The complete mitochondrial genomes of two octopods of the eastern Pacific Ocean: Octopus mimus and ‘Octopusfitchi (Cephalopoda: Octopodidae) and their phylogenetic position within Octopoda

  • Erika Magallón-Gayón
  • Miguel Ángel del Río-Portilla
  • Irene de los Angeles Barriga-SosaEmail author
Original Article


The complete mitochondrial genomes of two important octopus species from the eastern Pacific were sequenced, obtaining their complete nucleotide sequences. Octopus mimus is the most important commercially catched species along the eastern Pacific, from Mexico to Chile, whereas ‘Octopusfitchi is a pigmy species with uncertain taxonomic genus. The mitogenomes of Octopus mimus and ‘Octopusfitchi were 15,696 and 15,780 base pairs (bp) in length with an A + T composition of 75.5% and 75.8%, respectively. Each genome contains 13 protein-coding genes, 22 tRNA genes, and two rRNA genes, as well as a control region. Gene order is maintained as reported for other species of the Octopodidae. The phylogenetic analysis based on the concatenated thirteen protein-coding genes confirms that O. mimus belongs to the genus Octopus, which is supported by the genetic distance (11–16%) whereas the position of ‘O’. fitchi within this group it is not supported. The analysis also indicated that the phylogenetic position of ‘O’. fitchi is closer to Callistoctopus than to the Cistopus or the Amphioctopus clades. Based on the tree topology and the high genetic distance observed (24–25%), we suggest that ‘O. fitchi might represent a different genus.


Octopus mimus Octopusfitchi Mitogenome Phylogeny 



First author received a postdoctoral fellowship from National Council for Science and Technology (CONACyT). This study was partially supported by Grants UAM-147.09.01, 147.09.04 & 147.09.07 to IDLABS and PRODEP project 14713349 to MADRP.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

This study did not require ethical approval as the tissue samples were collected from local artisanal fisheries.


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Laboratorio de Genética y Biología Molecular, Planta Experimental de Producción AcuícolaUniversidad Autónoma Metropolitana Unidad IztapalapaMexico CityMexico
  2. 2.Departamento de AcuiculturaCentro de Investigación Científica y de Educación Superior de EnsenadaEnsenadaMexico

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