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Temperature and Photoperiodic Response of Diapause Induction in Anastatus japonicus, an Egg Parasitoid of Stink Bugs

文献类型： 外文期刊

作者： Zhao, Can 1 ; Guo, Yi 1 ; Liu, Zixin 2 ; Xia, Yue 1 ; Li, Yuyan 3 ; Song, Ziwei 1 ; Zhang, Baoxin 1 ; Li, Dunsong 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Plant Protect Res Inst, Guangdong Prov Key Lab High Technol Plant Protect, Guangzhou 510640, Peoples R China

2.South China Agr Univ, Coll Plant Protect, Dept Entomol, Lab Biopesticide Creat & Applicat Guangdong Prov, Guangzhou 510642, Peoples R China

3.Chinese Acad Agr Sci, Inst Plant Protect, Minist Agr, Key Lab Integrated Pest Management Crops, Beijing 100193, Peoples R China

关键词： Eupelmidae; biological control; diapause; sensitive stage; storage

期刊名称：INSECTS （ 影响因子：2.769； 五年影响因子：3.046 ）

ISSN：

年卷期： 2021 年 12 卷 10 期

页码：

收录情况： SCI

摘要： Simple Summary: Anastatus japonicus Ashmead is an important egg parasitoid wasp and natural enemy of Tessaratoma papillosa. It is commercially used in biological control, and has effectively suppressed T. papillosa population for decades in China. In practice, medium temperature in spring always induces diapause in A. japonicus, leading to the delay of adult emergence and missing the best chance to control the pest. Accurately regulating the development of A. japonicus is a key technique for the production of biocontrol agents and field release applications. In this study, responsible environmental factors for the induction of diapause in A. japonicus were investigated. A short photoperiod and medium temperature led to diapause in A. japonicus. Second-third instar larva are the most sensitive stages to diapause stimuli. Diapausing mature larvae had a significantly higher survival rate after 180 days storage at 10 & DEG;C than that of nondiapausing mature larvae. Taken together, results suggest methods that could be exploited in the developmental regulation, field-release pretreatment technology, and long-term storage of A. japonicus.


Anastatus japonicus Ashmead is a widely used biological control agent against stink bugs that can be successfully reared using the large eggs of the Chinese silkworm. In this study, environmental factors responsible for the induction of diapause in A. japonicus were investigated on host eggs of the Chinese silkworm. A. japonicus exhibited a facultative, mature larval diapause within its host eggs. Second-third instar larva are the most sensitive stages to diapause stimuli. The accumulation of diapause stimuli during all the larval stages maximized the diapause response. A short photoperiod of 10L:14D and temperature of 17 & DEG;C led to the occurrence of the highest diapause response, while a long photoperiod (14L:10D) and low temperatures (11 and 14 & DEG;C) prevented the diapause. A specific exposure period was required to reach high diapause incidence. Diapausing mature larvae had a significantly higher survival rate after 180 days storage at 10 & DEG;C than that of nondiapausing mature larvae. Taken together, results suggest methods that could be exploited in the developmental regulation, field-release pretreatment technology, and long-term storage of A. japonicus.

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