梧桐木虱各龄若虫蜡腺和蜡泌物超微结构观察  

Ultrastructure of waxy glands and waxy secretions in nymphs of Carsidara limbata( Hemiptera: Carsidarinae)

作　　者：李嘉乐 任利利[1] 骆有庆[1] LI Jia-Le;REN Li-Li;LUO You-Qing(Beijing Key Laboratory for Forest Pest Control,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]北京林业大学林木有害生物防治北京市重点实验室,北京100083

出　　处：《昆虫学报》2018年第7期825-834,共10页Acta Entomologica Sinica

基　　金：国家自然科学基金青年科学基金项目(31500529);北京市科技计划"影响北京生态安全的重大钻蛀性害虫防控技术研究与示范"(Z171100001417005)

摘　　要：【目的】梧桐木虱Carsidara limbata是一种严重危害梧桐Firmiana simplex的害虫,观察并明确若虫蜡泌物及不同虫龄泌蜡腺体超微形态特征,有助于为其生长发育的相关研究提供理论依据。【方法】本研究依据梧桐木虱若虫形态特征变化划分样本虫龄,使用体视显微镜和扫描电镜(SEM)观察若虫蜡泌物及不同虫龄泌蜡腺体的超微形态结构特征。【结果】结果表明,梧桐木虱若虫泌蜡腺体主要分为两类:一类为泌蜡小孔,3-5龄若虫体壁出现此结构;另一类为规则或不规则圆形多孔蜡腺孔,该结构1龄若虫极少或无,其他虫龄均有分布。低龄若虫孔腺数目和类型较老龄少。若虫蜡泌物分为4种类型,即丝状蜡丝、空心"C"形蜡丝、弹簧状蜡丝、空心长蜡丝。此外,腹部末端有环肛孔环结构,腹部背腹面遍布微刺及各类刚毛。【结论】梧桐木虱若虫有4类蜡泌物和2类泌蜡腺体,随虫龄不同其类型和分布存在差异。本研究为裂木虱科害虫泌蜡器官的研究提供了参考依据。【Aim】Carsidara limbata is an insect pest that seriously damages Firmiana simplex.Observation and identification of the ultra-morphology of waxy secretions and waxy glands in C.limbata nymphs of different instars would provide a theoretical basis for the future studies on its growth and development.【Methods】The nymphal instars of C.limbata were determined by morphological characteristics,and the ultrastructure of waxy secretions and waxy glands in nymphs of different instars were observed using stereomicroscope and scanning electron microscopy(SEM).【Results】Waxy glands of C.limbata nymphs are divided into two types:one is wax-secreting pore,appearing on the integument since the 3rd instar nymph;the other is regular or irregular circular porous gland,rarely distributed in the 1st instar nymph.The gland amounts and types in late instar nymphs were more than those in early instars.Waxy secretions can be divided into four types,i.e.,filamentous wax filament,hollow C-shaped wax filament,spring crimp wax filament,and hollow long wax filament.In addition,there is a circumferential hole ring at the end of the abdomen,and micro-thorn and various types of setae are distributed all over the dorsal and ventral surface of abdomen.【Conclusion】C.limbata nymph has four types of waxy secretions and two types of waxy glands.Their types and distribution are different among different nymphal instars.This study provides a reference for the study of waxy organs in Carsidaridae.

关 键 词：梧桐木虱 若虫 蜡腺 蜡泌物 超微结构 

分 类 号：Q964[生物学—昆虫学]