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首页> 外文期刊>Journal of applied toxicology >Life history parameters of the Two-spotted Spider Mite (Tetranychus urticae Koch) feeding on bean leaves treated with pyrrolizidine alkaloids.
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Life history parameters of the Two-spotted Spider Mite (Tetranychus urticae Koch) feeding on bean leaves treated with pyrrolizidine alkaloids.

机译：饲喂吡咯并立定生物碱的豆叶上的两点叶螨（Tetranychus urticae Koch）的生活史参数。

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摘要

In this study we assess the effect of pyrrolizidine alkaloids (PAs) extracted from Lithospermum canescens on the biology of the two-spotted spider mite (Tetranychus urticae Koch). Lithospermum canenscens (Michaux) Lehm. (Boraginaceae) is a common prairie plant also known as Indian paint or hoary puccoon. A mixture of seven PAs with known chemical structures was used in this investigation. Mites treated with PAs showed a high mortality of juveniles, a decrease in female fecundity and a shortened longevity. The intrinsic rate of population increase (r(m)) was used as an indicator of T. urticae population performance after treatment with PAs. The r(m) value obtained with alkaloid-treated leaves was lower than that for mites developing on untreated leaves, which indicates that the mite population would develop much slower on treated plants. The results suggest that further studies should be performed to assess the possible use of PA extracts for spider mite control.
机译：在这项研究中，我们评估了从甘草紫草提取的吡咯烷嗪生物碱（PAs）对两点叶螨（Tetranychus urticae Koch）生物学的影响。紫草（Leichspermum canenscens（Michaux）Lehm）。 （Boraginaceae）是一种常见的草原植物，也被称为印度涂料或白头pu。在这项研究中使用了具有已知化学结构的七个PA的混合物。用PA处理的螨虫显示出较高的幼虫死亡率，雌性繁殖力下降和寿命缩短。种群内在增长率（r（m））用作PA处理后荨麻疹种群表现的指标。用生物碱处理过的叶子获得的r（m）值低于未处理过的叶子上发育的螨的r（m）值，这表明在处理过的植物上螨虫种群的发育会慢得多。结果表明，应进行进一步的研究，以评估PA提取物用于控制红蜘蛛的可能性。

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