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在Drosophila subobscura种群的时间和息地适应:染色体反转的变化

Goran Zivanovic¹, Concepció Arenas², Francesc Mestres³

¹Department of Evolutionary Biology, Institute for Biological Research "Sinisa Stankovic" - National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, Belgrade, 11000, Serbia.

|April 25, 2025

概括

在Drosophila subobscura的染色体逆转多态性表明适应气候变化. 更高的温度与特定的反转相关,这表明自然选择可能有利于适应热量的遗传变异.

科学领域:

进化生物学是进化的生物学.
环境科学环境科学
遗传学遗传学是一个

背景情况:

昆虫的染色体逆转多态性与适应有关,特别是与全球变暖有关.
德洛索菲拉 (Drosophila subobscura) 具有广泛的反转多态性,是研究环境适应的关键模型生物.
了解这些适应对于预测物种对气候变化的反应至关重要.

研究的目的:

研究Drosophila subobscura在不同息地 (树与树森林) 和随着时间的推移在塞尔维亚Jastrebac山的染色体逆转多态的差异化.
分析反转多态变化变化与气候变量 (包括温度,湿度和降雨量) 之间的关系.
探索温度上升对染色体逆转的适应性景观的潜在影响.

主要方法:

分析染色体逆转多态差异化在树和树森林息地之间的分析.
与气候数据 (温度,湿度,降雨量) 相关的多态变化的纵向研究.
多维缩放 (MDS) 分析以确定反转和气候变量之间的关系.
随着时间的推移计算染色体热量指数 (CTI).

主要成果:

在树和树森林之间观察到染色体逆转的微分化,主要涉及A和O染色体.
随着时间的推移,反转多态的变化比息地驱动的差异化更为显著.
在Jastrebac山中记录了平均和最低气温的显著上升. 在研究期间.
多维缩放揭示了在塞尔维亚Drosophila subobscura种群中的染色体反转和温度 (特别是最低温度) 之间的相关性.
染色体热量指数显示,从1990年到1994年,Jastrebac山的热量指数增加. 树林,在2023年观察到潜在的稳定.

结论:

息地类型影响染色体反转多态,但时间气候变化产生更强烈的影响.
温度上升与染色体逆转的变化有关,这表明了适应性反应.
初步发现表明自然选择的可能门,在Drosophila subobscura种群中有利于"温暖"的适应逆转,减少"冷"的逆转.

关键词:

这种植物是Drosophila subobscura.适应适应适应染色体逆转是一种染色体逆转.环境环境环境环境全球变暖全球变暖.自然选择是自然选择.

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