| 哒螨灵对加州新小绥螨的安全性和捕食能力的影响 |
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| 引用本文： | 张誉心,蒋春先,李庆. 哒螨灵对加州新小绥螨的安全性和捕食能力的影响[J]. 中国生物防治学报, 2021, 37(4): 725-731. DOI: 10.16409/j.cnki.2095-039x.2021.09.005 |
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| 作者姓名： | 张誉心 蒋春先 李庆 |
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| 作者单位： | 四川农业大学农学院, 成都 611130 |
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| 基金项目： | 国家重点研发计划（2018YED0201400）；国家现代农业产业技术体系四川创新团队（sccxtd-2020-04）；四川省科技计划项目应用基础研究（2021YJ0260） |
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| 摘 要： | 本文在评估哒螨灵对加州新小绥螨Neoseiulus californicus(McGregor)安全性的基础上,测定了经该药剂处理后的捕食螨对朱砂叶螨Tetranychus cinnabarinus(Boisduval)的捕食功能反应.结果表明,哒螨灵对朱砂叶螨和加州新小绥螨的致死中浓度(LC50)分别为17.62μg...
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| 关 键 词： | 哒螨灵 加州新小绥螨 毒性选择指数 捕食功能 |
| 收稿时间： | 2020-08-01 |
Effects of Pyridaben on Safety and Predation Ability of Neoseiulus californicus (McGregor) (Acari: Phytoseiidae) |
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| ZHANG Yuxin,JIANG Chunxian,LI Qing. Effects of Pyridaben on Safety and Predation Ability of Neoseiulus californicus (McGregor) (Acari: Phytoseiidae)[J]. Chinese Journal of Biological Control, 2021, 37(4): 725-731. DOI: 10.16409/j.cnki.2095-039x.2021.09.005 |
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| Authors: | ZHANG Yuxin JIANG Chunxian LI Qing |
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| Affiliation: | College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China |
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| Abstract: | To determine the direct effects of acaricides on natural enemies, the functional response of Neoseiulus californicus (McGregor) treated with sublethal concentrations of pyridaben to Tetranychus cinnabarinus (Boisduval) was determined. The results showed that the LC50 of pyridaben to T. cinnabarinus and N. californicus were 17.62 μg/mL and 119.89 μg/mL, respectively. The toxicity selective ratio (TSR) of the acaricide was 6.803, indicating that the pyridaben was safe to N. californicus. The daily consumption of the predator mites to T. cinnabarinus larvae was reduced from 43.80 to 41.80 in the control when the concentration was LC30. At the same time, the handling time Th was significantly prolonged. The predation ability (a/Th) of N. californicus on the larvae of T. cinnabarinus decreased the most. The a/Th of the LC10 and LC30treatment groups decreased from 53.71 in the control to 18.37 and 14.95, respectively, and the maximum reduction ratio was 72.16% in the LC30 group. The searching effect of the predator mite on all the stages of T. cinnabarinus, except nymph, was weakened by the sub-lethal treatment of pyridaben under the same prey density, whose amplitude ranked as:larvae>egg>adult. In conclusion, pyridaben will have some negative influence on the predation ability of N. californicus. |
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| Keywords: | pyridaben Neoseiulus californicus toxicity selective ratios functional responses |
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