Alkenyl sex pheromone analogs in the hemolymph of an arctiid Eilema japonica and several non-arctiid moths.
Alkenyl sex pheromone analogs in the hemolymph of an arctiid Eilema japonica and several non-arctiid moths.
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DOI：
10.1016/j.jinsphys.2015.09.006
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发表时间：
2015-11
影响因子：
2.2
通讯作者：
T. Fujii;Masanobu Yamamoto;R. Nakano;Takuya Nirazawa;Y. Rong;S. Dong;Y. Ishikawa
中科院分区：
文献类型：
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作者：
T. Fujii;Masanobu Yamamoto;R. Nakano;Takuya Nirazawa;Y. Rong;S. Dong;Y. Ishikawa
大多数蛾类利用新合成脂肪酸衍生的化合物作为其性信息素（I型）。相比之下，属于两个最近分歧蛾科，Arctiidae和Geometridae的物种，利用烯烃及其环氧化物，这是来自膳食必需脂肪酸（EFA），作为他们的性信息素（II型）。在后一种物种中，EFA被认为在称为卵母细胞的特化细胞中通常在链延长后转化为烯烃。这些烯烃通过血淋巴运输到信息素腺，它们从那里分泌，有或没有进一步的修改。我们证实，EFA衍生的烯烃在血淋巴中的外观是密切相关的信息素腺体的形成在一个arctiid蛾Eilema japonica完成。利用Ⅰ型性信息素对几种蛾类的血淋巴进行了分析，结果表明，在一种甘蓝夜蛾（Mamestra brassicae）和两种褐飞虱（Ostrinia crassacalisandOstrinia scapulalis）的血淋巴中存在典型的Ⅱ型性信息素成分（Z，Z，Z）-3，6，9-二十三烯（T23）。我们的研究结果表明，蛾利用I型信息素有能力合成II型性信息素，并建议最近分歧组蛾可能已二次利用EFA衍生的烯烃作为性信息素。
The majority of moth species utilize compounds derived fromde novosynthesized fatty acids as their sex pheromones (type I). In contrast, species belonging to two recently diverged moth families, Arctiidae and Geometridae, utilize alkenes and their epoxides, which are derived from dietary essential fatty acids (EFAs), as their sex pheromones (type II). In the latter species, EFAs are considered to be converted into alkenes, often after chain elongation, in specialized cells called oenocytes. These alkenes are transported through the hemolymph to the pheromone gland, from which they are secreted with or without further modifications. We confirmed that the appearance of EFA-derived alkenes in the hemolymph was closely associated with the completion of pheromone gland formation in an arctiid mothEilema japonica. Analyses of the hemolymph of several moth species utilizing type-I sex pheromones demonstrated the occurrence of (Z,Z,Z)-3,6,9-tricosatriene (T23), a typical type-II component, in the hemolymph of a noctuidMamestra brassicaeand two crambidsOstrinia furnacalisandOstrinia scapulalis. Our results demonstrated that moths utilizing type-I pheromones have the ability to synthesize type-II sex pheromones, and suggested that recently diverged groups of moths may have secondarily exploited EFA-derived alkenes as sex pheromones.