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Updated: May 29, 2025

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宏观进化沿着在翅膀中抵抗力最小的发展路线进行

Patrick T Rohner¹, David Berger²

¹Department of Ecology, Behavior, and Evolution, University of California, San Diego, La Jolla, CA, USA. prohner@ucsd.edu.

Nature ecology & evolution

|February 7, 2025

概括

翅的发育变异性和遗传变异预测了长期的进化分歧. 自然选择可能会塑造发育特征,使自身的变异性与数百万年来的进化模式保持一致.

科学领域:

进化生物学是进化的生物学.
发育遗传学的发展遗传学.
人类遗传学是一个学科.

背景情况:

进化速率通常是由种群内的遗传变异预测的.
这种预测能力可能会因遗传约束而在长期进化时间尺度上下降.

研究的目的:

为了研究发展变异性,站立遗传变异性和飞翼形状的深度进化分歧之间的关系.
测试约束假设和探索其他解释,如相关性选择.

主要方法:

对Drosophila melanogaster和Sepsis punctum翅膀形状的内在发育变异性和常态遗传变异性的分析.
基因线的表型化,以评估翅膀形状和健康相关性.
对跨越900个种类和1.85亿年的二生态的检查.

主要成果:

发育变异性和翅膀形状的立基因变异性是对齐的,并预测了深刻的进化分歧.
没有证据表明翅膀形状进化的遗传约束或翅膀形状与健康之间的共变.
与全尺度缩放相关的相关性选择作为观察到的对齐的潜在解释而出现.

结论:

内在的发育变异性可以预测长期的形态特征进化轨迹.
自然选择可能会塑造发育架构,将当前的变异性与过去和未来的进化联系起来.
约束假设没有充分的支持;相关性选择提供了一个合理的机制.

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