在部分季节性迁徙中,早期生命停滞的基础是迁徙可塑性和选择性失踪的队列间变化
Cassandra R Ugland1, Paul Acker1, Sarah J Burthe2
1Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway.
The Journal of animal ecology
|January 29, 2026
概括
早期生活的特征变化,如迁移,由于可塑性和选择,随着时间的推移而变化. 这项研究揭示了欧洲的表面静止下面的复杂动态,影响了人口预测.
科学领域:
- 生态学和进化生物学
- 人口动态 人口动态
- 行为生态学 行为生态学
背景情况:
- 如果生命史特征的早期变化持续存在,它可以显著影响人口结构和动态.
- 现型可塑性和选择性消失的相互作用可以随着时间的推移改变最初的队列变化.
- 对这些对跨年龄和环境的表型动态的影响缺乏全面的量化.
研究的目的:
- 为概念化表型变化的框架提供一个框架,从组合的队列和年龄特定的可塑性和选择.
- 量化季节性迁移与居住在欧洲地区的年龄特定的现象型变化 (或静止).
- 剖析塑性和选择驱动这些表型变化的潜在动态.
主要方法:
- 对表型变化分析的概念框架的开发.
- 使用多状态模型与广泛的多年环重定位数据相适应的实施.
- 分析了来自11个队伍的9358只彩色环状欧洲 (Gulosus aristotelis) 的数据.
主要成果:
- 移民与居民的总比重在出生后的前四个冬季保持不变,这表明移民的特定年龄停滞.
- 这种静止是由于高度的个体重复性,对居住的可塑性以及抵消居民选择性失踪的结果.
- 在最初的迁移水平和随后的可塑性/选择动态中存在大量的队列间变异,这些动态相互作用是动态的,而不是系统的.
结论:
- 关键生命史特征 (迁移) 的明显停滞可以掩盖生命早期可塑性和选择性消失的显著潜在变化.
- 队列中的这些复杂的动态可以重塑跨年龄的变异模式,挑战基于标准分析的预测.
- 未来的环境变化可能会改变塑性和选择的驱动因素,可能导致新的特定年龄的生命史变异.
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