研究人员利用代表19个地理区域的225只野生狒狒的高覆盖率全基因组序列，来揭示了种群基因组学和种间基因流。分析结果提供了一个物种间演化网状结构的扩展图景，并揭示了物种内和物种间的种群结构模式，包括同种群间的不同混杂。研究人员描述了狒狒种群的第一个例子，它的遗传组成来自三个不同的血统。结果揭示了产生基于母系、父系和双亲遗传的系统发育关系之间观察到的不匹配的过程，包括古代和近期。研究人员还确定了几个可能有助于物种特定表型的候选基因。
据介绍，狒狒（狒狒属）是一个形态和行为多样化的狭鼻猴支系，经历了表型和遗传上不同系统发育的物种之间的杂交。
附：英文原文
Title: Genome-wide coancestry reveals details of ancient and recent male-driven reticulation in baboons
Author: Erik F. Srensen, R. Alan Harris, Liye Zhang, Muthuswamy Raveendran, Lukas F. K. Kuderna, Jerilyn A. Walker, Jessica M. Storer, Martin Kuhlwilm, Claudia Fontsere, Lakshmi Seshadri, Christina M. Bergey, Andrew S. Burrell, Juraj Bergman, Jane E. Phillips-Conroy, Fekadu Shiferaw, Kenneth L. Chiou, Idrissa S. Chuma, Julius D. Keyyu, Julia Fischer, Marie-Claude Gingras, Sejal Salvi, Harshavardhan Doddapaneni, Mikkel H. Schierup, Mark A. Batzer, Clifford J. Jolly, Sascha Knauf, Dietmar Zinner, Kyle K.-H. Farh, Tomas Marques-Bonet, Kasper Munch, Christian Roos, Jeffrey Rogers
Issue&Volume: 2023-06-02
Abstract: Baboons (genus Papio) are a morphologically and behaviorally diverse clade of catarrhine monkeys that have experienced hybridization between phenotypically and genetically distinct phylogenetic species. We used high-coverage whole-genome sequences from 225 wild baboons representing 19 geographic localities to investigate population genomics and interspecies gene flow. Our analyses provide an expanded picture of evolutionary reticulation among species and reveal patterns of population structure within and among species, including differential admixture among conspecific populations. We describe the first example of a baboon population with a genetic composition that is derived from three distinct lineages. The results reveal processes, both ancient and recent, that produced the observed mismatch between phylogenetic relationships based on matrilineal, patrilineal, and biparental inheritance. We also identified several candidate genes that may contribute to species-specific phenotypes.
DOI: abn8153
Source: https://www.science.org/doi/10.1126/science.abn8153