Despite the undefinition of the origins of Ca de Rater (CR) and Ca de Bestiar (CB) dogs, references to these endangered autochthonous breeds highlighted their ratting/pet and shepherding/guard skills for centuries. Genealogical historical records were traced back to founders. Founder number in the reference population (146 and 53 for CR and CB, respectively), historical and reference maximum generations traced (eight and seven for CR and CB, respectively), and historical average number of complete generations (1.04 for both breeds) were determined. Structure assessment revealed the existence of subpopulations regarding criteria such as breeders (75 and 17), breeder location (32 and eight), owners (368 and 198), and owner location (73 and 51) for CR and CB, respectively. Average inbreeding (F) within breed subpopulations ranged from 0.27–1.20% for CB breeders and the rest of subpopulation criteria for both breeds, respectively, except for CB owners and owner location. F ranged from 0.27–1.41% for CB historical population and CR current population, respectively. The study of genetic diversity revealed a relatively similar genetic background between subpopulations. Average coancestry between and within breeds suggested a similar evolutionary process. However, Mann–Whitney U test determined significant differences for diversity parameters (F, ΔR, coancestry, nonrandom mating degree, maximum, complete, and equivalent generations, ΔF, and genetic conservation index) between breeds and their functionalities. Conclusively, functionality in dog breeds may determine the genetic diversity evolution of endangered breeds, even when these share the same geographic isolation conditions.

中文翻译：

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功能是否会限制岛屿领土隔离下的濒危犬种的种群结构和遗传多样性？

尽管没有对Ca de Rater（CR）和Ca de Bestiar（CB）狗的起源进行定义，但提及这些濒临灭绝的土生土长犬种却强调了它们的追捕/宠物和牧养/警卫技术已有数百年历史。家谱的历史记录可以追溯到创始人。参考种群的建立者数量（CR和CB分别为146和53），追踪的历史和参考最大世代（CR和CB分别为8和7）以及完整世代的历史平均数量（两个品种均为1.04）决心。结构评估显示存在关于标准的子种群，例如CR和CB的育种者（75和17），育种者位置（32和8），所有者（368和198）和所有者位置（73和51）。品种亚群内的平均近交（F）为0.27-1。CB育种者和其余两个亚种群标准分别为CB育种者的20％，CB所有者和所有者所在地除外。CB历史人口和CR当前人口的F分别为0.27-1.41％。遗传多样性的研究揭示了亚群之间相对相似的遗传背景。品种之间和内部的平均血缘关系表明了类似的进化过程。但是，Mann–Whitney U检验确定了品种及其功能之间的多样性参数（F，ΔR，coancestry，非随机交配度，最大，完整和同等世代，ΔF和遗传保守指数）存在显着差异。结论是，即使具有相同的地理隔离条件，狗品种中的功能性也可能决定着濒危品种的遗传多样性演变。