低温贮藏对布氏潜蝇茧蜂生物学特性的影响

Effect of Cold Storage on the Biological Characteristics of Fopius vandenboschi(Fullaway)

布氏潜蝇茧蜂是橘小实蝇等多种实蝇害虫的重要寄生性天敌。为满足生物防治所需的大量虫源,常常需要对分批饲养的布氏潜蝇茧蜂蛹进行贮藏备用。因此,本文研究了贮藏温度及贮藏时间对不同蛹龄布氏潜蝇茧蜂羽化的影响,基于此,进一步研究了4个低温贮藏处理对羽化成虫生物学特性的影响。结果表明,贮藏温度、时间、蛹龄及其交互作用对布氏潜蝇茧蜂的羽化率具有显著影响,仅9日龄蛹在13℃下贮藏10 d及15 d后对其羽化率无显著影响,分别为73.10%及68.31%。此外,进一步研究表明上述两种冷藏处理对布氏潜蝇茧蜂羽化成虫的干重、飞行能力、寿命、繁殖子代数及生命表参数不产生任何负面影响。本研究对优化布氏潜蝇茧蜂的低温贮藏技术具有参考价值。

Fopius vandenboschi(Fullaway)is an important parasitic wasp of Bactrocera dorsalis and several other tephritid pests.To meet the large demand of biocontrol agents for biological control program,it is necessary to store F.vandenboschi at low temperatures.In this study,we determined the impacts of cold temperature and storage duration on the emergence parameters of F.vandenboschi pupae at different ages.Then,four optimum pupal storage protocols were developed and evaluated for their impacts on the biological characteristics of post-storage adults.Our results showed that temperature,storage duration,pupal age and their interactions all significantly affected the emergence rate of F.vandenboschi.Emergence rate was not negatively affected only when 9-day old pupae were stored at 13℃for 10 d or 15 d,which were 73.10%and 68.31%,respectively.The two cold storage protocols showed no negative effects on the dry weight,flight capacity,longevity,fecundity and life table parameters of post-storage adults.This study serves as a reference for optimizing the cold storage technique of F.vandenboschi.