CEQA-Instituto Agroforestal del Mediterráneo, Universitat Politècnica de València, Camino de Vera s/n, edificio 6C-5a planta, Valencia, Valencia 46022, Spain.
Universitat de València, Facultat de Químiques, Departamento de Química Orgánica, Dr. Moliner 50, Burjassot, Valencia 46100, Spain.
J Agric Food Chem. 2024 Jun 5;72(22):12478-12488. doi: 10.1021/acs.jafc.4c00921. Epub 2024 May 20.
(Targioni-Tozzetti) (Hemiptera: Coccoidea: Pseudococcidae), a polyphagous and cosmopolitan pest native to Australia, is a highly damaging pest for numerous crops of economic importance. The sex pheromone of this species (2-(1,5,5-trimethylcyclopent-2-en-1-yl)ethyl acetate), currently used for pest monitoring purposes, was not attractive to males in field experiments conducted in Spanish persimmon orchards infested with this mealybug. The virgin and mated female volatile profiles of these populations were studied by the volatile collection of effluvia in Porapak-Q. The resulting extracts were analyzed by gas chromatography coupled to mass spectrometry (GC-MS), revealing a new compound specific to virgin females and different from the previously described sex pheromone. Based on GC-MS data and nuclear magnetic resonance experiments, we envisaged monoterpene 2-(1,5-dimethyl-4-methylenecyclopent-2-en-1-yl)ethyl acetate as the new sex pheromone candidate, which was synthesized and shown to be attractive in the field to males of the Spanish population.
(Targioni-Tozzetti)（半翅目：粉蚧科）原产于澳大利亚，是一种多食性和世界性害虫，对许多具有经济重要性的作物具有高度破坏性。该物种的性信息素（2-(1,5,5-三甲基环戊-2-烯-1-基)乙酸乙酯）目前用于害虫监测目的，但在西班牙柿子果园中进行的田间试验中，对雄性没有吸引力。这些种群的处女和交配后雌性挥发物图谱通过 Porapak-Q 收集的挥发生物进行研究。所得提取物通过气相色谱-质谱联用 (GC-MS) 进行分析，揭示了一种新的化合物，该化合物特定于处女雌性，与先前描述的性信息素不同。基于 GC-MS 数据和核磁共振实验，我们设想单萜 2-(1,5-二甲基-4-亚甲基环戊-2-烯-1-基)乙酸乙酯作为新的性信息素候选物，该化合物已被合成并在田间对西班牙种群的雄性具有吸引力。
