Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile.
J Fish Biol. 2013 Mar;82(3):927-43. doi: 10.1111/jfb.12031. Epub 2013 Feb 8.
This study presents phylogenetic molecular data of the Chilean species of Orestias to propose an allopatric divergence hypothesis and phylogeographic evidence that suggests the relevance of abiotic factors in promoting population divergence in this complex. The results reveal that diversification is still ongoing, e.g. in the Ascotán salt pan, where populations of Orestias ascotanensis restricted to individual freshwater springs exhibit strong genetic differentiation, reflecting putative independent evolutionary units. Diversification of Orestias in the southern Altiplano may be linked to historical vicariant events and contemporary variation in water level; these processes may have affected the populations from the Plio-Pleistocene until the present.
本研究提供了智利 Orestias 物种的系统发育分子数据，提出了一个地理隔离分化假说和地理遗传学证据，表明生物因素在促进该复合体中种群分化方面的重要性。研究结果表明，物种分化仍在继续，例如在 Ascotán 盐滩，那里局限于单个淡水泉的 Orestias ascotanensis 种群表现出强烈的遗传分化，反映出可能的独立进化单位。Orestias 在南部高平原的多样化可能与历史上的地理隔离事件和当代水位变化有关；这些过程可能影响了从上新世到现在的种群。
