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Adverse impacts of development on the deltamethrin-exposed host Ephestia elutella (Lepidoptera: Pyralidae) on population parameters of Habrobracon hebetor (Hymenoptera: Braconidae)
Crop Protection ( IF 2.8 ) Pub Date : 2023-02-25 , DOI: 10.1016/j.cropro.2023.106211
Xiu-Qin Wang, Hou-Ding Ou, Hao-Xi Li, Lan Wei, Yao Huang, Mao-Fa Yang

Habrobracon hebetor (Say) (Hymenoptera: Braconidae) is a widely distributed parasitoid that can be used to control numerous lepidopteran pests including Ephestia elutella (Hübner) (Lepidoptera: Pyralidae). The present study was aimed to evaluate the indirect impacts of deltamethrin on the life table parameters and the paralysis rate parameters of H. hebetor using the age-stage, two-sex life table method under laboratory conditions. The results indicated that the preadult survival rate of H. hebetor was significantly reduced (with LC5 and LC10 values of 0.41 and 0.49, respectively) in insecticide-treated populations. Similarly, after low-concentration (LC5 and LC10) treatments with the insecticide, the values of three important life table parameters (i.e., intrinsic rate of increase [r], finite rate of increase [λ], and net reproductive rate [R0]), and two major paralysis rate parameters (i.e., net paralysis rate [C0], and finite paralysis rate [ω]) of H. hebetor were significantly decreased compared to the control group. However, these parameters were not significantly different between the LC5 and LC10 treatment groups. Our results demonstrated that low lethal concentrations of deltamethrin can significantly depress the performance of H. hebetor. In order to establish an effective integrated pest management program to control E. elutella, it will be necessary to determine the adverse effects of deltamethrin on H. hebetor under warehouse conditions.



中文翻译:

开发对暴露于溴氰菊酯的宿主 Ephestia elutella(鳞翅目:Pyralidae)的不利影响对 Habrobracon hebetor(膜翅目:茧蜂科)的种群参数

Habrobracon hebetor (Say)(膜翅目:茧蜂科)是一种广泛分布的寄生蜂,可用于控制许多鳞翅目害虫,包括Ephestia elutella (Hübner)(鳞翅目:茧蜂科)本研究旨在在实验室条件下使用年龄阶段、两性生命表法评估溴氰菊酯对H. hebetor生命表参数和麻痹率参数的间接影响。结果表明,在杀虫剂处理的种群中,H. hebetor的成虫前存活率显着降低(LC 5和 LC 10值分别为 0.41 和 0.49)。同样,经过低浓度(LC 5和 LC 10 ) 杀虫剂处理、三个重要生命表参数的值(即固有增长率 [ r ]、有限增长率 [ λ ] 和净繁殖率 [ R 0 ]),以及两个主要麻痹与对照组相比,H. hebetor的速率参数(即净麻痹率 [ C 0 ] 和有限麻痹率 [ ω ])显着降低。然而,这些参数在 LC 5和 LC 10之间没有显着差异治疗组。我们的结果表明,低致死浓度的溴氰菊酯可以显着抑制H. hebetor的性能。为了建立有效的综合害虫管理计划来控制E. elutella,有必要确定溴氰菊酯对仓库条件下的H. hebetor的不利影响。

更新日期:2023-03-02
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