Selective and persistent toxicity of seven insecticides to five egg parasitoids of Spodoptera frugiperda
Abstract Background Spodoptera frugiperda, a major migratory and invasive pest, inflicts significant yield loss on rice and maize in China. As part of an integrated pest management system, biological control agents can be used against S. frugiperda, especially egg parasitoids. However, limited evide...
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2024-01-01
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| Online Access: | https://doi.org/10.1186/s43170-023-00205-y |
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| author | Hao-Ran Li Cheng-Yang Li Peng Dai Lian-Sheng Zang Nicolas Desneux Wei Xu |
| author_facet | Hao-Ran Li Cheng-Yang Li Peng Dai Lian-Sheng Zang Nicolas Desneux Wei Xu |
| author_sort | Hao-Ran Li |
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| description | Abstract Background Spodoptera frugiperda, a major migratory and invasive pest, inflicts significant yield loss on rice and maize in China. As part of an integrated pest management system, biological control agents can be used against S. frugiperda, especially egg parasitoids. However, limited evidence exists regarding the combined and persistent effects of various pest control products on those parasitoids. Results This study examined the selective and persistent toxicity of seven approved pesticides [chlorantraniliprole, lufenuron, emamectin benzoate, spinetoram (synthetic pesticides), Mamestra brassicae Nuclear Polyhedrosis Virus (MabrNPV), Bacillus thuringiensis (Bt) (biopesticides) and a chlorantraniliprole-lufenuron mixture (3:1) treatment] to five species of egg parasitoids, namely Trichogramma dendrolimi, Trichogramma chilonis, Trichogramma mwanzai, Trichogrammatoidea lutea, and Telenomus remus. The residual toxicity tests revealed that spinetoram showed high toxicity to T. mwanzai, T. dendrolimi, and T. chilonis in adults stage with mortality of over 92.6%, but caused low mortality in T. lutea (64.9%) and T. remus (49.2%) when used at the recommended rate. However, after treated by chlorantraniliprole, lunefuron, chl. + luf. (3:1), MabrNPV, and Bt, the mortality rates of all tested parasitoid adults were below 25% (lunefuron lower than 10%). A 3-day emamectin benzoate treatment caused 90% mortality in T. mwanzai, T. lutea, T. dendrolimi, and T. chilonis adults. The 3:1 mixture of chlorantraniliprole and lufenuron did not affect the lifespan of T. mwanzai and T. lutea. Chlorantraniliprole exhibited exceptional safety for all developmental stages (adult, egg, and pupa) of the five egg parasitoid species. A risk analysis indicated that chlorantraniliprole, MabrNPV, Bt, and the 3:1 mixture had the least toxicity to the five tested parasitoid adults, followed by lufenuron. Conversely, spinetoram and emamectin benzoate displayed moderate toxicity to adults of all tested parasitoid species. Conclusion Our findings indicate that chlorantraniliprole is safe for the five egg parasitoids species studied even after prolonged use and can be used in conjunction with lufenuron. However, spinetoram and emamectin benzoate had the potential to be harmful to these parasitoids. |
| format | Article |
| id | doaj-art-af2fade4c23d4e1cafafc1dd6dbacd44 |
| institution | Kabale University |
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| spelling | doaj-art-af2fade4c23d4e1cafafc1dd6dbacd442025-02-03T10:57:36ZengCABICABI Agriculture and Bioscience2662-40442024-01-015111310.1186/s43170-023-00205-ySelective and persistent toxicity of seven insecticides to five egg parasitoids of Spodoptera frugiperdaHao-Ran Li0Cheng-Yang Li1Peng Dai2Lian-Sheng Zang3Nicolas Desneux4Wei Xu5Institute of Biological Control, Jilin Province Technology Research Center of Biological Control Engineering, Jilin Provincial International Cooperation Key Laboratory for Biological Control of Agricultural Pests, Jilin Agricultural UniversityInstitute of Biological Control, Jilin Province Technology Research Center of Biological Control Engineering, Jilin Provincial International Cooperation Key Laboratory for Biological Control of Agricultural Pests, Jilin