González-Gómez Roberto, Barriga-Sosa Irene de Los Angeles, Pliego-Cárdenas Ricardo, Jiménez-Badillo Lourdes, Markaida Unai, Meiners-Mandujano César, Morillo-Velarde Piedad S
Posgrado en Ecología y Pesquerías, Universidad Veracruzana, Boca del Río, Veracruz, México.
Instituto de Ciencias Marinas y Pesquerías, Universidad Veracruzana, Boca del Río, Veracruz, México.
PeerJ. 2018 Dec 6;6:e6015. doi: 10.7717/peerj.6015. eCollection 2018.
The common octopus of the Veracruz Reef System (VRS, southwestern Gulf of Mexico) has historically been considered as , and yet, to date, no study including both morphological and genetic data has tested that assumption. To assess this matter, 52 octopuses were sampled in different reefs within the VRS to determine the taxonomic identity of this commercially valuable species using an integrative taxonomic approach through both morphological and genetic analyses. Morphological and genetic data confirmed that the common octopus of the VRS is not and determined that it is, in fact, the recently described . Morphological measurements, counts, indices, and other characteristics such as specific colour patterns, closely matched what had been reported for in Brazil. In addition, sequences from cytochrome oxidase I (COI) and 16S ribosomal RNA (r16S) mitochondrial genes confirmed that the common octopus from the VRS is in the same highly supported clade as from Brazil. Genetic distances of both mitochondrial genes as well as of cytochrome oxidase subunit III (COIII) and novel nuclear rhodopsin sequences for the species, also confirmed this finding (0-0.8%). We discuss our findings in the light of the recent reports of octopus species misidentifications involving the members of the ' species complex' and underscore the need for more morphological studies regarding this group to properly address the management of these commercially valuable and similar taxa.
韦拉克鲁斯礁系统（VRS，墨西哥湾西南部）的普通章鱼在历史上一直被认为是……，然而，迄今为止，尚无一项同时包含形态学和遗传学数据的研究对这一假设进行验证。为了评估此事，在VRS内的不同珊瑚礁采集了52只章鱼样本，通过形态学和遗传学分析的综合分类学方法，确定这种具有商业价值的物种的分类身份。形态学和遗传学数据证实，VRS的普通章鱼并非……，并确定它实际上是最近描述的……。形态学测量、计数、指数以及其他特征，如特定的颜色模式，与巴西对……的报道非常匹配。此外，细胞色素氧化酶I（COI）和16S核糖体RNA（r16S）线粒体基因的序列证实，VRS的普通章鱼与来自巴西的……处于同一个得到高度支持的进化枝中。该物种的两个线粒体基因以及细胞色素氧化酶亚基III（COIII）和新的核视紫红质序列的遗传距离也证实了这一发现（0 - 0.8%）。我们根据最近关于章鱼物种误认的报道来讨论我们的发现，这些误认涉及“……物种复合体”的成员，并强调需要对该类群进行更多的形态学研究，以妥善处理这些具有商业价值且相似的分类单元的管理问题。
