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首页> 外文期刊>Journal of Economic Entomology >Variation in genetics and performance of Dutch western flower thrips populations
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Variation in genetics and performance of Dutch western flower thrips populations

机译：荷兰西部花蓟马种群的遗传和性能变异

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摘要

Invasion of pests may result in local adaptation and the development of biotypes specialized in different hosts. In this study, we investigated western flower thrips, Frankliniella occidentalis (Pergande), an invasive pest in Europe. Thrips from different commercial glasshouse crops within the Dutch Westland and a lab culture kept on chrysanthemum were compared. Genetic barcoding was applied for the identification of potential western flower thrips cryptic species in the Netherlands revealing that all western flower thrips populations studied belonged to the "glasshouse" strain reported in California as the only existing species in the Netherlands. Feeding and reproduction parameters in leaf disc and whole plant bioassays were scored. We detected significant differences in thrips feeding among host plants and thrips origin. Host plants differed in average thrips damage while thrips from different origins caused similar amounts of damage across host plants. In contrast, reproductive success of thrips on all plant species depended strongly on thrips origin. The thrips lab culture maintained on chrysanthemum obtained the highest levels of reproduction on chrysanthemum. Differences among the other thrips populations were relatively small. Amplified fragment length polymorphisms analyses were used to study genetic differences between western flower thrips populations and confirmed that the lab culture population was also genetically the most different of all studied populations. The results of the amplified fragment length polymorphisms analyses together with the better reproductive performance of thrips on the host plant on which they were maintained demonstrate the evolution of a lab biotype specialized in a particular host. This finding has potential relevance for future crop control and breeding programs.
机译：有害生物的入侵可能导致局部适应和发展专门针对不同宿主的生物型。在这项研究中，我们调查了西花蓟马，欧洲入侵害虫Frankliniella occidentalis（Pergande）。比较了荷兰西部地区不同商业温室作物的蓟马和菊花上的实验室培养物。遗传条形码技术已用于鉴定荷兰潜在的西花蓟马隐性物种，这表明研究的所有西花蓟马种群均属于加利福尼亚报道的“温室”菌株，是荷兰唯一的现存物种。对叶盘和全植物生物测定中的进食和繁殖参数进行评分。我们检测到寄主植物之间的蓟马取食和蓟马起源之间存在显着差异。寄主植物的蓟马平均损害程度不同，而不同来源的蓟马对寄主植物造成的伤害程度相似。相反，蓟马在所有植物物种上的繁殖成功在很大程度上取决于蓟马的起源。在菊花上维持的蓟马实验室培养在菊花上获得了最高水平的繁殖。其他蓟马人群之间的差异相对较小。扩增的片段长度多态性分析用于研究西方花蓟马种群之间的遗传差异，并证实实验室培养种群在遗传上也是所有研究种群中差异最大的。扩增的片段长度多态性分析的结果以及蓟马在维持它们的宿主植物上的更好繁殖性能证明了专门针对特定宿主的实验室生物型的进化。这一发现对未来的作物控制和育种计划具有潜在的意义。

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