对神秘的Bactrocera dorsalis (Diptera: Tephritidae) 标本的识别方法的评估:将形态和分子技术结合起来
Emeline Charbonnel1,2,3, Marie-Pierre Chapuis1,2, Andrea Taddei3
1CBGP, CIRAD, INRAE, Institut Agro, IRD, Univ Montpellier, Montpellier, France.
Journal of economic entomology
|October 12, 2023
概括
准确识别东方果 (Bactrocera dorsalis) 对种群基因组学至关重要. 结合线粒体和核DNA标记物有效地解决了神秘物种复合体中的分类学模两可.
科学领域:
- 昆虫学 昆虫学是一门学科.
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
背景情况:
- 精确的物种鉴定对于种群基因组学至关重要,特别是对于东方果 (Bactrocera dorsalis) 等入侵性害虫.
- B. dorsalis 是一个神秘的物种复合体的一部分,由于形态相似性和与同类物种的杂交,它带来了挑战.
- 现有的识别方法受到分类学模两可的限制,阻碍了准确的人口研究和监测.
研究的目的:
- 评估B.dorsalis和两个神秘物种 (B.carambolae和B.occipitalis) 之间的分类学模两可.
- 评估DNA测序 (COI和EIF3L标记) 在解决形态识别问题的有效性.
- 开发一种可靠的分子程序,用于在种群遗传学和监测中准确识别B. dorsalis.
主要方法:
- 对289个Bactrocera标本在它们的分布上进行了形态分析.
- 对COI线粒体条形码和EIF3L核标记物的DNA测序.
- 使用明确的形态识别和发布的序列构建参考数据集.
主要成果:
- 形态分析显示,总体3.5%的标本和47.6%的东南亚岛屿的标本具有模两可的识别.
- 组合线粒体 (COI) 和核 (EIF3L,ITS) DNA测序成功解决了形态模两可的问题.
- COI标记区分了B.dorsalis与五个物种,而EIF3L和ITS则区分了它与另一种物种.
结论:
- 建议使用线粒体和核标记物的联合分子方法来准确识别B. dorsalis.
- 这种方法提高了种群基因组学研究和害虫监测计划的可靠性.
- 解决分类学模两可是了解入侵途径和有效管理害虫种群的必要条件.
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