对风的形态和基因组反应在生物入侵期间出现并持续存在
Jason J Kolbe1, Sean T Giery2, Ansley S Petherick3
1Department of Biological Sciences, University of Rhode Island, Kingston, RI 02881.
概括
风驱动了子的显著进化变化,有利于更好地粘附的特征. 这些影响随着时间的推移而持续,影响身体特征和遗传构成,特别是在沿海人群中.
科学领域:
- 生态学和进化生物学.
- 类学 类学 类学 类学
- 人口遗传学 人口遗传学
背景情况:
- 风作为强烈的,偶尔性的自然选择事件,特别影响沿海和岛屿物种.
- 阿诺利斯表现出对特征的选择,增强了在强风下坚持的能力.
- 对于长期存在的形态和基因组适应极端天气事件的知识有限.
研究的目的:
- 调查风对侵袭性棕色 (Anolis sagrei) 的形态和基因组变异的长期影响.
- 评估风中介选择在与粘附性能相关的特征上的持久性.
- 与其他环境因素相比,了解风作为基因组差异化驱动力的作用.
主要方法:
- 研究了美国东南部的30个地点,包括历史风数据和Anolis sagrei种群.
- 测量了与坚持性能相关的形态特征 (四肢长度,脚大小).
- 分析基因组数据以确定与风频率和形态学相关的选择下位置.
主要成果:
- 风频率与较长的四肢和较大的脚有积极的相关性,这些特征增强了粘附力.
- 基因组分析揭示了与风频率和更长的四肢密切相关的位置.
- 风被确定为比其他环境变量更持久的人口基因组差异化驱动因素.
结论:
- 风是一个显著和持久的力量,塑造了Anolis的形态和基因组变异.
- 种群的进化轨迹可能会因气候变化引起的极端天气模式的变化而改变.
- 这项研究提供了对极端环境事件的长期进化后果的见解.
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