红树林自然保护区无瓣海桑主要害虫及其寄生性天敌种类调查研究

2009～2011年,采用平行取样法,在广西钦州康熙岭红树林自然保护区无瓣海桑纯林内,对无瓣海桑主要害虫及其寄生性天敌进行调查,分叶部、枝梢及蛀干害虫,按轻、中、重3级划分危害程度,结果表明,在研究地调查收集到无瓣海桑害虫种类共4目13科21种,其中绿黄枯叶蛾、木麻黄枯叶蛾、迹斑绿刺蛾、白囊袋蛾和荔枝茸毒蛾是无瓣海桑的主要害虫,均为食叶类害虫。并收集了危害无瓣海桑较严重的绿黄枯叶蛾及木麻黄枯叶蛾的寄生性天敌,共2目4科8种,其中绿黄枯叶蛾卵的寄生蜂,寄生率达67.3%。因此,保护和利用天敌是无瓣海桑害虫防治的有效方法。

Investigation on Major Insect Pests of Sonneratia apetalaand Parasitoids in Mangrove Nature Reserve

In 2009~2011,parallel sampling method was used to investigate major insect pests on Sonneratia apetala and its parastoids in Kangxiling mangrove nature reserve in Qinzhou,Guangxi.The results showed that there were 21 species of the pests on Sonneratia apetala,which belonged to 4 orders and 13 families.The major pests were Trabala vishnou,Ticera castanea,Latoia pastorlis（Butler）,Chalioides kondonis and Dasychira sp.,which were all leaf-eating pests.Meanwhile,2 orders,4 families,8 species of the parasitoids of two major pests,Trabala vishnou and Ticera castanea,were also collected.The parasitic rate of the parasitoid of Trabala vishnou was 67.3%.Therefore,protecting and utilizating natural enemy was an effective way to control insect pests on Sonneratia apetala.