研究人员报告了在一群金丝猴（Rhinopithecus）之间的历史性杂交，导致了一个杂交种的起源。地理上孤立的黔金丝猴（Rhinopithecus brelichi）显示出稳定的混合基因组祖先，来源于川金丝猴（Rhinopithecus roxellana）以及滇金丝猴（Rhinopithecus bieti）和怒江金丝猴（Rhinopithecus strykeri）的祖先。研究人员进一步确定了分别来自亲系的关键基因，这些基因可能促成了R. brelichi的马赛克毛色，这可能促进了杂交种与亲系的交配前生殖隔离。这项研究强调了杂交在哺乳动物中产生物种和表型多样性方面未得到充分重视的作用。
据介绍，杂交被广泛认为是促进物种和表型的多样性。然而，它在哺乳动物演化中的作用却很少被研究。
附：英文原文
Title: Hybrid origin of a primate, the gray snub-nosed monkey
Author: Hong Wu, Zefu Wang, Yuxing Zhang, Laurent Frantz, Christian Roos, David M. Irwin, Chenglin Zhang, Xuefeng Liu, Dongdong Wu, Song Huang, Tongtong Gu, Jianquan Liu, Li Yu
Issue&Volume: 2023-06-02
Abstract: Hybridization is widely recognized as promoting both species and phenotypic diversity. However, its role in mammalian evolution is rarely examined. We report historical hybridization among a group of snub-nosed monkeys (Rhinopithecus) that resulted in the origin of a hybrid species. The geographically isolated gray snub-nosed monkey Rhinopithecus brelichi shows a stable mixed genomic ancestry derived from the golden snub-nosed monkey (Rhinopithecus roxellana) and the ancestor of black-white (Rhinopithecus bieti) and black snub-nosed monkeys (Rhinopithecus strykeri). We further identified key genes derived from the parental lineages, respectively, that may have contributed to the mosaic coat coloration of R. brelichi, which likely promoted premating reproductive isolation of the hybrid from parental lineages. Our study highlights the underappreciated role of hybridization in generating species and phenotypic diversity in mammals.
DOI: abl4997
Source: https://www.science.org/doi/10.1126/science.abl4997