Lethal and Sublethal Effects of Fluxametamide on Rice-Boring Pest, Rice Stem Borer <i>Chilo suppressalis</i>
(1) Background: Fluxametamide is a novel isoxazoline insecticide. Rice stem borer <i>Chilo suppressalis</i> (Walker) is a destructive Lepidoptera pest of rice in China, and novel effective insecticides are required to be developed for controlling it due to its increasing resistance level...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/10/2429 |
| _version_ | 1827652287863980032 |
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| author | Yao Li Yingnan Wang Chenglong Qian Tao Tang Ning Shen Wei Wu Jianming Wang Zhaojun Han Chunqing Zhao |
| author_facet | Yao Li Yingnan Wang Chenglong Qian Tao Tang Ning Shen Wei Wu Jianming Wang Zhaojun Han Chunqing Zhao |
| author_sort | Yao Li |
| collection | DOAJ |
| description | (1) Background: Fluxametamide is a novel isoxazoline insecticide. Rice stem borer <i>Chilo suppressalis</i> (Walker) is a destructive Lepidoptera pest of rice in China, and novel effective insecticides are required to be developed for controlling it due to its increasing resistance levels. (2) Results: In the lethal assay, the insecticidal activity of fluxametamide with median lethal dose (LD<sub>50</sub>) value of 1.308 mg/kg to the fourth-instar larvae of <i>C. suppressalis</i> was higher than that of chlorantraniliprole (LD<sub>50</sub>, 3.112 mg/kg) and lower than that of emamectin benzoate (LD<sub>50</sub>, 0.006 mg/kg). In the sublethal (LD<sub>10</sub> and LD<sub>30</sub>) assay, the duration of third to sixth-instar larvae, the pupal duration, pupation rate, and life cycle rate were significantly increased in F<sub>0</sub> generation. Both the length and weight of the ovarian tube were decreased with the dose increase of fluxametamide, and were significantly smaller in the LD<sub>30</sub> treatment than those of the control group. In F<sub>1</sub> generation, only the duration of eggs was significantly increased with LD<sub>30</sub> treatment of fluxametamide, whereas other developmental parameters had no significant change. (3) Conclusion: Fluxametamide had relatively strong lethal and sublethal effects on <i>C. suppressalis</i> and probably was able to affect the population growth and progeny of <i>C. suppressalis</i>. |
| first_indexed | 2024-03-09T20:53:23Z |
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| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-09T20:53:23Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-44fab9084a824636949729fd8282bc6f2023-11-23T22:27:03ZengMDPI AGAgronomy2073-43952022-10-011210242910.3390/agronomy12102429Lethal and Sublethal Effects of Fluxametamide on Rice-Boring Pest, Rice Stem Borer <i>Chilo suppressalis</i>Yao Li0Yingnan Wang1Chenglong Qian2Tao Tang3Ning Shen4Wei Wu5Jianming Wang6Zhaojun Han7Chunqing Zhao8Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaKey Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaKey Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaInstitute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha 410125, ChinaKey Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaNanjing Dragonfly Smart Agricultural Research Co., Ltd., Nanjing 211225, ChinaNanjing Dragonfly Smart Agricultural Research Co., Ltd., Nanjing 211225, ChinaKey Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, ChinaKey Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China(1) Background: Fluxametamide is a novel isoxazoline insecticide. Rice stem borer <i>Chilo suppressalis</i> (Walker) is a destructive Lepidoptera pest of rice in China, and novel effective insecticides are required to be developed for controlling it due to its increasing resistance levels. (2) Results: In the lethal assay, the insecticidal activity of fluxametamide with median lethal dose (LD<sub>50</sub>) value of 1.308 mg/kg to the fourth-instar larvae of <i>C. suppressalis</i> was higher than that of chlorantraniliprole (LD<sub>50</sub>, 3.112 mg/kg) and lower than that of emamectin benzoate (LD<sub>50</sub>, 0.006 mg/kg). In the sublethal (LD<sub>10</sub> and LD<sub>30</sub>) assay, the duration of third to sixth-instar larvae, the pupal duration, pupation rate, and life cycle rate were significantly increased in F<sub>0</sub> generation. Both the length and weight of the ovarian tube were decreased with the dose increase of fluxametamide, and were significantly smaller in the LD<sub>30</sub> treatment than those of the control group. In F<sub>1</sub> generation, only the duration of eggs was significantly increased with LD<sub>30</sub> treatment of fluxametamide, whereas other developmental parameters had no significant change. (3) Conclusion: Fluxametamide had relatively strong lethal and sublethal effects on <i>C. suppressalis</i> and probably was able to affect the population growth and progeny of <i>C. suppressalis</i>.https://www.mdpi.com/2073-4395/12/10/2429fluxametamidelethal effectsublethal effect<i>Chilo suppressalis</i>ovary |
| spellingShingle | Yao Li Yingnan Wang Chenglong Qian Tao Tang Ning Shen Wei Wu Jianming Wang Zhaojun Han Chunqing Zhao Lethal and Sublethal Effects of Fluxametamide on Rice-Boring Pest, Rice Stem Borer <i>Chilo suppressalis</i> Agronomy fluxametamide lethal effect sublethal effect <i>Chilo suppressalis</i> ovary |
| title | Lethal and Sublethal Effects of Fluxametamide on Rice-Boring Pest, Rice Stem Borer <i>Chilo suppressalis</i> |
| title_full | Lethal and Sublethal Effects of Fluxametamide on Rice-Boring Pest, Rice Stem Borer <i>Chilo suppressalis</i> |
| title_fullStr | Lethal and Sublethal Effects of Fluxametamide on Rice-Boring Pest, Rice Stem Borer <i>Chilo suppressalis</i> |
| title_full_unstemmed | Lethal and Sublethal Effects of Fluxametamide on Rice-Boring Pest, Rice Stem Borer <i>Chilo suppressalis</i> |
| title_short | Lethal and Sublethal Effects of Fluxametamide on Rice-Boring Pest, Rice Stem Borer <i>Chilo suppressalis</i> |
| title_sort | lethal and sublethal effects of fluxametamide on rice boring pest rice stem borer i chilo suppressalis i |
| topic | fluxametamide lethal effect sublethal effect <i>Chilo suppressalis</i> ovary |
| url | https://www.mdpi.com/2073-4395/12/10/2429 |
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