Aquaculture Genetics & Breeding Lab, Centro de Investigaciones Biológicas del Noroeste, S.C., La Paz, Baja California Sur 23096, Mexico.
The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Midlothian EH25 9RG, UK.
Genomics. 2018 Nov;110(6):423-429. doi: 10.1016/j.ygeno.2018.10.001. Epub 2018 Oct 9.
Selective breeding of shrimp has major potential to enhance production traits, including growth and disease resistance. Genetic characterization of broodstock populations is a key element of breeding programs, as it enables decisions on inbreeding restrictions, family structure, and the potential use of genomic selection. Single Nucleotide Polymorphisms (SNPs) are suitable genetic markers for this purpose. A set of SNPs was developed to characterize commercial breeding stocks in Mexico. Individuals from local and imported lines were selected for sequencing using the nextRAD technique, resulting in the identification of 2619 SNPs. Genetic structure analysis showed three to five genetic groups of Ecuadorian and Mexican origins. A subset of 1231 SNPs has potential for stock identification and management. Further, three SNPs were identified as candidate sex-linked markers. The role of SNPs possibly associated with genes related to traits of importance to shrimp farming, such as growth and immune response, should be further investigated.
虾类的选择性繁殖具有很大的潜力，可以提高生长和抗病等生产特性。亲虾群体的遗传特征是繁殖计划的关键要素，因为它可以决定近亲繁殖限制、家系结构以及基因组选择的潜在用途。单核苷酸多态性（SNP）是这种目的的合适遗传标记。已经开发了一组 SNP 来描述墨西哥的商业繁殖种群。使用 nextRAD 技术选择来自当地和进口品系的个体进行测序，共鉴定出 2619 个 SNP。遗传结构分析显示，有来自厄瓜多尔和墨西哥的三到五个遗传群体。一小部分 1231 个 SNP 具有用于种群识别和管理的潜力。此外，还鉴定出三个 SNP 可能作为候选性连锁标记。应进一步研究与虾类养殖重要性状（如生长和免疫反应）相关的基因可能相关的 SNP 的作用。
