利用昆虫病原真菌和外寄生螨对贮藏马铃薯块茎蛾进行可持续管理

IF 3.8 1区农林科学 Q1 AGRONOMY

Pest Management Science Pub Date : 2024-12-12 DOI:10.1002/ps.8583

Yan-Fei Song, Shuai Ye, Xiong Zhao He, Bing-Xia Feng, Wan-Hao Chen, Mao-Fa Yang, Jian-Feng Liu, Yu-Lin Gao

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引用次数: 0

摘要

马铃薯块茎蛾（Phthorimaea operculella）是世界马铃薯作物的重要经济害虫。迄今为止，化学农药的使用是治理PTM的主要措施，但它对环境和人类健康造成了严重的有害影响。本研究筛选了对PTM具有致死作用的昆虫病原真菌，并测试了它们对PTM发育、死亡和繁殖的亚致死影响，以及对PTM天敌外寄生螨（Pyemotes zhonghuajia）的亚致死影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Sustainable management of potato tuber moth in storages using entomopathogenic fungi and an ectoparasitic mite

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Sustainable management of potato tuber moth in storages using entomopathogenic fungi and an ectoparasitic mite

BACKGROUND

The potato tuber moth (PTM), Phthorimaea operculella, is an economically important pest of potato crops worldwide. So far, the application of chemical pesticides is the major measure to manage PTM, but it induces serious deleterious impacts on the environment and human health. Here, we screened the entomopathogenic fungi that are lethal to PTM, and tested their sublethal impacts on PTM development, mortality, and reproduction as well as that of ectoparasitic mite Pyemotes zhonghuajia, a natural enemy of PTM.

RESULTS

Among 13 tested entomopathogenic fungal strains in three genera, Beauveria Vuillemin, Cordyceps Fries, and Talaromyces Benjamin, Cordyceps fumosorosea (strain KY1136) and Beauveria bassiana (strain KY1115) caused a significantly higher mortality in PTM eggs, larvae, and pupae. Median lethal concentration (LC₅₀) of both strains prolonged PTM immature development, shortened adult longevity, and reduced fecundity and life table parameters in terms of intrinsic rate of increase (r_m), net reproductive rate (R₀), and finite rate of increase (λ). The LC₅₀ value of KY1136 (1.9 × 10⁶ spores/mL) was lower than that of KY1115 (9.0 × 10⁶ spores/mL), indicating the greater potential for biological control of PTM by KY1136. Both strains had no significant impact on P. zhonghuajia survival and reproduction. Increasing P. zhonghuajia density reduced PTM feeding and pupation rate, while the combined application of P. zhonghuajia and entomopathogenic fungi had no additional effect in inhabiting PTM feeding and pupation.

CONCLUSION

Entomopathogenic fungal strains Cordyceps fumosorosea KY1136 and Beauveria bassiana KY1115 are the potential biological control agents of PTM, but do not impose a negative impact on the natural enemy. Our study provides insights into the integrated pest management of PTM by combining the entomopathogenic fungi and an ectoparasitic mite. © 2024 Society of Chemical Industry.

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来源期刊

Pest Management Science 农林科学-昆虫学

CiteScore

7.90

自引率

9.80%

发文量

553

审稿时长

4.8 months

期刊介绍： Pest Management Science is the international journal of research and development in crop protection and pest control. Since its launch in 1970, the journal has become the premier forum for papers on the discovery, application, and impact on the environment of products and strategies designed for pest management. Published for SCI by John Wiley & Sons Ltd.