Complete mitochondrial genomes of representatives of two endemic sculpin families (Perciformes: Cottoidei) from Baikal - the world's largest and deepest lake

Nikolai Mugue; Anna Barmintseva; Anna Etingova; Sergei Didorenko; Maria Selifanova; Lubov Mugue; Alexei Popov; Andrei Bulakhov; Aleksandr Kupchinskiy

doi:10.1080/23802359.2021.1989330

Complete mitochondrial genomes of representatives of two endemic sculpin families (Perciformes: Cottoidei) from Baikal - the world's largest and deepest lake

Mitochondrial DNA B Resour. 2021 Oct 14;6(11):3190-3192. doi: 10.1080/23802359.2021.1989330. eCollection 2021.

Authors

Nikolai Mugue^{1

2}, Anna Barmintseva¹, Anna Etingova³, Sergei Didorenko³, Maria Selifanova^{1

4}, Lubov Mugue¹, Alexei Popov^{1

4}, Andrei Bulakhov^{1

5}, Aleksandr Kupchinskiy³

Affiliations

¹ Russian Institute for Fishery and Oceanography (VNIRO), Moscow, Russia.
² Koltzov Institute of Developmental Biology RAS, Moscow Russia.
³ The Baikal Museum at the ISC SB RAS, Listvyanka, Russia.
⁴ Moscow State University, GSP-1, Leninskie Gory, Moscow, Russia.
⁵ Skolkovo Institute of Science and Technology, Skolkovo, Russia.

Abstract

In this study, five new mitogenomes from four endemic Lake Baikal sculpins were determined: Cottocomephorus grewingkii (Dybowski, 1874) (GB#MW732165), Cottocomephorus inermis (Yakovlev, 1890) (GB#MW732163), and Paracottus knerii (Dybowski, 1874) (GB#MW732164) (Family Cottocomephoridae - Bighead sculpins), and from two specimens of Procottus major Taliev, 1949 (GB##MW732166, MW732167) from Family Abyssocottidae (Deep-water sculpins). Together with recently published mitogenomes of Baikal Oilfishes (Sandel et al. 2017), the first mitogenome-based phylogenetic tree for all three endemic Baikal sculpin families is presented. Complete mitogenome phylogeny supports the monophyletic origin of the lake Baikal sculpins species flock, but does not support the monophyly of the family Cottocomephoridae (Bighead sculpins).

Keywords: Cottocomephorus grewingkii; Cottocomephorus inermis; Lake Baikal; Paracottus knerii; Procottus major.

Grants and funding

The study was supported by joint Russian Foundation for Basic Research (RFBR) and the Government of the Irkutsk Region grant [RFBR # 20-44-380021]. Analysis of RNA-Seq was partially funded by Russian Science Foundation grant [#19-74-20189].