Parasitoids as taxonomists: how does the parasitoid Chouioia cunea distinguish between a host and a non-host?
文献类型： 外文期刊
作者： Pan, Lina 2 ; Gao, Wenfang 2 ; Liu, Xinyu 2 ; Qin, Dongyu 2 ; Zhang, Tiantian 2 ; Ren, Rui 2 ; Zhang, Weiyi 2 ; Sun, Meidi 2 ; Gao, Cuiqing 3 ; Bai, Penghua 4 ; You, Wei 5 ; Zhu, Gengping 2 ; Li, Min 1 ;
作者机构： 1.Tianjin Normal Univ, Tianjin Key Lab Conservat & Utilizat Anim Divers, Tianjin 300387, Peoples R China
2.Tianjin Normal Univ, Tianjin Key Lab Conservat & Utilizat Anim Divers, Tianjin, Peoples R China
3.Nanjing Forestry Univ, Coll Forestry, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing, Peoples R China
4.Tianjin Acad Agr Sci, Inst Plant Protect, Tianjin, Peoples R China
5.Inst Landscape Sci & Technol, Baotou, Peoples R China
关键词： Chouioia cunea; Hyphantria cunea; Helicoverpa armigera; Spodoptera exigua; Spodoptera frugiperda; GC-MS; hosts; non-hosts; pupae volatile
期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.1； 五年影响因子：4.4 ）
ISSN： 1526-498X
年卷期： 2023 年
页码：
收录情况： SCI
摘要： BACKGROUNDHow parasitoids distinguish hosts from non-hosts remains an unknown question. Chouioia cunea Yang (Eulophidae) is an important fall webworm parasitoid that attacks many forest and agricultural pests. To study the differences in the chemical clues used by C. cunea to distinguish host and non-host plants, we used gas chromatography-mass spectrometry (GC-MS) to identify volatile compounds of two C. cunea hosts (Hyphantria cunea and Helicoverpa armigera) and two non-hosts (Spodoptera exigua and Spodoptera frugiperda). Additionally, we used behavioral assays to compare the attraction of C. cunea to various compounds. RESULTSThe two natural host species were more attractive than the two non-host species, in the following order: Hyphantria cunea > Helicoverpa armigera > S. exigua = S. frugiperda. The pupae of the natural hosts contained 1-dodecene, which was not produced by the two natural non-hosts. When the 'attractants' based on the difference between the species-specific blend emitted by pupae and the optimal blend were sprayed onto the natural non-host pupae, they significantly improved the attraction of C. cunea to the non-host pupae. CONCLUSIONThese results revealed that specific host-produced volatile compounds guide C. cunea to distinguish between natural hosts and non-hosts. Overall, this study provides a foundation for developing a behavior-modifying strategy to re-direct C. cunea attacks to control important non-host pests. & COPY; 2023 Society of Chemical Industry.
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