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首页> 外文期刊>Entomotropica >Chemical composition and variability of the defensive secretion in Nasutitermes corniger (Motschulsky, 1885) in urban area in the Brazilian semiarid region
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Chemical composition and variability of the defensive secretion in Nasutitermes corniger (Motschulsky, 1885) in urban area in the Brazilian semiarid region

机译：巴西半干旱地区市区Nasutitermes corniger（Motschulsky，1885）防御分泌物的化学组成和变异性

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摘要

We analyzed the composition and chemical variability of the defensive secretion in Nasutitermes corniger in an urban area. We selected two environments with characteristics of Caatinga, and two surrounded by a semideciduous forest, in northeastern Brazil. Eighteen compounds were identified by gas chromatography-mass spectrometry. Cluster analysis classified the populations into two main groups: group I, seasonal forest, with α-pinene, β-pinene, 2-hexanol and 3-hexanol as major compounds, whereas group II, Caatinga, showed a lower percentage for α-pinene, β-pinene and limonene. It is suggested that climatic factors, geographical distance, and likely genetic differences between populations influence the chemical composition of the secretion of soldiers resulting in the possible formation of two ecotypes.
机译：我们分析了市区Nasutitermes corniger中防御性分泌物的组成和化学变异性。我们选择了巴西东北部两个具有Caatinga特征的环境，以及两个被半落叶林包围的环境。通过气相色谱-质谱法鉴定了十八种化合物。聚类分析将种群分为两大类：第一类，季节性森林，以α-pine烯，β-pine烯，2-己醇和3-己醇为主要化合物，而第二类，Caatinga，显示出较低的α-pine烯百分比，β-pine烯和柠檬烯。有人认为，气候因素，地理距离和种群之间可能的遗传差异会影响士兵分泌物的化学成分，从而可能形成两种生态型。

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