Srinivasan Aisvarya, Thiyagarajan Elaiyabharathi, Marimuthu Murugan, Mookiah Shanthi, Ramasamy Srinivasan, Narayanan Manikanda Boopathi, Sampathrajan Vellaikumar
Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India.
Department of Medicinal and Aromatic Plants, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India.
Microsc Res Tech. 2025 Jul;88(7):2126-2137. doi: 10.1002/jemt.24848. Epub 2025 Mar 10.
Liriomyza sativae Blanchard is an invasive leafminer species affecting major vegetable crops in Tamil Nadu. These insects locate their hosts by detecting volatiles emitted from host plants and their surroundings, using olfactory receptors on their antennae and maxillary palps. This study represents the first attempt to examine the various types of sensilla on the antennae and palps of adult male and female L. sativae using Field Emission Scanning Electron Microscopy (FESEM). The analysis revealed five types of sensilla: microtrichia, chaetic, trichoid, basiconic, and coeloconic. Microtrichia and chaetic sensilla, found on the scape, pedicel, and palp, are involved in nonolfactory functions such as mechanoreception. The flagellum, the main olfactory organ, contains trichoid, basiconic, coeloconic sensilla, and microtrichia. Basiconic and chaetic sensilla are categorized into subtypes based on their morphology. This study lays the groundwork for future electroantennographic research into the interactions between these sensilla receptors and environmental chemical compounds.
美洲斑潜蝇是一种入侵性潜叶蝇物种，影响着泰米尔纳德邦的主要蔬菜作物。这些昆虫通过触角和下颚须上的嗅觉感受器，检测寄主植物及其周围环境释放的挥发性物质来定位寄主。本研究首次尝试使用场发射扫描电子显微镜（FESEM）检查成年雌雄美洲斑潜蝇触角和触须上的各种类型的感器。分析揭示了五种类型的感器：微毛、刺形、毛形、锥形和腔锥形。在柄节、梗节和触须上发现的微毛和刺形感器参与诸如机械感受等非嗅觉功能。鞭节是主要的嗅觉器官，包含毛形、锥形、腔锥形感器和微毛。锥形和刺形感器根据其形态分为亚型。本研究为未来关于这些感器受体与环境化合物之间相互作用的触角电位研究奠定了基础。
