氯虫苯甲酰胺对螟黄赤眼蜂致死效应及行为影响

doi:10.16409/j.cnki.2095-039x.2024.01.008

摘要/Abstract

摘要： 螟黄赤眼蜂Trichogramma chilonis是许多鳞翅目害虫的一种重要天敌。为了明确氯虫苯甲酰胺对螟黄赤眼蜂的安全性，室内研究了氯虫苯甲酰胺对螟黄赤眼蜂成蜂的急性毒力和田间推荐使用浓度对赤眼蜂行为的影响。结果表明：氯虫苯甲酰胺对螟黄赤眼蜂成蜂的LC₅₀为177.99 mg/L，为低等风险水平，但长期处理使螟黄赤眼蜂的寿命显著缩短1.75 d。螟黄赤眼蜂寄生功能反应符合Holling Ⅱ模型，氯虫苯甲酰胺处理螟黄赤眼蜂寄生米蛾卵的瞬间攻击率和日寄生最大数分别为1.343和57.471粒，药剂处理后寄生效能降低1.25倍。螟黄赤眼蜂成蜂的寄主选择率显著下降，且极显著延长了寄主搜索定位时间；对交配成功率无显著影响，但显著延长了交配过程中的配对检测和求偶时间，缩短了交尾时间；对产卵时长和后代性比无显著影响，但极显著增加了排卵过程中的停顿时间。综上所述，氯虫苯甲酰胺田间推荐浓度会影响螟黄赤眼蜂的寄主搜索定位和产卵行为，研究结果为提高化学防治和生物防治的兼容性提供理论基础。

关键词: 螟黄赤眼蜂, 亚致死影响, 行为观察, 氯虫苯甲酰胺

Abstract: Trichogramma chilonis (Hymenoptera: Trichogrammatidae) is an important parasitoid of many lepidopterous pests on various crops. In order to determine the safety of chlorantraniliprole to the parasitoid, the acute toxicity of chlorantraniliprole to the adults was measured, and the behavioral effects of chlorantraniliprole at field-recommended concentrations on T. chilonis were evaluated in laboratory. The results showed that chlorantraniliprole was at a low risk level to T. chilonis with LC₅₀ of 177 mg/L, but long-term treatment significantly reduced the lifespan by 1.75 d. The parasitoid exhibited Holling type Ⅱ functional response, with an instantaneous attack rate of 1.343, a maximum parasitism capacity of 57.471 eggs/d, which was reduced by 1.25 times when the wasps were treated with chlorantraniliprole. The treatment not only reduced the host selection rate of T. chilonis adults significantly, but also significantly extended the host search and location time. Although the treatment had no significant effect on the mating success rate, it significantly extended the mating detection and courtship time, and decreased the duration of copulation time. The treatment had no significant effect on oviposition duration and offspring sex ratio, but significantly increased the pause time during ovulation. In conclusion, the field recommended concentration of chlorantraniliprole has a negative effect on host search and location and oviposition behavior of T. chilonis, which has to be considered in balancing the compatibility of biological and chemical control.

Key words: Trichogramma chilonis, sublethal effect, behavioral observation, chlorantraniliprole

中图分类号:

S476.3

沈佳忠, 张文哲, 张传清, 刘亚慧. 氯虫苯甲酰胺对螟黄赤眼蜂致死效应及行为影响[J]. 中国生物防治学报, 2025, 41(6): 1300-1306.

SHENG Jiazhong, ZHANG Wenzhe, ZHANG Chuanqing, LIU Yahui. Lethal and Behavioral Effects of Chlorantraniliprole on the Parasitoid Wasp Trichogramma chilonis[J]. Chinese Journal of Biological Control, 2025, 41(6): 1300-1306.

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