可转移的元素在科罗拉多马甲虫,Leptinotarsa decemlineata (Coleoptera: Chrysomelidae) 的地理种群之间有所不同
Kristian Brevik1, Sean D Schoville2, Anna Muszewska3
1Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, VT, USA.
Environmental entomology
|October 12, 2023
概括
科罗拉多马甲虫 (Leptinotarsa decemlineata) 中的可移植元素 (TE) 在地理上有所不同,在墨西哥种群中发现了更多的TE. TE多样性可以区分种群,但与宿主植物或杀虫剂耐药性无关.
科学领域:
- 进化生物学是进化的生物学.
- 基因组学就是基因组学.
- 生态生态学 生态生态学
背景情况:
- 农业昆虫食草动物,如科罗拉多马甲虫 (Leptinotarsa decemlineata),表现出对农业生态系统的快速适应.
- 可移植元素 (TE) 是移动的遗传序列,涉及进化适应.
- 科罗拉多马虫种群表现出不同的适应能力,特别是在美国东部和西部种群之间的杀虫剂耐受性.
研究的目的:
- 研究北美莱普丁和衰减种群中可转移元素的丰富性和多样性.
- 为了确定可转移的元素组合和动员是否根据地理位置,宿主植物和新类杀虫剂耐药性而有所不同.
主要方法:
- 采用了社区生态的方法.
- 来自北美各地的Leptinotarsa decemlineata的88个基因组被重新排序.
- 分析了可转移元素的丰度,多样性和插入位置,与地理来源,宿主植物和抗虫剂耐药性相关.
主要成果:
- 在墨西哥收集的Leptinotarsa decemlineata个体与来自美国的个体相比,具有更高的可转移元素的丰度和多样性.
- 可转移元素插入地点在不同地理群体之间存在很大差异,反映了物种的进化历史.
- 虽然TE多样性区分了地理群体,但它与宿主植物的差异或新类杀虫剂耐药性水平的差异没有相关性.
结论:
- 地理位置是形成Leptinotarsa decemlineata种群中可转移元素多样性的重要因素.
- 可转移元素的动员和多样性有助于这种适应性强的昆虫害虫的进化动态.
- 需要进一步的研究,以了解TE变化的功能影响,与害虫适应和抗昆虫剂耐药性有关.
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