Complete mitogenomes reveal high diversity and recent population dynamics in Antarctic krill.

ABSTRACT:

Background

The Antarctic krill (Euphausia superba) is a keystone species in the Southern Ocean ecosystem, influencing food web dynamics and ecosystem functionality. Despite its ecological importance, further exploration is essential to understand their population dynamics.

Results

In this study, we present the complete mitogenome of the Antarctic krill. The assembly is 18,926 bp, including a notably large 3,952 bp control region (CR). The CR features a satellite repeat spanning 2,289 bp, showcasing the effectiveness of long-read sequencing in resolving complex genomic regions. Additionally, we identified 900 nuclear-mitochondrial segments (NUMTs) totaling 2.79 Mb, shedding light on the dynamic integration of mitochondrial DNA (mtDNA) into the nuclear genomes. By establishing

SUBMITTER: Sun S 

PROVIDER: S-EPMC12039093 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature