Latest Cover

Online Office

Contact Us

Issue:ISSN 2095-1353
           CN 11-6020/Q
Director:Chinese Academy of Sciences
Sponsored by:Chinese Society of Entomological;institute of zoology, chinese academy of sciences;
Address:Chaoyang District No. 1 Beichen West Road, No. 5 hospital,Beijing City,100101, China
Your Position :Home->Past Journals Catalog->2023年60 No.6

Research on diapause termination in an overwintering population of Leguminivora glycinivorella (Lepidoptera: Olethreutidae)
Author of the article:REN Zhen-Tao, ZHAO Hai-Meng, ZHOU Yi-Jun, XUE Kun
Author's Workplace:Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission
Key Words:soybean pod borer; diapause; population parameter; parasitic enemies

Abstract  [Objectives]  To investigate the population dynamics of the soybean pod borer (SPB) Leguminivora glycinivorella after diapause termination. [Methods]  Diapause (4 ℃, RH80%, L∶D=0∶24) and diapause termination [(26±1) , RH80%, L∶D=16∶8] conditions were simulated in a laboratory and the effects of different diapause durations on the survival, pupation, eclosion and parasitism rate, were investigated. [Results]  Different diapause durations had no significant effect on the diapause intensity of SPBs; the average duration of diapause termination was 82 d. However, the longer the diapause duration, the less active SPBs became; 168 to 224 d of diapause was the duration required to produce a rapid decline in activity. Diapausing for this length of time caused the pupation rate to decrease from 21.9% to 1.9%, and the median survival time to decrease from 77 d to 35 d. The average emergence time of SPBs was 89 d compared to 60 d for their parasites, which indicates a degree of synchronization in diapause termination between parasites and host. [Conclusion]  At lower temperatures, SPB larvae can remain in diapause for a long time but under more suitable conditions larvae will develop and pupate after a shorter diapause period. These findings are helpful for predicting the frequency of occurrence of the SPB.

CopyRight©2024 Chinese Journal of Aplied Entomology