长足大竹象呼吸系统的超微结构研究  

The Ultrastructure of Respiratory System of Cyrtotrachelus buqueti Guer

作　　者：邓福相 郭庆 龙文聪 杨海波 杨瑶君[2] DENG Fuxiang;GUO Qing;LONG Wencong;YANG Haibo;YANG Yaojun(Forestry and Grassland Bureau of Leibo County,Liangshan 616550,China;Key Laboratory of Bamboo Diseases and Pests Control and Resources Development of Sichuan Province,College of Life Science,Leshan Normal University,Leshan 614000,China)

机构地区：[1]雷波县林业和草原局,四川凉山616550 [2]乐山师范学院生命科学学院,竹类病虫防控与资源开发四川省重点实验室,四川乐山614000

出　　处：《四川林业科技》2020年第2期100-107,共8页Journal of Sichuan Forestry Science and Technology

基　　金：国家自然科学基金面上项目(31470655)。

摘　　要：应用形态解剖、体视显微和扫描电镜技术,观察了长足大竹象幼虫、蛹、成虫三个发育阶段呼吸系统的形态结构及特点,以期为研究长足大竹象的生物学特性及系统分类提供理论依据。研究结果表明长足大竹象幼虫、蛹及成虫具有发达、完整、严密的四级气管系统,并且气管内壁富有弹力并有抵抗压力能力的螺旋丝形成网状结构,成虫具有气囊和明显的气门结构;幼虫和蛹无气囊和气门,但在幼虫体表发现疑似气管口的结构;成虫体表共9对气门,胸部2对,腹部7对,仅中胸1对气门为外闭式,其余气门均为内闭式气门,气门从胸部到腹部显著变小;三个时期虫态的呼吸系统结构的差异是与其生活环境相适应。本研究对深入分析长足大竹象的呼吸行为以及呼吸结构与生长发育和生活习性的关系具有重要意义,同时丰富了长足大竹象形态学的内容,为象甲科昆虫系统分类提供理论依据。In order to provide theoretical basis for the study of biological characteristics and systematic classification of Cyrtotrachelus buqueti Guer, the morphological anatomy, stereomicroscopy and scanning electron microscopy method were used to observe the morphological structure and characteristics of the respiratory system in the larva, pupa and adult stages of C. buqueti. The results showed that the larvae, pupae and adults of C. buqueti had developed integrated and strict four-stage tracheal system, and the inner wall of trachea was elastic and the spiral filaments formed a network structure which has the ability to resistant to stress. The adult had air sac and obvious spiracle structures.There were 9 pairs of spiracles on the adults’ body surface, 2 pairs of spiracles on the chest and 7 pairs of spiracles on the abdomen. Only one pair of spiracle on the middle chest was the external closed type, and the rest were the internal closed type. The spiracles were significantly smaller from the chest to the abdomen. The difference of respiratory system structure in the three stages was adapted to its living environment. The study was of great significance to the indepth analysis of the relationship between the respiratory behavior, respiratory structure, growth, development and living habits of C. buqueti. It also enriched the morphological content of C. buqueti and provided theoretical basis for the systematic classification of weevil insects.

关 键 词：长足大竹象 呼吸系统 扫描电镜 气门结构 气管系统 

分 类 号：S763.38[农业科学—森林保护学]