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可转移的元素插入与泛热带蝶Hypolimnas misippus中的贝蒂斯模仿有关
Anna Orteu1,2, Marek Kucka3, Ian J Gordon4
1Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, UK.
Molecular biology and evolution
|February 24, 2024
概括
蝶Hypolimnas misippus通过重新演变祖先的翅膀模式来表现出适应性阿塔维斯. 在M位点的可转移元素驱动了这种逆转,使得有毒的Danaus chrysippus morphs的模仿成为可能.
科学领域:
- 进化生物学是进化的生物学.
- 遗传学 遗传学 是一个
- 昆虫学 昆虫学是一门学科.
背景情况:
- 海波林纳斯·米西普斯 (Hypolimnas misippus) 模仿有毒的丹纳斯·克里西普斯 (Danaus chrysippus),利用翅膀模式的M和A位置来模仿不同的非洲形态.
- 贝特斯模仿涉及一种美味的物种模仿一种有毒的物种,以阻止捕食者.
研究的目的:
- 为了研究Hypolimnas misippus的M位点背后的进化机制.
- 为了确定蝶翅膀图案中的适应性阿塔维主义的遗传基础.
主要方法:
- 哈普洛标记和一种新的分析工具Wrath被用来分析M位点.
- 对多种Hypolimnas物种进行了比较基因组分析.
主要成果:
- 在M位点确定了两个大型可转移元素插入,存在于主导模仿基因.
- 发现含有这些插入的支配性等位基因是衍生的,这表明它回归到一个祖先的表型.
- 这些插入可能会扰乱 cis 调节元件,导致祖先模式的重新表达.
结论:
- 在H. misippus中,M位点表现出适应性原生主义,在这种情况下,重新演变的祖先特征被重新用于模仿.
- 可转移的元素在产生表型新性和适应性进化方面发挥着至关重要的作用.
- 融合进化是显而易见的,类似的模仿模式在Hypolimnas物种中独立演变.
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