Antifeedant and sublethal effects of imidacloprid on Asian citrus psyllid, Diaphorina citri
Antifeedant and sublethal effects of imidacloprid on Asian citrus psyllid, Diaphorina citri
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DOI：
10.1002/ps.1767
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发表时间：
2009-08-01
影响因子：
4.1
通讯作者：
Stelinski, Lukasz L.
中科院分区：
文献类型：
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作者：
Boina, Dhana Raj;Onagbola, Ebenezer O.;Stelinski, Lukasz L.
背景技术背景：柑橘木虱（Diaphorina citri Kuwayama）是柑橘黄龙病（HLB）的病原菌。由于在空间和时间的吸收和系统分布的吡虫啉适用于柑橘树和它的降解随着时间的推移在柑橘树的变化，非加太成人和害虫暴露于浓度，可能不会导致立即死亡，而是亚致死的影响。本实验室研究的目的是确定亚致死浓度的吡虫啉对ACP生命阶段的影响。每天用亚致死浓度处理的ACP成虫和美洲龙植物的摄食（0.1 μ g mL（-1））的吡虫啉显著降低成虫寿命（8天）、繁殖力（33%）和生育力（6%），以及若虫存活率（12%）和发育率与未处理对照相比。这些负面影响的程度与接触时间和浓度直接相关。此外，非加太成年人，以柑橘叶处理系统的致死和亚致死浓度的吡虫啉排泄显着减少蜜露（7-94%）相比，控制在浓度依赖性的方式表明拒食活性imidacloprid.CONCLUSIONS：亚致死浓度的吡虫啉产生负面影响的发展，生殖，生存和寿命的非加太，这可能有助于随着时间的推移人口减少。此外，减少喂养的ACP成人与亚致死浓度的吡虫啉处理的植物可能会降低ACP成功地获得和传播HLB致病病原体的能力。(C)2009年化学工业协会
BACKGROUND: Asian citrus psyllid (ACP), Diaphorina citri Kuwayama, transmits the causal bacteria of the devastating citrus disease huanglongbing (HLB). Because of the variation in spatial and temporal uptake and systemic distribution of imidacloprid applied to citrus trees and its degradation over time in citrus trees, ACP adults and nymphs are exposed to concentrations that may not cause immediate mortality but rather sublethal effects. The objective of this laboratory study was to determine the effects of sublethal concentrations of imidacloprid on ACP life stages.RESULTS: Feeding by ACP adults and nymphs on plants treated daily with a sublethal concentration (0.1 mu g mL(-1)) of imidacloprid significantly decreased adult longevity (8 days), fecundity (33%) and fertility (6%), as well as nymph survival (12%) and developmental rate compared with untreated controls. The magnitude of these negative effects was directly related to exposure duration and concentration. Furthermore, ACP adults that fed on citrus leaves treated systemically with lethal and sublethal concentrations of imidacloprid excreted significantly less honeydew (7-94%) compared with controls in a concentration-dependent manner suggesting antifeedant activity of imidacloprid.CONCLUSIONS: Sublethal concentrations of imidacloprid negatively affect development, reproduction, survival and longevity of ACP, which likely contributes to population reductions over time. Also, reduced feeding by ACP adults on plants treated with sublethal concentrations of imidacloprid may potentially decrease the capacity of ACP to successfully acquire and transmit the HLB causal pathogen. (C) 2009 Society of Chemical Industry