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Trichogramma chilonis is a promising biocontrol agent against Tuta absoluta in China: results from laboratory and greenhouse experiments

文献类型： 外文期刊

作者： Li, Xiaowei 1 ; Chen, Tingting 1 ; Chen, Limin 1 ; Ren, Jie 3 ; Ullah, Farman 1 ; Yi, Songwang 1 ; Pan, Yuhan 1 ; Zhou, Shuxing 1 ; Guo, Wenchao 4 ; Fu, Kaiyun 4 ; Li, Yuan-Xi 2 ; Lu, Yaobin 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, State Key Lab Managing Biot & Chem Threats Qual &, Key Lab Biotechnol Plant Protect MOA China & Zheji, Hangzhou 310021, Peoples R China

2.Nanjing Agr Univ, Coll Plant Protect, Dept Entomol, Nanjing 210095, Peoples R China

3.Tarim Univ, Coll Agr, Alar 843300, Peoples R China

4.Xinjiang Acad Agr Sci, Inst Plant Protect, Key Lab Integrated Pest Management Crops Northwest, Xinjiang Key Lab Agr Biosafety Urumqi, Xinjiang 830091, Peoples R China

5.Xianghu Lab, Hangzhou 311231, Peoples R China

关键词： South American tomato pinworm; augmentative biological control; Trichogramma dendrolimi; T. japonicum; T. ostriniae; parasitism rate; release density; release pattern

期刊名称：ENTOMOLOGIA GENERALIS （ 影响因子：6.9； 五年影响因子：5.2 ）

ISSN： 0171-8177

年卷期： 2024 年 44 卷 2 期

页码：

收录情况： SCI

摘要： Tuta absoluta, an economically important pest threatening the global production of tomato crops worldwide, has recently invaded China. Owing to insecticide resistance, alternative control options are needed within the context of integrated pest management (IPM) programs. Augmentative biological control using indigenous natural enemies is a promising tactic for managing T. absoluta in newly invaded areas. In this study, the host suitability of four commercialized Trichogramma parasitoids in China (T. dendrolimi, T. japonicum, T. chilonis, and T. ostriniae) on T. absoluta eggs was evaluated in laboratory conditions. The control effectiveness of the most promising Trichogramma species was further tested at different release densities and frequencies in a greenhouse experiment. We found that T. chilonis was the most promising species parasitizing T. absoluta eggs, showing the highest parasitism rate, emergence rate, and female offspring sex ratio. The greenhouse experiment indicated that 600,000 parasitoids/hectare (20 parasitoids/plant) was the most effective release density, reaching 76% control effectiveness. Release frequency significantly affected the parasitism rate in the greenhouse. Two releases of 300,000 parasitoids/hectare on Day 1 and Day 4 was the most effective strategy, compared to one release of 600,000 parasitoids/hectare on Day 1. Our findings showed that augmentative biological control of T. absoluta by native Trichogramma parasitoids T. chilonis in China is feasible, and it could be included as part of IPM package against T. absoluta in China.

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