Laboratorio de Genética de Poblaciones Molecular y Biología Evolutiva, Departamento de Biología, Pontificia Universidad Javeriana, Bogotá, DC, Colombia.
Am J Primatol. 2012 Apr;74(4):366-80. doi: 10.1002/ajp.20940. Epub 2011 Mar 31.
We propose the first molecular systematic hypothesis for the origin and evolution of Cebus capucinus based on an analysis of 710 base pairs (bp) of the cytochrome c oxidase subunit II (COII) mitochondrial gene in 121 C. capucinus specimens sampled in the wild. The animals came from the borders of Guatemala and Belize, Costa Rica, and eight different departments of Colombia (Antioquia, Chocó, Sucre, Bolivar, Córdoba, Magdalena, Cauca, and Valle del Cauca). Three different and significant haplotype lineages were found in Colombia living sympatrically in the same departments. They all presented high levels of gene diversity but the third Colombian gene pool was determined likely to be the most ancestral lineage. The second Colombian mitochondrial (mt) haplogroup is likely the source of origin of the unique Central America mt haplogroup that was detected. Our molecular population genetics data do not agree with the existence of two well-defined subspecies in Central America (limitaneus and imitator). This Central America mt haplogroup showed significantly less genetic diversity than the Colombian mt haplogroups. All the C. capucinus analyzed showed evidence of historical population expansions. The temporal splits among these four C. capucinus lineages were related to the completion of the Panamanian land bridge as well as to climatic changes during the Quaternary Period.
我们提出了一个关于卷尾猴起源和进化的分子系统假说，该假说基于对 121 只野生卷尾猴样本的细胞色素 c 氧化酶亚基 II（COII）线粒体基因的 710 个碱基对（bp）进行分析。这些动物来自危地马拉和伯利兹、哥斯达黎加以及哥伦比亚的八个不同地区（安蒂奥基亚、乔科、苏克雷、玻利瓦尔、科尔多瓦、马格达莱纳、考卡和考卡瓦省）。在哥伦比亚，三个不同的、显著的单倍型谱系生活在同一地区的同域。它们都表现出高度的基因多样性，但第三个哥伦比亚基因库很可能是最古老的谱系。第二个哥伦比亚线粒体（mt）单倍群很可能是中美洲独特的 mt 单倍群的起源。我们的分子群体遗传学数据与中美洲存在两个明确的亚种（limitaneus 和 imitator）不一致。这个中美洲 mt 单倍群的遗传多样性明显低于哥伦比亚 mt 单倍群。所有分析的卷尾猴都显示出历史人口扩张的证据。这四个卷尾猴谱系之间的时间分裂与巴拿马地峡的形成以及第四纪气候变化有关。
