小线角木蠹蛾幼虫龄数的划分
Division of larval instars of Streltzoviella insularis
信晓萌 1韩世德 1王勇 2张殿福 2马玉龙 2刘玉喜2
作者信息
- 1. 潍坊市林业发展中心, 山东 潍坊 261041
- 2. 寿光市林业发展中心, 山东 寿光 262700
- 折叠
摘要
为了确定自然条件下小线角木蠹蛾Streltzoviella insularis幼虫的龄数,从野外定时采集小线角木蠹蛾幼虫,测量其头壳宽、体长、体宽、前胸背板宽、上颚长、上颚宽6项指标,利用变异系数、Brooks指数、Grosby指数、频次分布图进行统计分析,并建立6项指标的回归方程.结果表明,小线角木蠹蛾幼虫13龄,头壳宽是判定小线角木蠹蛾幼虫龄数的最佳指标;并确定了各龄幼虫的龄期.结果可为小线角木蠹蛾发生规律的研究和防控方案的准确制定提供理论参考.
Abstract
In order to determine the instar number of Streltzoviella insularis larvae under natural conditions,the larvae of S.insularis were collected in field at regular intervals,and the six indexes including head capsule width,body length,body width,pronotum width,mandible length and mandible width were measured,the regression equations of the six indexes were established by using the variance coefficient,Brooks index,Grosby index and frequency distribution graph.The results showed that S.insularis larvae had 13 instars and the head capsule width was the best index to determine the instar number of S.insularis larvae,the stadia of the larvae were determined.These results can provide a theoretical reference for the study of the occurrence regularity of S.insularis and the accurate formulation of prevention and control programs.
关键词
小线角木蠹蛾/幼虫龄数/Brooks指数/Grosby指数/分龄指标/龄期Key words
Streltzoviella insularis/larval instar/Brooks index/Grosby index/indicator separating instar/stadium引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据