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Bioactive Male-Produced Volatiles from Anastrepha obliqua and their Role in Attraction of Conspecific Females
Journal of Chemical Ecology ( IF 2.3 ) Pub Date : 2021-01-21 , DOI: 10.1007/s10886-021-01248-z
Nathaly C. De Aquino , Luana L. Ferreira , Raphael Tavares , Claudinete S. Silva , Adriana Mendonça , Iara Sordi Joachim-Bravo , Paulo Milet-Pinheiro , Daniela Navarro , Fabiane C. De Abreu Galdino , Ruth R. Do Nascimento

The study of insect semiochemicals, especially pheromones, is of fundamental importance for the development of strategies for controlling agricultural pests. In this study, volatile compounds involved in the communication between males and females of the fruit fly, Anastrepha obliqua (Diptera: Tephritidae), for mating purposes were characterized to develop attractant formulations for females of this species. Extracts containing volatile compounds released by males of A. obliqua were obtained by the dynamic headspace technique and analyzed by gas chromatography coupled with an electroantennographic detector (GC-EAD) and gas chromatography coupled with mass spectrometry (GC-MS). Twenty-one volatile compounds were identified in the aeration extracts of males. Five of them caused EAD responses from the antennae of females: 1-heptanol, linalool, (Z)-3-nonen-1-ol, (E,Z)-3,6-nonadien-1-ol, and (Z,E)-α-farnesene. Six synthetic mixtures of these compounds, including the five-component blend and all possible four-component blends, were formulated in a biopolymer and used in behavioral bioassays conducted in the laboratory arena with conspecific virgin females. One blend of 1-heptanol, linalool, (Z)-3-nonen-1-ol, and (Z,E)-α-farnesene attracted more females than the collection of volatiles from virgin males used as control. The other mixtures were as attractive to A. obliqua females as the control treatment. This study indicates potential for use of these compounds in monitoring and control strategies for this pest.



中文翻译:

生物活性男性产生的挥发油及其在吸引雌性女性中的作用

昆虫化学信息素,尤其是信息素的研究对控制农业害虫的策略具有至关重要的意义。在这项研究中,为交配目的,涉及果蝇雌蝇Anastrepha obliqua(双翅目:蝇科)的雄性和雌性之间的交流的挥发性化合物的特征是为该种雌性开发引诱剂。提取物含有由斜纹夜蛾雄性释放的挥发性化合物通过动态顶空技术获得了这些化合物,并通过气相色谱仪与电子血管造影检测器(GC-EAD)和气相色谱仪与质谱法(GC-MS)进行了分析。在男性的曝气提取物中鉴定出21种挥发性化合物。其中有五个引起了雌性触角的EAD响应:1-庚醇,芳樟醇,(Z)-3-壬烯-1-醇,(E,Z)-3,6-壬二烯-1-醇和(Z, E)-α-法呢烯。这些化合物的六种合成混合物(包括五组分共混物和所有可能的四组分共混物)被配制成生物聚合物,并用于在实验室中与特定雌性雌性一起进行的行为生物测定。1-庚醇,芳樟醇((Z)-3-壬烯-1-醇和(Z,E)-α-法呢烯吸引的雌性比从用作对照的原始雄性中收集的挥发物要多。其他混合物对斜纹夜蛾雌虫的吸引力与对照治疗一样。这项研究表明在这些害虫的监测和控制策略中使用这些化合物的潜力。

更新日期:2021-01-21
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