摘要
通过试验对美国白蛾Hyphantria cunea(Drury)幼虫阶段的部分特性进行了观察研究。观察内容包括幼虫体表毛瘤变化特性,各不同龄期阶段的幼虫体表上的刚毛特征,提供了体色、体长、斑纹特征以外的识别幼虫种类的体表特征,以及不同龄期幼虫的龄期识别特征,特别是形态相似的1龄与2龄幼虫的区别特征。由于各世代中的末龄幼虫最大龄期数不尽一致,通过饲养观察,初步明确了春季美国白蛾幼虫在天津的最大龄期数。对天津市区幼虫的发生期和滞育蛹的形成情况进行了观察分析。
In this experiment, observation on some larvae＇s characteristics of Hyphantria cunea was conducted. Main contents were including observation on the various distribution design of the larvae＇s verruca and setae on cuticle in different stadium, and these design for recognizing marks on the cuticle to distinguish Hyphantria cunea except those characteristics such as body color, length and maculation. It also provided the characteristics of recognizing the larvae stadium, especially to distinguish first from second instar stage larvae with similar morphological characters. Due to the different instar number of the larvae occurred in various insect generations, during the raising experiment, the largest instar number of the larvae in spring season in Tianjin city was preliminarily found. Analysis and observation on the occurrence time of larvae and diapauses pupae were also carried out.
出处
《天津农业科学》
CAS
2015年第9期167-170,共4页
Tianjin Agricultural Sciences
基金
天津市大学生创新创业训练计划项目"白僵菌防治害虫的侵染机理"(20140061094)
天津市普通高等学校本科教学质量与教学改革研究计划项目(B01-0901)
关键词
美国白蛾
幼虫
龄期
天津
Hyphantria cunea
Larvae
stadium
Tianjin
