曾经和未来的鱼:通过混合种群分析和古代DNA评估大西洋鱼开发的千年
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Lane M Atmore1,2, Inge van der Jagt3, Aurélie Boilard1
1Centre for Ecological and Evolutionary Synthesis, Institute of Biosciences, University of Oslo, Oslo, Norway.
Global change biology
|December 26, 2024
概括
混合库存分析 (MSA) 的诊断DNA面板与古代大西洋鱼具有生物学相关性,揭示了千年来长期的开发模式和20世纪库存下降对遗传多样性的长期影响.
科学领域:
- 海洋生物学 海洋生物学
- 人口遗传学 人口遗传学
- 考古遗传学 考古遗传学
背景情况:
- 小 pelagic 鱼对全球粮食安全和利的渔业至关重要.
- 可持续的管理受到利用多种不同的鱼群的挑战.
- 像单核酸多态 (SNP) 面板这样的分子工具有助于混合库存分析 (MSA).
研究的目的:
- 评估MSA诊断SNP面板的千年生物相关性.
- 调查历史的大西洋鱼 (Clupea harengus) 种群动态和利用情况.
- 评估渔业对鱼遗传多样性的长期影响.
主要方法:
- 来自欧洲考古遗址的大西洋鱼标本的古老DNA分析,年龄高达1300年.
- 诊断SNP面板的应用用于古代和当代鱼的混合种群分析 (MSA).
- 全基因组数据分析以比较历史和现代鱼种群.
主要成果:
- 诊断SNP面板适用于古老的鱼,证明了千年来对MSA的相关性.
- 发现了长期利用大西洋鱼混合种群的证据.
- 在考古遗迹中发现,只有秋季产卵的鱼,这表明过去的生态型偏好或可用性.
- 鱼种群在20世纪的破坏之前表现出相对稳定,观察到较小的遗传多样性减少.
- 确定了与20世纪股票下跌相关的显著长期进化后果.
结论:
- 诊断性SNP面板对古老的鱼具有生物学相关性,提供具有成本效益的遗传监测.
- 古代DNA分析为历史鱼生态和人口动态提供了宝贵的见解.
- 这项研究强调了分子工具和古代DNA在理解长期渔业影响方面的实用性.
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