摘要
为明确核桃扁叶甲幼虫的发育状况,以便进行预测预报及采取防治措施,通过测量不同时间段核桃扁叶甲幼虫的体长、体宽、头宽和角长等4项形态指标,运用频数分布法和Crosby生长法推断核桃扁叶甲幼虫的龄数,并对其发育中各个龄期幼虫的取食量进行了测定。结果表明:核桃扁叶甲幼虫共有3龄,头宽是最佳的幼虫分龄指标,体长、体宽和角长则不适合作为分龄指标;幼虫取食量随龄期的增大而增加,且增加十分明显;幼虫取食造成危害的主要阶段为3龄幼虫期,日平均取食量随天数的增加而增大,最高峰是在孵化后的第12天。
In order to determine the development status of Gastrolina depressa larvae,it is useful to forecast and take preventive measures.In this paper,the body length,body width,head width and horn length of the larvae were mea⁃sured at different time periods,and the age number of the larvae was deduced by frequency distribution method and Crosby growth method.The results showed that there were 3 ages of larvae in total,and the head width was the best age index,but the body length,body width and horn length were not suitable as age indexes.The feeding amount of larvae increases with the increase of age,and the increase of feeding amount is very obvious.The average daily food intake increased with the number of days,and peaked at 11 to 12 days after hatching.
作者
刘童童
邱建生
LIU Tongtong(Guizhou Academy of Forestry,Guiyang 550005,China)
出处
《安徽农学通报》
2021年第20期95-97,104,共4页
Anhui Agricultural Science Bulletin
基金
贵州省科技厅基础研究计划“溴氰菊酯对核桃扁叶甲亚致死效应研究”(黔科合基础[2017]1099)
黔科合平台人才贵州省重要经济树种生物影响因子调控技术研究科技创新人才团队[2018]5610。
关键词
核桃扁叶甲
龄数
取食量
Gastrolina depressa Baly
Instar
Feeding amount
作者简介
刘童童(1988-),男,山东青岛人,硕士,助理研究员,从事森林病虫害防治工作。
