无瓣海桑害虫绿黄枯叶蛾的生物学特性

Biological Characteristics of Trabala vishnou Lefebure in Sonneratia apetala Buch-Ham

[目的]了解无瓣海桑害虫绿黄枯叶蛾(Trabala vishnou Lefebure)的生物学特性。[方法]采用野外调查、林间套笼观察和室内饲养观察相结合的方法,对广西钦州康熙岭红树林自然保护区绿黄枯叶蛾的形态特征、生物学特性和天敌进行了调查。[结果]绿黄枯叶蛾在广西钦州红树林自然保护区1年发生4～5代,每代发育历期平均为57.64 d,卵、老熟幼虫及蛹均可越冬;12月开始出现越冬卵、幼虫和蛹。[结论]为绿黄枯叶蛾的预测与防治提供了理论依据。

[Objective] The paper was to understand the biological characteristics of Trabala vishnou Lefebure.[Method] Using the combination methods of field survey,caged observation in forest and indoor rearing observation,the morphological characteristics,biological characteristics and natural enemies of T.vishnou Lefebure in Qinzhou Kangxiling Mangrove Natural Reserve in Guangxi Province were investigated.[Result] T.vishnou Lefebure occurred for 4-5 generations each year in Qinzhou Mangrove Nature Reserve of Guangxi,the development duration of each generation averagely was 57.64 d.The pest survived the winter as eggs,mature larvae or pupae,and the overwintering eggs,mature larvae and pupae began to occur in December.[Conclusion] The study provided a scientific theoretical foundation for the prediction and control of T.vishnou Lefebure.