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Mate Recognition by the Green Mate Borer, Hedypathes betulinus (Coleoptera: Cerambycidae): the Role of Cuticular Compounds
Journal of Insect Behavior ( IF 1 ) Pub Date : 2019-03-01 , DOI: 10.1007/s10905-019-09719-8
Samara M. M. Andrade , Daiane Szczerbowski , Diogo Montes Vidal , Jeremy D. Allison , Paulo H. G. Zarbin

Green mate, Ilex paraguariensis (Aquifoliaceae), is native to South America and its range includes the south of Brazil. Hedypathes betulinus (Coleoptera: Cerambycidae) is considered the most important insect pest of green mate, causing severe damage to plants and significant economic losses. In previous work, laboratory assays were performed to document the mating sequence of this species and the male long-range sex pheromone was identified. Previous reports of the mating sequence suggested that males recognize females only after antennal contact and consequently the existence of a contact sex pheromone. To test the hypothesis that mate-recognition in H. betulinus is mediated by a contact sex pheromone, this study analyzed male and female body extracts by GC-MS. Extracts were fractionated to separate the compounds by polarity, producing hexane, cyclohexene and ether fractions. Active fractions were identified with laboratory bioassays. Bioassays were performed by introducing female cadavers to live males and male copulation response scored (± ). In assays using solvent washed female cadavers, males did not recognize female cadavers, but attempted copulation with female cadavers with the extract re-applied. Cumulatively, these results suggest that a contact sex pheromone on the cuticle of females mediates mate recognition. Laboratory bioassays and analysis of the female solvent extracts produced by fractionation, individually and in binary and ternary combinations, suggests that the more polar compounds present in the ether fraction are crucial to mate recognition in this species.

中文翻译:

Green Mate Borer,Hedypathes betulinus(鞘翅目:天牛科)的伴侣识别:表皮化合物的作用

绿伴侣冬青(Aquifoliaceae)原产于南美洲,其分布范围包括巴西南部。Hedypathes betulinus (Coleoptera: Cerambycidae) 被认为是绿伴侣最重要的害虫,对植物造成严重损害,造成重大经济损失。在之前的工作中,进行了实验室分析以记录该物种的交配序列,并确定了雄性远程性信息素。先前关于交配序列的报告表明,雄性只有在触角接触后才能识别雌性,因此存在接触性信息素。为验证桦木脑的配偶识别是由接触性信息素介导的假设,本研究通过 GC-MS 分析了男性和女性的身体提取物。提取物被分馏以通过极性分离化合物,产生己烷,环己烯和醚馏分。用实验室生物测定鉴定活性组分。通过将雌性尸体引入活的雄性进行生物测定,并对雄性交配反应进行评分(±)。在使用溶剂清洗过的女性尸体进行的分析中,男性无法识别女性尸体,而是尝试与女性尸体交配,并重新应用提取物。累积起来,这些结果表明雌性角质层上的接触性信息素介导了配偶识别。通过分馏产生的雌性溶剂提取物的实验室生物测定和分析,单独以及二元和三元组合,表明醚部分中存在的极性更强的化合物对于该物种的配偶识别至关重要。通过将雌性尸体引入活的雄性进行生物测定,并对雄性交配反应进行评分(±)。在使用溶剂清洗过的女性尸体进行的分析中,男性无法识别女性尸体,而是尝试与女性尸体交配,并重新应用提取物。累积起来,这些结果表明雌性角质层上的接触性信息素介导了配偶识别。通过分馏产生的雌性溶剂提取物的实验室生物测定和分析,单独以及二元和三元组合,表明醚部分中存在的极性更强的化合物对于该物种的配偶识别至关重要。通过将雌性尸体引入活的雄性进行生物测定,并对雄性交配反应进行评分(±)。在使用溶剂清洗过的女性尸体进行的分析中,男性无法识别女性尸体,而是尝试与女性尸体交配,并重新应用提取物。累积起来,这些结果表明雌性角质层上的接触性信息素介导了配偶识别。通过分馏产生的雌性溶剂提取物的实验室生物测定和分析,单独以及二元和三元组合,表明醚部分中存在的极性更强的化合物对于该物种的配偶识别至关重要。但尝试与女性尸体交配并重新应用提取物。累积起来,这些结果表明雌性角质层上的接触性信息素介导了配偶识别。通过分馏产生的雌性溶剂提取物的实验室生物测定和分析,单独以及二元和三元组合,表明醚部分中存在的极性更强的化合物对于该物种的配偶识别至关重要。但尝试与女性尸体交配并重新应用提取物。累积起来,这些结果表明雌性角质层上的接触性信息素介导了配偶识别。通过分馏产生的雌性溶剂提取物的实验室生物测定和分析,单独以及二元和三元组合,表明醚部分中存在的极性更强的化合物对于该物种的配偶识别至关重要。
更新日期:2019-03-01
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