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大西洋鱼中的:春季和秋季产卵者之间的基因组和耳骨石形状分歧

Mathilde Horaud¹, Núria Raventós^2,3, Kim Præbel^1,4

¹Faculty of Biosciences, Fisheries and Economics, The Norwegian College of Fishery Science UiT The Arctic University of Norway Tromsø Norway.

Ecology and evolution

|February 17, 2025

概括

不同的产卵时间 (alochrony) 驱动了大西洋鱼的遗传和物理分歧. 这项研究揭示了春季和秋季产卵群体对环境压力因素的并行基因组适应.

科学领域:

进化生物学进化生物学
基因组学就是基因组学.
鱼类学鱼类学鱼类学

背景情况:

基于产卵时间的繁殖隔离形式,可驱动物种分歧.
大西洋鱼 (Cyclopterus lumpus) 呈现两种模式的产卵季节 (春季和秋季).
艾洛克罗尼对大西洋鱼基因组结构的影响仍未得到研究.

研究的目的:

为了研究大西洋鱼分歧的进化驱动因素.
探讨在塑造春季和秋季产卵群体的基因组和形态学特征中异时代的作用.
识别与不同产卵时间和环境适应相关的遗传变异.

主要方法:

64个大西洋鱼标本的全基因组测序.
耳骨形状分析以评估形态差异.
基因组分析侧重于单核酸多态 (SNP) 和染色体区域.
对已识别的SNP进行功能分析,以推断其适应意义.

主要成果:

在春季和秋季产卵组之间观察到明显的基因组和形态差异.
基因组分歧集中在三个染色体上,在染色体1上的特定SNP显示了并行选择.
功能分析表明,SNP与参与环境应激反应和适应季节变化的基因有关.
耳形态支持适应季节性光线可用性的适应.

结论:

阿洛克罗尼在大西洋鱼的遗传和表型分歧中发挥着重要作用.
平行基因组适应表明,快速选择过程是对环境因素的反应.
了解时间遗传结构对于有效保护和管理具有双模分娩模式的物种至关重要.

关键词:

合金合金合金合金亚特兰蒂克大西洋鱼石形状石形状产卵场产卵场是一个产卵场.整个基因组的测序.

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