An entomopathogenic strain of Beauveria bassiana (hypocreales: Cordycipitaceae) against Eotetranychus kankitus (acarina: Tetranychidae) and its compatibility with Neoseiulus barkeri (acarina: Phytoseiidae)
文献类型： 外文期刊
作者： Liu, Mingxiu 1 ; Xiang, Dong 3 ; Feng, Xiaotian 1 ; Li, Xuanliang 1 ; Wang, Mian 1 ; Wang, Zhen 3 ; Chen, Hanqiu 3 ; Liu, Huai 1 ; Li, Yaying 1 ;
作者机构： 1.Southwest Univ, Coll Plant Protect, Key Lab Agr Biosafety & Green Prod Upper Yangtze R, Key Lab Entomol & Pest Control Engn, Chongqing 400716, Peoples R China
2.Southwest Univ, Yibin Acad, Yibin 644000, Peoples R China
3.Tibet Acad Agr & Anim Husb Sci, Inst Vegetable, Lhasa 850032, Peoples R China
关键词： Biological control; citrus yellow mite; entomopathogenic fungus; predatory mite; selectivity
期刊名称：BULLETIN OF ENTOMOLOGICAL RESEARCH （ 影响因子：1.6； 五年影响因子：1.7 ）
ISSN： 0007-4853
年卷期： 2025 年 115 卷 2 期
页码：
收录情况： SCI
摘要： Eotetranychus kankitus is an important pest on several agricultural crops, and its resistance to pesticides has promoted the exploration of biological control strategies. Beauveria bassiana and Neoseiulus barkeri have been identified as potential agents for suppressing spider mites. This study aimed to investigate the pathogenicity of B. bassiana on E. kankitus and its compatibility with N. barkeri. Results showed that among the five tested strains of B. bassiana, Bb025 exhibited the highest level of pathogenicity on E. kankitus. Higher application rates (1 x 108 conidia/mL) of Bb025 led to a higher mortality rate of E. kankitus (90.402%), but also resulted in a 15.036% mortality of N. barkeri. Furthermore, preference response tests indicated that both E. kankitus and N. barkeri actively avoided plants sprayed with Bb025 compared to the control group that was sprayed with Tween-80. In a no-choice test, we observed that N. barkeri actively attacked Bb025-treated E. kankitus with no adverse effect on its predatory capacities. Furthermore, N. barkeri laid more eggs when fed on Bb025-treated E. kankitus compared to Tween-80-treated E. kankitus, but the subsequent generation of surviving individuals fed on Bb025-treated E. kankitus was reduced. These findings demonstrate that the Bb025 strain of B. bassiana is highly virulent against E. kankitus while causing less harm to N. barkeri. Consequently, a promising strategy for controlling E. kankitus could involve the sequential utilisation of Bb025 and N. barkeri at appropriate intervals.
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