The impact of range expansions on genomic parasitism in Lepidoptera

摘要：在本项目中，我们将研究鳞翅目昆虫基因组寄生的动态。以前的工作表明鳞翅目的基因组侵袭率特别高，但还没有人试图对最近的水平转移进行系统的研究。该项目将受益于一个独特的资源--一个庞大的种群基因组数据集，比较了来自20个鳞翅目物种的约100年前和现在的样本。利用这些数据，我们将：-表征这些鳞翅目昆虫物种的可转座子元素的含量-测试距离变化是否触发可转座子元素的活性，对比有和没有范围移位的物种-检查每个物种以寻找新的可转座子元素入侵的证据-从物种的子集收集和分析新的序列数据，以调查过去遇到可转座子元素的影响

Summary: In this project, we will investigate the dynamics of recent genomic parasitism in Lepidoptera. Previous work suggests that Lepidoptera show especially high rates of genomic invasions, but no systematic study of recent horizontal transfer has been attempted. The project will benefit from a unique resource-- a large population genomic data set comparing ~100-year-old and present-day samples from 20 Lepidopteran species. Using these data, we will:-Characterise the transposable element content of these Lepidopteran species-Test whether range shifts trigger transposable element activity, contrasting species with and without range shifts-Examine each species for evidence of invasions of new transposable elements-Collect and analyse new sequence data from a subset of the species, to investigate the impact of past encounters with transposable elements