| 5种常用杀虫剂对台湾甲腹茧蜂的影响 |
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| 引用本文： | 余姿蓉,林珠凤,贾静静,秦双,吉训聪.5种常用杀虫剂对台湾甲腹茧蜂的影响[J].热带作物学报,2022,43(8):1663-1670. |
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| 作者姓名： | 余姿蓉 林珠凤 贾静静 秦双 吉训聪 |
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| 作者单位： | 1.海南大学植物保护学院,海南海口 5702282.海南省农业科学院植物保护研究所/海南省农业科学院农产品质量安全与标准研究中心/海南省植物病虫害防控重点实验室,海南海口 571100 |
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| 基金项目： | 海南省重点研发计划科技合作方向项目(ZDYF2020220);海南省重大科技计划项目(ZDKJ202002);省属科研院所技术创新专项“草地贪夜蛾高效防控关键技术研究与示范推广”(KYYS-2021-06) |
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| 摘 要： | 本研究测定了防治草地贪夜蛾（Spodoptera frugiperda）的常用药剂对台湾甲腹茧蜂（Chelonus formosanus）成虫的室内杀虫活性、蛹的羽化率、处理蛹后羽化成虫寿命和寄生率的影响,为草地贪夜蛾的化学与生物协同防治中药剂的选择提供依据。在室内条件下用药膜法和喷雾法测定200 g/L氯虫苯甲酰胺SC、30%茚虫威EC、5%甲氨基阿维菌素苯甲酸盐ME、10%虫螨腈SC和5.7%氯氟氰菊酯EW 5种常用杀虫剂对台湾甲腹茧蜂成蜂的LR50,及其推荐浓度对台湾甲腹茧蜂寄生率、蛹的羽化率及羽化后寿命的影响。结果表明,5种杀虫剂药膜法处理台湾甲腹茧蜂成蜂后,LR50由高到低为氯虫苯甲酰胺>茚虫威>氯氟氰菊酯>虫螨腈>甲氨基阿维菌素苯甲酸盐;氯虫苯甲酰胺对台湾甲腹茧蜂成蜂风险系数HQ=1.55,有较高风险,其余药剂风险系数均<1,风险较低。喷雾处理蜂蛹后,甲氨基阿维菌素苯甲酸盐80 mg/L处理对羽化率无显著影响;虫螨腈1000 mg/L处理的羽化率最低（63.33%）;氯虫苯甲酰胺60 mg/L处理显著降低蜂蛹羽化后成虫寿命,茚虫威180 mg/L、甲氨基阿维菌素苯甲酸盐80、90 mg/L处理无显著影响。茚虫威180 mg/L和虫螨腈1000 mg/L处理下成蜂的寄生率分别下降5.50%和4.98%,影响较小。综上所述,5%甲氨基阿维菌素苯甲酸盐ME在配合台湾甲腹茧蜂对草地贪夜蛾进行综合防治具有应用潜力,30%茚虫威EC及10%虫螨腈SC在适当的剂量下仍需完善应用规范,避免过量使用。
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| 关 键 词： | 台湾甲腹茧蜂 草地贪夜蛾 杀虫剂 |
| 收稿时间： | 2021-10-26 |
Effects of Five Commonly Used Insecticides on Chelonus formosanus |
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| YU Zirong,LIN Zhufeng,JIA Jingjing,QIN Shuang,JI Xuncong.Effects of Five Commonly Used Insecticides on Chelonus formosanus[J].Chinese Journal of Tropical Crops,2022,43(8):1663-1670. |
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| Authors: | YU Zirong LIN Zhufeng JIA Jingjing QIN Shuang JI Xuncong |
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| Institution: | 1. College of Plant Protection, Hainan University, Haikou, Hainan 570228, China2. Institute of Plant Protection, Hainan Academy of Agricultural Sciences / Research Center of Quality Safety and Standards for Agricultural Products, Hainan Academy of Agricultural Sciences / Key Laboratory of Plant Disease and Pest Control of Hainan Province, Haikou, Hainan 571100, China |
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| Abstract: | The fall armyworm, Spodoptera frugiperda, first invaded in Yunnan, China, in January 2019, is a notorious agricultural pestinsects. It is characterized by fast migration, broad host range, high reproductive capacity, strong damage ability, and wide adaptability. It seriously threatens the development of China's corn industry due to its establishment in China. It is first found on maize in Haikou in April, and poses a serious threat to the production of fresh eating maize. Chelonus formosanus of Chelonus Panzer was recorded in Hainan Island, China. C. formosanus is an egg-larval intertemporal parasitic wasp and mainly parasitizes Lepidoptera pests including S. frugiperda, it's highest parasitism rate to the eggs of Spodoptera indoor is 100%. To evaluate the effects of commonly used insecticides for the control of S. frugiperda on C. formosanus, the effects of the recommended concentrations of 200 g/L chlorantraniliprole SC, 30% indoxacarb EC, 5% amectin benzoate ME, 10% chlorfenapyr SC and 5.7% cyhalothrin EW 5 were studied. The performances included the mortality rate, parasitic rate, life span and pupal eclosion and were determined by the residual film and foliar spray under indoor conditions. The results showed that the order of LR50 of the adult parasitoids treated by the five pesticides as flows: chlorantraniliprole > indoxacarb > cyhalothrin > chlorfenapyr > amectin benzoate. Chlorantraniliprole had a higher risk for adult C. formosanus (HQ=1.55), HQ of other agents was less than 1, and the risk was low. After spraying the pupa, amectin benzoate 80 mg/L treatment had no significant effect on the emergence rate. The emergence rate of chlorfenapyr 1000 mg/L was the lowest (63.33%). Chlorantraniliprole 60 mg/L treatment significantly reduced the adult life after pupa eclosion, but indoxacarb 180 mg/L, amectin benzoate 80 mg/L and 90 mg/L treatment had no significant effect. The parasitism rate of adult parasitoids decreased by 5.50% and 4.98% respectively under the treatment of indoxacarb 180 mg/L and chlorfenapyr 1000 mg/L, and the difference of other insecticides was not significant. According to the experimental results of this paper, at the recommended concentration, 5% amectin benzoate ME, 30% indoxacarb EC and 10% chlorfenapyr SC in the right concentration can be combined with the biological control of C. formosanus against S. frugiperda. The effects of different types of insecticides on C. formosanus were evaluated by mortality, eclosion rates, life span and parasitism rate of adult C. formosanus, which would provide a theoretical basis for the use of C. formosanus for the comprehensive control of S. frugiperda and the coordination of biological and chemical control. |
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| Keywords: | Chelonus formosanus Spodoptera frugiperda insecticide |
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