阿维菌素和哒螨灵亚致死剂量对土耳其斯坦叶螨实验种群生命表的影响

摘要/Abstract

摘要：

为了了解阿维菌素和哒螨灵对土耳其斯坦叶螨Tetranychus turkestani Ugarov et Nikolski实验种群的亚致死效应, 为新疆土耳其斯坦叶螨的综合防治提供理论依据, 我们在室内通过叶碟饲养的方法, 利用生命表技术研究了阿维菌素和哒螨灵亚致死剂量对土耳其斯坦叶螨实验种群成螨和卵的影响。结果表明: 阿维菌素和哒螨灵LC₂₀、LC₁₀剂量处理成螨后, 可使成螨的产卵量、平均寿命和卵孵化率显著降低; 卵期、幼螨期、若螨期和产卵前期明显延长, 而成螨期和雌螨寿命又明显低于对照; 对次代种群的影响表现在净生殖率(R₀)、周限增长率(λ)降低、生存率和平均每雌日产卵率明显降低, 内禀增长率（r_m）由0.37降低至0.17～0.29, 平均世代历期(T)除阿维菌素LC₂₀处理时长于对照外, 其他处理均低于对照, 种群倍增时间(Dt)延长。两种药剂亚致死剂量处理卵后, 内禀增长率（r_m）由0.32降低至0.11～0.22, 净生殖率(R₀)降低, 平均世代历期(T)和周限增长率(λ)降低, 而种群加倍时间(Dt)增长; 幼螨期、若螨期和产卵前期明显长于对照, 成螨期和雌螨寿命显著低于对照; 生存率和平均每雌日产雌率明显降低。这些结果证明, 在亚致死剂量下, 阿维菌素和哒螨灵能够降低土耳其斯坦叶螨种群的发育速率, 这对土耳其斯坦叶螨的综合防治策略的制定有积极意义。

关键词: 土耳其斯坦叶螨, 亚致死效应, 阿维菌素, 哒螨灵, 生命表

Abstract:

In order to provide the theoretical basis for integrated control of Tetranychus turkestani in Xinjiang province, the sublethal effects of abamectin and pyridaben on experimental populations of T. turkestani were studied. A leaf disc bioassay was employed to examine the effects of sublethal dosage of abamectin and pyridaben on adults and eggs of experimental populations of T. turkestani by means of life tables. The results showed that the fecundity, averagelongevity and egg hatchability of the adults treated by two sublethal concentrations (LC₁₀ and LC₂₀) of abamectin and pyridaben were shortened obviously. The periods of egg, larva, nymph and preoviposition were greatly longer than those of the control, while the adult period and female longevity were significantly shorter than those of the control. The net reproduction rate (R₀), finite rate of increase (λ), survival rate and average number of eggs laid per female per day in first filial generation were markedly decreased compared to the control. The intrinsic rates of increase（r_m） dropped from 0.37 to 0.17-0.29. The mean generation time (T) were all shortened than the controls except for abamectin（LC₂₀）. The population doubling time (Dt) was prolonged. When the eggs were treated by these two sublethal concentrations (LC₁₀ and LC₂₀) of abamectin and pyridaben, the intrinsic rates of increase （r_m） dropped from 0.32 to 0.11-0.22. The net reproduction rate (R₀), the mean generation time (T) and finite rate of increase (λ) were decreased, but the population doubling time (Dt) was extended. The periods of larva, nymph and preoviposition were greatly longer than those of the control, while the adult period and female longevity were dramatically shortened than those of the control. The survival rate and average number of eggs laid per female per day were significantly decreased. These results demonstrated that the sublethal dosage of abamectin and pyridaben could decrease the developmental rate of laboratory populations of T. turkestani, which has positive significance toward developing integrated pest management strategies.

Key words: Tetranychus turkestani, sublethal effect, abamectin, pyridaben, life-table

谷清义, 陈文博, 王利军, 申君, 张建萍. 阿维菌素和哒螨灵亚致死剂量对土耳其斯坦叶螨实验种群生命表的影响[J]. , 2010, 53(8): 876-883.

GU Qing Yi, CHEN Wen Bo, WANG Li Jun, SHEN Jun, ZHANG Jian Ping. Effects of sublethal dosage of abamectin and pyridaben on life table of laboratory populations of Tetranychus turkestani (Acari: Tetranychidae)[J]. , 2010, 53(8): 876-883.

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阿维菌素和哒螨灵亚致死剂量对土耳其斯坦叶螨实验种群生命表的影响

Effects of sublethal dosage of abamectin and pyridaben on life table of laboratory populations of Tetranychus turkestani (Acari: Tetranychidae)

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