The population genetic structure of a species is frequently shaped by biogeographic barriers that prevent the movement of individuals from one genetic population to another. Although Octopus mimus Gould, 1852 was reported to inhabit the shallow marine waters of the Peruvian province, recent studies suggest its synonymy with O. hubbsorum Berry, 1953 from the Panamanian and the Cortez provinces where it is the main octopus species caught in the artisanal fishery. The aim of the present study was to assess the genetic variability of O. mimus and to determine the presence of population structure across three sampled regions of the eastern Pacific Ocean using the mitochondrial marker cytochrome c oxidase subunit I. The hypothesis that the biogeographic boundary between the Panamanian and Peruvian provinces acts as a genetic break was further tested and recognized by the conformation of two phylogenetic clades and two haplogroups. Results indicate that these lineages are demographically independent populations of O. mimus and do not represent different species as evidenced by the Generalized Mixed Yule Coalescent method. The oceanographic processes have apparently allowed enough genetic flow along the Pacific coast yielding low but significant levels of genetic structure (F_ST = 0.16, p < 0.05) as seen in some fish populations.

中文翻译：

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章鱼的遗传结构，沿三个生物地理海洋省份的1852年

一个物种的种群遗传结构经常受到生物地理障碍的影响，这些障碍阻止了个体从一个遗传种群向另一个遗传种群的迁移。尽管据报道1852年的八爪鱼（Godus mimus Gould）居住在秘鲁省的浅海中，但最近的研究表明它与1953年的O. hubbsorum Berry是同义词，它来自巴拿马和科尔特斯省，在这里是手工渔业中捕获的主要章鱼物种。 。本研究的目的是评估O. mimus的遗传变异性。并使用线粒体标记细胞色素C氧化酶亚基I来确定东太平洋三个采样区域中的种群结构。巴拿马和秘鲁两省之间的生物地理边界充当遗传断裂的假说得到了进一步检验和认可两个进化进化枝和两个单倍群的构象。结果表明，这些谱系是O. mimus在人口统计学上独立的种群，并不代表不同的物种，如通过广义混合Yule合并方法所证明的那样。海洋学过程显然使太平洋沿岸有足够的遗传流，产生了低而重要的遗传结构水平（F _ST  = 0.16，p <0.05），如在某些鱼类种群中所见。