CEUB, Campus Universitário Asa Norte, Brasília, DF, Brasil.
Departamento de Ciências Fisiológicas, Instituto de Biologia, Campus Darcy Ribeiro, Universidade de Brasilia, Asa Norte, Brasilia, DF, Brasil.
J Equine Vet Sci. 2023 Jul;126:104251. doi: 10.1016/j.jevs.2023.104251. Epub 2023 Feb 15.
Optimization of DNA collection for National gene bank and conservation programs requires information on spatial and genetic distribution of animals countrywide. The relationship between genetic and geographic distances were examined in 8 Brazilian horse breeds (Baixadeiro, Crioulo, Campeiro, Lavradeiro, Marajoara, Mangalarga Marchador, Pantaneiro and Puruca) using Single Nucleotide Polymorphism markers and collection point locations. Mantel correlations, Genetic Landscape Shape Interpolation, Allelic Aggregation Index Analyses and Spatial autocorrelation tests indicated a nonrandom distribution of horses throughout the country. Minimum collection distances for the national Gene Bank should be 530km, with clear divisions seen in genetic structure of horse populations in both North/South and East/West directions. Comparing Pantaneiro and North/Northeastern breeds, physical distance is not necessarily the defining factor for genetic differentiation. This should be considered when sampling these local breeds. These data can help optimise GenBank collection routines and conservation strategies for these breeds.
优化国家基因库和保护计划的 DNA 收集，需要了解全国范围内动物的空间和遗传分布信息。本研究利用单核苷酸多态性标记和采集点位置，分析了 8 个巴西马品种（Baixadeiro、Crioulo、Campeiro、Lavradeiro、Marajoara、Mangalarga Marchador、Pantaneiro 和 Puruca）的遗传和地理距离之间的关系。Mantel 相关性分析、遗传景观形状插值分析、等位基因聚集指数分析和空间自相关检验表明，马匹在全国范围内的分布是非随机的。国家基因库的最小收集距离应为 530km，在南北和东西方向上，马种群的遗传结构都有明显的划分。比较潘塔内罗和北部/东北部品种，物理距离不一定是遗传分化的决定性因素。在对这些地方品种进行抽样时应考虑到这一点。这些数据有助于优化这些品种的基因库收集程序和保护策略。
