Related Experiment Video
Updated: May 26, 2026

Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing
Published on: February 10, 2023
Assessing population-level variation in the mitochondrial genome of Euphausia superba using 454 next-generation
Mattias Johansson1, Elizabeth Duda, Angela Sremba
1Cooperative Institute for Marine Resources Studies, Hatfield Marine Science Center, Oregon State University, Newport, OR, USA. mattias.johansson@oregonstate.edu
Genetic markers for Antarctic krill (Euphausia superba) population studies were identified using next-generation sequencing. The cox2, nad5, and nad6 genes show high variability, making them ideal for future population genetics analyses.
Area of Science:
- Marine Biology
- Genetics
- Zoology
Background:
- Antarctic krill (Euphausia superba) is ecologically and commercially vital in the Southern Ocean.
- Its genetic population structure is poorly understood, hindering conservation and management efforts.
Purpose of the Study:
- To identify genetic markers for Antarctic krill population and phylogenetic analysis.
- To sequence and analyze Antarctic krill mitogenomes.
Main Methods:
- Sequencing of five Antarctic krill (Euphausia superba) mitogenomes using 454 next-generation sequencing.
- Analysis of newly sequenced mitogenomes alongside two existing sequences.
- Comparative analysis of protein-coding genes, tRNAs, and ribosomal subunits.
Main Results:
- Sequenced partial mitochondrial genomes (13,310–13,326 bp) with conserved regions.
- Complete sequences for 11 protein-coding genes, 16 tRNAs, and the large ribosomal subunit were obtained.
- The cox2, nad5, and nad6 genes were identified as promising candidates for population genetics due to high variability.
Conclusions:
- The study provides valuable genetic markers for Antarctic krill research.
- Identified genes (cox2, nad5, nad6) are suitable for future population structure and phylogenetic analyses.
- Further research is needed to analyze the noncoding control region.
Related Concept Videos
Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes
Evolutionary Relationships through Genome Comparisons
Next-generation Sequencing
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.

