Cárcamo-Tejer Violeta, Vila Irma, Llanquín-Rosas Francisco, Sáez-Arteaga Alberto, Guerrero-Jiménez Claudia
Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Santiago, Región Metropolitana, Chile.
Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Temuco, Región de la Araucanía, Chile.
PeerJ. 2021 Aug 20;9:e11917. doi: 10.7717/peerj.11917. eCollection 2021.
From the early Miocene, the uplift of the Andes Mountains, intense volcanic activity and the occurrence of successive periods of dryness and humidity would have differentially influenced the modification of Altiplano watersheds, and consequently the evolutionary history of the taxa that live there. We analyzed populations from the Caquena and Lauca Altiplanic sub-basins of northern Chile to determine their genetic differentiation and relationship to their geographical distribution using mitochondrial (D-loop) and nuclear (microsatellite) molecular markers and to reconstruct its biogeographic history on these sub-basins. The results allowed reconstructing and reevaluating the evolutionary history of the genus in the area; genic diversity and differentiation together with different founding genetic groups suggest that have been spread homogeneously in the study area and would have experienced local disturbances that promoted isolation and diversification in restricted zones of their distribution.
从中新世早期开始，安第斯山脉的隆升、强烈的火山活动以及连续的干湿交替时期，都会对高原流域的变迁产生不同程度的影响，进而影响生活在那里的分类群的进化历史。我们分析了智利北部卡克纳和劳卡高原次流域的种群，利用线粒体（D环）和核（微卫星）分子标记确定它们的遗传分化及其与地理分布的关系，并重建这些次流域的生物地理历史。研究结果有助于重建和重新评估该地区该属的进化历史；基因多样性和分化以及不同的奠基基因群体表明，该属在研究区域内均匀分布，并在其分布的受限区域经历了促进隔离和多样化的局部干扰。
