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通过不同的遗传架构在蝶的重复殖民期间重复演变的光周期性可塑性
Anna B Shoshan1, Ugo Pindeler1, Christopher W Wheat1
1Department of Zoology, Stockholm University, Stockholm, Sweden.
Proceedings. Biological sciences
|February 11, 2025
概括
类似的适应可以通过不同的遗传变化进化. 这项关于斑点木蝶 (Pararge aegeria) 的研究表明,反复出现的殖民事件通过部分非平行遗传途径导致了平行的表型进化.
科学领域:
- 进化生物学是进化的生物学.
- 遗传学 遗传学是一种遗传学.
- 生态生态学 生态生态学
背景情况:
- 经常发生的殖民事件往往导致并行表型适应.
- 人们越来越认识到,类似的表型可以通过替代遗传途径进化.
- 斑点木蝶 (Pararge aegeria) 为研究殖民事件中的适应提供了一个模型.
研究的目的:
- 为了研究光周期性可塑性重复演化的遗传基础,用于Pararge aegeria. diapause诱导.
- 确定不同殖民事件中类似的表型适应是否涉及并行或非并行的遗传变化.
- 为了检查不同人群中光周期性可塑性的性别相关遗传.
主要方法:
- 种群基因组分析以确定光周期学候选区域.
- 具有不同光周期可塑性的种群之间的混合交叉.
- 测定光周期反应规范的性别相关遗传.
主要成果:
- 在Z染色体上确定了与光周期学相关的候选区域.
- 混合交叉揭示了来自不同殖民事件的远距离相关种群之间的光周期性可塑性的强烈性取决于性别的遗传.
- 在最古老的殖民范围内的更密切相关种群之间的交叉显示没有性别依赖的遗传效应.
结论:
- 光周期性可塑性的基因型-表型图在Pararge aegeria种群之间有所不同.
- 类似的局部表型适应在反复出现的殖民事件中通过部分非平行遗传变化而演变.
- 这突显了替代遗传途径在适应性进化中的作用.
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