Another polymorphic mitochondrial genome of Grampus griseus and phylogeny of family Delphinidae

Jayan Duminda M Senevirathna; Ryo Yonezawa; Taiki Saka; Yoji Igarashi; Kazutoshi Yoshitake; Shigeharu Kinoshita; Noriko Funasaka; Shuichi Asakawa

doi:10.1080/23802359.2021.1959453

Another polymorphic mitochondrial genome of Grampus griseus and phylogeny of family Delphinidae

Mitochondrial DNA B Resour. 2021 Aug 6;6(9):2569-2571. doi: 10.1080/23802359.2021.1959453. eCollection 2021.

Authors

Jayan Duminda M Senevirathna^{1

2}, Ryo Yonezawa¹, Taiki Saka¹, Yoji Igarashi³, Kazutoshi Yoshitake¹, Shigeharu Kinoshita¹, Noriko Funasaka⁴, Shuichi Asakawa¹

Affiliations

¹ Laboratory of Aquatic Molecular Biology and Biotechnology, Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.
² Department of Animal Science, Faculty of Animal Science and Export Agriculture, Uva Wellassa University, Badulla, Sri Lanka.
³ Department of Life Sciences and Chemistry, Graduate School of Bioresources, Mie University, Tsu, Japan.
⁴ Department of Life Sciences, Graduate School of Bioresources, Mie University, Tsu, Japan.

Abstract

Risso's dolphin (Grampus griseus Cuvier, 1812) is the only species of genus Grampus and a cosmopolitan marine inhabitant. Here, we report a polymorphic complete mitochondrial genome of G. griseus. The size of the total mitochondrial genome was 16,386 bp in length and contains 13 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes, and a control region. 37 single nucleotide polymorphic sites (SNPs) were identified compared to the references. Based on the available total mitochondrial dolphin genomes' phylogenetics, G. griseus has formed a clade with 0.1415 distance, sister to the following species of the subfamily Globicephalinae and the taxonomy of Orcinus orca still needs further investigations.

Keywords: Mitogenome; dolphins; phylogeny; polymorphism.