Xu Jin, Deng Caiping, Lu Wenfeng, Wu Sanan
The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China.
College of Forestry, Shanxi Agricultural University, Jinzhong 030801, China.
Insects. 2021 Sep 14;12(9):821. doi: 10.3390/insects12090821.
Antennal sensilla play an essential role in insect life because they receive environmental cues. is an important pine pest in China, but information on the morphology and distribution of its sensilla is limited. To elucidate the mechanism of insect-plant chemical communication, we examined the insect antennae and sensilla by scanning electron microscopy. The results showed that the antennae of were filiform and consisted of a basal scape, a pedicel, and a flagellum with tapered flagellomeres. We identified seven types of sensilla, including trichodea, coeloconica, auricillica, basiconica, styloconica (two subtypes), Böhm's bristles, and squamiformia, all of which were distributed on the antennae of both sexes. Nevertheless, some sensilla exhibited various degrees of sexual dimorphism; for instance, sensilla trichodea, squamiformia, and basiconica were more abundant in males than in females. Many pores were observed on the surface of the cuticular wall in sensilla trichodea and auricillica, and their biological function may be related to olfaction. This study presented a thorough inventory of sensilla on the antennae of and laid a solid foundation for future functional studies.
触角感器在昆虫生命活动中起着至关重要的作用，因为它们接收环境线索。[昆虫名称]是中国一种重要的松树害虫，但关于其感器的形态和分布信息有限。为阐明昆虫与植物间化学通讯的机制，我们通过扫描电子显微镜检查了该昆虫的触角和感器。结果表明，[昆虫名称]的触角呈丝状，由基部的柄节、梗节和具逐渐变细鞭节的鞭节组成。我们鉴定出七种感器类型，包括毛形感器、腔锥感器、耳形感器、锥形感器、栓锥感器（两个亚型）、Böhm氏鬃毛和鳞形感器，所有这些感器均分布于两性触角上。然而，一些感器表现出不同程度的两性异形；例如，毛形感器、鳞形感器和锥形感器在雄性中比在雌性中更为丰富。在毛形感器和耳形感器的角质壁表面观察到许多小孔，其生物学功能可能与嗅觉有关。本研究全面清点了[昆虫名称]触角上的感器，为未来的功能研究奠定了坚实基础。
