生物安全学报（中英文）2025，Vol.34Issue(2)：197-204,8.DOI:10.3969/j.issn.2095-1787.20240014
蔗根土天牛成虫口器的超微结构
Mouthpart structure and sensilla of the adult of Dorysthenes granulosus(Thomson)(Coleoptera:Cerambycidae)
摘要
Abstract
[Aim]Dorysthenes granulosus is an important agricultural and forestry pest.However,the D.granulosus adults hardly feed.It is urgent to study whether there is any difference in the mouthpart structure and sensilla between the D.granulosus adults and the adult longhorn beetles that need feeding.It is beneficial to better understand the sensory mechanism of longhorn beetles by explo-ring the structural morphology of its mouthparts and the distribution characteristics of sensilla.[Method]In this study,the ultra-structure of the mouthparts of the adult D.granulosus was observed by scanning electron microscope,and the type,morphology,and distribution of the sensilla were analyzed.[Result]The mouthparts of the adult D.granulosus were composed of five parts:the la-brum,mandibles,maxilla,labium,and ligula.The ligula,lacinia,and gelea of the maxilla were seriously degraded.A large num-ber of sensilla trichodea(ST)were distributed on the dorsal side of the mandibles,and only one type of sensilla basiconca 1(SB1)was found on the epipharynx.Maxillary and labial palps had the widest distribution and the largest number of sensilla.There were five types of sensilla:sensilla trichodea(ST),hair plate(HP),sensilla placodea(SP),sensilla coeloconica(SCo)and sensilla basiconca(SB).There were two subtypes of ST and five subtypes of SB.[Conclusion]Due to non-feeding,many structures of the mouthparts of the D.granulosus are degraded.The sensilla type is similar to that of longhorn beetles with feeding habits.The number of sensilla on the epipharynx and the STs on the surface of the maxillary and labial palps are significantly lower,and there are more sensilla on the ends of the maxillary and labial palps.This study will provide basic data for further understanding the functional mor-phology of the mouthparts and the sensory mechanism of longhorn beetles.关键词
蔗根土天牛/昆虫口器/扫描电镜/超微结构/感器功能Key words
Dorysthenes granulosus/insect mouthparts/scanning electron microscopy/ultrastructure/function of sensilla引用本文复制引用
刘长泰,管凯华,佟心..蔗根土天牛成虫口器的超微结构[J].生物安全学报（中英文）,2025,34(2):197-204,8.基金项目
国家自然科学基金(32200361) （32200361）
