Conotrachelus dimidiatus (Coleoptera: Curculionidae) interacts with immature guava fruits (Psidium guajava L.) for feed, sleep, mate and oviposit. Determination of the volatile organic compounds (VOCs) emitted by the insect and immature fruits can help improve understanding of plant‐insect and intraspecific insect interactions between females and males of C. dimidiatus. Daytime fruit setting emissions of immature guava consist mainly of limonene, caryophyllene, and aromadendrene. In addition to the host's volatiles, the aim of this study was to assess the VOCs released by the insect. Static headspace‐solid phase microextraction (SHS‐SPME), combined with gas chromatography/quadrupole time of flight mass spectrometry (GC/Q‐ToF‐MS), allowed the identification of the C10 terpenoids: grandlure I, II, II, IV, grandisoic acid, papayanol and papayanal bioactive compounds released by female and male C. dimidiatus under laboratory conditions. These chemical compounds are candidates for the preparation of a lure formulation.

中文翻译：

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介导植物-草食动物相互作用的萜类化合物的概况：通过静态顶空固相微萃取-气相色谱/QToF-质谱法筛选。

Conotrachelus dimidiatus (Coleoptera: Curculionidae) 与未成熟的番石榴果实 (Psidium guajava L.) 相互作用以进食、睡眠、交配和排卵。昆虫和未成熟果实释放的挥发性有机化合物 (VOC) 的测定有助于提高对 C. dimidiatus 雌性和雄性之间植物-昆虫和种内昆虫相互作用的理解。未成熟番石榴的白天坐果排放物主要包括柠檬烯、石竹烯和芳香树烯。除了宿主的挥发物外，本研究的目的是评估昆虫释放的 VOC。静态顶空-固相微萃取 (SHS-SPME) 结合气相色谱/四极杆飞行时间质谱 (GC/Q-ToF-MS)，可以鉴定 C10 萜类化合物：grandlure I、II、II、IV、大异酸，在实验室条件下雌性和雄性 C. dimidiatus 释放的木瓜醇和木瓜醛生物活性化合物。这些化合物是制备诱饵制剂的候选物。