通过商业繁殖环境相互作用对基因型的审查和元分析
Md Mehedi Hasan1, Peter C Thomson1, Herman W Raadsma1
1Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, 425 Werombi Road, Camden, NSW 2570, Australia.
Genes
|September 28, 2024
概括
基因型与环境相互作用 (G×E) 显著影响繁殖. 虽然生长显示了适度的G×E,但生存显示了大量的G×E,需要定制的基因改进计划才能获得有效的结果.
科学领域:
- 水产养殖遗传学 水产养殖遗传学
- 动物育种 动物育种
- 量化遗传学 量化遗传学
背景情况:
- 基因型与环境相互作用 (G×E) 通过影响不同环境中的特征表达,对遗传改进计划构成挑战.
- G×E是通过在不同的环境中测量的特征之间的遗传相关性来量化;与统一度的偏差表明其存在和影响.
研究的目的:
- 评估商业生产中基因型与环境相互作用 (G×E) 的程度和影响.
- 为在养殖计划中开发有效的遗传改进策略提供见解.
主要方法:
- 进行了对32项同行评审研究的全面审查和元分析,重点关注的G×E.
- 在各种环境中分析了生长和生存特征的遗传相关性 (r_g).
- 使用ANOVA来确定归因于G×E的变化比例.
主要成果:
- 太平洋白 (Litopenaeus vannamei) 主导了G×E研究,生长和生存是最常被研究的特征.
- 分析显示,生长的基因相关性中等 (r_g = 0.72 ± 0.05),表明G×E低至中等,但生存的G×E相当 (r_g = 0.58 ± 0.07),表明可能重新排名的繁殖值.
- G×E占增长变化的6.42±1.05%,生存率的7.13±3.46%.
结论:
- G×E对的特征,特别是生存的重大影响,需要制定定制的基因改进计划.
- 在基因组选择计划中实施G×E考虑提供了在不同环境中提高育种效率和成功的机会.
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