Yan Shu-Yan, Yang He-Sen, Huang Cong, Zhang Gui-Fen, Arnó Judit, Collatz Jana, Li Chuan-Ren, Wan Fang-Hao, Liu Wan-Xue, Zhang Yi-Bo
Ministry of Agriculture and Rural Affairs Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River (Co-Construction by Ministry and Province), Hubei Engineering Technology Center for Forewarning and Management of Agricultural and Forestry Pests, College of Agriculture, Yangtze University, Jingzhou 434025, China.
State Key Laboratory for Biology of Plant Diseases and Insect Pests, Key Laboratory for Prevention and Management of Invasive Alien Species of Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
Int J Mol Sci. 2025 Jul 29;26(15):7312. doi: 10.3390/ijms26157312.
The parasitoid wasp is a key koinobiont solitary endoparasitoid of the invasive agricultural pest . This study investigates both the morphological and molecular foundations of sex-specific olfactory differentiation in this species. Morphological analysis revealed that males possess significantly longer antennae (2880.8 ± 20.36 μm) than females (2137.23 ± 43.47 μm), demonstrating pronounced sexual dimorphism. Scanning electron microscopy identified similar sensilla types on both sexes, but differences existed in the length and diameter of specific sensilla. Transcriptomic analysis of adult antennae uncovered molecular differentiation, identifying 11 odorant-binding proteins (OBPs) and 20 odorant receptors (ORs), with 27 chemosensory genes upregulated in females and 4 enriched in males. Integrating morphological and molecular evidence demonstrates complementary sexual specialization in the olfactory apparatus of . Linking these findings to the potential functions of different sensilla types, as discussed in the context of prior research, provides crucial insights into the sex-specific use of volatile cues. These findings provide critical insights into the use of volatile signals in this highly relevant species for biological control targeting .
这种寄生蜂是入侵性农业害虫的一种关键的共栖性独居内寄生蜂。本研究调查了该物种性别特异性嗅觉分化的形态学和分子基础。形态学分析表明，雄性的触角（2880.8 ± 20.36微米）明显比雌性的触角（2137.23 ± 43.47微米）长，显示出明显的两性异形。扫描电子显微镜鉴定出两性的感器类型相似，但特定感器的长度和直径存在差异。对成年触角的转录组分析揭示了分子分化，鉴定出11种气味结合蛋白（OBP）和20种气味受体（OR），其中27个化学感应基因在雌性中上调，4个在雄性中富集。整合形态学和分子证据表明，该物种嗅觉器官存在互补的性别特化。将这些发现与先前研究背景下讨论的不同感器类型的潜在功能联系起来，为挥发性线索的性别特异性利用提供了关键见解。这些发现为在这个与生物防治高度相关的物种中利用挥发性信号提供了关键见解。