Agricultural UniversityInstitute of Biological Control, Jilin Province Technology Research Center of Biological Control Engineering, Jilin Provincial International Cooperation Key Laboratory for Biological Control of Agricultural Pests, Jilin Agricultural UniversityNational Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou UniversityUniversité Côte d’Azur, INRAE, CNRS, UMR ISACollege of Plant Protection, Jilin Agricultural UniversityAbstract Background Spodoptera frugiperda, a major migratory and invasive pest, inflicts significant yield loss on rice and maize in China. As part of an integrated pest management system, biological control agents can be used against S. frugiperda, especially egg parasitoids. However, limited evidence exists regarding the combined and persistent effects of various pest control products on those parasitoids. Results This study examined the selective and persistent toxicity of seven approved pesticides [chlorantraniliprole, lufenuron, emamectin benzoate, spinetoram (synthetic pesticides), Mamestra brassicae Nuclear Polyhedrosis Virus (MabrNPV), Bacillus thuringiensis (Bt) (biopesticides) and a chlorantraniliprole-lufenuron mixture (3:1) treatment] to five species of egg parasitoids, namely Trichogramma dendrolimi, Trichogramma chilonis, Trichogramma mwanzai, Trichogrammatoidea lutea, and Telenomus remus. The residual toxicity tests revealed that spinetoram showed high toxicity to T. mwanzai, T. dendrolimi, and T. chilonis in adults stage with mortality of over 92.6%, but caused low mortality in T. lutea (64.9%) and T. remus (49.2%) when used at the recommended rate. However, after treated by chlorantraniliprole, lunefuron, chl. + luf. (3:1), MabrNPV, and Bt, the mortality rates of all tested parasitoid adults were below 25% (lunefuron lower than 10%). A 3-day emamectin benzoate treatment caused 90% mortality in T. mwanzai, T. lutea, T. dendrolimi, and T. chilonis adults. The 3:1 mixture of chlorantraniliprole and lufenuron did not affect the lifespan of T. mwanzai and T. lutea. Chlorantraniliprole exhibited exceptional safety for all developmental stages (adult, egg, and pupa) of the five egg parasitoid species. A risk analysis indicated that chlorantraniliprole, MabrNPV, Bt, and the 3:1 mixture had the least toxicity to the five tested parasitoid adults, followed by lufenuron. Conversely, spinetoram and emamectin benzoate displayed moderate toxicity to adults of all tested parasitoid species. Conclusion Our findings indicate that chlorantraniliprole is safe for the five egg parasitoids species studied even after prolonged use and can be used in conjunction with lufenuron. However, spinetoram and emamectin benzoate had the potential to be harmful to these parasitoids.https://doi.org/10.1186/s43170-023-00205-yBiological controlSynthetic pesticidesPersistent toxicityIntegrated pest managementRisk assessment |
| spellingShingle | Hao-Ran Li Cheng-Yang Li Peng Dai Lian-Sheng Zang Nicolas Desneux Wei Xu Selective and persistent toxicity of seven insecticides to five egg parasitoids of Spodoptera frugiperda CABI Agriculture and Bioscience Biological control Synthetic pesticides Persistent toxicity Integrated pest management Risk assessment |
| title | Selective and persistent toxicity of seven insecticides to five egg parasitoids of Spodoptera frugiperda |
| title_full | Selective and persistent toxicity of seven insecticides to five egg parasitoids of Spodoptera frugiperda |
| title_fullStr | Selective and persistent toxicity of seven insecticides to five egg parasitoids of Spodoptera frugiperda |
| title_full_unstemmed | Selective and persistent toxicity of seven insecticides to five egg parasitoids of Spodoptera frugiperda |
| title_short | Selective and persistent toxicity of seven insecticides to five egg parasitoids of Spodoptera frugiperda |
| title_sort | selective and persistent toxicity of seven insecticides to five egg parasitoids of spodoptera frugiperda |
| topic | Biological control Synthetic pesticides Persistent toxicity Integrated pest management Risk assessment |
| url | https://doi.org/10.1186/s43170-023-00205-y |
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