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Reproductive disruption induced by Beauveria bassiana in Frankliniella occidentalis as a potential long-term biocontrol strategy

文献类型： 外文期刊

作者： Zhang, Qikai 1 ; Wang, Dengjie 3 ; Liu, Sheng 2 ; Reitz, Stuart 4 ; Wang, Haihong 2 ; Lyu, Baoqian 1 ;

作者机构： 1.Minist Agr & Rural Affairs, Environm & Plant Protect Inst, Key Lab Integrated Pest Management Trop Crops, CATAS, Haikou, Peoples R China

2.Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, Inst Plant Protect, Beijing, Peoples R China

3.Mianyang Acad Agr Sci, Crop Characterist Resources Creat & Utilizat Key L, Key Lab Wheat Rice & Biol Breeding, Minist Agr & Rural Affairs, Mianyang, Sichuan, Peoples R China

4.Oregon State Univ, Malheur Expt Stn, Ontario, OR USA

关键词： WFT; Courtship behavior; Reproductive system; Fecundity; B. Bassiana

期刊名称：PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：4.0； 五年影响因子：4.5 ）

ISSN： 0048-3575

年卷期： 2025 年 212 卷

页码：

收录情况： SCI

摘要： Frankliniella occidentalis (WFT) has a haplodiploid sex determination system, enabling sexual and parthenogenetic reproduction, leading to rapid population growth and posing a serious threat to global agriculture. The entomopathogenic fungus Beauveria bassiana is an important biocontrol agent available for use against WFT; however, previous research has primarily focused on its acute lethal effects, with limited attention to its longterm impacts on the thrips' reproductive capacity. In this study, we investigated three key reproductive changes in WFT following infection by B. bassiana: courtship behavior, female reproductive system, and fecundity. We found that infected males exhibited a reduced frequency of behaviors associated with successful courtship, while infected females displayed increased rejection behaviors. Infected females also showed a significant reduction in mature egg formation and ovariole tube length. Moreover, the fecundity of infected WFT was diminished, and the sex ratio of the offspring was skewed towards males. Overall, B. bassiana infection significantly impairs the reproductive capacity of WFT, highlighting its potential use in a long-term biocontrol strategy against this pest.

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