key Lab Integrated Pest Management Trop Crops, Environm & Plant Protect Inst, Minist Agr, Danzhou 571737, Hainan, Peoples R China
关键词： Gas chromatography-mass spectrometry;scanning electron microscopy;stink bug;stink gland;semiochemicals;tridecane
期刊名称：NEOTROPICAL ENTOMOLOGY （ 影响因子：1.434； 五年影响因子：1.46 ）
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收录情况： SCI
摘要： Tessaratomo papillosa (Drury) (Hemiptera: Tessaratomidae) is a serious insect pest of litchi and longan in South China. When disturbed, this insect could release large quantities of disagreeable odorous volatiles from its scent gland. Knowledge on thescent gland and its secretion is crucial for developing the semiochemical methods to manage this pest. Morphology and ultrastructure of the metathoracic scent glands (MTGs) were studied under stereo and scanning electron microscopy, and the volatile compounds of MTGs from both male and female T. papillosa were analyzed with coupled gas chromatography-mass spectrometry (GC-MS). The MTG complex is located between the metathorax and the first abdominal segment at the ventral surface of the insect, which has a well-developed single double valve cystic-shaped orange median reservoir, paired colorless lateral glands in both sides, and a long and wavy tubular accessory gland that inlays tightly into the ventral edge around the median reservoir. The MTG opensto the body surface through paired ostioles located between the meso- and metacoxae of the evaporatorium with mushroom bodies. The GC-MS analyses showed that female and male adults have nine major volatile components in common. Tridecane is the most abundant in both females and males, reaching up to 47-1% and 51.8% of relative amount, respectively. The minor component is benzophenone with only 0.28% and 0.14%. Furthermore, undecane, tetradecane, 3-methyl-tridecane, and cyclopenta-decane were found onlyin males. The possible function of volatile compounds of MTG contents in T. papillosa is addressed.
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