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Chemistry of Trail Pheromones from CubitermesTermites (Amitermes dentatus): An Innovation inPest Management

机译:来自白蚁白蚁(Amitermes dentatus)的微量信息素的化学:病虫害管理的创新

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Trail pheromones were extracted with petroleum ether from the sternal gland near the anterior portion of the fifth abdominal sternit of cubitermes termites ( Amitermes dentatus ) and fourteen pheromonal compounds were characterised using Gas Chromatography-Mass Spectrometry (GC/MS) Technique in combination with Fourier Transform-Infrared Spectroscopy (FT-IR). The compounds analysed include ethylbenzene (6.70%), 3,4-dimethylheptane (6.32%), decane (6.87%), 2,7-dimethyloctane (12.28%), 2-methylundecane (19.00%), 3-methylnonane (5.14 %), 2,6-dimethyloctane (4.23%), undecane (11.44 %), 2-methyldecane (3.94%), methyl decanoate (2.35%), 14-octadecenoic acid methyl ester (10.71%), heptacosanoic acid methyl ester (1.88%), 2-butyloctan-1-ol (3.45%) and E-2-octadecadecen-1-ol (5.70%). FT-IR analysis of the extract showed peaks at 1460.16 (CH3 bending), 1549.86 (C=C), 1636.65 (C=C), 2866.32 (C-H), 2934.79 (C-H) and 3426.66 (O-H) cm-1 indicating the presence of alkane, aromatic, alkene and alcoholic compounds in the extract. These compounds consist of 69.22% hydrocarbon, 14.94% ester, 9.15% alcohol and 6.70% aromatic compound. The highest component was 2-methylundecane followed by 2,7-dimethyloctane. This examination has revealed that the trail pheromone in termites is not just a single compound but a mixture of compounds. The synthetic forms of these semiochemicals might be applied in luring and mass trapping termites for possible extermination. This method of pest control ensures environmental friendliness as the problems posed by dangerous chemicals are eradicated.
机译:用石油醚从cubictermes白蚁(Amitermes dentatus)的第五个腹腔白蚁前部附近的胸骨提取出信息素,并使用气相色谱-质谱联用(GC / MS)技术结合傅里叶变换对十四种信息素进行了表征-红外光谱(FT-IR)。分析的化合物包括乙苯(6.70%),3,4-二甲基庚烷(6.32%),癸烷(6.87%),2,7-二甲基辛烷(12.28%),2-甲基十一烷(19.00%),3-甲基壬烷(5.14%) ),2,6-二甲基辛烷(4.23%),十一烷(11.44%),2-甲基癸烷(3.94%),癸酸甲酯(2.35%),14-十八烯酸甲酯(10.71%),庚二十碳酸甲酯(1.88) %),2-丁基辛烷-1-醇(3.45%)和E-2-十八碳烯-1-醇(5.70%)。提取物的FT-IR分析显示在1460.16(CH3弯曲),1549.46(C = C),1636.35(C = C),2866.32(CH),2934.79(CH)和3426.66(OH)cm-1处的峰指示存在提取物中的烷烃,芳烃,烯烃和醇类化合物。这些化合物由69.22%的烃,14.94%的酯,9.15%的醇和6.70%的芳族化合物组成。最高的组分是2-甲基十一烷,其次是2,7-二甲基辛烷。该检查表明白蚁中的踪迹信息素不仅是单一化合物,而且是化合物的混合物。这些化学信息素的合成形式可用于诱杀和诱捕白蚁,以进行灭杀。这种虫害控制方法可确保消除环境中的有害化学物质带来的环境危害。

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