摘要
后斑小瓢虫是竹茎扁蚜最重要的捕食性天敌之一,本文描述了其各虫态各龄期的形态特征,并对其生物学特性进行了观察,发现后斑小瓢虫在福建武夷山一年发生4~5代,有世代重叠现象,从卵发育到成虫约需21 d,成虫寿命一般为26 d,幼虫和成虫都有捕食性。每年4月下旬至6月下旬虫口数量达到高峰。研究可为野外快速辨认该种瓢虫和天敌资源利用提供参考。
Scymnus(Pullus) posticalis is one of the most important predatory natural enemies of the Aphid Pseudoregma bambusicola. This paper describes the characteristics of each stage and instar of S. posticalis and observes its biological characteristics. There are 4-5 generations a year in Wuyi Mountain, Fujian Province, with overlapping generations. It takes about 21 days from egg to adult, and the life span of adult is generally26 days. Both larvae and adult are predatory. The population developed highest from late April to late June each year. This study could provide a reference for the rapid identification of this ladybird in the wild and was worthy to the resource utilization of natural enemies.
作者
郭文燕
GUO Wenyan(Wuyishan City Forestry Bureau,Wuyishan 354300,Fujian,China)
出处
《福建林业》
2022年第6期23-25,共3页
Fujian Forestry
基金
福建省林业科技项目(闽林科便函﹝2019﹞16号)。
作者简介
郭文燕(1973-),女,工程师,主要从事林业种苗培育及病虫害防治等工作。E-mail:26350587@qq.com。
