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塑性和环境变化下的交换式反应规范的适应性演变
Claudia Crowther1, Stephen P Bonser2, Lisa E Schwanz2
1Department of Integrative Biology, W.K. Kellogg Biological Station, Michigan State University, Hickory Corners, MI, United States.
Evolution letters
|February 19, 2024
概括
现型可塑性可以帮助适应气候变化,但它的形式很重要. 性表型进化的非线性可塑性促进了适应性,而线性转变阻碍了它,影响了性别比例和人口持久性.
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:
- 现型可塑性对于适应环境变化至关重要.
- 非线性表型-环境关系是常见的,特别是在热敏特征中.
- 环境性决定 (ESD) 涉及性发展的门,受环境因素的影响.
研究的目的:
- 调查环境性别确定 (ESD) 反应规范中的不同形式的可塑性如何影响气候变暖下的性别确定值的演变.
- 了解ESD特征的适应性进化潜力,以应对不断变化的环境条件.
主要方法:
- 利用基于个体的理论模型来模拟性别决定拐点的演变.
- 研究了非线性反应规范斜率和曲点的线性转移对适应性进化的影响.
- 根据各种气候变暖情景和气候变异性评估了进化结果.
主要成果:
- 更的非线性反应规范斜率 (高可塑性) 促进了转折点的适应性进化,朝着新的最佳表型发展.
- 增加的线性可塑性 (拐点的变化) 阻碍了性别确定值的适应性进化.
- 与极端变暖相比,中度变暖场景促进了更大的适应性进化.
- 较高的气候变异性意外地增加了人口持久性,这是由于稀有性个体的生产增加.
结论:
- 不同形式的表型可塑性对适应性进化有不同的影响.
- 保持稳定的性别比率的可塑性可以阻碍适应,而导致临时性别比率偏差的可塑性可以促进它.
- 该研究强调了塑性,环境变化和ESD物种的进化轨迹之间的复杂相互作用.
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