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Evolutionary history of the reef fish Anisotremus interruptus (Perciformes: Haemulidae) throughout the Tropical Eastern Pacific
Journal of Zoological Systematics and Evolutionary Research ( IF 2.0 ) Pub Date : 2020-07-06 , DOI: 10.1111/jzs.12392 Paola Nallely Palmerín‐Serrano 1, 2 , Jose Tavera 3 , Eduardo Espinoza 4 , Arturo Angulo 5, 6 , Juan E. Martínez‐Gómez 7 , Adrián F. González‐Acosta 8 , Omar Domínguez‐Domínguez 2, 9, 10
Journal of Zoological Systematics and Evolutionary Research ( IF 2.0 ) Pub Date : 2020-07-06 , DOI: 10.1111/jzs.12392 Paola Nallely Palmerín‐Serrano 1, 2 , Jose Tavera 3 , Eduardo Espinoza 4 , Arturo Angulo 5, 6 , Juan E. Martínez‐Gómez 7 , Adrián F. González‐Acosta 8 , Omar Domínguez‐Domínguez 2, 9, 10
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The Tropical Eastern Pacific (TEP) is a dynamic coastal environment characterized by a complex system of oceanic processes and discontinuous rocky habitats. These features, in conjunction with the ecological and physiological characteristics of Anisotremus interruptus, might limit gene flow and shape the evolutionary history of the species. In this study, we investigate the evolutionary history of the reef fish A. interruptus (and its Atlantic sister species A. surinamensis) throughout its range in the TEP, using two mitochondrial (cox1 and cytb) and two nuclear markers (S7 and RAG1). We found three genetic groups of A. interruptus with recent divergence times from the Galapagos Archipelago, Revillagigedo Archipelago, the continental TEP, and A. surinamensis the sister specie from the Atlantic. The haplotype mtDNA networks show A. surinamensis in a central position with respect to Pacific genetic haplogroups, whereas nDNA networks show mixed haplotypes between the four genetic groups. In the species tree, A. surinamensis appears as the sister species of all the Pacific samples and the Galapagos Archipelago population emerges as a genetically distinctive group. The samples from the Revillagigedo Archipelago also constitute a genetic distinctive group, closely related to the continental samples. Continental individuals do not show significant genetic structure and exhibit a population expansion during the Pleistocene. The sandy gaps of the TEP not appear to act as barriers isolating populations of A. interruptus, whereas the open sea gap between the oceanic islands and the continental coast do.
中文翻译：
整个热带东太平洋珊瑚礁鱼类Anisotremus interruptus（Perciformes：Haemulidae）的进化史
热带东部太平洋（TEP）是一个动态的沿海环境，其特征是复杂的海洋过程系统和不连续的岩石栖息地。这些特征，再加上间断蚁的生态和生理特征，可能会限制基因流动并影响物种的进化历史。在这项研究中，我们使用两个线粒体（cox1和cytb）和两个核标记（S7和RAG1）调查了TEP中整个范围内礁鱼A.interruptus（及其大西洋姐妹种A.surinamensis）的进化历史。。我们发现了中断点曲霉的三个遗传群最近在加拉帕戈斯群岛，Revillagigedo群岛，大陆TEP和来自大西洋的姊妹物种A. surinamensis之间的分歧时间。单倍型mtDNA网络显示苏里南拟南芥相对于太平洋遗传单倍组处于中心位置，而nDNA网络显示四个基因组之间的混合单倍型。在树种中，A。surinamensis作为所有太平洋样本的姊妹物种出现，加拉帕戈斯群岛人口以遗传上独特的群体出现。Revillagigedo Archipelago的样本也构成了与大陆样本密切相关的遗传独特群。大陆个体在更新世期间没有显示出明显的遗传结构，并显示出种群扩展。TEP的砂质缝隙似乎没有成为隔离中断土壤曲霉种群的障碍，而大洋岛屿和大陆海岸之间的公海缝隙却没有。
更新日期：2020-07-06
中文翻译：
整个热带东太平洋珊瑚礁鱼类Anisotremus interruptus（Perciformes：Haemulidae）的进化史
热带东部太平洋（TEP）是一个动态的沿海环境，其特征是复杂的海洋过程系统和不连续的岩石栖息地。这些特征，再加上间断蚁的生态和生理特征，可能会限制基因流动并影响物种的进化历史。在这项研究中，我们使用两个线粒体（cox1和cytb）和两个核标记（S7和RAG1）调查了TEP中整个范围内礁鱼A.interruptus（及其大西洋姐妹种A.surinamensis）的进化历史。。我们发现了中断点曲霉的三个遗传群最近在加拉帕戈斯群岛，Revillagigedo群岛，大陆TEP和来自大西洋的姊妹物种A. surinamensis之间的分歧时间。单倍型mtDNA网络显示苏里南拟南芥相对于太平洋遗传单倍组处于中心位置，而nDNA网络显示四个基因组之间的混合单倍型。在树种中，A。surinamensis作为所有太平洋样本的姊妹物种出现，加拉帕戈斯群岛人口以遗传上独特的群体出现。Revillagigedo Archipelago的样本也构成了与大陆样本密切相关的遗传独特群。大陆个体在更新世期间没有显示出明显的遗传结构，并显示出种群扩展。TEP的砂质缝隙似乎没有成为隔离中断土壤曲霉种群的障碍，而大洋岛屿和大陆海岸之间的公海缝隙却没有。
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